Modifying a marine crank for automotive application

Discussion of the Marine / Industrial Hemis.

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MAW
Posts: 21
Joined: Thu Sep 01, 2005 12:59 pm

Modifying a marine crank for automotive application

Postby MAW » Fri Aug 18, 2006 9:31 am

Hi all,

Can anyone give me a ballpark estimate for having a marine 331 crank welded/machined to work in an automotive application? Or is it better to sell it off and just buy the proper core?

This was a reverse rotation engine so do the modifications also include the rear main seal surfaces?

Thanks, Mark

Bailiesdad
Posts: 438
Joined: Sat Dec 01, 2001 6:00 pm
Location: Maryland

Re: Modifying a marine crank for automotive application

Postby Bailiesdad » Fri Aug 18, 2006 10:52 am

MAW wrote:Hi all,

Can anyone give me a ballpark estimate for having a marine 331 crank welded/machined to work in an automotive application? Or is it better to sell it off and just buy the proper core?

This was a reverse rotation engine so do the modifications also include the rear main seal surfaces?

Thanks, Mark


This engine was labeled LH? If so,

Clean & Mag 40, 150 to weld the camshaft gear step, 110 to reweld the rear main surface and regrind, 75-90 to grind remainder, plug the snout hole with solid plug, and it is back to normal.

Used 331-354 cranks go for 150-250, ready to use.

MAW
Posts: 21
Joined: Thu Sep 01, 2005 12:59 pm

Postby MAW » Fri Aug 18, 2006 11:44 am

Thanks for the info. Guess I'll put it on ebay or tie a rope on it and use it as an anchor for the ski boat :wink: .

Cheers, Mark

mart
Posts: 536
Joined: Tue Mar 22, 2005 2:06 pm

Postby mart » Mon Aug 21, 2006 4:34 pm

MAW wrote:Thanks for the info. Guess I'll put it on ebay or tie a rope on it and use it as an anchor for the ski boat :wink: .
Cheers, Mark


Stick it on ebay. Someone out their probably needs a marine crank for their boat. The oddball marine parts to a car guy who doesn't don't need em and/or can't use 'em, maybe just so much junk....but try and find some of that same marine stuff if you have a boat and do need it.
mart
==========================

Bailiesdad
Posts: 438
Joined: Sat Dec 01, 2001 6:00 pm
Location: Maryland

Postby Bailiesdad » Sun Sep 17, 2006 8:19 am

"but try and find some of that same marine stuff if you have a boat and do need it. "

That is simple. I just walk out to the shed and grab the parts. Out of my stash.... :wink:


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