My custom Holset Turbo Build (a step away from the norm)

[turboglenn]

Well, having finally come across an almightly holset for myself, although a tad dissapointed with the wheel it came with to push air, I have found many upgrades right up to the 60mm inducer HX40 wheel custom made with housing just to fit the H1c turbo (normally you couldn't just bolt even this wheel on)

So far i've machined a garrettt T3 .63 a/r turbine housing to accept the CHRA, cleaned it up a tad and am now working to get the paint off the compressor cover (as well as designing what i hope to be the ultimate end all of holset oiling suplies - but more on that when it's done and proven)

I traded my PTE6776RS ( in journal bearing form, figure i'll experiment withthe B CHRA with smaller wheels ) for this H1c, a turbonetics 50 trim, some 1600cc injectors and then threw in a few other parts for a HUGE greddy FMIC core meant for a skyline and or supra (sold for both cars)

To behonest i am enjoying building the H1c because ihate those snap rings the others use similar to MHI covers, and the thught of being able to pull and put a fresh shine on the compressor cover with one t-bolt and one v-band makes me smile

I've got a deal worked out where i'm getting the 4" inlet with MWE grooves (i can get them both functional and non too ) and hope to put this on the car very soon so my buddy can have the PTE6776

(some will dog me for giving up the big turbo, but i didn't need 750+ WHP or the lag that came with it, i want early spool, solid torque and a peak of 500-550hp

Figured i'd post this up here since it's not ready for the "results thread" yet and i'm proud of my worl.. I clearanced the turbine tips to housing at .019" per blade (same spec as called for in the case tractor service manual this turbo came on, but at the mAX end of the range figuring gas willl behotter with more thermal expansion)

I'm so stoked to show off and maybe hook some others up with my oiling system once it's built (and if i can pay up some freelancer status )

anyway here's pics, enjoy, feedback and quetions welcome (the red spray paint was used during maching as a way to check clearances, I know a built up layer can be about 5-7 thousandths and tells me where i'm way too close at easily and cheaply)

 

[BoostedBeaver]

Glenn,

I really like that you are venturing out and doing something different. I am far from someone who can judge what the performance might be, but I am interested to see the outcome. You are always incorporating something into your build.

Let me see if I got this right this is a H1C going into a machined Garrett T3 housing with an upgraded compressor wheel?? Are you going to be using the H1C turbine wheel??? What compressor wheel do you plan on using??? I know that I ask a lot of questions but I am interested.

By the way I subscribed so please keep us updated.

Robert

 

[JusMX141]

Nice job on the machined housing....but that fire hydrant you have for an oil inlet fitting has me a little concerned.

 

[turboglenn]

Robert, thanks! I plan to use holset upgrades that are direct bolt ons to the H1c even wth V-bnd install, there's wheels from 52 - 60mm (basically everything from smaller than hx35 to as large as the hx40 pro wheel available, and the housings can be had with or without working MWE grooves)

The H1c has the same exact turbine as the hx 35 as far as dimensions go, but i THINK the shaft is different, so this is going to be my unique build (hence the thread title)

I plan to go 58 or 56mm, I don't want too much lag but I am lookin to be able to break the 500hp mark on boost alone at roughly 30psi +/-3psi

Justin, the /6 inlet is just something i had that contained the correct flare to seal to the holset's inlet, I will probably swap it to -4 (but, if my theory is correct on flowing the required 2-3 liters per minute while holsing pressure in the correct range should be doable with a -6 as the holset manual calls for a 3/8ths inlet ID which is about the same as -6 (or exact the same really) but i'm worried too much flow there couls starve the bottom end.

Thanks for the props on the machining, it's not often I get to use what i learned at majestic turbo all themyears ago, and having done it on the mill instead of the preffered lathe was a challenge in it's self

Justing what do you think a 54mm holset wheel flows on the compressor side? I amabout to get one for temporary use as this 8 blade 50mm is just too small for me, I'm looking for over 50 lb/mn...also what wheel you think is best for a max flow of say ~57-58lb/mn? I'm looking for a solid 530whp

 

[bastarddsm]

Run what ever wheel you got on it with that housing and see where it gets you.

