Big bore is well worth the price of going from 790 to 904. The 865 to 900...why??? Cams from 02/03 do the trick to 865s.
With that said, My Speedmaster only has about 38k miles on it, 25k with the BB, no problems whatsoever.
Biggest difference is that some swear by the nickaseal (sp?) coating inside the jugs. Wiseco BBs have steel sleeves which should run about 50k miles, then check them out. As stated above, they could still look and run cherry, just needs a brush-up with the honers anytime you take the pistons out. New rings as well.
The nickaseal cylinders, as offered form an LA firm, (Matt Capri's lot) as well as the FL Triumph speed shops (Bonnevilleperformance and D&D) I may be mistaken about who does what, but the nickaseal sleeves "CAN" last longer then the steel. They are stronger and can take the persistent friction better than just bare steel with chrome rings, therefore not wearing the sleeves or piston rings out as soon.
The physics behind them is sound, plenty of room for the Triumph to add the power. Tranny, rear end, brakes etc can easily handle the extra torque and ponies. (Watch clutch springs though)
The part about the cam holders is also very accurate. The aluminum head parts will wear-out far before the big steel stuff will. But...if you used bearings on the cams, you would need really heavy duty ones. That my friends is why these bikes are under the magical $10k mark. You could improve a lot of these bikes, just gonna cost ya. Transparent aluminum?
Speed is $$
How fast ya wanna go?
Stroker??? Hmmmmmm may be this winter's project.
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Last edited by Dinqua; 11/18/2010 6:53 PM.
