Heat exchanger leak

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Jakem

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I have developed a leak at the neck of me hx. It doesn't matter what cap. I have called out to have it replaced with a new one. Now would this issue cause air to get into the system as I think it would.
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jakem said:
I have developed a leak at the neck of me hx. It doesn't matter what cap. I have called out to have it replaced with a new one. Now would this issue cause air to get into the system as I think it would.
Click to expand...
you can have them repaired at your local radiator shop
 
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Jakem

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I am taking it in tomorrow. Was just curious if that would cause air in system issue
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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not enough expansion volume would cause air in the system. the expansion volume should be 6-8% of the system volume. many marine HX's rely on a puke tank because that is a cheap band-aid fix vs a proper expansion tank on the top of the HX
 
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j cat

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Jakem said:
I have developed a leak at the neck of me hx. It doesn't matter what cap. I have called out to have it replaced with a new one. Now would this issue cause air to get into the system as I think it would.
Click to expand...
FORD 302 225 hp LOOK UP the heat exchanger/coolant pump/and exhaust elbows ...
I replaced my merc 470 exhaust elbow 35 yrs ago ...had a leak ...
I fixed the water pump on the coolant system on the engine ..
 
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Jakem

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Just ran boat...little water.coming out...found impeller gasket was missing a peice and none of it looked very good...looking for mc-1 oem impeller kit with pump...any ideas of the number
 
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Jakem

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Is that correct orientation..top curled to the right?
 

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J

j cat

Petty Officer 2nd Class
Joined
Oct 13, 2015
Messages
100
Jakem said:
Is that correct orientation..top curled to the right?
Click to expand...
the impeller is clockwise !!!!!!!!!!!! correct... looks good ..but you should change it ... use a new impeller and use a silicone brake grease to put on the rubber impeller...just a coating on it ....
 
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