Thread: GT2559V Saab

Progress.

Intercooler in. What a job. Much prefer swapping gearboxs in and out....




'Just' have to get ducting from aircleaner-turbo-intercooler-inlet manifold. Return oil fitting/hose made up. Turbo bolted on. Exhaust. Then control system.

Originally Posted by the_grubb

It's got a vacuum actuator and a linear potentiometer on the variable vane control shaft.

I plan to make my own little stand alone control system which if something goes wrong will fail safe to fully 'open', ie. minimum boost.

If practical/possible with your control system:

Open the vanes when power is not required to reduce the pressure in the exhaust manifold (EMP), and hence pumping losses.

Close the vanes to assist braking.

Also fully cycle the vanes regularly (eg at start-up) to avoid soot build-up binding the vanes.

how thick is your i/c? did u have to move your radiator back to fit it in? it must have been tight running the lines above your lights? any more pics of the mounts, lines, etc?

Originally Posted by def-90

how thick is your i/c? did u have to move your radiator back to fit it in? it must have been tight running the lines above your lights? any more pics of the mounts, lines, etc?

IC 75mm thick - I believe it is a stock Supra S13 IC. Rad back 40mm. Yes was tight running above lights - but comes out at a nice height to link up to turbo and inlet manifold. It looked even tighter if I had of run it below the headlights.

Will get some pics.

Ok kool, mine is 600x300 and couldnt get yhe lines to run above the lights, i couldn't mount it high enough because of the bonnet shutting mechanism was in yhe way, still had to do a fair bit of surgery to get it to fit running below the lights

Finally got this installed - minus any control system (other than a manual switch that either opens or closes the vanes for me to play with)

The outlet on turbine is only 2 1/4in and I am a bit dissapointed with the outcome from the exhuast shop but none the less....

With no mods to the pump I was hitting about 13psi and 460c with vanes closed.

With fuel screw wound right out. I get about 20psi (the gauge I had lying about only goes to 15psi so this is a guesstimate. Not sure if the needle bottoms out there or its in fact where it is) and 560C with vanes closed.

I will continue to play

And it looks like bigger than 60mm wheels are avialable now for VNT turbos.


Diesel Tuning and Performance forums - Turbo Diesel Owners Club • View topic - Compressor Wheels.... small, Medium, LARGE and DMB

This is from the same guy in the UK who fitted a 56mm compressor wheel into a GT1849V for my work car (another project).
From the left is 49mm VW wheel, 56mm, biggest garrett 60mm and the TDI Turbos DMB on the right at 64mm OD, 49.6mm intake.

How would a monster wheel like that feature in regard to the known issue of breakage of the small diameter shafts in VNT's?
I know there are some different diameter shafts, so are those wheels only for the larger diameter ones?

Steve