killed dads boat part 2

[tpsball]

ok, i overheated dads boat, 1980 evinrude 35hp, replaced the water pump and it wont start, looks like water on the plugs. did a compression test on top cylinder and got about 45 but it wouldnt hold in the guage, as soon as i stopped cranking the guage it would go to zero. The bottom cylinder reads about 50 and stays in the guage when you stop. I did take all the bolts out and removed what i think is the head, for what reason i don't know, just trying to find something wrong and im sure i hurt it more... thanks in advance!

 

[lowkee]

Re: killed dads boat part 2

You already started a thread about this.. continue that one instead of making a neew thread about the same problem.

 

[a70eliminator]

Re: killed dads boat part 2

If I recall correctly you were removing the head on the low compression side in order to verify a blown head gasket caused by the overheat, so how does it look?

 

[tpsball]

Re: killed dads boat part 2

it's one head gasket for both cylinders isn't it?

 

[HybridMX6]

Re: killed dads boat part 2

Yep, 1 head, so how did it look?

 

[tpsball]

Re: killed dads boat part 2

well, old and hard and really thick on the inner parts. I am going to change and see what happens.

 

[HybridMX6]

Re: killed dads boat part 2

We were referring more to how do the cylinders look, not so much the head gasket. They should be smooth with no grooves or gouges.

 

[coolguy147]

Re: killed dads boat part 2

reason y a head gasket would blow. would be cause of a overheat or a improper installation of that one i believe

 

[tpsball]

Re: killed dads boat part 2

ok, i got to the head gasket and it was for sure blown, huge hole blown right through. The cylinders looked and feel real smooth, no gouging or metal slivers what so ever. I got a new head gasket and water cover gasket and am going to replace today. Also, the thermostat was really messed up, stuck and looks bad, so i am just going to keep it out.

 

[tpsball]

Re: killed dads boat part 2

Also, I can't find the torque for the head bolts or the water cover? I have a manual coming but i;m so close now. Thanks

 

[tpsball]

Re: killed dads boat part 2

I found the torque for the head bolts, 18 ft. lbs. but not the water cover. I put it back together and it fired and ran but water was coming out between the head and the water cover., so i tightened the bolts and broke one off in the head! so, i drilled it out and backed it out with an ez out. I had the bolts really tight and it was still leaking water around the spark plugs. any suggestions? thanks ps, im almost there!!

 

[coolguy147]

Re: killed dads boat part 2

make sure u put in a t stat it needs a new one


not related to spark plug problem

 

[tpsball]

Re: killed dads boat part 2

a guy at the boat place said just leave it out

 

[krogie]

Re: killed dads boat part 2

i would still replace the t-stat , its not a good idea to just take it out