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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


 
 
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Old 10-14-2010, 01:42 PM   #27
codyace
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Quote:
Originally Posted by Blacklines86 View Post
Assuming one is already following Codyaces recipe for a 400+ HP SR, I have a couple head questions.

What advantages are there to upgrading to aftermarket valves, and valve guides besides extra strength? Can better flow can be expected from +1mm valves? Or are valve upgrades unnecessary at the 400-450 hp range?
IMO It's really not needed and simply an unnessecery step if you're looking at anything this side of the 450-500 range. The stock valves are known to work, and there is limited to no proof of a larger valve (1mm) making any significant difference.

Race motor? Maybe. Super big power? Maybe. But truthfully saying, most of what we are driving/building/owning are street derieved cars. To me (and albiet maybe simple minded), you can't 'beat oem' when it comes to street based setups. Upgrade what you need to, and leave the rest.
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