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GS750 2V Cyl Head

fast pom

fast pom

Forum Mentor
Hi guys got a problem. Ran the bike at a track day last week had my fun stoped by bad rattle from top end. When i removed the cam cover the R/H Exhaust cam cap has been ripped out of the head three striped threads and one broken bolt.

On closer inspection all of the threads have been helicoiled . so as i am lead to believe cant be done again. I have remove the head there was no contact with the piston so it look like the threads just failed.

All and any help gratefully received . I have also posted this on Oldskool i know some of you also frequent there .

Many thanks Dave
 
Give me a ring, Dave on 318 0013 - I'm local and have the gear to helicoil whatever is needed - or put in inserts.It is fixable. After the weekend please - Sound of Thunder this weekend.

Greg
 
Dave I had the same issue with a 550 head. Two of the four holes to a cam cap were stripped out. They too had been heli-coiled previously. So the next size up was to be 8mm because the steel threads had been pulled out of the head leaving a hole about 7mm. The holes could not be drilled out any further without going into the cam bearing area in the head.

It could be there is a bit more meat on a 750 head, but the machine shop handed the head back to me and said it could not be fixed.

Good luck.

P1040171.jpg



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