porting the headers and y pipe - Defender Source
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Old October 18th, 2009, 11:17 PM
cdb
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Clark Bowen
1969 Series 2a/OM617 Bugeye 88"
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Join Date: Jun 2006
Location: Oregon, USA
Posts: 775
porting the headers and y pipe

I had to remove my y pipe for some crack welding and noticed that where it connects to the headers the pipes have a narrow internal figure 8 shape.
It looks quite pinched in the middle so I'm wondering if grinding out and maybe polishing the middle part of the 8 would improve performance significantly. In other words: Is it worth the time?

I'm running a 4.6, with an Isky low-medium range cam and I think this change would only benefit the higher RPMs - right?

Clark
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