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GtWtNorth


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Location: https://t.me/pump_upp
Joined: Nov 16, 2008
Points: 264

Cracked aluminum crankcase repair options?
Original Message   Nov 21, 2012 9:50 pm
I picked up a nice clean 3000 watt generator from CL with a small crack in the bottom of the crankcase that allows the oil to drain out slowly (fell off the back of a pickup). Any one have any suggestions/experience for repairs other than welding? I'm hoping maybe Devcon, JB weld or some metal epoxy?
The motor is a clone, Lifan 168F2 196 cc and parts seem to be quite rare. The manufacturer will ship a replacement crankcase for $62.00 + transport, which is probably close to what I would pay to have it welded.
Thanks

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Bill_H


Location: Maine
Joined: Jan 12, 2008
Points: 354

Re: Cracked aluminum crankcase repair options?
Reply #23   Nov 30, 2012 9:28 pm
I would just Alumiweld it. Should be a lot stronger.

Who the hell let all the morning people run things?
GtWtNorth


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Re: Cracked aluminum crankcase repair options?
Reply #24   Nov 30, 2012 9:44 pm
mkd55, - I may still fill those cavities for the extra support.

Bill_H, I looked at the Alumiweld for a long time but the feedback I've seen doesn't give me a warm feeling. Plus I only have a propane torch so it would take a while to heat such a large mass, if it was possible. Plus I am too lazy to strip it right down to the casting so I'd be worried about how the heat would affect the other components, bearings & gaskets.


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niper99


Location: London Ont
Joined: Dec 2, 2007
Points: 354

Re: Cracked aluminum crankcase repair options?
Reply #25   Dec 2, 2012 1:56 am
jtclays wrote:
Niper, Not to be rude, but would you be able to braze this for a customer for less than the $62 crankcase replacement?



l would agree money better spent on a new block espically at that price!!!... and i would probably charge $75-125 for a repair like this one.. but if u wanted to repair it...then brazing it in my opinion is the only permanent solution...

Moderator Denis


Location: CAN
Joined:
Points: 638

Re: Cracked aluminum crankcase repair options?
Reply #26   Feb 3, 2013 12:21 pm
I used JB Weld once, it was for filling crack on a ford 302 head it was leaking right front corner , It was not only the gasket, the engine has already 300,000KM so i did want to redone the heads, so I use JB weld and telling you I sold the van and the guy still running it with the repair and still not leaking.

This message was modified Feb 3, 2013 by Denis



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