[Kerry]

Once again I fail to comprehend how a piston ring can expand 10 thousands or more to close the ring gap but not expand the width 10 thousands and lock up in the ring land. I know everyone says that. Even engineer's at Wesco recommended 35 thou to me on the last build.

How can it grow length wise but no other way. Clearance on a ring land s like 2 thou maybe at most. Last I checked when u heat metal it grows all directions not just one.

I think its an excuse from manufacture's when someone has a piston fail to avoid responsibility.

Stock ring gap on the lt4 is same as lt1 at around 11 thou and is considered wore out at 15

I have put over 60000 miles on stock lt1 pistons with meth at 11 thou and never ever had a ring butt. Ever. had a rod size on crank. so have a lot of people with out meth. Bent and broke stock rod at around 1000 plus crank running e85. But never had a ring butt, Period that's experience. and facts. 1000s of hits as well. Short ones but thousands like mainly 50 to 120 or so. I go to old mexico a lot lol

And also on the broke rod. I noticed that one side of the piston pin was pulled out broke. So if the Wesco piston failed then that would break the rod for sure. then debris could have bent the other rod. but not likely, most likely the rod bent from so much pressure broke one side of the pin boss and catastrophe ensued lol.


Car was making about 800 wheel. 13% drive train loss and about 100 to spin the blower. I say 700 is about the limit on stock lt1 rods. pistons break ring land on random. Even stock motors have broke ring lands. rack proven motor sports quote from Fran

Further more if a ring does close the gap, especially enough to break a ring land then u are going to have a streaked up cylinder period again. O i did break a ring land once btw no damage to the cylinder. Had a sever mutable back fires on a dyno pull and i think thats what did it in my case. No fresh air coming into the dyno room and it will not run on exhaust fumes.