V-4 looper piston\cylinder damage.

[OutragousBob]

From help I have recieved on this site I have solved the issue of water intrusion into the lower port cylinder on my 1995 Ocean Pro. I replaced the power head base gasket and got lucky that neither the power head or exhaust housing were very corroded. My concern now is that the cylinder that suffered from water intrusion has scoring above and below the exhaust port and looking from the bottom of the power head I could see that the piston is scuffed in this location also. I assume it is damaged in this location from water entering the exhaust port and washing lube oil away. It is all together now and runs fine. The cylinder with the damage has 120 psi with 125 in the other three. Given that the damaged cylinder only shows damage around the exhaust port (approx. 25% of the cylinder)do you think it will hurt it further to run it as is? I fear that it may cause further damage if I run it but if I have to rebuild to fix this issue my boating season will be over. Any advice is appreciated.

Bob.

 

[Bob_VT]

Re: V-4 looper piston\cylinder damage.

Compression is great. I would run it if it was mine and check it on occasion to see if it gets bigger.

 

[phillnjack2]

Re: V-4 looper piston\cylinder damage.

its realy a case of repair it now properly (strip down and new piston and hone the bore or re-bore it)

or use it and throw it away when the engine goes bang and chucks a rod through the block.

personaly i think i would re-build it now and keep a good engine for many years.
be a shame to chuck a nice engine on the scrap heap.



just my opinion


phill.....................

 

[daselbee]

Re: V-4 looper piston\cylinder damage.

Run it. It will be fine.

 

[boobie]

Re: V-4 looper piston\cylinder damage.

I've seen a lot of mtrs run with the prob you have and run good, But the decision is yours.

 

[OutragousBob]

Re: V-4 looper piston\cylinder damage.

I think I'll run it for a bit and see if the compression gets worse. Most of my run time is at trolling speeds so hopefully I'll see a loss of compression before a rod lets go.

Thanks for the input,
Bob.