garrett gtx3576r ar .82 vs ar 1.06 Undivided

[A80Avant]

I have also read the 0.63 ar housing doesn't work well with the gr35 turbine.

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I have as well but I wouldn't mind it if I were looking at googood spool and early boost at cost of pub hp numbers.

However if my car doesn't sell and I am forced to change my HTA I'd probably go for a precision this time on equal power figures.

[diesel des]

62.35 and 68mm.

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[Thuppu]

Des, what size is the turbine?

[diesel des]

I have also read the 0.63 ar housing doesn't work well with the gr35 turbine.

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[s2dk]

did you go with the gtx3576r?

[Jamo]

The only person I have seen get good results on an I5 with a 35r and 63 hotside is Hapster and to this day I have no idea how they did it

[prj]

Because of crazy backpressure and high EGT.
600hp you will most definitely not get with .63, even 550hp will be a struggle.

[yannS2]

.63 is not a good idea.

Why ? It's will spool fast. ( Target = 550-600 hp )

[Bowie69]

'Standard' unleaded is 95 RON over here, 'Super Unleaded' can be as much as 105 when tested, but I think it pertains to be ~98-100 on the sticker.

[prj]

More like 8.0:1 is needed.

That's crank hp. You don't hit a wall at 550, you start hitting a wall.
It is very difficult to get more than 650hp on pump fuel, definitely not with a 8.5:1 CR.

Our fuel and especially UK fuel is much better than in the US.

[my2000apb]

.82

CR is a bit high to extract full power without some kind of WMI, race fuel or E85.
You will start hitting a wall at 550hp.

GL.

is that bhp or whp?

is good pump fuel that bad over there?
I would have thought 8.5:1 would be fine

[strokerrules]

.82

CR is a bit high to extract full power without some kind of WMI, race fuel or E85.
You will start hitting a wall at 550hp.

GL.

tought the cr was just fine. it needs more like 8.0:1???

can i use a double gasket to fix this?
or what is te best way to do it wouthout buying an new set of pistons.

in germany i can get regular fuel with an 102 octane doesnt that do the job on cr8.5:1

[A80Avant]

I was given that option of the 0.63 if I wanted to just go over 500. But definitely won't take full advantage of the turbo. Personally I wouldn't care as I like faster spooling rather than high rpm driving

[prj]

.63 is not a good idea.

[yannS2]

Gtx3576 with ar63 ?