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athena big bore kit?


rick7476

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how so?

 

 i bought literally the first athena. not to run but to compared to the cylinders they copied poorly (vitos).

 

i wrote this in 2009 on another forum when i got them:

 

the description of the piston is wrong they are NOT forged moly coated pistons, they ARE a o.e.m. style(68mm though) CAST piston with a cheap tin coating. the intakes are too short to accept a stock reed cage. the larger water jackets that are mentioned are actually to small to use a stock water jacket plug and the kit doesn't supply any plugs so theres no way to keep this cylinder from leaking. the left cylinder has egg shaped intake bolt holes with threads only on the top portion of the screw cavity, intake bolts will thread in by hand but id bet they would strip if a allen wrench was used and they were tighten. back to the bore and piston, because of the piston they use and the triple ports its going to be short circuiting like crazy. the stock looking head with domes looks pretty good except that the domes are different then pro-design,vitos,modquad,noss etc. etc., they were 24cc also. theres alot more i could say about these but i'll stop here, if you want to pm me we could talk more.

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Boring Does plenty for you With the right port work, more displacement, more fuel, more air, and if you have domes, higher compression. It's all with what you do with the extras.

 

well seems like youve got it all figured out. guess you wont be the guy asking the questions no more but the guy with the correct answers. :rolleyes:

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Will a simple over bore make more power? No.

Is it worth hogging your stock cylinder out to the max? No.

Is it even worth doing big bore sleeves in a stock cylinder? No.

 

The only way going after displacement is cost effective and reliable on a banshee is if you step in to a true aftermarket cylinder with several millimeters of bore difference. Those cylinders are typically cast around the larger bore so the port work works with it as well. Not to mention they will also do it with out constantly leaking coolant like a stock cylinder would with a big bore.

 

Don't get me wrong, there are ways to make big bore stock cylinders work, but at this point with the aftermarket we have it's just archaic.

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