Home › Forum › Ask A Member › QD19 Overheat Question – Update › Re: Question For The OMC Experts
OK, I am assuming you had the powerhead on when you plugged the overboard cooling dump, then saw water leaking out of the triangular hole I mentioned. So, if that is the case, I think it is safe to "assume" that the exhaust relief/cooling circuit buried inside that cavity is working as designed. It can’t hurt to pull that plate off and have a look, but only if the screws will come out with no torching involved. Definitely reinstall the SS plate though, don’t leave it off.
I would hesitate to drill the cooling relief holes in that cavity above the SS plate though, that is pretty darn close to the exhaust manifold. Negative exhaust pressures could actually draw water up into the exhaust ports, crazier things have happened!
Hold off on drilling holes into the #2 cylinder water jacket until someone can confirm this is accepted practice with a bulletin or by actually finding a block with a relief hole in that area.
I think Mumbles will be able to provide some good data when he runs several of his QDs looking for a hot midsection/shift handle.