The Stovebolt Site Forums The Shop Area Engine Shop Your advice

I have a 235 engine with R-45 sparkplugs in it..
Is this the right pulg for it?..What else should
I use if it isn't..

I am not sure what the manuals call for, but that is a fairly hot (heat range) plug. Sometimes it helps to have a hotter plug to keep from oil soaking and fouling if its a used engine. If your engine runs fine with no harsh pinging, don't worry about them. If it is pinging under a hard load, try a cooler heat range, R44, R43.... Chances are, these are just right for it. Joe

i run a ac - 43 plug in my 235

it does not have a radio, and you gather a little more attention when you drive by other vehicles

HEY JD: I am running 45's in my 48 and it runs fine. DAVE