classicauto

iTrader: (3)

When it comes to critical mounting surfaces such as manifolds, waterpump etc. I'm a torque ****.

I like to install a turbo by taking off the rear housing and torquing its flange evenly to the manifold, but am then presented with a problem of guessing the toruqe on the bolts holding the housing to the CHRA.

You can't exactly get a torque ractchet on those babies, at least not all of them...may get some with a universal...so what should you do?

I normally just get them all "even" and I've never had a problem, but I'm putting together another setup now and thought I'd pose the question.

1/2 turn past hand tight? 1/4 turn?

BTW - turbo is a GT3574 from A-spec.

13B-RX3

iTrader: (2)

You should be able to get a crows foot on it.

cewrx7r1

iTrader: (2)

If you got your turbo from A-Spec, the info shoulld have come with the turbo as mine did.

From the Garrett spec sheet for GT turbos.
V-band nut: 50 inch pounds except for GT40-50 110-130 inch pounds.
Compressor: 145-165 inch pounds.
Turbine: 185-215 inch pounds.

afterburn27

iTrader: (5)

Thanks! I also needed this info for my A-spec GT3574.

classicauto

iTrader: (3)

Thanks, yes that info didn't come with mine.

13B-RX3: I can get one on, but not on all of them.....maybe I'm not trying hard enough

cewrx7r1

iTrader: (2)

Maybe because my GT35R T3 is an actual production Garrett turbo which came in their box. Yours is an A-Spec bastard (good bastard) and they left out the card.