08smokes

Expert Class
God is love.
Posts: 113
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posted November 24, 2012 03:06 PM
Aftermarket Pistons...
We got the motor pulled out of the Gen 1 to make some improvements to the head. We're gonna go ahead and replace the rings and I was thinking about some drop in pistons.
Who's better- JE or Wiseco? About how much additional power could I expect to see? Trying to figure out of it's worth the extra $600.00 or so.
Thanks,
Mike
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kawpower
Zone Head
Mr kawasaki 2 you!
Posts: 887
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posted November 24, 2012 04:20 PM
je or cp.
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Cecil County 2010 Motorcycle ET Champ. 9 Wins- 4 RUs .06zx14 turboed for 2012 .
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smokinZX14

Needs a life
Posts: 10197
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posted November 24, 2012 05:46 PM
I like J&E myself ..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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smokinZX14

Needs a life
Posts: 10197
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posted November 24, 2012 05:52 PM
quote: We got the motor pulled out of the Gen 1 to make some improvements to the head. We're gonna go ahead and replace the rings and I was thinking about some drop in pistons.
Who's better- JE or Wiseco? About how much additional power could I expect to see? Trying to figure out of it's worth the extra $600.00 or so.
Thanks,
Mike
Well if your new pistons raise the compression a point and a half , lets say 13.5.1 you would see 10 to 13 HP gain.. But if you have milled the head and allready have 13.5.1 it's anyones guess at that point .. If you allready did mill the head skip the 600 pistons .. If you are going to spray the motor with a big shot spend the 600 for the pistons..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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quick6

Expert Class
Posts: 257
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posted November 24, 2012 06:10 PM
je over weisco all day. go ahead and drop some in. that way later on if you want to add cams you will be set as the valve reliefs on factory pistons arent deep enough to add alot of cam.
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2006 zx14, fully dressed and sliding(Charlie Sheen)
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greenbusa

Novice Class
Posts: 56
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posted November 24, 2012 07:39 PM
Wossner pistons! IMO best pistons made now. Email John Noonan at
john@wossnerpistons.com
Tell him I sent you, he's a great guy and will take care of you. I've used them all and the Wossner are really nice, hand polished, teflon coated skirts, and factory gas ported.
http://www.wossnerpistons.com/products/product-details/id/wos-8785da-4/name/wossner-piston-kawasaki-zx14-84-mm-bore?cookietest=1
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400+ hp daily driver
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08smokes

Expert Class
God is love.
Posts: 113
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posted November 25, 2012 03:19 PM
Thanks for the replies. As Lee said, it is already milled .020. Assuming I did get pistons, that would raise the CR to about, 15:1? I'd still like to run pump gas, so i'd just need a thicker head gasket for that?
I also just got some Kibblewhite SS valves for it. I'm hoping the new pistons could net an extra 8 hp. I'm not an expert on these things though- that's why i'm asking for your guys expert opinions.
Mike
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Big_T112

Pro
Posts: 1061
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posted November 25, 2012 03:59 PM
Get a base spacer to set your deck heigth. they make them anysize you want for the Busa.
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smokinZX14

Needs a life
Posts: 10197
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posted November 25, 2012 04:08 PM
quote: Thanks for the replies. As Lee said, it is already milled .020. Assuming I did get pistons, that would raise the CR to about, 15:1? I'd still like to run pump gas, so i'd just need a thicker head gasket for that?
I also just got some Kibblewhite SS valves for it. I'm hoping the new pistons could net an extra 8 hp. I'm not an expert on these things though- that's why i'm asking for your guys expert opinions.
Mike
No don't get a thicker head gasket ..You if want new pistons just order ones with factory CR .. That way you will still have the same CR as you do now and still run pump gas .. If the CR remains the same it's not going to make more HP with after market pistons ..But it will be safer for a bigger shot of spray and you will get deeper valve pockets if you want to add larger cams ..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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Halvefast

Zone Head
Posts: 806
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posted November 27, 2012 07:57 PM
I'm running wossner 13.5-1 drop ins, all the rest are kawasaki parts, valve springs, cams, rods.
Head has some work, milled 0.025 makes 209hp on Q-16. Daily driver just swap out for premium pump gas.
Call John or Alex at Wossner!
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Texas Mile 200.256mph - Oct. 2007 (Update 202.577mph Oct 2008) NOS assisted
ECTA Ohio Mile 195.132mph
TexasMile 2012 199.9 mph all motor!
Streetriders Shootout 2008 series Pro/ET Champ!
Streetriders Shootout 2007 Series Pro/ET Runner-up!
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