 

[JusMX141]

Justin, the /6 inlet is just something i had that contained the correct flare to seal to the holset's inlet, I will probably swap it to -4 (but, if my theory is correct on flowing the required 2-3 liters per minute while holsing pressure in the correct range should be doable with a -6 as the holset manual calls for a 3/8ths inlet ID which is about the same as -6 (or exact the same really) but i'm worried too much flow there couls starve the bottom end.

You'll flood the cartridge and have oil running into your exhaust before you starve your engine. The -6AN feed these turbos use on Cummins engines comes from a source well within the appropriate pressure range.

Stick with what we know works- right now that's a -4AN feed from the filter housing with a restrictor in place only to keep peak pressures at 70psi...and only restrict as much as necessary to do so.

Justing what do you think a 54mm holset wheel flows on the compressor side? I amabout to get one for temporary use as this 8 blade 50mm is just too small for me, I'm looking for over 50 lb/mn...also what wheel you think is best for a max flow of say ~57-58lb/mn? I'm looking for a solid 530whp

No clue- I don't know anyone using them.

I've seen a few 7-blade 54mm HX35 users who were really abusing their turbo push the map to around 62 lb/min. I'd honestly expect more than 50 lb/min out of your current wheel given it's large 83mm exducer, but nobody has hard evidence.

 

[turboglenn]

You'll flood the cartridge and have oil running into your exhaust before you starve your engine. The -6AN feed these turbos use on Cummins engines comes from a source well within the appropriate pressure range.

Stick with what we know works- right now that's a -4AN feed from the filter housing with a restrictor in place only to keep peak pressures at 70psi...and only restrict as much as necessary to do so.


No clue- I don't know anyone using them.

I've seen a few 7-blade 54mm HX35 users who were really abusing their turbo push the map to around 62 lb/min. I'd honestly expect more than 50 lb/min out of your current wheel given it's large 83mm exducer, but nobody has hard evidence.

Cool, couple of questions for ya bud. With the 4an, I've got a cool setup to regulat e pressure in the works, but when that silver fitting in the holset feed hole is removed what is that thread and flare (reverse flare) that the hoslet uses? I just stuck a _6 meant for power steering in there and it fit perfect but ihave nothing to gauge the thread or compare the reverse flarre to.

as far as 62lb/min on a 7 blade 54mm that's what i'm getting (or can get now) how bad do you have to abuse them to get them there (a.k.a. what psi?)


This new FMIC core should really helpkeep IAT's down so that will help if i have to push it but i'm really looking for the smallest wheel that can safely support 500-550 (525 would be perfect) WHP wihtout spinnign the guts out of it.

 

[BoostedBeaver]

Cool, couple of questions for ya bud. With the 4an, I've got a cool setup to regulat e pressure in the works, but when that silver fitting in the holset feed hole is removed what is that thread and flare (reverse flare) that the hoslet uses? I just stuck a _6 meant for power steering in there and it fit perfect but ihave nothing to gauge the thread or compare the reverse flarre to.

Glenn,

If you are referencing the feed hole thread pitch it is 12mmx1.5. Here is the thread that helped me.

http://www.dsmtuners.com/forums/turbo-system-tech/386366-hx35-oil-feed-thread-size.html

As far as the shaft being a different size, do you mean that it is a different diameter or a different length??? Are the wheels you speak of made to fit a different diameter shaft (If the diameter is what is different)??? Could you take a wheel off of a HX35 and bolt it on or would it not fit due to the difference in diameter/length? Just trying to understand in what way the shaft is different.

