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Blown Crank..


Capone

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I'm running coolhead 18cc domes (180psi) compression on a stock crank with new seals & bearings. Obviously its not going to hold up, I'm planning on a weekend of a complete teardown, powder coating, and i want to replace the crank to something stronger, or i'm going to have to switch domes. I really like to drag, and the bike feels insane with the power its got now. I would rather switch crank than domes.. How would the hotrod's crank do? Or should I just have the stockie trued & welded? Thanks.

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A friend of mine went about 8 or 9 years on a stock crank (not even welded) with about 165psi and ported runing pump gas (dyno at 60 HP). It started running bad as the bearings began to get too much play in them, but the motor never grenaded. I have heard of others that did not last near that long though, so you just really never know.

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bump.

 

I've been reading about crank pressure, and how much it can handle. As I stated above, I believe my crank is pretty much at the end of its potential, and I'm looking for an upgrade.. since I'm going to bump timing soon.

 

I found some hot rod connecting rods, for 80$ a piece;

http://www.pro-flo.com/proflo_wiseco_hot_rods.htm

 

If I replace stock rods with these, then have the crank welded, will it be bullet proof? Thanks..

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