Benjamin_John93

Done a boost leak test, there were no leaks. Took car for a spirited drive and no issues whatsoever, its like it only plays up at night, cooler air maybe? [emoji14]

Will perform a boost leak test again today and see how it goes. I decided to check the condition of my spark plugs, they are PFR5G-11 but are gapped at .6mm, would this cause issues?

So turns out that not only was the boost signal coming from manifold the problem but also both my factory boost solenoid and boost tee are faulty. I ran the hose straight from the intercooler to wastegate and get 5psi with no issues, i then wanted more boost so i connected the hose from intercooler to stock boost solenoid(the top nipple) and a hose from wastegate to the solenoid(bottom nipple) and thr car ran like shit and then died on me about 200m down the road.(and yes the solenoid was plugged in) So now im running a 10psi wastegate from an r32 which seemed to be working perfectly the first time i drove it, went to drive it again later that night and as i was slowing down for lights it died on me and started running like shit (im assuming it R&R). So im wondering if i keep the 10psi actuator on is the car gonna keep going into r&r until i get an aftermarket ecu + tune? And is my boost solenoid had it or am i plumbing it up wrong?

Thanks for the help everyone, i tapped a new fitting into the intercooler piping as suggested and boost is holding perfectly, no more overboosting! [emoji4]

Okay thanks heaps mate I will tap a fitting into the pipework and run it straight to the actuator for now, ill be sure to let you know how it goes. Thanks again for the help, really appreciate it

This is the wastegate on the car, after some googling looks to be an r34 one? This one is a spare i have in the garage which was ment to be off an r33. (has asn79 written on it )

Cant find any hoses on the intercooler piping that run to throttle body, there is one hose that runs from throttle body to charcoal canister?

There is nowhere on my turbos compressor housing to connect the hose to like there should be, and nothing on the intercooler piping either. Could the issue be that the hose goes from manifold to boost tee then wastegate?

It is turned all the way anti clockwise and back off ever so sightly. But i have the same issue even if i connect it to the stock boost controller aswell.

The boost tee? Its wound all the way down but backed off a little

Finally got myself a 1996 R33 GTST after owning a few n/a's. Car is stock except for front mount intercooler and boost tee(currently wound all the way down). 3" exhaust from turbo back, cat has been gutted. But im having issues with boost. I only want to run 7-10 psi max but for some reason the boost will just continue to climb untill over 15psi then starts to cut out. I have tried using the stock boost controller but makes no difference. Car had a boost leak which i thought was the problem but i did a boost leak test and fixed the leak, problem still exists. I decided to check out the wastegate actuator but seems to open perfectly fine(not hitting dump). On inspection of the turbo i noticed that there was no compressor outlet where a hose should run from it, to the boost controller, then into the wastegate actuator shouldnt it? Instead my car has a T piece from a hose that goes from the manifold to the charcoal canister? Dont know much about turbo cars as this is my first and really dont understand why its overboosting so much?

Ball

.

But the cost and amount of effort involved would be alot more then an engine swap wouldnt it?

Howd you manage that? And why didnt you sell the na and just put a det in instead?

Okay after a lot of thought and reading through all the replys im thinking of giving the car a tidy up and try and sell it, then buy an r33 gtst with the money hopefully. Thank you to everyone who opened my eyes on this, glad i didnt just go ahead otherwise i would have most definitely destroyed my engine.

I dont wanna sell and buy a gtt as i got my r34 for alot lower then the average market price and have grown attached to it. Well if the n/a pump and injectors are fine for 5psi ill buy a piggyback ecu and get it tuned to stop it from leaning out, right?

So the standard NA pump would still be fine for the 10psi setup?

I understand that if i wanna run 10psi+ i need to change the injectors and ecu, but what about the fuel pump? Surely that needs to be changed also right? I might go down that road later on but for now i just wanna know if i can run 5psi with n/a injectors, fuel pump and ecu?

So i have been collecting parts needed to do a turbo conversion on my r34 rb25de Neo for quite some time now and am keen to go ahead with the conversion. I have: -R33 turbo -R33 turbo manifold + dump -R33 SMIC + piping -Braided water lines/banjos -Braided oil line/banjo + oil retun -Boost Tee, boost gauge. I wanna know if i can run 5psi max with the stock rb25de Neo injectors, fuel pump and N/A ecu? It seems every conversion i have seen has been done different, the setups i have seen so far are: 1) N/A injectors, N/A ecu, walbro fuel pump. Boost at 5psi 2) 370cc injectors, Gtt ecu, N/A fuel pump. Boost at 5psi 3) 370cc injectors, Emange blue ecu, walbro fuel pump. So can i convert my rb25de Neo to a turbo using the N/A injectors and fuel pump if i dont go over 5psi?

(The bung im talking about located on the right side of the engine below the exhaust manifold)

Hey guys looking to do a turbo conversion on my r34 soon and just piecing together the parts i need before i begin. I have checked the side of the engine for an oil return, found that it has the bung which should make things alot easier, i am just wondering what size the fitting needs to be? Thanks!

I ended up fixing it by cutting the the end off, I then shaved the end and tapped a hole through and tightly screwed in an double ended iragation piece from bunnings, looks and works as good as a new one!

Anyone?