Robert

 

[Pauls99Gst]

Glenn you could go with the 8 blade 56mm wheel the spool should be very very close to a 54mm. Or I could be wrong and the 54mm could spool a hair quicker and make more power over the 8 blade. I'd personally just got with the 7 blade 56mm. the spool on a standard hx35 is awesome quick and you will love it expecially since going down from such a big turbo its like dropin down to a 16g. Im just saying since its proven and spools amazing I know youd be happy with it also since you want around 530 whp at around 30psi the 7 blade 56mm would put you right there with the .63 a/r turbine. just my .02

 

[JusMX141]

Cool, couple of questions for ya bud. With the 4an, I've got a cool setup to regulat e pressure in the works, but when that silver fitting in the holset feed hole is removed what is that thread and flare (reverse flare) that the hoslet uses? I just stuck a _6 meant for power steering in there and it fit perfect but ihave nothing to gauge the thread or compare the reverse flarre to.

12mm x 1.5

as far as 62lb/min on a 7 blade 54mm that's what i'm getting (or can get now) how bad do you have to abuse them to get them there (a.k.a. what psi?)

If you run one of these you'll have a gap in the backplate groove....the exducer is only 78mm versus the 83mm your current backplate is cut for.

You can beat it up as bad as you want, or until your thrust plate dies (H1 thrust plates aren't as durable as HX thrust plates). I've never seen a broken HX35 turbine.

I'd personally just got with the 7 blade 56mm.

This wheel doesn't exist.

 

[forcefed86]

Looks good... Was hoping to live my poor mans HE351VE dreams through you though...

Here is a pretty common hc1 upgrade... Not exactly cheap though! I think you should try the comp setup you have now as well, may suprise you.

Good luck!

UPGRADE COMPRESSOR HOUSING AND 60mm HIGH FLOW WHEEL 91-94 DODGE/CUMMINS

 

[turboglenn]

robertbax... I'm not completely sure the difference, justin told me about them not mixing and that's what i'm basing that off of

Pual, thanks for the info, I think i may go 56mm, but they are out of stock so 58mm would be my next choice, the rep where i am ordering said to go straight to the 60mm but i don't think i want that kinda lag

Justin... the wheels i'm talking about are made for the H1c as bolt ons and all have the 83mm exducer (called them to check) the compressor covers are also custom cut for them, And the MWe grooves in these housings are all actually factory cast into them and not a hack job cutting open of them

Upgrade Compressor Housing & Wheel combo (58mm inducer) for 1991.5-1994 Turbochargers




Also, the thread of that fitting in the turbo accepts 12 x 1.5 once you remove that fitting BUT, that fitting is cast into my housing there for i can't use the 12 x 1.5, any idea of the thread that's in that fitting? it wasn't in that other thread??

forcefed.. yopu can get them for only 275 andnot need thebacking plate if you have the 83mm exducer like i do, I can get all the way from 52mm to 60mm with or wihtout functioning mwe grooves, PMme if you need more info about those

 

[turboglenn]

Well, I finished her up, been sick, in the hospital a few days myself for my stomach issue and dealing with grandma in the hostpital with cancer of the liver, but have managed to get the parts and put them together, i just need to finish my oiling system (i din't have the normal 12 x 1.5mm thread i have that flare built into my CHRA and have to adapt to that)

But i got an 8 blade hx40 wheel and MWE grooved housing with the grooves actually cut through and working.

Might be the biggest H1c put on a DSM yet, although it's closer to something else entirely now

I"ll ge pics up here in a minute..there's a few with the new compressor cover on the old wheel, just to illustrate the increase in wheel size, then there's a few in finished form ready to mount. just got to order some more AN fittings for the final oiling system i want to run or machine them from scratch, we'll see how lazy i get

it's an H1c with 58mm wheel and housing with cut MWE grooves, oil cooled CHRA only, then a garrett t3 - 5 bolt style .68 a/r exhaust housing i machined to except the h1c/hx35 turbine wheel

The only thing that's gonna break my heart is to cut the v-band outlet off and weld on a cast 90* elbow. I might play with new FMIC pipe routing during theinstall but with my rule of keeping the OEM main cooling fan i know that i'll be running it the way my current setup is done still with the outlet firing upwards and going over and through the radiator support to the FMIC core

 

[BoostedBeaver]

Nice work Glenn and what a great way to take up all that space in the compressor cover.

