.52 Exhaust Housing

[warpz0r]

hi all

.52 exhaust housing / wheel...

anyone have something similar on there rb25, rb30?

what is the standard t3 .ar exhaust size?

thanks

[danielson]

yeh but y?

[warpz0r]

just want to know what rpm max boost is reached and what front they have on it

[Guilt-Toy]

just want to know what rpm max boost is reached and what front they have on it

Hey mate

The VL turbo and bigger FJ20 turbo uses the .63 size which is on the bigger side of average for T3. Some come in .48 etc etc.

Boost will come on much later because of the bearings and wheel designs.. sometimes up to 3300rpm or later.

Your better off staying away from the T3 style turbo's as they usually make your skyline slower then what the standard turbo can offer (old trim types and bush bearings)

I put a VL turbo on my car with a T4 front wheel with a .64 rear housing and it made the car slower.

So be carefull when playing with these types of turbos on skylines.. I would go for a GCG highflow or a HKS style BB turbo for best results.

[warpz0r]

so what is bigger

.52 or .106?

[Craved]

you mean .106 or 1.06 ??

if it was a typo and you meant 1.06 then expect full boost up around 5000 rpm on a std rb25.

[warpz0r]

thanks 1.06 boost is at 5000rpm

so you would expext .52 at about 2500rpm?

thanks

[warpz0r]

basically im having a rb30det built up atm

with a turbo that has a to4b front and .52 rear...

what do you think will be the outcome?

thanks

[Craved]

i think it will boost real real quick, then it'll choke up top due to not enough flow through the exhaust.. just what i think will be the outcome.

remember that the rb30 has more exhaust gases due to the increased capacity.. so the 5000rpm example would be lower on a RB30DET

Edited March 31, 2006 by Craved

[Col-GTSX]

Id imagine a 1.06 housing on a rb30 with cams would reach 1 bar by 3600-3800rpm

[Craved]

yeah exactly... but no mention of cams..

i have the 1.12 housing on a HKS GT3040 on a std rb25 with tomei cams.. im getting full boost at 4700rpm

where as i have seen a GT30 turbo with a 0.84 reach full boost at the same rpm without cams..

Col - thats what im hoping to get full boost at once my rb30 is finished.

[Col-GTSX]

I see no problems there...

[paulr33]

if your building an engine and have very detailed specs and plans why would u rely on guess work for the turbocharger? dont choose an unknown spec t04 old skool compressor. learn to read compressor maps, work out what airflow you'd like depending on your application and choose a turbo that suits your requirements. that will take out the guess work and disappoint of a sucky combination (read expensive and lacking what you want). but imho the rear sounds too small, i'd expect it to come on instantly and drop off very quicky.