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Motorcycle Discussions => British Bikes => Topic started by: triton7775 on October 17, 2015, 10:16:03 AM

Title: triumph
Post by: triton7775 on October 17, 2015, 10:16:03 AM

hi, does anyone know how tight a fit of the bottom of the barrel sleeves in the crankcase mouths of a pre unit triumph bonnerville. I want to fit a big bore 750 barrels but will have to open the crank case mouths slighty.

Title: Re: triumph
Post by: P.V. Motorcycles on October 17, 2015, 11:28:48 AM

I'm afraid it's not much of an answer, but I'd suggest joining up and posting the same question here:

http://www.britbike.com/forums/ubbthreads.php?ubb=postlist&Board=4&page=1

That way, you'll be pitching it to a Triumph-only audience, including folks who race and sprint (and so are likely to have done big-bore mods), and those who worked as Triumph dealers in the 60s and 70s.

By the same token, they'll also tell you if it's not a good idea, or likely to cause problems.

Nick

Title: Re: triumph
Post by: mark2 on October 17, 2015, 02:43:59 PM

standard 750 barrels or morgo ? you also need a 9 stud head

Title: Re: triumph
Post by: mini-me on October 17, 2015, 03:31:18 PM

They just need to drop in, not tight push in