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08-09-2015
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#1 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,180
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Back to normal
Hard to believe this combo lost power:
Inside of Frankenplenum:   Stock  Siamese Runner....  
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 08-09-2015 at 06:02 PM. |
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08-09-2015
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#2 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,180
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Re: Back to normal
Back to a ported plenum and IHs with sinuses
 
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-09-2015
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#3 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,180
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Re: Back to normal
Heads are still siamesed 1" down the runner
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-09-2015
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#4 |
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Join Date: Jul 2009
Location: Texas
Posts: 790
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Re: Back to normal
My guess would be the transition into the runner if you have a large fillet or radius there it would help alot. Also how much tuning did you try with the modded plenum??
Dave Hetrick |
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08-09-2015
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#5 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,180
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Re: Back to normal
I don't think tuning could have gotten me anywhere but back to where I was before. The runners inlet radius was much smoother than stock
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-09-2015
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#6 | |
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Join Date: Jul 2009
Location: Texas
Posts: 790
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Re: Back to normal
I was referring to the transition just spit balling
 Dave Hetrick Quote:
Last edited by mgbrv8; 08-09-2015 at 06:50 PM. |
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