Originally Posted by
Franchize04
Hey ron or anyone with experience
My b5 lost compression after a gallon of fuel but it was my fault. I was running the motor below 200 degrees to tame it. When you run a motor cold the sleeve doesn't expand, the piston or sleeve just wears, correct? I was wondering if a pinch could restore it or should I just get another p/s. If I wore my piston down then it's probably best to replace the set. I'll probably just let Ray A decide what's best.
Are you sure that you are not confusing loss of metal pinch with loss of compression? The reason I ask is that even running a little rich it is highly unusual for a piston/sleeve to wear out in a gallon of fuel... If the compression is indeed shot I'd take a look at some other things like how you are breaking it in, possibly the fuel that you are using, make sure that you have not sucked any dirt and also double check your tune to make sure that you are not just running super lean on the bottom and fat on the top (which will wear out a p/s but still keep the overall temps low so it looks like you are running rich). Out of all of these I would lean towards the last as the more likely culprit. In any case, send it down to Ray and have him put a pinch on it. Once you get it back follow my tuning guide and you should be good to go. You should be getting 6+ gallons out of a p/s on a properly tuned engine.
Regards,
Ron