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So I've had my boat for 3 seasons now and it seams like it has developed a lifter issue on the number 7 cylinder.
Noticeable ticking at idle but goes away almost completely past 1,100 rpms, then slowly comes back over time at rpm... think its a collapsed lifter. Compression check also has that cylinder down almost 30psi vs all others.
I would like to pull the motor before it gets much worse and send it somewhere for a rebuild and possibly a slight upgrade in cam/valvetrain. Does anyone have experience with reputable shops that would tackle this for me.
It would be wonderful if it was someone local to me (Massachusetts) but seeing how I'll be pulling the motor, I can ship it anywhere really.
The Python motors seem to be a rebranded 502 MAG MPI (GEN VI) that PCM just modified slightly for CC to put in their boats... so cam/valvetrain upgrades for the 502 MPI should be compatible with the Python. Contacted Hardin-marine about this and they would not even speculate as to the compatibility. Contacted PCM (supplier of the motor to CC) and asked for any and all information regarding the 502 Python engine and they refused to provide a single bit of info. Told me to contact a local dealer.
Would've been nice to just get cam specs, then I could at least order parts.
I was told that PCM has this motor tuned very rich, so I think I can get away with a slightly more aggressive cam. Apparently, nobody will tune this motor so the stock tune must remain.
Any suggestions, information, personal experience or opinions are welcome and appreciated.
Thanks,
Shea
Noticeable ticking at idle but goes away almost completely past 1,100 rpms, then slowly comes back over time at rpm... think its a collapsed lifter. Compression check also has that cylinder down almost 30psi vs all others.
I would like to pull the motor before it gets much worse and send it somewhere for a rebuild and possibly a slight upgrade in cam/valvetrain. Does anyone have experience with reputable shops that would tackle this for me.
It would be wonderful if it was someone local to me (Massachusetts) but seeing how I'll be pulling the motor, I can ship it anywhere really.
The Python motors seem to be a rebranded 502 MAG MPI (GEN VI) that PCM just modified slightly for CC to put in their boats... so cam/valvetrain upgrades for the 502 MPI should be compatible with the Python. Contacted Hardin-marine about this and they would not even speculate as to the compatibility. Contacted PCM (supplier of the motor to CC) and asked for any and all information regarding the 502 Python engine and they refused to provide a single bit of info. Told me to contact a local dealer.
Would've been nice to just get cam specs, then I could at least order parts.
I was told that PCM has this motor tuned very rich, so I think I can get away with a slightly more aggressive cam. Apparently, nobody will tune this motor so the stock tune must remain.
Any suggestions, information, personal experience or opinions are welcome and appreciated.
Thanks,
Shea
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