limits of walbro 255 w/ 1000cc injectors at 25-30psi with 60-1

[deezay]

i plan on in the very near future upgrading to a sbr 60-1. i'd like to run upwards of 25psi on 94 gas... and ###### 30psi on race gas. i was wondering if the 255 will have enough headroom to keep up with the boost and the injectors or if i should use the a1000 from aeromotive. i also planning on upgrading all the fuel lines. i've heard hte 255 is good to just about 500ish but in some cases other people are running a it over 500 and still using the walbro. i'd rather have too much, just to cover my ass incase something happens then making it be on the edge of 'iffy'. i'd rather have overkill, but please post your comments or if you have upgraded to something different than the 255, or you have hit the limits of it, please let me know. i remember reading a post on here a couple months back about some people using dual 255's. thanks!

-andrew

 

[95blackGsTurbo]

Another " I wanna run 10's before I've run 12's" thread I see. Even with a 60-1 you won't need anymore than a 255. Maybe a Supra pump depending on your budget. You are going to need some HEAVY tuning time though if you plan on running a 60-1 on 25psi daily. And especially 30psi. You might want to think about a small upgrade before you try to run huge psi numbers. You will have to build your motor to handle those numbers. Will need to get new cam's and most likely springs and valves while you are at it. 60-1 isn't something you bolt on put a big pump on with some injectors and start flooring it around town. Without a good tune you could be looking at detonating that motor in a matter of minutes literally. I've seen it@!

 

[Coup D E'Tat]

First, I do not suggest a SBR 60-1. Not to bash Slowboy, but you really should buy a full T3 turbo. The T3 housing will flow more.

Second, what do you plan on tuning with?

 

[Slowboy]

First, I do not suggest a SBR 60-1. Not to bash Slowboy, but you really should buy a full T3 turbo. The T3 housing will flow more.

Second, what do you plan on tuning with?

We have made 513 WHP with our 60-1 "bolt on" internal gate on Nate's car about two years ago..... assume the turbine housing flows adequately.

Our bolt on 35R set up with external gate has made over 600 WHP, again please make the same assumption.

If you are stuck on the T3 turbine housing only, we can do them too

MGH

 

[Slowboy]

i plan on in the very near future upgrading to a sbr 60-1. i'd like to run upwards of 25psi on 94 gas... and ###### 30psi on race gas. i was wondering if the 255 will have enough headroom to keep up with the boost and the injectors or if i should use the a1000 from aeromotive. i also planning on upgrading all the fuel lines. i've heard hte 255 is good to just about 500ish but in some cases other people are running a it over 500 and still using the walbro. i'd rather have too much, just to cover my ass incase something happens then making it be on the edge of 'iffy'. i'd rather have overkill, but please post your comments or if you have upgraded to something different than the 255, or you have hit the limits of it, please let me know. i remember reading a post on here a couple months back about some people using dual 255's. thanks!

-andrew

Assume the Walbro will not be enough for more than 550 WHP... at this point, we suggest adding an inline pump or going with the Aeromotive 11101 and sumping the tank..... of course this is just what we have experienced here and is my opinion

MGH

 

[deezay]

i'm just going to kinda ignore the first post, i'm not a complete retard. i've done my research and i know what i need with the rest, if i had a question about those parts.. i would have asked.. ...thanks though!

i planned on running dsmlink because of the ease of use, i've burned chips and edited in hex for the eeprom chips on my sunbird gt, but don't feel like burning a new chip everytime i want to change something. and don't want to go through the hassle of trying to learn and successfully tune with a safc and translator(since i plan on running gm maft). so besides plinking down the money for the AEM, i'll go with link.

i've read posts from the users with the sbr60-1. everyone who uses it, loves it.. and i'm pretty sure i will not go bigger than a 60-1. but if there is something within the same performance range and similar cost wise, i'd like to check it out.

i don't see the point of buying something slightly larger than a 14b when i know i will want more. trying to be cost effective here... i know what i want, i'm just finishing on pieceing it all together.

slowboy- you think i will be fine with the 255? i'd rather have too much, and be able to dial it down instead of having almost enough and cutting it close on some occasions.


and thanks for all the reply so far.

*EDIT* i'm not trying to throw up a HP number or quarter mile time. i'm working around my mindset of a turbo (60-1) and that i want to run 25psi daily. i'm working around this and not trying to reach a set goal of 500hp or anything... i'd like to get the most from the setup(60-1 at 25psi).

 

[Coup D E'Tat]

We have made 513 WHP with our 60-1 "bolt on" internal gate on Nate's car about two years ago..... assume the turbine housing flows adequately.

Our bolt on 35R set up with external gate has made over 600 WHP, again please make the same assumption.

