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Knee Pads are Overrated!
 
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Join Date: Apr 2016
Location: Norf TexASS
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Quote:
Originally Posted by 93097004xx View Post
Even under hard boost? I thought turbos had higher stress the NA 911s. I know SCs can last forever but they are not blown.


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Boost in these cars has no real effect on the crank and rods (or their bearings) unless you've been getting a lot of detonation, but with detonation, the piston rings and ring lands go long before the crank or rods. The crank assembly is capable of withstanding more than double the horsepower that a stock 930 has (very "overbuilt" for the original application, in other words), and last a very long time with a measly 300hp passing through them.

The 930 put more stress on the top end (pistons, valve guides, etc) than NA 911 engines, but that is primarily due to the increased heat of the boosted engine (not the boost pressure itself).

Last edited by Rawknees'Turbo; 03-13-2017 at 02:05 PM..
Old 03-13-2017, 02:02 PM
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