Originally Posted by
Karlos G
Actuator is new mate (Collins -31).
They are shit anyway to be honest! Garretts are much better!
Originally Posted by
Karlos G
He said that a standard t3 cannot supply enough air flow over about 4000rpm to hold that sort of boost, if i had a electronic boost controller i could bleed more off before the actuator forcing it to hold 17psi but the turbo would last about 2 mins and i'd have stupidly high ACT's!
So recommended a Stage 2 T3 for the job!
I've had a standard T3 running & holding 21psi all the way to the 6200rpm redline on an 8v 2.0litre turbo engine! I've seen Cossies running more than that on a standard T3 aswell!
How are you currently managing to spike 17psi then? Bleed valve? Can you test the actuator with an air line to see if its setup correctly? The pre-load might not be set right!
What intercooler have you got?
Originally Posted by
lead_foot
What's the difference between a Standard T3 and a 'stage 2' T3?
I had the same thought!!!
Stage 2 T3 is usually only a 360 degree bearing. You would see identical ACTs on this than you would on a standard T3 except the turbo would last longer due to the better bearing. You will only start to see lower ACTs when the size of the turbo is increased so its not being worked as hard!