!HELP! Will a T04 69 Trim wheel fit in a PTE Mitsu exhaust housing?

[insanewayne]

I am asking this question because apperently I have a SCM-6169E, emphasis on the M here. I've never seen this turbo listed, ever. The highest SCM series turbo I've seen is the 6152E, I E-mailed Joe at PTE, he said that it IS possible to have a SCM-6169E.

Can the T04 wheel even fit in the PTE Mitsu housing?

What kind of spool can I expect on a 2 liter? I know if it was in a T3 housing, it would be close to 5000 RPM, but in this lil bi*** mitsu housing, could this actually be a deadly all around combo?

The previous owner ran a mid 10 with this turbo on a 2.4 for reference.

Thanks,

Wayne

 

[insanewayne]

Where are all the experts/wisemen/mods/vendors ? I know you guys are out there.

 

[nanokpsi]

Yes it is possible. You probably have that wheel because the t350 wheel is on back order from time to time. You can run up to a P trim in the mitsu housing. Flow for your wheel should be in between a p tim and t 350. Its hard to say if the bigger wheel will wrok better in there. Some housing aren;'t designed to have that big of wheel, but there isn't that much info on the mitsu housing either way. If the guy you got it from was running a mid 10, he was probably i the 500-550 whp range, which is a good number for a PTE turbine housing. Lag should be around 4500-4700.

 

[insanewayne]

That pretty much just confirmed my thoughts. I wish someone else on here was running an O-trim wheel in their mitsu housing though, it'd be nice to hear some other experiences.

Thanks for the reply nanokpsi.

MY list for reference....

272 Regrinds
255 walbro HO
Aeromotive AFPR
MAF-T + 3" Gm Maf
ACT2600 + Fidanza
Delphi 75lbsmin (785cc)
HKS SSQV
SBR Ported 7cm2 Manifold
Tial 46mm Ext WG
AEM UEGO
2.5" 02 housing
24x12x3 FMIC
Full 3" exhaust
2.5" LICP
3" UICP
EPROM with BURN1 Eprom burner....basically I have the tuning equivilant of DSMlink, just without the conveniece...


I'm hoping for mid-high 11's, car is a 2940lbs 91 Talon Tsi, with a shitty tranny.

I have another question, but I might make another post for it.
I rebuilt the head around 12,000 KM's ago...I re-used the stock head bolts, because they aren't torque to yeild, (thanks to my teacher)....anyways, I think they received 5lbs more torque then stock...not that it matter a whole lot, but just for reference.

I have a set of ARP's sitting here...I was going to install them on at a time with the old HG and head still on the car. My machinist said I'd probably be alright, and I've read of it being done on here....but after talkin to a few verteran guys...and creating my own opinion, I don't think it will last...chances are the seal will break what I release the pressure on one of them.

Anyways, with a stock HG and re-used 91 head bolts, how much boost do you guys predict my motor will handle at 11-11.5:1 AFR on 94oct. I want to run 25psi until it blows the HG. Then just toss in a MLS and the ARP's....

What do you gus think?

Thanks,

Wayne

Oh and if you or anyone you know is running the t04 69 trim wheel in the mitsu housing please post here and give me some details, thanks.

 

[dsm-onster]

Anyways, with a stock HG and re-used 91 head bolts, how much boost do you guys predict my motor will handle at 11-11.5:1 AFR on 94oct. I want to run 25psi until it blows the HG. Then just toss in a MLS and the ARP's....

What do you gus think?

It is not the boost that's hard on the HG, it is the detonation. Depending on your patience (SLOWLY upping varables during your tuning process), you may get away with it for a long time. Tune for zero knock.

Why get an MLS headgasket? Many, many guys have gone to 30 psi consistantly on oem HGs and arp studs. Besides You should resurface your head before you use a MLS HG. The surfaces have to be really, really even. Expect leaks if you don't. . . So that's more money on top of an expensive part that you don't need to run 30 psi consistantly.

 

[insanewayne]

My plan was to run what I could with zero knock, till I run out of fuel basically....

If it came time to do an MLS, don't worry I was at least going to resurface the head...if not wait till I fully rebuild the motor and do the block as well.

As far as detonation being the only thing that blows HG's....I'm not sure I agree with you. When you cram in more air and fuel, you compressing and exploding a larger mixture, which results in a more powerful explosion in the cylinder, which in my mechanical opinon would put more stress on the HG. Specially with resused stock head bolts...although I'm not sure what cyclinder pressures there good until. Don't get me wrong though, I understand how Detonation would be worse.

You may be completely right, and I may be wrong.

Anyone else with some input?

Either way I'm pretty sure I'll do what I had planned and run a conservative tune (11-11.5:1) with zero knock, and run it till the HG goes...I'll know when it goes, and it won't harm anything when it does, so thats good. Unless of courses I didn't notice it and coolant was getting into my oil, then some damages could be done, but I keep a good eye on my engine, especially once all these mods are in, so that won't happen.

 

[dsm-onster]

As far as detonation being the only thing that blows HG's....I'm not sure I agree with you. When you cram in more air and fuel, you compressing and exploding a larger mixture, which results in a more powerful explosion in the cylinder, which in my mechanical opinon would put more stress on the HG. Specially with resused stock head bolts...although I'm not sure what cyclinder pressures there good until. Don't get me wrong though, I understand how Detonation would be worse.

Guys have gotten away with 25+ psi on large turbos before they get a spell of detonation. Detonation pressures exceed power stroke peek pressures two fold at the minimum. Guys don't blow their headgasket at 18 psi with detonation. Detonation pressures at 18 psi is like running at least 36 psi (the best "two fold" example i could think of)with no detonation.

Super-rapidly exploding gasses being compressed by a piston at lower power levels puts much more force on a high horsepower setup. So if the head does not lift, then you can theoretically get away with any horsepower level up to the point that you're running cylinder pressures that exceed the detonation pressures that cause a blown head gasket; as long as you do not get detonation .

Nevertheless, several dsm wizemen and many, many other experienced dsm guys here have gone to 28-30 psi very frequently with just arp studs and a stock HG and not blown a head gasket or even wonder if it will. Personally i've gone to 28 psi several times. so no matter what you don't need a MLS HG until after this level.

 

[insanewayne]

How long you figure my stock head bolts will hold 25-30psi, with zero knock? I'll at least get 1000 km's eh? I just want enough to at least get it tuned.

Thanks for the reply though, that makes sense.

Now I just need to find someone running the 69trim T04 wheel in their SCM61.