So I'm thinking about a twin turbo setup... Opinions?

[Super Bleeder!!]

just get a GT5591.5 and call it good.


one of my buddies in AZ has one of those on his 408ci turbo trans am.

[Goat Blower]

I ran 42psi last year on the 42 with ARP's and the OEM head gasket with no o-ring. Never saw any problems.

If I could find some A1's I would be happy, but right now I do not have any. So there for they are not on my modification list. :)

I know Marco had a few sets awhile back, maybe I should get in touch with him again and see if he received and still has a set in stock.

He's got six sets as of last week, probably down to one or two by now.

[Goat Blower]

Rau's current 80mm turbo spools at about my revlimiter.

I thought Brent said he had an 81mm. I might have heard wrong.

[EclipseGST]

He's got six sets as of last week, probably down to one or two by now.

Ordered the last set about 10mins after I posted that. Should be here by the end of the week. ;)


Parts sure accumulate fast!

[Swifty1638]

lol.

As for rau, I also thought it was a 81 or 84mm turbo. But, I never know anything, so whatever. ;)

-A. Swift

[FattyBoomBatty]

lol.

As for rau, I also thought it was a 81 or 84mm turbo. But, I never know anything, so whatever. ;)

-A. Swift

You don't know that.

[Shane@DBPerformance]

Actually I think it's a 78mm for NHRA now.

[Shane@DBPerformance]

They have now changed the rules for the 4G63 motor specifically, he will be forced down to a 74mm turbo soon.

[JET]

That is BS! 4g63's own all so now they have to put a limit on him, that is ghey. Do they specifically say 4g63 or Mitsu 4 cylinders? It could be a good time to switch to a 4g64 :D

[Shane@DBPerformance]

It says 4G63 specifically, but they also have a wieght section for the "4G63" that has 2 breakdowns. One for up to 2.4 liters, and a higher weight for 2.41 to 2.5 liters. So I assume any 4G varients are meant to fall under