Swapping From Gtx3576 To Gtx3582

[frozenxr6t]

and news on the new setup

[747pwr]

I work away so nothing happening this week- get back mid week and will be picking up new housing and turbo to assemble and put it all back together - hopefully tuned before the weekend

[Bomber]

I couldn't get mine to make less than 18psi

[747pwr]

That's common if your port job is dodgy

Fitted the new set up today - hopefully tuned tomorrow or Friday

Edited 12/08/15 11:22 AM by 747pwr

[747pwr]

Picture of the bay yesterday after installing the gtx3582 dropped it off for a tune this morning on 98.

Initial thoughts - this thing is quiet and wasn't feeling much torque under 3000rpm - mind you was only cruising to the workshop.

[JETURBO]

Mate the 76 and 82 are a noticeable step apart

We did try to tell you

[747pwr]

Yeah I'm not saying it's bad - I wanted the power to shift higher In the revs, the 76 fell over to early for MY liking

[BenDoCo]

Ya shoulda told ya tuna to fix it then but no matter now as I see that some very lucky person now has a 76.

Congrats - whoever bought it

[747pwr]

Wasn't the tuners fault - last tuning session cut short due to a boost issue/mechanical problem so tuned best we could - got bored one day and started this thread - got some good advice and found the problem, always wanted the bigger turbo and once the 76 sold the swap cost me a couple hundred plus the tune, car was apart and had to retune anyway was kind of two birds one stone.

[747pwr]

Was on dyno today briefly, under boosting sorted, now over boosting issue with new turbo/housing/wastegate

Dialed in 17psi would make it until 3800 then 20psi by 5000 till red line

I bench tested the actuator would open at 15psi on any preload setting, I set the preload to about 3mm used to compressor to push rod onto waste gate, which was the least preload to make the valve not spin on the housing when I tried. Could still move the actuator rod by hand if hanging off it, way easier than the turbo smart set up

But I read they use much less preload than the turbo smart part.

The flapper valve is a 38mm item and we ported it slightly smaller than previous housing to try keep some more meat to prevent cracking this one.

Does it sound like I set the actuator up right ?

Good chance I'll have to pull off housing and open port up some more ? It was d-shaped like shown on here.

Guess I'll be in shed all weekend

But it did make 400rwkw on 98, reduced timing 17psi building to 20. Which is a start haha