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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I ride single, but I'm a large man. I don't do burn outs, but I do like to get on it sometimes after a stop sign or stop light.
Originally Posted by Next In Line
Where is the engine rpm sitting at most?
Currently I'm running Andrews 57. They come on about 27-28 I ride 3-3.5. I would adjust my rpm for the new build but want it to come on quite a bit sooner. I want it down low close to low 2's.
Originally Posted by Next In Line
How many miles do you want to get out of your existing engine / bike?
I want it to last. I need a tank. Obviously that is what everyone wants. Does it fit in with my desires? That I don't know.
If I go 107" I'll probably kick myself in the butt for not going larger but I don't know that I need to go as large as 124". Thought of maybe going somewhere in between.
It may take a while before you kick yourself in the butt for building a 107", probably one riding season.:icon_wink" Once you get to the point of splitting cases for case boring, Timken conversion, crank replacement, the extra cost to build a 124" motor is marginal. I ride a 2002 FLHT, all bore 107" (124TQ/110HP on a "stingy" dyno); it is a strong runner. However, for less than $1000 more, the 107" could have been a 124". Do I need 124", not really but if the 107" was a 124", I would not be kicking myself in the butt for not spending the extra $$ for more displacement. Don't cross a 124" off your list because you think you "don't need" it.
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