Carb 502 mercruser low compression
02-26-2023, 07:51 AM
#21
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Last edited by SB; 02-26-2023 at 07:56 AM.
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02-26-2023, 08:23 PM
#22
yup your right noticed the tabes were missing when I pulled the valve covers just figured someone trimed them never put the two together till you mentioned it haha
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03-02-2023, 04:34 PM
#26
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I'm not an engine builder but I will answer your request for "anyone".
I have a couple questions out of curiosity. Do you know if all 502's came with roller rockers? Do you also have roller lifters?
As for the pushrod question, if you have roller lifters, could the water in the oil possibly have gummed up the roller and perhaps rounded off the cam lobe till the pushrod came loose? I suppose you could be lucky and rocker could have just come loose.
If the vertical scratch is as slight as you say, then perhaps a simple hone will take care of it.
Good luck with your project.
I have a couple questions out of curiosity. Do you know if all 502's came with roller rockers? Do you also have roller lifters?
As for the pushrod question, if you have roller lifters, could the water in the oil possibly have gummed up the roller and perhaps rounded off the cam lobe till the pushrod came loose? I suppose you could be lucky and rocker could have just come loose.
If the vertical scratch is as slight as you say, then perhaps a simple hone will take care of it.
Good luck with your project.
03-02-2023, 07:11 PM
#27
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Blue 502’s came with roller rockers.
Black 502’s did not.
Black 502’s did not.
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PQ290Enticer (03-09-2023), Velocity941 (03-10-2023)
03-02-2023, 07:22 PM
#28
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Gimme Fuel (03-03-2023), sutphen 30 (03-02-2023)
03-03-2023, 01:56 PM
#29
I'm not an engine builder but I will answer your request for "anyone".I have a couple questions out of curiosity. Do you know if all 502's came with roller rockers? Do you also have roller lifters?As for the pushrod question, if you have roller lifters, could the water in the oil possibly have gummed up the roller and perhaps rounded off the cam lobe till the pushrod came loose? I suppose you could be lucky and rocker could have just come loose.If the vertical scratch is as slight as you say, then perhaps a simple hone will take care of it.Good luck with your project.
03-03-2023, 01:58 PM
#30
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PQ290Enticer (03-03-2023)
