what piston does everyone prefer for performance AND quality. im thinking about going .40 over wats everyone think? any suggestions will help alot.
piston question
- Thread starter nightmare420
- Start date
yea your just gonna lose the lifetime of your cylinder jug unless you have extras go for it it will give you more power
BOring out isnt a performance gain, it is a loss of cylinder use. i would stick with weisco, all i use all u need to know! forged of course
it is a performance gain!! bigger displacement... thats why ppl get the big bore 240 kit.
i know it only brings power back that you might have lost over years, but i blew my blasty up i gotta do something...
ohhhhh not again. 2-3 cc isnt a gain. u may get 1/4 hp. over bore is because there is damage to cylinder walls. the sleave for bb is waaaaaay larger than a stock cylinder and only gain 40cc.
I would go with a Wiesco, they are the best in the industry. and tear down your top end to see what the bore looks like. If it isn't damaged I would stay away from boring it. If it is only bore it to the smallest size that will still get rid of the damage. While boring .040 does technically raise the displacement of the engine the amount of power you gain would be so small you will never notice. Not to mention, you only get so many over bores on a cylinder till it has to be resleeved.
cheap pistons end up in the bottom end....spend the extra $$$ money now and it will save u later. trust me..
I ran a Pro X in my 96 KDX 200, because IIRC, I couldn't get a wiseco for it...at the time????????? I duno, that was like 10 years ago or so, ish.
In terms of the gains over a stock piston that I've noticed when swapping one in from any other bike/quad I've owned, it was the same. Wiseco definitely has a longer reputation for kick ass aftermarket pistons, but I wouldn't discount Pro X just because Wiseco has the better (longer standing) reputation. Whatever brand (well, lets keep it to Wiseco or Pro X) will give you a lighter, stronger piston......ie, more power. It's always noticeable because you're putting it in when the stock piston is spanked. Another stock piston would be an improvement at that point, usually!!
I would go Wiseco as first choice, with Pro X as second. I doubt you'd notice a difference between the two, all else equal.
Also, keep in mind, these lighter aftermarket pistons (Wiseco and Pro X for sure) are forged, not cast. There are benefits to cast....less break-in time, don't have to worry about warm up time as much (although you always should warm it up real good before hammering down, irregardless). While the aftermarket (Wiseco/Pro X) forged pistons do give a little more power, you definitely have to be more cognizant of warm up times (especially when it's cold as ballz (for you southerners, that means so cold your balls feel it))with the aftermarket forged pistons than the stock cast. If you hammer down before you're all warmed up with the aftermarket pistons (especially if you've not done a good job with break in) that gives you that little extra power, you're way more likely to seize that biatch up than with the stock cast piston.
In terms of the gains over a stock piston that I've noticed when swapping one in from any other bike/quad I've owned, it was the same. Wiseco definitely has a longer reputation for kick ass aftermarket pistons, but I wouldn't discount Pro X just because Wiseco has the better (longer standing) reputation. Whatever brand (well, lets keep it to Wiseco or Pro X) will give you a lighter, stronger piston......ie, more power. It's always noticeable because you're putting it in when the stock piston is spanked. Another stock piston would be an improvement at that point, usually!!
I would go Wiseco as first choice, with Pro X as second. I doubt you'd notice a difference between the two, all else equal.
Also, keep in mind, these lighter aftermarket pistons (Wiseco and Pro X for sure) are forged, not cast. There are benefits to cast....less break-in time, don't have to worry about warm up time as much (although you always should warm it up real good before hammering down, irregardless). While the aftermarket (Wiseco/Pro X) forged pistons do give a little more power, you definitely have to be more cognizant of warm up times (especially when it's cold as ballz (for you southerners, that means so cold your balls feel it))with the aftermarket forged pistons than the stock cast. If you hammer down before you're all warmed up with the aftermarket pistons (especially if you've not done a good job with break in) that gives you that little extra power, you're way more likely to seize that biatch up than with the stock cast piston.
heres a vid of the startup after the rebuild. right when i tape the gas it revs up real high even when im not holding the throttle any suggestions?
http://s189.photobucket.com/albums/z147/nightmare0098/?action=view¤t=042.flv
http://s189.photobucket.com/albums/z147/nightmare0098/?action=view¤t=042.flv
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wtf?!? howd u get a pic of the piston i fried i didnt even post it!! lmao that sux tho. mine was almost just as bad
Yep get a Wiseco and only bore it enough to fix it!, if you want more CC's get the big bore kit, it 6mm over stock.
