50hp compression

[CU2NITE]

I'm thinking of buying this motor from a friend. I checked the compression 125 125 122 105. The 105 has me concerned. Any suggestions?

 

[JB]

Re: 50hp compression

That fourth cylinder is out of spec, CU2N. The most commonly quoted spec is a 10%-15% spread and you have a 20% spread.<br /><br />That could be caused by something as simple as carbon buildup or as awful as a scored cylinder.<br /><br />You didn't mention the year of the engine or the price you are considering.<br /><br />There would be risk in buying the engine. You have to decide if it is worth the price based on age and risk.<br /><br />Good luck.

 

[KCLOST]

Re: 50hp compression

Which cylinder is reading the 105psi?<br /><br />Did you run the engine prior to checking the compression.. Ensuring fuel/oil got to each cylinder prior to testing may make a difference...<br /><br />I heard of a guy having a 25psi increase after warming it up...<br /><br />But I'd be a little skiddish...<br />Good luck and let us know...

 

[CU2NITE]

Re: 50hp compression

Too scared to buy thanks for the advice. Sounds like a money pit to me!!<br />CU<br /><br />--------------------<br />RUNNING THE MOTOR WHILE LISTENING TO THE HORN WILL MAKE YOU MORN!!