Turbo replacement!!

[Carfreak]

Hi!

I´m running a Garret Gt35R bb turbo with ar.73 intake and a v-band 3" exhaust but I want better spool so just wounder what turbo u recommend!

My goal is max 600hp, fast spool, t3 flange and 3" v-band out - any sugestions ?

[Thuppu]

So, how is your spool now?

[Carfreak]

So, how is your spool now?

I have full boost at 4-4500rpm.. Could be my homemade ic piping that´s restricting the flow to.

[Jamo]

Problem is you've broken the spool ceiling on the 2.2 to get 600 bhp you're in 4-5k spool area, below it you can run to 550 with a 3-4k spool 2.2 engine

I'd more look at your cam setup rather than a new turbo to see if you can get a better spool

[Carfreak]

Problem is you've broken the spool ceiling on the 2.2 to get 600 bhp you're in 4-5k spool area, below it you can run to 550 with a 3-4k spool 2.2 engine

I'd more look at your cam setup rather than a new turbo to see if you can get a better spool

Okey, that´s what I thought.. I´m running 7a cams but will go over to cat cams instead!

My goal is 500bhp after tuning it..

[cooperquattro]

What size exhaust housing????
What rpm 's full boost achieved at??
What boost pressure do you run??

[Jamo]

Okey, that´s what I thought.. I´m running 7a cams but will go over to cat cams instead!

My goal is 500bhp after tuning it..

Running a pair of 7A cams increase lag in stock timing, the alternative is reclock them per Audi_CQ suggestions ( need adjust cams sprockets and wheels ) .

Yeah cat cams would be a good shout or Schrick

[Thuppu]

Holset HX35 Super is a 500hp turbo and the spool is somwhere like 3500rpm's...

http://koti.mbnet.fi/pro-ht/Audi_URS4/other/s4-2.2-20vt_hx35super_dyno.pdf

I'm running the HX40 Super and 1bar seems to be at ~4250rpm, not yet mapped. This is a 600+hp turbo.

[Jamo]

There's a lot to do before changing turbos, like he could send it away for the HTA billet wheel upgrade which will improve spool

[prosty]

Think of it as foreplay with a good release, just like Jamo sais. "En som väntar på något gott" (one who waits for something good) :-)

[Nik0las]

what about GTX3076R recording to the charts this is 600hp turbo and full boost is achived earlier?

[Jamo]

GTX3076r is a pile of poo, turbine wheel is too small

[Billman]

Holset HX35 Super is a 500hp turbo and the spool is somwhere like 3500rpm's...

http://koti.mbnet.fi/pro-ht/Audi_URS4/other/s4-2.2-20vt_hx35super_dyno.pdf

I'm running the HX40 Super and 1bar seems to be at ~4250rpm, not yet mapped. This is a 600+hp turbo.

These spool times depend mainly on the turbine housing. Your's a very big one on the Super40 but needed for max HP.

[Thuppu]

Billman, you'r right. I have a size #16 housing, in A/R sizing it should be something between .80 - 1.00.

[Billman]

Billman, you'r right. I have a size #16 housing, in A/R sizing it should be something between .80 - 1.00.

more like 1.1 AR