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S480 - how much boost is ok????

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Old 03-07-2009, 09:25 PM
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Default S480 - how much boost is ok????
So I have a S480 in a compound twins setup w/ V-clamp. 62/14 on top.

I'm seeing 30psi from the bottom turbo and 60psi overall. How much is optimal to stay within the effeciency range of the s480? 35psi? 40psi? what is the max?

Thanks!
 
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Old 03-07-2009, 09:32 PM
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id say right around 0-40 psi


reallly dont know bud sorry
 
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Old 03-07-2009, 09:44 PM
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geeezus. .

wondering if someone has a map or some expertise.
 
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Old 03-08-2009, 12:59 AM
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Originally Posted by Camotanker
geeezus. .

wondering if someone has a map or some expertise.
I ahve a map to the shop.

No one has maps for these things. It seems that 32-34 psi is about max before you start seeing drive pressure issues anyway.

Are you going bigger on the secondary? Something like a 64/71-14?


Dave
 
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Old 03-08-2009, 12:02 PM
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for now i'm not. i want to see what is capable with what i got....


someone has to know what these s480's should be running at for sure.
 
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Old 03-09-2009, 11:26 PM
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Originally Posted by Camotanker
for now i'm not. i want to see what is capable with what i got....


someone has to know what these s480's should be running at for sure.
What do you think you are capable of putting down as of right now?
 
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Old 03-10-2009, 01:41 AM
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Call Nate at MPI he builds 62/s480 twins right?
 
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Old 03-10-2009, 12:03 PM
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Heres your boost map

 
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Old 03-10-2009, 09:51 PM
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Good job Red.
 
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Old 03-11-2009, 12:20 PM
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thanks brah!

---AutoMerged DoublePost---

Originally Posted by Red_Rattler
Heres your boost map



Any chance you have a map without the "race cover"?

My goal is to figure out what to set my overall boost of the bottom turbo at. Is 45psi safe? Is 50psi safe? Where am I going to get the biggest bang for psi?

Thanks again!
 
Last edited by Camotanker; 03-11-2009 at 12:20 PM. Reason: Automerged Doublepost
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