turbo size

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Sep 15, 2008 | 08:41 AM

Chris'stransam

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turbo size

I am building a street and strip turbo 408 . The car is driven allmost every day, and the car is a m6. I am whant to run 10 - 15 psi .

I need to know what size turbo to use .

Sep 15, 2008 | 10:40 AM

rubbersdown

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depends how much hp you want. If your looking for 850+rwhp go with an 88mm. If you are looking for crazy power, go with a 91-94mm. call forced inductions, they will hook you up.

Sep 15, 2008 | 10:49 AM

mohennessey

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91mm turbo would do just fine

Sep 15, 2008 | 11:00 AM

rubbersdown

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yah but with a good 91mm hes going to be making 1000rwhp at 15psi, in a daily driven m6 car he will be going through tires like there going out of style, the car will just sit there and spin all day long.

Sep 15, 2008 | 12:55 PM

DrTurbo

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Quote:

Originally Posted by rubbersdown

If you have the funds, the S91 or the FI-91X would be the one to have. If your on a budget, then go with the GT88. 88mm unit for less then 1200 bucks. Hard to beat that.

Sep 15, 2008 | 01:13 PM

bluecamaroz28

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RWHP and ET goals can help in sizing your turbo. Also, which kit are you going with? Single or twin turbo?

I would say 80-91mm depending on your goals but being M6 will be difficult to spool 91mm on the street.

Sep 15, 2008 | 07:59 PM

Firechikn

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Quote:

Originally Posted by rubbersdown

With the 91 at 15 psi, he should be close to 900 + or -. When I was running the 6 speed, my car would hardly spin at all. I could break spool in 1st to 11-12 lb and it would hardly roll the tires over. The only problem is him driving on 325/15 mt every day. No fun in the rain. haha

For the record. The 91 is not hard to spool with a 6 speed on the street. I could roll on it in 1st, full boost ( 14 lb at the time ), or brake spool rolling in 1st would get to 11-12lb real easy. Like stated above, the boost curve was real easy to hook. Prabably started spooling at 3200 full spool around 38-3900. The 6speed was much easier on tires than the new auto is, by a long shot. Reminder, I do run 325 mt dr's. I'm sure any street tire will be a smoke show.

Last edited by Firechikn; Sep 15, 2008 at 08:05 PM.