what do i do with the extra opening after removing heat exchange for the fmoc? use a cap or what

 

I assume you mean the extra water nipple coming out of the block,below the oil filter?

I used to just take a hacksaw and slice the tee back behind the rear facing outlet,making it into just a single pipe coming straight out the engine block.Despite not having a retaining bulge for the hoseclamp,I never had any leakage problems running it that way for years.

 

I used block off caps when I went FMOC. When one of those blew the end off, I replaced it with a short piece of hose, with a stick clamped in the end. I prolly need to look for something else to block the hose with, but the stick has outlived the rubber cap, and was all that could be found late at night, on the side of the road..........

 

thanx