ZR-1 Net Registry Forums - View Single Post - A tuning tale: BLMs say lean, plugs say rich

XfireZ51 · 11-12-2018

Hans,

No sealer used on gaskets. I know Marc installs them dry. The wet spots are condensation. Its indicative of air leakage, and the worst of it is right around that #2 cylinder. Much less on left side of motor. I think the gaskets are FlatOut plenums. Frankly, I never liked their stuff. I just ordered a set from Jerry along w IH gaskets. The plenum bolts were properly torqued but pretty clear that plenum was not sealing against gasket. Interestingly, motor idled well and ran pretty well. Without a datalog and looking at the plugs, someone would have left it alone.

11-12-2018	#16
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: A tuning tale: BLMs say lean, plugs say rich Hans, No sealer used on gaskets. I know Marc installs them dry. The wet spots are condensation. Its indicative of air leakage, and the worst of it is right around that #2 cylinder. Much less on left side of motor. I think the gaskets are FlatOut plenums. Frankly, I never liked their stuff. I just ordered a set from Jerry along w IH gaskets. The plenum bolts were properly torqued but pretty clear that plenum was not sealing against gasket. Interestingly, motor idled well and ran pretty well. Without a datalog and looking at the plugs, someone would have left it alone. Last edited by XfireZ51; 11-12-2018 at 11:09 AM.