Nitrous Ring Gap ??

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
Grumpy.....I called speed pro, they said to gap rings for 500 ish shot(maybe more in future) on bbc to .007" gap on top and second ring.

I've heard mixed reviews on line, what are your thoughts on recommendation? Thx


.007 ?
you do realize thats .007 times the bore diameter right?

example if its a 4.25" bore its 4.25 x.007=.030 MINIMUM RING END GAP

I think that's absurdly too tight for a 500 hp shot of nitrous on the ring gap.

Id suggest something closer to .0095 per inch of bore diameter.

Id at least call and talk to several ring manufactures and nitrous kit suppliers and get their thoughts

info you need
http://garage.grumpysperformance.co...ng-and-basic-piston-ring-info-youll-need.509/
 
That sounds about right, that's 0.040 for the ring gap. 500 shot of nitrous is a lot of nitrous!
 
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