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-   -   Turbo T3 -- BMW 318ti ( Help) (http://www.318ti.org/forum/showthread.php?t=31363)

AR Black 08-15-2010 12:46 AM

Turbo T3 -- BMW 318ti ( Help)
 
Ok. I am thinking of buying a Turbo T3 (AR.70 and AR.48 Exhaust)
My question is:
A few would load RPM boost in my 318ti?
Maybe 3000rpm?

xxxJohnBoyxxx 08-15-2010 03:40 PM

Quote:

Originally Posted by AR Black (Post 278479)
Ok. I am thinking of buying a Turbo T3 (AR.70 and AR.48 Exhaust)
My question is:
A few would load RPM boost in my 318ti?
Maybe 3000rpm?

Your question is not clear? I think what you are ask is about turbo spool

The exhaust A/R determines spool. I run a .63 A/R and spool around 3,200 rpm. With a .43 A/R you should spool earlier so maybe around 2,600rpm with full boost at 3,000rpm. The spool happens quick and boost hits very hard:biggrin:

The .70 on the compressor wheel determines the maximum boost you can run. I run a .70 A.R which is for big boost. You are running the same compressor A/R so you should be able to boost 25psi or higher

AR Black 08-15-2010 05:39 PM

Quote:

Originally Posted by xxxJohnBoyxxx (Post 278511)
Your question is not clear? I think what you are ask is about turbo spool

The exhaust A/R determines spool. I run a .63 A/R and spool around 3,200 rpm. With a .43 A/R you should spool earlier so maybe around 2,600rpm with full boost at 3,000rpm. The spool happens quick and boost hits very hard:biggrin:

The .70 on the compressor wheel determines the maximum boost you can run. I run a .70 A.R which is for big boost. You are running the same compressor A/R so you should be able to boost 25psi or higher

So my turbo spool around 3000-3500 rpm right?
I do not want a spool too slow.
You advice this turbo for M44?

xxxJohnBoyxxx 08-15-2010 07:01 PM

Quote:

Originally Posted by AR Black (Post 278515)
So my turbo spool around 3000-3500 rpm right?
I do not want a spool too slow.
You advice this turbo for M44?

It might spool a little lower than 3000-3500 with a .48 A/R on the exhaust. It should be real close. It's very hard to say but should be close with the big .70 compressor wheel.

John S

AR Black 08-15-2010 07:39 PM

Quote:

Originally Posted by xxxJohnBoyxxx (Post 278524)
It might spool a little lower than 3000-3500 with a .48 A/R on the exhaust. It should be real close. It's very hard to say but should be close with the big .70 compressor wheel.

John S

:wink: great
Thank you!


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