Couldn't you keep the vband and weld a vband to a piece of pipe. Then you could keep the vband outlet and connect the FMIC pipping with a coupler. Maybe I am missing something or maybe there is not enough space for this idea, but just trying to think of something without breaking your heart.

Also that thing looks like it is going to breath well at least a lot better than the DSM footprint.

Robert

 

[turboglenn]

Nice work Glenn and what a great way to take up all that space in the compressor cover.

Couldn't you keep the vband and weld a vband to a piece of pipe. Then you could keep the vband outlet and connect the FMIC pipping with a coupler. Maybe I am missing something or maybe there is not enough space for this idea, but just trying to think of something without breaking your heart.

Also that thing looks like it is going to breath well at least a lot better than the DSM footprint.

Robert

Thanks! I'm rather proud of the build myself My real dillema is do i paint or polish the compressor cover??? polishing takes FOREVER and looks good for about a week, and paint i just can't pick a color but might loook nice for a while. (i've polished every turbo on this car in it's life , so i might stick with tradition if i'm up to it) I love the huge'ness of the holset compressor covers as for the V-band, i'll post a pic of how my IC pipes are ran, this is the only way i can fit them and retain the OEM fan on the passenger side and keep the car cool with the air on in the nebraska summers. (after years of overheating with every slim fan i could possibly try I went back to the OEM unit and have been back to being able to use my AC no matter how hot it gets, so that's a HUGE factor to me)

I definintely feel that the garrett hot side flows better than the DSM one's do and since i'm already on the manifold i didn't want to go backwards, plus i see so many mitsu housings cracked from heat backing up on our cars that even with a different brand like BEP or whatever i'm leary of going with that housing/footprint

I could have went with a 60mm wheel but i was trying to balance the best available 550whp for my goal with the earliest possible spool (which the MWE grooves won't help spool but the nitrous has never left the car either )

This wheel is hopefully a nice balance or it's own version of the hx35/40 hybrid, the 8 blade 58mm wheel is supposed to support the same as a 60-1 but be better efficiency according to what's out there for info, and i've heard slightly higher numbers from the diesel place that sold me on the wheel (this one should flow between 60 and 62 lb/mn and the larger one they said was something like 69-71 lb/mn both being 8 blade wheels) I wanted just big enough to garauntee over 525 whp at under 35psi (this was my own criteria anyway, and hopefully i'm on track with it)

I LOVE the v-band compresor cover though, bolt styles are OK, but when i see those snap rings on the back i run in fear so this build, although not superior to similar combos that are available is at least easy to work on, but that brings me back to the v-band outlet, I want to use it but the pics will explain my space constraints, i have to come out with a sharp bend, but plan to use the v-band from the end of the new elbow onto the currrent piping just for kicks if i have the room to fit it in

I can't wait to hear that trademark holset whistle with the MWE grooves (the ricer in me coming out i guess )

here's' some pics of the IC pipe routing from the turbo in mysetup, which is why i would be cutting it off anyway, but i'll just have to mak the weld twice as pretty i guess

This is the t67 (t04S housing) in the pics, and the holset and S housings are about the same size so no denting of water pipe or anything to the best of my knowledge measuring and eyeballing so far )

 

[bastarddsm]

I had wanted to try a hx40 turbined 54mm 7blade HX35 in a BEP bolt on housing. And then I also wanted a to put my WH1c in a .63 or .84 5 bolt housing like you did.

But then I got a HY35 for $125, and my WH1C is sitting dormant.

Let us know what the spool is like.

 

[forcefed86]

Looking good! Maybe it's the fiberglass CAI on my Hx-40 but the "holset whistle" isn't any louder than ay other turbo I've owned. I was a little disappointed. Curious to see how fast it spools with the .68. My .63 was a bit of a dog.

 

[turboglenn]

I had wanted to try a hx40 turbined 54mm 7blade HX35 in a BEP bolt on housing. And then I also wanted a to put my WH1c in a .63 or .84 5 bolt housing like you did.

