Aluminum water jacket mod for more flow

[properchopper]

Wasn't getting hardly any flow out of the aluminum water jacket on my motor, couldn't figure out why. Upon inspection, I found that, because I cranked the fittings down REAL tight to avoid those pesky, boat-filling leaks, [and probably over-compressed the rubber seals] the bottom of the fittings were sitting totally flush on the motor & restricting flow. The Cure : carefully dremeled, with a thin cut-off wheel some "teensy" notches on the threaded ends. Re-installed with some blue locktite for sealing, & no more restrictions.

[Steven Vaccaro]

I will have the machinist look into this problem. Sorry about that Tony.

[properchopper]

re :

No prob, Steven. I was so concerned about leakage that it's likely that I screwed the fittings in too far/deep. Maybe on the next run the recesses for the fittings could be a little shallower; just enough to let the fittings flush up to the jacket curvature. In any event, my cure fixed the one jacket experiencing the situation. Overall, you should be commended for generating a special part like this for us boaties !