I've seen a few of these reports on the forums here lately. Whats the deal? How many of you have had them let go? Toying around with the idea of an 11:1 piston being one of my mods in the future, but not if its gonna be breaking on me? [img]i/expressions/face-icon-small-confused.gif[/img]

 

Just remember the higher the comp ratio the higher octane gas you must use.
A lot of high comp piston failures are from using low octane fuel and
getting detonation on the compression stroke, which blows the top out of the piston.

 

I have heard about this also.............and what skeeeeers the crap outta me is all of the cases I have heard of, have IDENTICAL pistons as mine!!!!
102mm 11:1
but the only two that I have heard of sound like they are running fuel with too low of an octane rating
I run 93/c12
50:50
and I'm going to start with a little nitro very soon

I guess if this piston gives then that will just be an excuse to go bigger........[img]i/expressions/face-icon-small-happy.gif[/img]

 

I have that piston and run 91 in it. I tried 91 with C12 mix this last weekend and all I really noticed is that my six pack rack got a tan with the mix. I did put a new plug in so I can compare the two. The guy that did the work on my motor said is was not needed, but I could give it a try just to see if it made a difference. I don't think it made any big difference. JMO