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turbo 76mm

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Old

09-28-2008, 06:24 PM

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turbo 76mm

Hi guys i want to konw if i can put turbo 76mm T4 for my Engine 402 C.I.D or the T4 flange its Small for me ?

Last edited by ls1290; 09-30-2008 at 07:59 AM.

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Old

09-28-2008, 07:06 PM

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Depends on the level of power you are wanting to make?

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Old

09-28-2008, 07:12 PM

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Quote:

Originally Posted by NAVY

Hi gays i want to konw if i can put turbo 76mm T4 for my Engine 402 C.I.D or the T4 flange its smoll for me ?

Haha well thats a good way to get people to help you...

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Old

09-28-2008, 07:54 PM

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850+ rwhp

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Old

09-28-2008, 08:23 PM

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go at least a st80, 76 wil be too small imo

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Old

09-29-2008, 10:19 PM

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I'm talking about T4 flange

, there are no problems ( back Pressure )

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Old

09-29-2008, 10:53 PM

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You are wanting to much power out of a t4...it will be much happier with a larger turbo.

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Old

09-30-2008, 02:53 AM

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What turbo size are you using now with the 730 rwhp in your signature?

I am no expert but I think 850RWHP can be had with T4.

Last edited by bluecamaroz28; 09-30-2008 at 01:12 PM.

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Old

09-30-2008, 10:28 AM

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850 can be done with a T4, but backpressure will be VERY high.

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Old

09-30-2008, 10:33 AM

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What is the smallest sized piping T6 framed turbos require? 3" Downpipe/ 3" Intake?

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09-30-2008, 10:35 AM

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4" intake typically with 3.5" downpipe after you reduce it from the 5" outlet flange. This will only apply to the smaller T6 units.

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Old

09-30-2008, 10:38 AM

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Good lordy!!! Didn't realize the T6 was that much larger than a T4.

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Old

09-30-2008, 11:06 AM

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Quote:

Originally Posted by DrTurbo

4" intake typically with 3.5" downpipe after you reduce it from the 5" outlet flange. This will only apply to the smaller T6 units.

Upto what turbo size is the 3.5" dp good enough? S80, S85 or S88?

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Old

09-30-2008, 11:18 AM

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I personally don't like anything larger then the S80 running a 3.5" DP...but that is me.

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Old

09-30-2008, 11:59 AM

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So the back pressure issues are really dependent on the size of the Exhaust housing (T4/T6)? Or can you step up to a larger turbo (say 76 - 80) on the same frame and lower the back pressure?

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Old

09-30-2008, 12:56 PM

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With your size motor you really need a t6 flanged turbo. You can out the biggest, best flowing exhaust wheel in a t4 flange and it will still have high backpressure.

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Old

09-30-2008, 01:46 PM

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The PT88 is a great T4 flanged turbo and seems to be happy at 800. Now when the boost is put to it I am sure the back pressure starts showing its ugly head.

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Old

09-30-2008, 01:51 PM

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Quote:

Originally Posted by lbz34

Now when the boost is put to it I am sure the back pressure starts showing its ugly head.

I can vouch for that.

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Old

09-30-2008, 04:11 PM

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Quote:

Originally Posted by black98ws6ta

I can vouch for that.

Yes, big time!!

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Old

10-01-2008, 10:09 PM

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thank you guys for advice

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2007, 408, 76, 76mm, camaro, compare, g6, kit, pontiac, precision, s85, street, t4, t6, tti, turbo, turbos

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