dave j wrote:
[quote] Still like to know your eng temps [/quote]


Have no idea other than the fact that I can feel by hand that it's cooler than when I had it tuned a little leaner than I have now, maybe 1 point worth at idle. But it was never tuned too lean to cause any type or close to having engine damage. I have Dooley's and even the crossover pipe is cool, I can hold my hand an inch off the pipe a few inches away from the heads for quite some time and not burn. I've read where some with the Dooley pipes were melting the middle side cover piece, that is way to lean then. Even when I was miss-tuned, was never that hot to melt the plastic piece, so those who melted the cover, boy, they either were tuned way lean, or had an air leak to get that pipe so hot to melt plastic. I'm also running the 42hsr carb, much easier to tune, better separation of carb ckts, and it's the needle that effects cruise mpg's more so than the pilot ckt. of which I have optional needles I can use.. Also, the pilot screw adjustments does not really changed mpg's as compared to the stock carb. The HSR by choice of pilot jet is a fixed gas amount entering that ckt, while the pilot screw adjust the air to mix with it. Stock carb is the opposite, the air is the fixed amount, and the pilot screw adjust the amount of gas entering that ckt.