roadrunnerdk
Parking Attendant
Posts: 9
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posted December 27, 2011 02:10 PM
PING entropy
I have been writing with KZscott about 87mm pistons for my 12 over at kawasakiworld
and he said that you were the man to ask about this subject
hope you can help me with some info
tks
lars
  
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 27, 2011 02:18 PM
quote:
JE custom Pistons set #716554 ordered apr 8. 2009 from Brian
used new forging style, has cross bracing under dome, thicker skirts, other stuff, casting 985M, 6 gm heavier than before
Much sturdier pistons.
Previous pistons would lose .001-.0015" skirt diameter after very little use.
the new style holds up VERY much better.
I always tried to start out at .0018 - .0022 -ish
with the old style pistons the skirt deformed to the point where i had up to ,0040
this is the newer style I was talking about on the other forum
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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roadrunnerdk
Parking Attendant
Posts: 9
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posted December 27, 2011 02:26 PM
thanks
any idea about the compession ratio on these?
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KZScott
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Posts: 7235
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posted December 27, 2011 02:32 PM
I believe he was running around 15:1 with a seriously milled head, not sure what it would be with a stock head
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
entropy
Moderator
Posts: 8671
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posted December 27, 2011 02:41 PM
i was running as high CR as I could get (up to 16.2) while still keeping PTV a lil less than catastrophic w/ CL's around 103/103.
Head was milled about .060, Quench around .030.
Note that my pistons were custom based on the forging Scott quotes, the ones you get "off the shelf" are different.
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roadrunnerdk
Parking Attendant
Posts: 9
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posted December 27, 2011 02:46 PM
15:1 sounds interesting
my head is milled a bit too
i think i will contact JE to get a price on these
thanks again
Scott
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roadrunnerdk
Parking Attendant
Posts: 9
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posted December 27, 2011 02:54 PM
quote:
i was running as high CR as I could get (up to 16.2) while still keeping PTV a lil less than catastrophic w/ CL's around 103/103.
Head was milled about .060, Quench around .030.
Note that my pistons were custom based on the forging Scott quotes, the ones you get "off the shelf" are different.
i just went over to my garage to check on the used pistons that came with the muzzys block
they are forging 944M but they are not all in the greatest shape so i am getting 4 new pistons for the build anyway. Are the custums much more expensive then the regular?
thanks for sharing
lars
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entropy
Moderator
Posts: 8671
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posted December 28, 2011 12:17 AM
Customs aren't hugely more expensive, but you gotta know exactly what you want. I had pistons with valve pockets made exactly to fit my combo, give highest CR possible, while not hitting valves.
.
Honestly, my advice is don't go down the VERY expensive path i did looking for a few NA hp.
2 years and 26 complete builds to go from 210hp to 240hp...
56 trips to the dyno.
Sold my beloved 12, built a Busa.
275 NA hp 1st trip to the dyno.
283 NA hp 3rd trip... 
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dakota9498
Pro
Posts: 1181
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posted December 29, 2011 05:52 AM
entropy,
How much faster have you been on the Busa? Just curious. That is about 40hp more and better aeros, right? Didn't you go high 2teens or low 220's on the 12?
____________
2008 ZX14
Never argue with a fool, onlookers may not be able to tell the difference. ~Mark Twain
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entropy
Moderator
Posts: 8671
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posted December 29, 2011 09:05 AM
dakota,
the best i personally got outa the 12 was 218 in 1.5mi with a tailwind, right after that Doug meyer got a 222, before that day the fastest NA Kawasaki in the world! was 212mph (UK).
best my 12 did in the mile was 208 also with a tailwind (doug & i both hit 208 that day)
On the Busa with a lil headwind, i've hit 226 in 1.5mi, 220 in 1.0mi.
I had a 10 year obsession with the 12, loved it, learned to build motors..
But the Busa is a pure fukken freight train, and it fits my 6'3", 230# TeamFatAss better, more room in the cockpit..
____________
This moderator uses moderation in moderation
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2000redrocket
Pro
Posts: 1662
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posted December 29, 2011 05:46 PM
hey ent or doug, will my stock pistons and rods hold up to the stroker crank and ported head and be dependable? i have a whole lot of passes with no troubles and i would hate to screw that up past the known zx12 issues. i have been racing this bike since 2003 and i was that guy that rode in the rain to get there if there was a chance there was no rain there at the track> just tires and clutch parts sofar.
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Johnnycheese
Pro
Posts: 1008
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posted December 29, 2011 08:50 PM
no
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 29, 2011 09:10 PM
how much stroke?
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
dakota9498
Pro
Posts: 1181
|
posted December 30, 2011 01:56 PM
quote:
dakota,
the best i personally got outa the 12 was 218 in 1.5mi with a tailwind, right after that Doug meyer got a 222, before that day the fastest NA Kawasaki in the world! was 212mph (UK).
best my 12 did in the mile was 208 also with a tailwind (doug & i both hit 208 that day)
On the Busa with a lil headwind, i've hit 226 in 1.5mi, 220 in 1.0mi.
I had a 10 year obsession with the 12, loved it, learned to build motors..
But the Busa is a pure fukken freight train, and it fits my 6'3", 230# TeamFatAss better, more room in the cockpit..
That's awesome, I know how that is when you are obsessed with something like that. I have always liked the underdogs.
That 12 was moving for sure and that Busa is amazing. Do you have plans to squeeze any more out of it or is that it for NA?
____________
2008 ZX14
Never argue with a fool, onlookers may not be able to tell the difference. ~Mark Twain
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2000redrocket
Pro
Posts: 1662
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posted December 30, 2011 02:09 PM
4.6mm the 1375 setup minus the 1270 kit.
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entropy
Moderator
Posts: 8671
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posted December 30, 2011 03:51 PM
quote:
quote:
dakota,
the best i personally got outa the 12 was 218 in 1.5mi with a tailwind, right after that Doug meyer got a 222, before that day the fastest NA Kawasaki in the world! was 212mph (UK).
best my 12 did in the mile was 208 also with a tailwind (doug & i both hit 208 that day)
On the Busa with a lil headwind, i've hit 226 in 1.5mi, 220 in 1.0mi.
I had a 10 year obsession with the 12, loved it, learned to build motors..
But the Busa is a pure fukken freight train, and it fits my 6'3", 230# TeamFatAss better, more room in the cockpit..
That's awesome, I know how that is when you are obsessed with something like that. I have always liked the underdogs.
That 12 was moving for sure and that Busa is amazing. Do you have plans to squeeze any more out of it or is that it for NA?
There is ALWAYS more!!!!!
I'll do a test with bigger TB's on the short intake head. Might be interesting
____________
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 30, 2011 04:34 PM
quote:
4.6mm the 1375 setup minus the 1270 kit.
might need to clearance the skirts. i would only do a 4mm
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
2000redrocket
Pro
Posts: 1662
|
posted December 30, 2011 09:38 PM
i have the whole kit. just think it would work better with stock parts as a 1300 and stock cams
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 31, 2011 08:43 AM
I believe mr "dont be scared" ran that combo with some success, but I dont know if it was stock pistons or aftermarket... he liked the spray so?....
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
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