But then I got a HY35 for $125, and my WH1C is sitting dormant.

Let us know what the spool is like.

Oh, i'll surely be reporting the feedback And I'm not trying to step on toes of anyone doing it but i'd gladly machine one out for ya just for experimentations sake and do it for a damn fair but cheap price since it would bethe first that we know of to be done in that size volute and housing

i got this turbo (sans upgrades and hot housing) and a garrett/t-netics 50 trim stage III turbine turboalong with some 1600's for my t67 in journal bearing form (fair trade i would say but the 50 trim needed rebuilt, so i tossed a bolt in 360* thrust setup in it and put it together and it's ready to go now too) that also leaves me with the PTE rebuildable BB CHRA that now houses a t3 stage III turbine and a 57 trim compressor but surged HARD because it comes on so fast (thinking maybe the 50 trim would work better in that combo)

Looking good! Maybe it's the fiberglass CAI on my Hx-40 but the "holset whistle" isn't any louder than ay other turbo I've owned. I was a little disappointed. Curious to see how fast it spools with the .68. My .63 was a bit of a dog.

oops, i meant .63 i think (just looked, yep!) hopefully mine isn't too bad, did you go with something else afterwards or to spool faster? ( i remember seeing your logsin a thread and it was a litle laggy) My only other option would be to bore out a .48 a/r but no one is making a bolt on in the ford 5 bolt style and tht's the only type that my manifold will accept and not hit the block with the turbine housing. Also do you know what clearance from housing to blade tip clearnace was used on the turbine? I've set mine at just under .020" (averaging about .019 - .0185") little tight compared to some but in the high side of clearance for diesel exhaust which was spec'ed at .019" MAX, but i figured for heat exapansion of the turbine i'd set it on the "loose" side and what most of my other gas turbos seem to be near.

I noticed when boring the housing though that the opening in the middle volute got really WIDE and i think that may be a factor on slow spool since it wouldn't increase velocity of the gasses like a smaller one would.. if this doesn't work out maybe i'll get a BEP mitsu flange and just keep the garrett stufdff on the wall for cash or back up

Did you have the silencer ring out of your holset? I hear that's what makes em whistle so loud (i've heard some that are mind blowing like on talondave's car where you cna hear it inside on camera during a low 10 second pass)

and i've seen other vids where you can't hear it outside the car, I guess i can only hope

What specs was your turbo that was put into the garrett housing? was it hx40 turbine and compressor? if so what mm compressor?

This being an H1c is the same turbine as an HX35, and with the 58mm wheel and being 8 bladed to start moving air earlier i figre spool should be ok.. if it's slower than the BB t67 was i'm gonna throw it off a bridge

 

[forcefed86]

Oops, i meant .63 i think (just looked, yep!) hopefully mine isn't too bad, did you go with something else afterwards or to spool faster? ( i remember seeing your logsin a thread and it was a litle laggy) My only other option would be to bore out a .48 a/r but no one is making a bolt on in the ford 5 bolt style and tht's the only type that my manifold will accept and not hit the block with the turbine housing. Also do you know what clearance from housing to blade tip clearnace was used on the turbine? I've set mine at just under .020" (averaging about .019 - .0185") little tight compared to some but in the high side of clearance for diesel exhaust which was spec'ed at .019" MAX, but i figured for heat exapansion of the turbine i'd set it on the "loose" side and what most of my other gas turbos seem to be near.

I noticed when boring the housing though that the opening in the middle volute got really WIDE and i think that may be a factor on slow spool since it wouldn't increase velocity of the gasses like a smaller one would.. if this doesn't work out maybe i'll get a BEP mitsu flange and just keep the garrett stufdff on the wall for cash or back up

Did you have the silencer ring out of your holset? I hear that's what makes em whistle so loud (i've heard some that are mind blowing like on talondave's car where you cna hear it inside on camera during a low 10 second pass)

and i've seen other vids where you can't hear it outside the car, I guess i can only hope

What specs was your turbo that was put into the garrett housing? was it hx40 turbine and compressor? if so what mm compressor?

