No Boost R32 Gtr

[ae86 boy]

bought a project car (r32 gtr). finally got it up and going and its not hitting boost - at all

has hi mount t66 and external gate, boost tap, and power fc, stock bov (currently vented to atmosphere )

now i blocked up the bov's to see if they were leaking - still no boost

fiddled with the boost tap up and down - still no boost

rev the car, take it for a drive - wont make any boost whatsoever - not even 1psi

anyone have any ideas why it could be doing this.

only thing i can think of is faulty wastegate but when i had it off the car the spring in it had plenty of tension (gate was hard as f**k to push down)

please help

[mico]

dont the stock bovs have to be plumbed in ? did u check all piping ?

[Sunkist]

is it making any out of the ordinary sounds?

[blind_elk]

Check all the intercooler plumbing connections.

[ae86 boy]

The stock bov should be Plummer back but if it isn't it only really effects idle etc it's not going to completely stop it boosting. And to address this issue I blocked it off. There's no funny sounds. I've checked te ic pipes but will go over them again as i may have missed something

[ae86 boy]

Check intercooler piping. All sweet. Turbos def not seized as we took the inlet pipe off straight after we turned the car of and turbo blades were spinning fine. At a complete loss

[DVS JEZ]

No boost at all but still drives with power fc afm etc tells me there shouldnt be any air leaks.

Either turbo's not spooling or the wastegate is completely open which should still make some boost.

Take the wastegate pipe off and see if the exhaust is exiting it.

[ae86 boy]

Wastegate is definitely closed have done a fee little tests to confirm this. So the turbo isn't spooling? But turns easy by hand and has no shaft play?

[DVS JEZ]

Is the engine timing and all the basics set correctly?

Has the power fc been tuned before?

Take the dump pipe off and start the engine. See if the turbine is spinning and increases speed with the engine rpm.

Are the wheels still intact with fins?

Have u tried a different boost gauge?

[NSNPWR]

How hard are you revving it, that's a big turbo, might not make any boost till 5000ish???

[ae86 boy]

Exhaust wheel is fine so is the intake wheel. PFC is tuned to suit but could probs do with a lilttle tune up. Have completely disconnected boost tap and given it a go for a test. Still norhing. And have reved car umder load up to 7k

[R.3.2.G.T.R]

collapsed cat perhaps

[badhairdave]

collapsed cat would still make boost, just not do anything with it.

Can you hear the turbo spool up?

Have you confirmed that it definitely isn't making boost and that the issue isn't with the boost gauge? Stupid question i know but i have seen it happen.

Put it on a dyno. you'd be suprised what you can see when you look at the engine under load.

[ae86 boy]

collapsed cat would still make boost, just not do anything with it.

Can you hear the turbo spool up?

Have you confirmed that it definitely isn't making boost and that the issue isn't with the boost gauge? Stupid question i know but i have seen it happen.

Put it on a dyno. you'd be suprised what you can see when you look at the engine under load.

doesnt cat a cat. rest of exhaust is fine. definitely doesnt boost, or even try to boost.

take it for a drive and it just climbs through the revs fine until you change gear. only problem is it doesnt spool 1 bit,

its as though someone is opening the wastegate as soon as it makes boost, but am 99% sure this is not the case (see posts above)

going to check the fueling of it today.

thanks heaps for input - any input is really appreciated at this stage

[Rolls]

Can you jam the wastegate shut? Be careful when you do this as you will have no boost control at all.