stock manifolds

ZRS90sc

Registered User
I was wonderin, is the "lip" at the end of the stock exhaust manifolds the most restrictive part, and if so has anybody taken a die grinder and gone ape **** on it?
 
Scott Long said:
yes and yes
Wynn tbird88 has some pictures i didn mine real seat of the pants hp , I used a motorcycle ridge reamer to get the lip off then it was carbide bit and grind grind grind and finish with a dingleberry hone for a motorcycle .
 
92scbird said:
how about grinding the insides of the ports? would that do anything or just be a waste of time?
not much you can do I used a small ball hone in the ports of manifolds but that only cleaned up some casting flange and rough surfaces.
 
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