View Single Post
  #174 (permalink)  
Old 06-14-2008, 04:42 AM
Maurice Butler's Avatar
Maurice Butler Maurice Butler is offline
CC Member
Visit my Photo Gallery

 
Join Date: Apr 2008
Location: Temuka, NZ
Cobra Make, Engine: Scratch build, with help
Posts: 116
Not Ranked     
Default

Quote:
Originally Posted by wanab5150 View Post
Good for you....I think you'll be happy.

I wish I could find someone with the tuning tips. I read this on Gear6's site where he said it was stupid to run a vacuum pump. He's the only person that I am aware of that said HE could tune up MORE VACUUM.

Other than uping the idle, what tuning can you do to the Roush. If I put a 500 cfm Holly on it the vacuum would go up due to the higher volicity through a smaller hole. I think this is called Burnuli's principal.....Something like that anyway. With the 750 or 770 have you heard anyone state how they achieve more vacuum from a tune? ANYONE?
Vegasmike? You've talked to him, how does he do it? tom
by changing the timing - with a british car - the mgb 1800cc 4pot - the timing was set by adjusting for max vacuum at 800rpm then retard until the vacuum dropped 1/4" from memory - last did it 20+ years ago

found this when I when searching - google is your friend

http://www.centuryperformance.com/tu...e-spg-148.html

has good information using vacuum gauge for tuning
__________________
Maurice
researching for scratch build

Last edited by Maurice Butler; 06-14-2008 at 05:01 AM.. Reason: added web link
Reply With Quote