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Showing results for tags 'cylinder porting'.
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Hello Newbie here, I'll do my best to give you all of the relevant information needed. For background info, I just had my 97 Banshee motor completely rebuilt - the pistons and crank were both junk when I bought it, I've yet to ride it. The motor build consisted of 35.5mm Weisco pistons and a new hot rod crank with the stock cylinders machined to match. I, unfortunately, sort of overlooked adressing the porting on the cylinders and the gentleman who built it didn't really bring that up (cylinders believed to be previously ported). To fuel it the shop and I spoke of carbs and I settled of a set of knockoff 34mm PWK's from Vito's Performance. Can I get a good idea of the port job by removing the intake manifold and reeds? Mods consist of 35.5mm Weisco Pistons Stock Length Hotrod Crank Mild ported cylinders??? VForce 4 Reeds with billet manifold 34mm Knock off Keihin PWK carbs w/ rando small filters to match (Vito KN1090 style filters had too large of ID on the flange) - no air box. Toomey T5 Exhaust Pro Design Cool head with 19mm domes Ricky Stator w/ adjustable timing plate (I figure this is irrelevant) I need to know in the very near future if these carbs are too much for my build as I'll only have so long to address this with the shop I went through / Vitos. I intend to mostly ride in the summer with temps between 65 - 85 degrees at 900ft elevation. -
Hello all! I have questions about a build I'm doing on my banshee. I just got it last year, and melted a piston recently due to a leaky head gasket that caused a over-heat cyl to piston weld problem. Digging into it, I found out it came with a 4mil short rod stroker with a spacer under the cylinders. I want to delete the spacer and bought a cool head. I'm going to turn the domes to accept the 2mm pop-up, then redo the chambers to get the right cc. But that's getting ahead of myself because that'll happen after the cyls are finally on to get a deckheight measurement for the correct squish with the stock 0.20 base gaskets. THE PROBLEM: I ordered stage III porting templates from Race Logic, and am trying to figure out how to line them up. Do I go off the top of the cylinder, or do I compensate for the raised piston height? And then at that rate, do I raise the transfers as well? After many searches that had conflicting info, I'm not familiar with the right timing numbers for this type of build, but I do have a degree wheel and have no problem mapping it out. The templates sounded like the easy way to siamese the porting. Thanks in advance!