Originally Posted by
gnatsum69
Hey there i'm running %20 nitro and an os #8 does that seem okay. with the head shim is it okay to put 2 of the glow plug gaskets under 1 plug? to do the same thing as the head shim?
No, don't use two plug gaskets. Try a different brand of plug, maybe OD's. I have heard rumblings that OS might have joined in on the cheaper element bandwagon.