Gen 3: 2008-2010 Kit pistons - Kawasaki ZX-10R.net
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post #1 of 17 Old 01-16-2015, 03:48 AM Thread Starter
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Kit pistons

Anyone have ever used kawasaki race kit pistons???
p/n 13001-0100 (gen 3)
p/n 13001-0078 (gen 2)

I know they are one ring pistons
Any problems with that?

Gen3 : Arata full exhaust , KN air filter , 520 DID Renthal , oem Ecu converted to Race Kawasaki Ecu , milled ported head , Kent camshafts , lowered , Pk shifter , 14k rev limiter . Ecu tuned by TRE ( mr Balogiannis)

http://www.youtube.com/watch?v=eLsF4A1k_ew
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post #2 of 17 Old 01-16-2015, 06:01 AM
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What is the difference in them compression wise over the stock ones?
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post #3 of 17 Old 01-16-2015, 07:02 AM
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I looked into it for my 07. Two problems: you need the kit long rods to run them, and the pistons don't have a long life. From my perspective, I was able to find someone with two sets of pistons, so what happens after both of them are worn out ? I can't put a spacer under the cylinders as they're cast in with the cases, so the rods are now useless. Decided not to do it for that reason.

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post #4 of 17 Old 01-16-2015, 07:06 AM
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believe they are 14.2 compression. if it helps any I ran a set of single ring yoshimura pistons for several years on a street/strip bike. with no problems. it was fast, never had a problem with oil or sealing but lower compression. chk'd leakdown on it yearly, held up well. kit pistons will produce too much heat for any riding but racing due to heat imo.
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post #5 of 17 Old 01-16-2015, 10:50 AM Thread Starter
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So far i got two problems
one is too much heat and the other is i need longer rods
@gazx10 what do u mean when u wrote " racing due to heat imo "

Gen3 : Arata full exhaust , KN air filter , 520 DID Renthal , oem Ecu converted to Race Kawasaki Ecu , milled ported head , Kent camshafts , lowered , Pk shifter , 14k rev limiter . Ecu tuned by TRE ( mr Balogiannis)

http://www.youtube.com/watch?v=eLsF4A1k_ew
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post #6 of 17 Old 01-16-2015, 02:12 PM
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You need longer rods because they eliminate the middle ring on the kit pistons and move the oil ring package higher up in its place, thus the piston pin hole is moved higher, thus the need for longer rods. This doesn't change the stroke any but increases leverage on the crankshaft with the longer rod as the piston dwells a few degrees longer at TDC.

As the late great Smokey Yunick once wrote, put the longest damn connecting rod in the engine that will fit.

That's the idea behind the longer rods, so the pistons and rods work as a set.

So yeah, you need the Kit rods with the Kit pistons. That's a hell of a combination.

The second ring is just an oil scarper ring anyway.
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post #7 of 17 Old 01-17-2015, 12:22 AM Thread Starter
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Ur opinion about the longevity of these single ring pistons???
I m a street rider and i m not gonna put my bike on a track but i like 2nd roll on pulls with other bikes
Ι know that longer rods-pistons is a hell combination as i have tried this trick 10 years ago on my car

Gen3 : Arata full exhaust , KN air filter , 520 DID Renthal , oem Ecu converted to Race Kawasaki Ecu , milled ported head , Kent camshafts , lowered , Pk shifter , 14k rev limiter . Ecu tuned by TRE ( mr Balogiannis)

http://www.youtube.com/watch?v=eLsF4A1k_ew
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post #8 of 17 Old 01-17-2015, 12:51 AM Thread Starter
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Also as i took a look at the race kit manual for 06/07 zx10 i saw that kawi gives two different part numbers for the race kit pistons
The one type could adjust the cylinder compression to 14.3 and the other to 14.5

http://garth285.com/manuals/06-07%20...t%20Manual.pdf

page13-14

(1) 13001-0077
z Kit pistons are exclusive the two piston rings for reduce the compression height
(between the center of piston pin hole and the shoulder of the piston) and the
mechanical friction loss.
z Kit piston has more reduced the weight compared the original piston.
z To adjust the cylinder compression to 14.3, use the kit pistons and grind off the cylinder
head under surface to 0.4 mm.
○ Always use the higher octane rating gasoline for prevent the knocking.
z Use the kit piston rings and kit piston pins.
z When replacing the kit pistons with the original pistons, inspect the squish (refer to the
Cylinder Compression section).



(2) 13001-0078
z Kit pistons are exclusive the two piston rings for reduce the compression height
(dimension between the center of piston pin hole to shoulder of the piston) and the
mechanical friction loss.
z Kit piston has more reduced the weight compared the original piston.
z To adjust the cylinder compression to 14.5, use the kit pistons and remodel the original
cylinder head.
z Use the kit piston rings and kit piston pins.
z When replacing the kit pistons with the original pistons, inspect the squish (refer to the
Cylinder Compression section).
z Remodel the cylinder head according to the following figure.
z The specified squish is 0.60 to 0.65 mm: front and rear, and 0.60 to 0.67 mm: left and
right side.
z Replace the cylinder head gasket with the thinner or thicker one or grind the side squish
portions of the combustion chamber and the piston head with the emery cloth if the
squish is without the specified range

Gen3 : Arata full exhaust , KN air filter , 520 DID Renthal , oem Ecu converted to Race Kawasaki Ecu , milled ported head , Kent camshafts , lowered , Pk shifter , 14k rev limiter . Ecu tuned by TRE ( mr Balogiannis)

http://www.youtube.com/watch?v=eLsF4A1k_ew

Last edited by theatiss; 01-17-2015 at 01:01 AM.
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post #9 of 17 Old 01-17-2015, 01:12 AM
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Y dun use wiseco or je high comp pistons that cld go with stock rods?
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post #10 of 17 Old 01-17-2015, 03:52 AM Thread Starter
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Quote:
Originally Posted by foursix View Post
Y dun use wiseco or je high comp pistons that cld go with stock rods?

I like the hard way
i m a huge fan of kawasaki race parts

Gen3 : Arata full exhaust , KN air filter , 520 DID Renthal , oem Ecu converted to Race Kawasaki Ecu , milled ported head , Kent camshafts , lowered , Pk shifter , 14k rev limiter . Ecu tuned by TRE ( mr Balogiannis)

http://www.youtube.com/watch?v=eLsF4A1k_ew
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