2.4 Mercury Running Hot

[tony1204au]

I ve just put together a 175hp 2.4 Mercury 1988.
Runs sweet but its getting hot at idle.. New pump, new thermostats, poppet serviced.
I think I messed up with the adapter plate... Its a 2 piece plate, but on the top half, I used a later type with the mount for the later model cowls...
It seems to be blowing way too much water out of the exhaust reliefs and not cooling the top 2 cylinders properly...

Wanted to see what you guys that have had more experience with these things think before i pulled the powerhead again...
Is this just a case of mismatched adapter halves?? Or is my problem elsewhwere??

[Go Time]

I thnk your on the right track. can't mix the old style botom and new style top of the two piece adapter. really need to have the 2 pc adapter and can all match. you can drill & tap the old style top adapter plate to mount the bracket for the late model cowls.

[XstreamVking]

Check your low speed timing setting. They get hot at idle if it is not correct. Just my 2 cts.....

[rock]

You can definitely NOT mix the plates. We accidently did it a couple years ago and had the same issues you are having. Massive amounts of water coming out of the exhasut relief. Good luck.

Rock

[tony1204au]

Thanks for the replies... I though that would of been the issue..
Thats exactly what I had, heaps of water gushing out of those reliefs... I guess I gotta get her back under the hoist....

[tony1204au]

Swapped out that top half of adapter, and all is well now....

[rock]

I love a happy ending