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me and hippo were discussing stroker engines the other day. he feels
that if your going to stroke an engine go big. i disaggree completly
there are lots of issue to think about and the first one is piston speed.
the bigger the stroker the more piston speed. harley must have this in mind when they built there 103 for the public. we have built 103/107
117 engine the bigger the more expesive. there is machine work/clutches
gear ratio changes to consider.plus a117 to me is not that much fun to
ride like a 103.the other day a friend of mine stopped by with a 135
emc engine.that was one of the most wildest engines i have ever heard.
that bike had a grocery list of changes to make it some what rideable.
i guess the bottom line is how deep are your pockets. i like a 103
with or 2in vortec head it got all the power i need. having trouble
affording the rear tire it eats up.
short-block charlie
 

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SBC, i guess its like small blocks, chevy made a bunch of sizes but some of em like a 327,a 350 or a 283 just seemed to run better than the 305,307 or 400. gotta have something to do with the bore to stroke ratio IMO. same should hold true on a big twin.
 

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Know very little about stroker hd, but in the auto side, bigger is better. There is no replacement for cubic inches. It's all a matter of torque vs hp. I believe if you build enough torque, the hp will follow. How fast you wanna go depends on how deep your pockets are. High torque and high gears, I likem like that.
 

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In the V twin its all about piston speed. That'll shake the motor apart. So before the stroke gets long you better fatten up the bore. But watch those short skirts!! I've see people try and run a 4.9 stroke on a big bore kit (3.875). Yee haaaa! Better trailer that one to your rallies.
 
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