R32gtr Hks T04r Not Enough Boost

[wrxkilla]

yes i accepted this above in the posts somewhere, i think definatley could do with maybe a 40 or 50mm application

I think this can be put to the back of your minds for now.

YOU SHOULD BE ABLE TO MECHANICALLY KEEP IT SHUT?

this is my problem. it shouldnt be even opening yet i have 1.3-1.7bar spring.

i wish i could see 1.3 bar. At minimum you should be able to run spring rate.

I cant even do that.

if I could do that somehow and wasnt able to control my boost then i would agree...

but until then i cant do the easy way out, arrg its to big maate. lol

I'll cross that bridge when i come to it.

I have no reason to beleive at all this application wasnt working in the past for the previous owner.

I know of a few gtrs using the 60mm GT and GTII wastegate on t04r, t04z and t51r, and it can control fine.

although i do agree in principil a smaller one would be better suited.

thanks guys

mick

[wrxkilla]

ah well, just a bump up for anyone intrested.

will be dropping the exhaust, if no improvement, i will buy a new wastegate.

will let you guys know how it goes in case your intrested.

thanks

Michael

[Beer Baron]

i am keen to see what it turns out to be. bound to be some simple 2 dollar part killing your fun.

[JH32]

I'm keen too .... keep us posted on your results

[T04GTR]

yeah have checked all gaskets, doesnt seem to be any leaks.

you need to feed boost presure into the top of the gate!!!

if its got funny clip things just swap what sides they go on...

need to do this to see.

[GTLimited]

I have the exact same gate as you. With the 1.3-1.7 Bar spring . You can borrow it to see if it makes a difference.

Cheers

Sam

[wrxkilla]

damn

i cant beleive you posted that mate - your a legend.

except i hadnt checked back in this thread since i last posted.

and i have since bought a Brand Spanking new HKS 60mm GT wastegate.

And dam, still have the same problem! arrrgg. i wish i saw your offer.

lol

[GTLimited]

Man that sucks! I wish i could have gotten in earlier.

I have the 1.3-1.7bar spring set.

You wouldn't have any smaller range spring set spare or for sale/swap?

Cheers

Sam

[wrxkilla]

well for the ones liking pics.

here is new wastegate fitted also with 1.3-1.7 spring.

Having same issues.

Cracks open at approx 0.9bar and screams away.

so bought a spanker wastegate - what else could be issue? some sort of backpressure problem? defo droping the exhaust tomorow night.

(remember its a big freeflowing effort no cat) (andwastegate is venting to atmo)

thanks

Michael

[wrxkilla]

hi gt limited,

yeah i'll pm you mate.

[Morgs]

You don't have a vaccum leak by any chance do you?

Once we put mine all together there was still a hole which needed to be plugged in the bottom of the plenum. Same symptoms.

[wrxkilla]

really?

thats just what i was after, someone thats had same exact symptoms?

same thing, would just keep cracking open at a lower boost level?

and you never heard any leaks etc?

where exactly was the hole in the bottom of the plenum?

I am going to tripple check everything tonight - gunna pull off every intercooler pipe and refit.

mick

[wrxkilla]

Just a quickie.

i know all the way i have convinced myself this cant be the turbo.

could it be? Any experts want to share an opinion?

i mean its not the turbos fault the wastegate cracks open and lets off the excess over 0.9....

if it was the turbo, then it would struggle to make teh boost, but the wastegate would stay closed yeah????

thanks

michael

[Beer Baron]

well it's possible if the turbine housing is having trouble flowing the exhaust gas it could force the wastegate valve to open, but it seems unlikely.

Man, I can't believe the new wastegate didn't fit the problem!! D'oh

[wrxkilla]

yeah man

PWNED.

cost a fair bit of cash too.

spewing, car runs so smooth, has so much potential, just want more boost!!!

i just dont want to rip turbo off and get it rebuilt for the fun of it lol.

[Beer Baron]

just imagine the 4th gear burnouts you will be pulling when it's fixed

[wrxkilla]

hahahaha

ive been imaging them for a while now.

:D

[saliya]

Hey,

If the exhaust is making heaps of backpressure, the gate will open earlier than you'd like.

Remove the exhaust in sections (start at the back of the car, work forward to the turbo or

as close as you can get) testing each time. It _could_ be a simple blockage. Eliminate

the exhaust as a possibility before trying the following:

* Try leaving the top wg hose connected, and disconnecting the bottom hose. This will maximise

pressure keeping the gate closed. If boost is always higher than backpressure, in theory

the gate can't open, ever.

* Or you could try welding the screamer pipe shut with a disc - this is the same thing as removing

the wastegate completely. It might still crack open, but the gas can't go anywhere.

While doing either of these tests, remember that your wastegate isn't working - you need to

control boost with your right foot and be _very_ careful... overboost isn't fun for your motor

Regards,

Saliya

[wrxkilla]

Ok well, i pulled the dump off and inspected the exch side of the turbo.

seemd all ok, all blades in tact looking good. no shaft play.

so thats looking ok.

went to remove front pipe, and i have rounded off a bolt. fark...

lol

[TommO]

Everyone point and laugh at wrxkilla for not pulling his exhaust off earlier, and driving around at half the cars potential :lol: :lol: :lol:

Good to hear you got it sorted.

lol