c34 stagea

[zal]

hey guys im currently looking at buying a new turbo for my stagea kinda wanna buy it tonight so i can be ready for the all jap day coming up 

what is the standard turbo flange size?

what is a good replacement turbo?

what are some good coils? spitfire?

what else should i be replacing? it has 100tho ks already had timing belt and water pump done

im going to replace the crack sensor, the sensor on the air intake (o2 sensor ?)

and anything else that i need to do

thanks guys 
 

[KiwiRS4T]

Why are you replacing the turbo at 100,000km (if that's genuine km)? If you want a bigger turbo you have to also look at intercooler, exhaust, injectors, fuel pump etc and of course an aftermarket ECU or a Nistune chip. The only coils I would suggest are OEM or Splitfires - and of course plugs while you are there.

The crank sensor is unlikely to need replacement nor is the sensor on the air intake (MAF sensor) but by all means replace the O2 sensor on the exhaust downpipe.

There is heaps of information in the Stagea (wagoneers) section especially in the DIY section.

https://www.sau.com.au/forums/topic/102808-stagea-d-i-ys-how-tos-f-y-is/

 

[zal]

the turbo is leaking according to the mechanic i took it to when i had the timing belt done

[KiwiRS4T]

Well if you are after a stock replacement it depends where you are - good idea to put your city and country at least in your profile. Most popular replacement that you can run with stock ecu etc is one from Hypergear (look up his thread and give him a phone).

 

[Jordy32]

Turbo is leaking? Leaking what?

Sure it's the turbo not just a crush washer or similar?

[zal]

Im near sydney aus

No idea i took it to a place called destoj well known place in  Newcastle

I wanna get the car back on the road so replacing the turbo im just going todo

[zal]

Apparently its leaking oil?

 

[KiwiRS4T]

Take a trip down to DVS

http://dynoseek.com.au/dvs-tuning

[zoomzoom]

Check the turbo for shaft play first. If that is OK, just fix the leak. If you want to go replacing the turbo, you'll be finding you need to do quite a few other things as well to make it worth it: exhaust, valve body upgrade if an auto car, FMIC, and tuning.

If you need to swap turbos without the supporting modifications, Id ask about turbos smaller than the 21U hypergear high flow unit. That will keep the engine response and power curve close to stock - something that is an important consideration for a daily driven, heavy vehicle.

[zal]

Yeh cool cool thanks for the information guys there is a few things that need to be done rocker cover seal need to figure out why its burning spark plugs as well something I really need to figure out I'm pulling the turbo off this weekend also the car is badged as a 2.8l and has a his 2.8l mod plate under the hood with a hks front mount what's the best way to tell if it is the 2.8 or not when I get it alsort I want to spend money on it and take it to next level I want around 300kw and yes I know I need to pay to play

[zoomzoom]

Unless it is a custom built stroked motor, there is no 2.8L motor. Its a 2.5L. If it was a custom motor it wouldn't have a stock turbo either.

[zal]

Well I know hks do a 2.8l strocker its got the plate from khs under the hood saying it's a 2.8 with the engine builders name with 2.8l badges all over it probably got taken out before it come over and yeh I'm 99% certain its stock turbo seams like stock ecu a well so that points out it's not 

[KiwiRS4T]

If you are really lucky it has had a 2.8 conversion and then been returned externally to stock - not all that likely but you could check by measuring the capacity of a cylinder.

[zal]

Turbo is definitely leaking and has heeps of play in it I'm not going back to stock here is what I'm looking at 

6boost manifold twinscroll 

GTX 3076R GEN 2 (not sure what housings to get or if x2 waste gates is necessary )

225 walbro fuel pump 

550cc injectors 

Spitfire coils 

Trans cooker

Looking at haltech ecu or nistune 

forward facing plenum 

Pwr radiator 

Its automatic and its staying that way so I know I need to keep the power around 280kw and even then I'll probably kill it so what auto trans options do I have other then a rebuilding the current 1 any 1 put a 5 speed or 6 speed auto out of something elce onto a rb25? 

 

Edited July 8, 2018 by zal

[KiwiRS4T]

You'll make 280KW with the stock manifolds...save the money for elsewhere  such as a manual conversion.