TOPIC: 50hp crankcase

50hp crankcase 13 years 6 months ago #30616

propnut
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hi, i am splitting a 1967 50 hp crankcase. when i removed the crankcase cover the crankshaft came out with it and i am having trouble separating them. i did remove the main bearing screw and i don't see anything else that could be holding it. any suggestions? also, is there a special type of piston ring compressor used on these?
thanks

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Re: 50hp crankcase 13 years 6 months ago #30617

professor Offline Gold Boarder Posts: 758 Karma: 87 Thank you received: 1	You removed all the bolts ( 3 of them )for the reed cages / main bearings ?? Special ring compressors are used, sometimes available on E-BAY Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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Re:50hp crankcase 13 years 6 months ago #30620

propnut Offline Senior Boarder Posts: 199 Karma: 2 Thank you received: 0	got it, i had only removed one of the screws and there are three of them. thanks Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
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Re:50hp crankcase 13 years 6 months ago #30647

Dr_Frankenmerc
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There are special Merc designed ring compressors.
I'm pretty sure the smaller motors - like your 44 ci would use a smaller set of ring compressors than the medium sized 76-90ci 4&6 cylinder and the larger set for the 99ci like a 1500, etc.
I believe there was a helpful post here not too long ago that folks shared alternative ideas when the Merc compressors aren't available.
Maybe someone can track down that post and related replies??
Thom