This being an H1c is the same turbine as an HX35, and with the 58mm wheel and being 8 bladed to start moving air earlier i figre spool should be ok.. if it's slower than the BB t67 was i'm gonna throw it off a bridge

Yup silencer is gone. 4" to a huge filter. Link to poor mans CAI. Can't believe how light and strong it was when finished.

http://www.dsmtuners.com/forums/art...eap-4-cai-hard-pipes-works-great-holsets.html

Listen to this S300 compound setup with an he341 my buddy just finished. It's ridiculous! cummins twin turbo 12 valve, 215 P-pump - YouTube (53psi)

I believe my setup is an HX40W that someone put a 60mm 6 blade billet upgrade on. Bought it for $325 off a local diesel guy. He claimed it was a hx40pro.

I'm really not sure what the specs are as the housing was cast for the hx-40 not cut. Bought it from "Tims turbos". Appears to be pretty snug, but cameras can play tricks on the eyes... It really comes alive at 25+, unfortunately my fuel system can't keep up with anything more.

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[turboglenn]

Two more questions for ya there.. what manifold are you using with that housing from Tim's??

Second, oil feed.. I've made my own AN lines for years but am thinking about just buying some ones kit because i'm getting busy this month and i don't want to hunt down this and that fitting (I already have to deal withnot having the benefit of the 12 x 1.5mm thread and MUst use the inverted flare because that's cast into my CHRA ) so i was wondering if you made your own or bought some ones kit? if so what restrictor and what are your basic engine specs (i.e. balance shafts or not, ported OFH relief??)

I wanna get her on this week and want no snags but we're getting a foot of snow tonight so who knows

 

[forcefed86]

Two more questions for ya there.. what manifold are you using with that housing from Tim's??

Second, oil feed.. I've made my own AN lines for years but am thinking about just buying some ones kit because i'm getting busy this month and i don't want to hunt down this and that fitting (I already have to deal withnot having the benefit of the 12 x 1.5mm thread and MUst use the inverted flare because that's cast into my CHRA ) so i was wondering if you made your own or bought some ones kit? if so what restrictor and what are your basic engine specs (i.e. balance shafts or not, ported OFH relief??)

I wanna get her on this week and want no snags but we're getting a foot of snow tonight so who knows

Supply was a -4 ss line. Mine used the 12x1.5mm. Used the method in the link below. 1/16 hole restriction. My oil pressure was on the high side from the OFH even after porting it. (B-shafts removed) I still see 65-70 3000RPM: 75-80psi by redline. 20-50 vr-1 oil.

HOW TO: Make an oil restrictor for less then $10 - SR20 Community Forum - The Dash


I used a t6 drain with 3/4" brass adapter. Then used a 3/4 copper hard lines and a small section of silicone for the drain.

Use the OBX manifold for the 4g64. Even with the 18cm housing I still had plenty of room with it. Ended up with a cheapo cxracing radiator and dual 12" fans. So far the new rad and fans have kept the car cooler than the old OEM radiator and factory fans. I'm like you though... I hated ditching the OEM shrouds/fans.

http://www.dsmtuners.com/forums/tur...g64-manifold-looks-similar-erl-placement.html

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[turboglenn]

forcefed... you did have some slow spoolin going on which is my one scare with machining this housing out for the turbine, from what i can tell the ones you buy, like the one from TIM's you showed pics of was a precision housing just machined to accept the holset CHRA which isnt too difficult, mainly because you could see where the cast "precision" emblem was ground off (at least that'smy take after having had the housings from preciion and seeing the finish and grinding area)

so i imagine this will perform damn near idetical to how yours did, but i wonder how much your spool was hurt by using an hx40 turbine wheel and compressor wheel (if the comrpessor was bigger than what i'm running in comparison)

but anyway, what were your wheel specs on oth sides, (blade count on both and sizes)???

