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Re: My Thunder Bike Cams
Cowtipper #174492 07/22/2007 8:04 PM
Joined: Jan 2005
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from what i underatand there is a company who has drop in hc pistons for the 865. i believe it was JE but i am not positive. but the 904 is proven with many members on here having great luck with it. by next year i will be able to report how i feel about it

Frank


(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves NOW-2010 silver and black tbird
Re: My Thunder Bike Cams
wildmike #174493 07/24/2007 1:31 AM
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Winter turned on a beautiful weekend so I managed to get in another couple of hundred kms...

Before this upgrade I never went over 5k rpm, I've found my riding style has changed now cause I just luv being on the gas! accelerating up thru the gears with a carful eye on the taco ( embarrasing to hit limiter) clickin into 4th at around 140kph, and it's time to button off...

For every day riding (cruising) I'm positive it's stronger up thru the midrange, very user friendly...

Machine work on the head was, I thought, very expensive, but without it i'm sure the cams wouldn't have released their full potential...
Head skim, 3 angle grind and material added and removed from the ports, stock valves and springs...

I have no idea as to the specs of the cams but they work for me...

I don't know anybody in NZ who has done a B/B so can't comment on that but do know of several happy people who have had cam and headjobs done...

But maby as Cowboy said...

790 - B/B
865 - Cams and headwork

Safe riding all and roll on spring

Last edited by wildmike; 07/24/2007 1:40 AM.
Re: My Thunder Bike Cams
wildmike #174494 07/26/2007 1:27 PM
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ANybody got info on these high compression BBless pistons?

Re: My Thunder Bike Cams
Jimmy2Bad #174495 07/28/2007 1:23 PM
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I don't think they exist, you'd have to rebore or rehone anyway, by the time you buy the pistons for $250-300, a gasket set, and rebore/rehone, you'll be at or above 500 dollars so why not do the 904?

Last edited by sweatmachine; 07/28/2007 1:24 PM.
Re: My Thunder Bike Cams
sweatmachine #174496 07/28/2007 6:23 PM
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Quote:

I have no idea as to the specs of the cams but they work for me...





A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)
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