This is topic e-85 13:1 or 14:1 compression in forum Tech Talk at Northern California Ford Owners  .


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Posted by 79 cobra (Member # 10137) on :
 
going e-85 what the most compression you can run with nitrous with out detonating wanna run 14:1 with a 150 shot direct port will I run into detonation or should I go 13:1 or 13:5:1


thanks,
brett

[ 2013-08-04, 10:35 AM: Message edited by: 79 cobra ]
 
Posted by 5.0 LsX (Member # 10017) on :
 
wouldn't go much past 13:1, the gains start to diminish past that point. as long as your tune is spot on, you wont have to worry about detonation
 
Posted by 79 cobra (Member # 10137) on :
 
ordered my pistons from je there dome +10cc so with my 72cc heads puts me at 11;7 but if I mill my heads down to 60cc I will be at 13;4 or should mill them down to 58cc and be at 14;1 kinda lost gonna be sprayin just a 150 shot any help will be greatly appreciated


thanks,
brett

[ 2013-08-04, 09:15 AM: Message edited by: 79 cobra ]
 
Posted by warhorse58gt (Member # 7702) on :
 
You could do 14:1. How fast are you tryig to go. Because in the realm of 14:1 and 434 cubes you looking at high 800hp on motor alone.
 
Posted by 79 cobra (Member # 10137) on :
 
going on a 408 stroker looking for high 500 low 600 all motor and on bottle around 800 to 900 the block is a69 so it should hold up hopfully

[ 2013-08-04, 09:54 AM: Message edited by: 79 cobra ]
 
Posted by Cafoxbody (Member # 11267) on :
 
quote:
Originally posted by 79 cobra:
going on a 408 stroker looking for high 500 low 600 all motor and on bottle around 800 to 900 the block is a69 so it should hold up hopfully
Good luck with that... a 351 block will snap just as easy as a 302 block with that sort of power.
 




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