Anyone know where I should set my ring gap on my new motor? Stock bottom end, and it will be seeing a 100-125 shot occasionally. I have heard go a little bigger than what the factory reccomends for nitrous/FI applications, but not sure if it matters that much with such a small shot.

 

.020-.024" on top ring and .022-.024" for the bottom ring

 

125 isn't that small of a shot, and it does matter if you want the package live at all. Figure .004 gap for every inch of bore, +.002 if you're gonna squeeze. So 4 in. bore, .004, +.002 x 4.0 = .024 gap. See how easy that was? Just a rule of thumb though.

 

I do agree that it never hurts to gap the rings wider for nitrous.

Any here have direct experience and success with adjusting the ring gap to the stock LT1 piston rings?

Guys, just remember you have to consider the ring material and size and the piston design so we should be careful on the gaps we quote. I think this is a stock Mahle LT1 piston and stock GM replacement Mahle ring set that comes pre-gapped to factory spec. Mahle and GM put the 2nd ring gap wider than the top ring (something like .016" top, .020" 2nd) so if you do widen the gap make sure to make the 2nd ring gap wider than the 1st ring.

Karl

 

did the magazine tell you 125 is small shot?

125 shot can blow **** up and Does all the time.... remember that 125 shot is also giving 250 pound feet of TQ at a VERY low rpm...

Respect the giggle gas

 

.032 on top and .026 on the bottom. Thats .032 if you bore the motor and use different pistons. This will also give you room to shoot a bigger shot.