JackinMichigan
Well Known Member
I want to knock a few degrees of my #6 cylinder head temps, and I've heard tell of a quick-and-dirty plenum modification called the 'washer trick' which apparently entails fitting a flat washer on the back side of the plenum to space it out away from the cylinder head.
Looking at and all around my #6 cylinder I'm not seeing a place where that can be done. The #5 cylinder has a handy plenum attachment screw right on the back surface, but I'm finding no such screw on the #6 cylinder.
I've already constructed a plenum bypass duct for the #5 cylinder, which I just completed yesterday and I'll find out this weekend how well it works, and I want to make a quick mod to the #6 cylinder while I still have everything torn apart. If I can just knock 10 degrees off it I will call it good.
Looking at and all around my #6 cylinder I'm not seeing a place where that can be done. The #5 cylinder has a handy plenum attachment screw right on the back surface, but I'm finding no such screw on the #6 cylinder.
I've already constructed a plenum bypass duct for the #5 cylinder, which I just completed yesterday and I'll find out this weekend how well it works, and I want to make a quick mod to the #6 cylinder while I still have everything torn apart. If I can just knock 10 degrees off it I will call it good.