 

[forcefed86]

forcefed... you did have some slow spoolin going on which is my one scare with machining this housing out for the turbine, from what i can tell the ones you buy, like the one from TIM's you showed pics of was a precision housing just machined to accept the holset CHRA which isnt too difficult, mainly because you could see where the cast "precision" emblem was ground off (at least that'smy take after having had the housings from preciion and seeing the finish and grinding area)

so i imagine this will perform damn near identical to how yours did, but i wonder how much your spool was hurt by using an hx40 turbine wheel and compressor wheel (if the compressor was bigger than what i'm running in comparison)

but anyway, what were your wheel specs on oth sides, (blade count on both and sizes)???

I believe it's a 76/63 12 vane turbine wheel, 86/60mm 6 vane compressor. Read on the diesel forums the 10 blades spool faster but flow less...

Don't think it's a precision copy. Casting is very different, Justin compared it to a precision in this thread. (post #16)

http://www.dsmtuners.com/forums/turbo-system-tech/417741-garret-63ar-hx40-housing-pics.html

 

[turboglenn]

Here's a pic showing the stock compressor and wheel (50mm) next to the new 58mm unit, both are 8 blade with exducer diameters of 83mm (larger than the hx-35 if i'm correct)

I believe it's a 76/63 12 vane turbine wheel, 86/60mm 6 vane compressor. Read on the diesel forums the 10 blades spool faster but flow less...

Don't think it's a precision copy. Casting is very different, Justin compared it to a precision in this thread. (post #16)

http://www.dsmtuners.com/forums/turbo-system-tech/417741-garret-63ar-hx40-housing-pics.html

OK, I am running the hx-35 turbine which is 60mm at the exducer (not sure the major diameter) and it's a 12 blade as well (i thought 12 wouls spool better and 10 would have clearance for more flow?) and my compressor wheel is 83/58mm so I'm smaller on both and with an 8 blade compressor also making it move more air at lower pressures so that could perpetuate earlier spool

I'd really like to see 25 - 30psi by no latr than 4300-4700 RPM (if i have to and i can find one cheap i might machined out a .48a/r housing, but don't want to cut up my only .48 to test if this isn't pretty damn good already)

I did a little more looking and found that the people running themachined garrett housings to fit the holsets (not buying the bolt on tims/bep) were making their boost quite early on hx35 turbos and since i'm running the hybrid i'm guessing my spool time will be a little laggier then there's which was pretty damn early but in a .48 a/r housing

So since i'm pulling the BOV pipe because i traded off the BOV it's self, I figure i'm part of the way there might as well toss in theholset right??

i've decided to change from banjo to a 90* plumbing fitting at the turbo and still keep the banjo at the OFH (for those who've seen my feed thread) I figure the NPT will less likely leak compared to the banjo being that it's a homemade banjo sort of, and i will still have the option to swap to smaller lined and restrictors if needed while still measuring pressure atthe turbo directly

all these things provided i figure why not???

the only things in my entire setup that will change besides the turbo it's self is where the turbo is fed from for oil (will be eliminating water feeds)

I'm so stoked, i hope everything is what i'm hoping for, and now that i've got the fuel to do the job (1600's now instead of the 1000's i had a few weeks back) I plan to push it right up to the limits of my head stud/gasket combo (30-33psi and stay conservative on timing)

But i'm even going to bed early to get a jump on it If all goes well by this time tomorrow i should be on the holset bandwagon officially (didn't know what else to call it )

and as soon as the roads are dried up from the snow we got today i should be posting logs up for everyone (in excel format so anyone can read them)

wish me luck !

 

[forcefed86]

I've been looking at my logs and some things aren't adding up. Before switching to e85 and jakal I ran a keydiver chip and 2g maf with meth inj and e30.(e316g) I have video of me at 34psi by 4000rpm. After the new engine install switching to e85 and jakal my 16g spool times dropped considerably. Around 22psi by 4000. I think I have some under lying issues and make for a poor comparison.

I'm excited too! Your the only other one I know running a .63 housing. Looking at Mr Peepers results I'm hoping for a pleasant surprise.