If you are stuck on the T3 turbine housing only, we can do them too

MGH

You guys run the PTE exhaust housings, right?

And yes, 500whp is fully capable in a bolt-on configuration, I'm just saying that it isn't "typical" and can be had easier with a better flowing housing.

 

[Slowboy]

You guys run the PTE exhaust housings, right?

And yes, 500whp is fully capable in a bolt-on configuration, I'm just saying that it isn't "typical" and can be had easier with a better flowing housing.

No, we do not use PTE's turbine housing, never have... However we do also sell the PTE turbos. We actually cast our GT turbine housing before PTE had an offering, and our "G" series housing shortly after PTE released their own.

Only reason I jumped in the thread was to make sure people understand that the bolt on turbine housings on the market today for the DSM are very well designed, and work incredibly well... even when compared to there T3 counterparts.

We have had plenty of FP's turbos here on the dyno make over 500 WHP, plenty of PTE SCM61's make over 500 WHP on our dyno.... all with bolt on turbine housings.

Sorry if I sounded jumpy

MGH

 

[Slowboy]

i'm just going to kinda ignore the first post, i'm not a complete retard. i've done my research and i know what i need with the rest, if i had a question about those parts.. i would have asked.. ...thanks though!

i planned on running dsmlink because of the ease of use, i've burned chips and edited in hex for the eeprom chips on my sunbird gt, but don't feel like burning a new chip everytime i want to change something. and don't want to go through the hassle of trying to learn and successfully tune with a safc and translator(since i plan on running gm maft). so besides plinking down the money for the AEM, i'll go with link.

i've read posts from the users with the sbr60-1. everyone who uses it, loves it.. and i'm pretty sure i will not go bigger than a 60-1. but if there is something within the same performance range and similar cost wise, i'd like to check it out.

i don't see the point of buying something slightly larger than a 14b when i know i will want more. trying to be cost effective here... i know what i want, i'm just finishing on pieceing it all together.

slowboy- you think i will be fine with the 255? i'd rather have too much, and be able to dial it down instead of having almost enough and cutting it close on some occasions.


and thanks for all the reply so far.

*EDIT* i'm not trying to throw up a HP number or quarter mile time. i'm working around my mindset of a turbo (60-1) and that i want to run 25psi daily. i'm working around this and not trying to reach a set goal of 500hp or anything... i'd like to get the most from the setup(60-1 at 25psi).

IMO.... you will be o.k. with a 255 HP assuming 450-500 WHP, anything over that I would not endorse

MGH

 

[92awddsm]

I run a 60-1(pte 5252 ordered from sbr) with 750cc injectors and a 255 walbro. I run 25psi on 93 octane and 30psi on race gas with no issues what so ever. Thats even through the stock fuel feed line. I would worry more about upgrading to a -6 or -8 feed line before I would worry about outflowing a 255 pump.

 

[deezay]

92awddsm - i plan on upgrading the lines the same time i add the pump and the rest of the system. i mentioned it in my original post. are you happy with your 60-1? besides manufactures.. you're running a setup close to what i want.. turbo/boost wise. i just want to make sure that this will be 'enough' for me. hahaha, but i've wondered if the gt35r would be more worthwhile in the long run over the 60-1.(just me thinking ahead of myself)


slowboy.. you are about to have a PM

and thanks for all the replies thus far.

 

[ICE_T]

I run a 60-1(pte 5252 ordered from sbr) with 750cc injectors and a 255 walbro. I run 25psi on 93 octane and 30psi on race gas with no issues what so ever. Thats even through the stock fuel feed line. I would worry more about upgrading to a -6 or -8 feed line before I would worry about outflowing a 255 pump.

what is tyour E.T with this setup??. hope it's not 12.9 @ 107mph,. because it's seem slow,. for this turbo??

 

[92awddsm]

what is tyour E.T with this setup??. hope it's not 12.9 @ 107mph,. because it's seem slow,. for this turbo??

No, its not a 12.9. If you look at the timeslip, you will see that it was 1.5 yrs ago. That was back when I had a 16g, stock cams, 2gmas, 550cc injectors, a broken center diff, and a multitude of other things. I just made some changes in the past couple of weeks and plan on taking it to the track this Friday night. I will post some times when I get home. My first 2 passes will be on pump gas and if I get time, I will add race gas and turn up the boost some. I am expecting some high 11 at the least.

I am very happy with my setup thus far. Im not sure how fast you want to go but the 60-1 seems to be a good setup for race and street driving. Right now, I see full boost at around 42-4300 rpm(25psi) and it is very streetable. I dont really know why I ran such a small turbo in the past. I thought it was for streetability but now that I have been driving with the 60-1, I almost hate 16g's. As far as a gt35r, Im sure you would be happy with that also. Only real difference would be a faster spool but I really like how mine spools. Just a heads up, once you go with something that big, consider a set of cams and a smim as some of the next upgrades.

