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Shark's 39E

Posted: Fri Sep 02, 2016 12:32 pm
by blackshark
Imagestarted my resto on this machine, intending a ground up rebuild, see how it pans out

Re: Shark's 39E

Posted: Fri Sep 02, 2016 1:03 pm
by blackshark
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this bikes the 'black' version, perhaps powder coated frame & lots of black spray bomb all over the place

Re: Shark's 39E

Posted: Fri Sep 02, 2016 1:10 pm
by blackshark
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can i enter this wheel into the 'most rotted list', the tube still held air.Image[/URL[URL=http://s398.photobucket.com/user/blacks ... 8.jpg.html]Image

Re: Shark's 39E

Posted: Sat Sep 03, 2016 1:43 am
by Mezo
Yep that's the worst cancer ive seen. :omg:

Mezo.

Re: Shark's 39E

Posted: Sat Sep 03, 2016 1:48 am
by blackshark
Mezo wrote:Yep that's the worst cancer ive seen. :omg:

Mezo.
The previous owner said the bike sat in the shed for years and his dog would piss on the wheel. that wheel is off my spares bike, I thought being in worse condition than the wheel on the bike I'm restoring, i'd rebuild them first while keeping the others intact till I've finished lacing up.

Re: Shark's 39E

Posted: Sun Sep 04, 2016 8:20 am
by blackshark
I could never get this engine started, no spark, I didn't put too much effort in, it certainly felt like it had plenty of compression.
I started pulling it apart, someone has at some stage put a high comp piston, it's 96mmImage
barrel looks ok, i think.
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Re: Shark's 39E

Posted: Sun Sep 04, 2016 8:42 am
by blackshark
The middle cam journal seems to be in bad condition, the corresponding part of the cam not so bad or am I mistaken?ImageImage
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is that serviceable or repairable?
I found an engraved number on the barrel, head & head cover, probably from being in a machine shop at some.
I can see a bead of sealant where the engine cases join, so it's been apart at some stage, the con rod doesn't appear to have any slop(apart from a bit of side to side), i still need to have a look down inside to check out the gears, I've ordered one of those usb camera things, yet to arrive.

Re: Shark's 39E

Posted: Tue Sep 06, 2016 1:46 am
by blackshark
I took the head, cover & cam to a motorcycle engineer, he said just give it a bit of wet & dry to remove any high spots and just use it, he said similar things used to happen to old Honda XRs.
Probably lack of oil getting there.

Re: Shark's 39E

Posted: Tue Sep 06, 2016 1:53 am
by blackshark
Made a stand for the engine.ImageImageImageImage

Re: Shark's 39E

Posted: Tue Sep 06, 2016 5:15 am
by jibber
I have read that you can tidy up the journals by lapping down the cam cover and head joint, effectively closing the bore down and then running a hand lap/hone through to restore the size.
Stands tidy :goodjob: