Honda thermostat

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dehler25

dehler25

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Sep 10, 2012
222
Hunter 450 Gulfport, Florida
I have an older BF 8 circa 1987 with breaker point ignition. It is having a lack of cooling issue and I need to find the thermostat. All the references show it on the top port side and I think that is for later versions. I have seen a comment that the intake manifold needs to be removed, anyone know if that is correct?
 
caguy

caguy

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Sep 22, 2006
4,004
Catalina, Luger C-27, Adventure 30 Marina del Rey
What makes you think it is the thermostat?
 
petersea

petersea

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Sep 26, 2008
566
- - Noank CT.
dehler25 said:
I have an older BF 8 circa 1987 with breaker point ignition. It is having a lack of cooling issue and I need to find the thermostat. All the references show it on the top port side and I think that is for later versions. I have seen a comment that the intake manifold needs to be removed, anyone know if that is correct?
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Assuming it is the thermostat Yes the intake manifold needs to be removed. If I remember correctly there are about 10 nuts that secure it. No need to remove the carb I left it on when I did mine all in all about a one hour job.
 
petersea

petersea

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Sep 26, 2008
566
- - Noank CT.
petersea said:
Assuming it is the thermostat Yes the intake manifold neds to be removed. If I remember correctly there are about 10 nuts that secure it. No need to revove the carb I left it on when I did mine all in all about a one hour job.
Click to expand

see the diagrm below you will need parts 2,3 ,7 and 8 (7 and 8 come as a kit when u order it) Check out boat.net for ordering and it is their diagram #5 is the intake manifold
 
dehler25

dehler25

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Sep 10, 2012
222
Hunter 450 Gulfport, Florida
I replaced the impeller which had a vane missing along with another broken one. I found what appeared to be most of the fragments. I still did not have adequate flow out the pee tube. I have thought about flushing the system, but was afraid I might set an obstruction due to the pressure. It seemed that the thermostat was the next most likely culprit, except I have not found it. The pee tube has small flow and it is very hot. The engine came used with the boat and was terribly neglected so the likelyhood of salt damage is great.
 
dehler25

dehler25

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Sep 10, 2012
222
Hunter 450 Gulfport, Florida
Thanks so much, that is one diagram I have not seen before and it looks just like what I have.
 
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