 

[Coup D E'Tat]

No, we do not use PTE's turbine housing, never have... However we do also sell the PTE turbos. We actually cast our GT turbine housing before PTE had an offering, and our "G" series housing shortly after PTE released their own.

Only reason I jumped in the thread was to make sure people understand that the bolt on turbine housings on the market today for the DSM are very well designed, and work incredibly well... even when compared to there T3 counterparts.

We have had plenty of FP's turbos here on the dyno make over 500 WHP, plenty of PTE SCM61's make over 500 WHP on our dyno.... all with bolt on turbine housings.

Sorry if I sounded jumpy

MGH

No big deal, and yes, you're right - new housings "can" be designed to flow a good bit. I suppose I'm just irritated with the heap of shit Bullseye housing I had.

Oh well, T3 > Bullseye

 

[92awddsm]

No big deal, and yes, you're right - new housings "can" be designed to flow a good bit. I suppose I'm just irritated with the heap of shit Bullseye housing I had.

Oh well, T3 > Bullseye

But then again, I went from a t3 .63 a/r housing to my current pte bolt on housing and I am happier. I have a little better spool characteristics and better dp clearance. I too have heard of issues with the bullseye housing but no first hand experience with them.

 

[Coup D E'Tat]

But then again, I went from a t3 .63 a/r housing to my current pte bolt on housing and I am happier. I have a little better spool characteristics and better dp clearance. I too have heard of issues with the bullseye housing but no first hand experience with them.

Understandable. I weld, though, so I can make anything clear

And spool, yea, I hear ya on that one, too. I'm sure my housing will be laggier (is that a word?) but the power difference will make up for it I'm sure.

 

[92awddsm]

Understandable. I weld, though, so I can make anything clear

And spool, yea, I hear ya on that one, too. I'm sure my housing will be laggier (is that a word?) but the power difference will make up for it I'm sure.

I also weld, thats why mine cleared fine. And for power, It there is any difference, It wont be noticable. I basically went from a .63 t3 to suppesedly a .63(according to pte) mitsu. My guess is that they both flow about the same, just that the design of the mitsu housing creates more velocity which in turn spools quicker. Just think, a round funnel(mitsu housing) will flow better than a rectangular funnel(t3 housing) with both having the same volume and a/r ratio.

 

[tstkl]

if your worried about the 255 not being enof... go to a 290 (supra)...dsmmotorsports has them for 235, cheapest ive found them... also its a denso so its a direct factory replacement...

 

[Coup D E'Tat]

I also weld, thats why mine cleared fine. And for power, It there is any difference, It wont be noticable. I basically went from a .63 t3 to suppesedly a .63(according to pte) mitsu. My guess is that they both flow about the same, just that the design of the mitsu housing creates more velocity which in turn spools quicker. Just think, a round funnel(mitsu housing) will flow better than a rectangular funnel(t3 housing) with both having the same volume and a/r ratio.

Yes, but I'm not stepping up to a .63. I'm switching from a .5x or less Bullseye to a .82 T3. I've seen others gain good power from similar swaps, and ~30whp from .63 to .82 alone.

 

[BrokenTsi]

I just installed a 60-1, upgrading from a blown 50 trim, tonite I did 28psi on race gas with 880's, walbro 255 w/rewire and stock fuel lines. 880's are still overkill. I still kinda like my 50 trim better, but this turbo has way more top end. And spool time is ridiculously fast. I hit 30psi a little before 4k, stock head, hks 272's, evo 3 manifold.

 

[DSM90AWD]

Nice article by FP on A/R and Bolt-On ease vs performance HERE

Note the point that comparing A/Rs is pointless unless your within the same housing "family". Also note the compromises most bolt-on housings make in order to "bolt-on". Exhaust restriction due to design "dilutes" the combustion charge, which when freed up (via a larger freer-flowing housing) will provide more HP at a given boost level.

Mike.. I'm curious to know what the backpressure ratio of your GT housing on your 40psi runs?

 

[Slowboy]

Nice article by FP on A/R and Bolt-On ease vs performance HERE

Note the point that comparing A/Rs is pointless unless your within the same housing "family". Also note the compromises most bolt-on housings make in order to "bolt-on". Exhaust restriction due to design "dilutes" the combustion charge, which when freed up (via a larger freer-flowing housing) will provide more HP at a given boost level.

Mike.. I'm curious to know what the backpressure ratio of your GT housing on your 40psi runs?

We never measured the PR on Nate's car with the bolt on 35R.

I can make assumptions, but we know what they are like

MGH