Never seen a lake with cold and hot water.I believe what everyone is saying is it could have had a small leak on one side. A small leak would not necessarily hydro lock a motor.It would depend on exactly where it is.As far as that bank running hotter it could happen due to jetting beings you should run staggered jetting in a holley on a single plane intake.Maybe he is running staggered jetting.Do you know?No!!
If you would have read above in reply #31 he says he no longer even has a steam problem,just a performance problem.

Time to start a new thread!!

Ya the steam problem i think it was the water coming out of the water tower was around 45 (bc i was run n on earmuffs) and the lake was about 55 and i never saw steam and temp was 150ish now its jet performance issue. Anyone think what i should set time at its been 34 36 38 from everyone on here. Also 5500 5600 rpm is that to much to run. Hope to get right prop and get some speed. THANKS

Merc calls for 34 @ 3200 rpm on a stock hp 500 :ernaehrung004:

Try them all and see which one works best.I have high performance big block chevy books that say 38 and I have mercury manuals that say 36.Remember this is total advance.Do you know what main jets you have in that holley.Should be 82-84's. 55-5600 rpms should be fine as long as you don't run it there all day.Short periods only!You will need to see how many rpm's it will turn at wide open throttle to determine the prop you will need.Rule of thumb is for every 1 inch of pitch you increase it slows the engine 200 rpm.what drive do you have?

X 2 that is A safe number to run at, [IMO] Or just set the base timing to specs at idle normaly 8-10 [BTDC] You might find the numbers on the top of the stock flame arrestor, And just let the IGN module do it's job, Then once set Just use the timing light and rev the engine up and watch how Hi It advances on It's own and see if that is good enough for you.
I believe your idle should be at [740] rpms Good luck with it in any way you end up doing it.:party-smiley-004:

First off i wanted to say THANK YOU to everyone that came in on this thread. I finally got the boat back n the water. After a new temp gauge and a few tweeks on the carb it ran great. I got everything i was hope n for. I ran 75.8 on gps at 5200rpm with 23 pitch not sure brand prop. VERY HAPPY:evilb:. So i just wanted to up date everyone that help and chimed in so THANK YOU ALL VERY VERY MUCH :drink: ADAM RINKER 236 75.8 (GPS) "BURNIN BRIDGES"

Congrats Adam!! That is a fast-a## Rinker!!

What gear ratio do you have in your drive? If it's 1.5 that means you're running zero prop slip (with 23 pitch at 5200 rpm) - doesn't sound right.