Amberjack01
Member
Thanks!
I'll let you know how it goes.
I'll let you know how it goes.
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gmcleer said:John and company,
I posted a few weeks ago. I had a mechanic replace the exhuast mainfolds, 6" extentions and risers plus the impeller (raw water) and the circulator pump. The boat runs at about 175 with 50 psi + of oil pressure. I replaced the t-stat and removed the riser and extention, all was clear. From the t-stat housing water appears to be flowing equally. WOT is about 4300 on the tach. I can cruise at 3400 and not overheat but the starboard riser is too hot to leave your hand on for more than a second or so. The port riser is warm but not hot. any thoughts?
Thanks,
H2ONUT said:John, I got the t-stat put back in the correct way with the right gaskets. All temps are good with me but one. The port manifold is around 120* and the elbow around 110*.
The stbd manifold is 150* and the elbow is 110* also.
The reading on the intake manifold where the t-stat bolts to is reading 160*.
I still have a lot of steam, never had it before, even 2 or 3 weeks ago when I started figuring out the original elbow getting hot issue...
The temp on the t-stat housing at the sender for the gauge is 160* which is what is showing on the dash. The top of the t-stat housing is 90*.
River temp is 72*.
Am I just paranoid? :smt017 :smt101
T-stat is a 140* stat.
H2ONUT said:I took all my readings after the temp gauge stopped moving.
gmcleer said:Thanks for the replies.
I don't want to leave out the t-stat yet. I will pick up an IR gun ASAP. How long should I idle the boat before taking a reading?
Thanks,
H2ONUT said:Steam is after a hard run, or just after coming off cruising speed. It is when the temp gauge spikes to 180 or 190 and then when the temp gauge drops, the steam goes away.
There is a noticible difference in the way the two manifolds feel.
Yes, the motor is running and at 1500 rpm while taking the readings.
H2ONUT said:John, in the diagrams offered on the Mercury site, I have the standard cooling design I (one).
I will take pics this weekend and e-mail them too you.
Thanks again so much for your time... :wink:
PS... In the diagrams, there is a diagram for standard cooling w/ alpha. I have an alpha drive. Is it possible I have the wrong stat housing?
H2ONUT said:Well, I'm still overheating.
I swapped hoses at the dock, checked all the hoses for flow and they looked good.
Took her out for a ride and the temps climb.
I'm just gonna bite the bullet and replace the riser elbows, and haul her out and look at the impeller again. Might just buy a whole new kit for that also...
If I still have issues, I AM LOST!!!!!!