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Straubel 6HP cracked cylinder

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veloce
Member
Username: veloce

Post Number: 21
Registered: 08-2003


Posted on Wednesday, October 10, 2012 - 11:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Sorry to report there is a cylinder crack in my 6HP Straubel. I have used this engine extensively for the past 15 years. The crack is low, around the ports. I will try to repair but if there is anyone who has one of these engines they will part with, please let me know.

Any advice on welding the cylinder? I may need to have a new piston made. Any recommended sources?

Thanks,
Russ
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keith
Senior Member
Username: keith

Post Number: 363
Registered: 02-2002


Posted on Thursday, October 11, 2012 - 08:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Russ,
Is it a freeze crack or salt water crack? Being from Milwaukee I would guess freeze crack. Do you expect you will need a new piston because of wear or because of distortion from welding? Did you ever hear of metal stitching? Any pictures of the damaged area?
Keith
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raa
Senior Member
Username: raa

Post Number: 51
Registered: 02-2007


Posted on Sunday, October 14, 2012 - 11:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Russ

I tried to email you but it was rejected, what is your current address?

Dick
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veloce
Member
Username: veloce

Post Number: 22
Registered: 08-2003


Posted on Monday, October 15, 2012 - 01:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Dick and Keith,

My email is veloce192 at sbcglobal dot net. I disassembled the engine and the news isn't as bad as I thought. The cylinder has a small crack in the area adjacent to the exhaust port. I was able to remove the piston and it seems fine. My thought on a new piston was that I will need to re-bore after welding the crack. The piston weighs a ton! Would an aluminum piston have less vibration? Where would I get a piston made? I will take the engine to a cast iron repair facility soon. Metal stitching would be difficult on the interior of the cylinder.

Thanks for any advice.

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