just shimmed my wastegate

[hajemesito]

I have had my car for about two years now. It came with 167,000 miles. I shimmed my turbo out with 4 washers and have a ten pound spring. It put me around 14psi. I have full open three inch exhaust amongst other mods. The car is a daily driver with stock original bottom end. Toyota head bolts re torqued. Lots of hard driving quite a few days at the track. I am now at 195,000 miles still no problems. Its all about maintenance and perhaps a little luck.

 

[87mgte]

I have had my car for about two years now. It came with 167,000 miles. I shimmed my turbo out with 4 washers and have a ten pound spring. It put me around 14psi. I have full open three inch exhaust amongst other mods. The car is a daily driver with stock original bottom end. Toyota head bolts re torqued. Lots of hard driving quite a few days at the track. I am now at 195,000 miles still no problems. Its all about maintenance and perhaps a little luck.

You know fuel cut's at 14.7 psi, right?

 

[Rennat]

wouldnt "shimming" the wastegate work for ANY car???? i just thought about that, i could have done this on my eclipse... any car with an internal wastegate can be shimmed. or am i just thinking a little crazy now???

 

[Nick M]

You know fuel cut's at 14.7 psi, right?

And how did you come up with this number? If you install a manifold and a GT42XX from Garrett, you probably won't make it to 14.7 psi.

 

[Rennat]

my brother a long time ago, with his turbo supra, he hit 18psi... haha. no fuel cut there, thing hauled ass.

 

[Dan_Gyoba]

If he hit 18PSI with no fuel cut, then something else must have been severely restricting.

FCO is based on airflow, not boost pressure. You can have all the boost pressure in the world, but if it's not flowing the air, then it's not making the power.

Also, altitude makes a difference. Higher altitude areas will allow 'more pressure' than low altitude, because the ambient pressure is lower.

@Nick: More or less my thinking on the subject.

A higher flow turbo will hit FCO at lower pressure. A lower restriction IC will lower the pressure that FCO comes on at, too. Porting and polishing the head, likewise, as well as a lower backpressure exhaust system.

From what I've been given to understand, MOST people will hit FCO between about 12-14 PSI with a stock CT26, stock fuel system, with intake and exhaust at an altitude below 1000 ft above sea level.

 

[theKnifeArtist]

^good info

 

[ThirstyMKthrice]

i still cant get passed nine psi. as for my mods....3" turbo back exhaust, no cats, apexi filter. aftermarket bov, i think thats about it. oh yeah, whilst doing my brakes today i learned my left front spring is cracked. it settled itself in so it wont be going anywhere for a while, i hope so atleast. under acceleration my boost gauge climbs to around 6, waits a second and then slams to 9. i dont understand. oh yeah i also have the HKS FCD. id take it off but i dont know jack about electric shat.

 

[Sawbladz]

You have a broken spring and you are still driving the car?

 

[Rennat]

everybody is doing it.:sarcasm:

and i know my brothers turbo supra had a few "issues" we'll say... lol

 

[ThirstyMKthrice]

haha, what else can i do? im broke and i need my car to get to work. work to pay bills, never enough for the car sadly....

 

[IJ.]

Then why on earth as you risking blowing the engine when you can't afford to repair it?

Fuck you guys crack me up sometimes...:nono:

 

[noah89t]

haha! im actually looking forward to the BHG, i just feel im not a true supra owner if i havnt replaced that.

haha, what else can i do? im broke and i need my car to get to work. work to pay bills, never enough for the car sadly....

i don't get it:dunno:

man, take those washers out, save the money you don't have and get a descent ebc. you are putting more tension than necessary on your wg.
find your boost leaks if you have any. do shit right the first time instead of wrong then fix the shit you broke and then try to go the right way.

 

[87mgte]

And how did you come up with this number? If you install a manifold and a GT42XX from Garrett, you probably won't make it to 14.7 psi.

Isn't stock fuel cut (in ideal conditions) somewhere around 14.7 psi? I could have sworn I've read that multiple times on the forums here... sorry if I was misinformed. lol, I realize having a GT4088 or somethin would definitely make you hit fuel cut "a little" bit before 14.7.

 

[87mgte]

So you need to be able to get to work, and you don't have the funds and apparently not the knowledge for a head gasket job, but yet you want to shim 32435 washers in there till your HG blows?:slap:

 

[ThirstyMKthrice]

erg whatever. someone please get rid of this thread...sorry for making it.

 

[johnathan1]

Isn't stock fuel cut (in ideal conditions) somewhere around 14.7 psi? I could have sworn I've read that multiple times on the forums here... sorry if I was misinformed. lol, I realize having a GT4088 or somethin would definitely make you hit fuel cut "a little" bit before 14.7.

Fuel cut happens around 12psi on a stock engine. i don't know where you got 14.7...maybe you are thinking of stoich AFR?

erg whatever. someone please get rid of this thread...sorry for making it.

Funny how these threads always end like this...seems like there are a bunch of civiceater89 clones running around on here lately...

 

[87mgte]

Fuel cut happens around 12psi on a stock engine. i don't know where you got 14.7...maybe you are thinking of stoich AFR?

Yeah, the stoichiometric point @ 14.7 for a/f? I don't know how I mixed those two up, but I probably did somewhere along the way. I could have sworn it was somewhere around 13 or 14 psi though. God I don't even know anymore.:nono:

 

[OneJoeZee]

He probably was thinking of 1J fuel cut which is around there.

-Chocolate Face-sama

 

[noah89t]

erg whatever. someone please get rid of this thread...sorry for making it.

the criticism must be hard to swallow.
do what you want to do, but some of the best info about your car will be found in these forums. good and bad.