ZX10 Motor Mods (ATTN: jlg0987)

Had a quite a few PM's and people at the shop asking me about my ZX10 and it's motor mods to get the kind of power it's putting out. Just thought I'd share the specifics of the build here should anyone look to build a motor like this.

Cams degreed, intake: 114 degrees, exhaust: 108 degrees

Ported and milled head

Kawasaki 50mm high-comp headgasket (#11004-0034): www.kawasaki.com/Kaw...=2008&CategoryID=132

Combined with:

Akrapovic Evolution Open Full System : www.akrapovic.com/mo...x-10r-2008/racing-48

Bazzaz Z-Fi Reverse QS: www.bazzaz.net/bz1/i...irtuemart&Itemid=181 (08+ ZX10 unit can tune all 8 injectors)

The combination of the milled head and thinner gasket has the bike running around a 15:1 compression ratio. I don't know how much was taken off the head because the previous owner did the milling but when I find out the exact number I'll update the list. Running the OEM map (Bazzaz not tuned at all) the result was 195hp on 87 octane pump gas on a Dynastar dyno, 209hp on VP 110 with a custom built map.



For comparisons sake a Dynojet dyno, probably the most commonly used in the motorcycle industry, typically reads 4-5% higher than a Dynastar. All I know is this bike is too fast for me and has already destroyed 1 rear sprocket since I've owned it Many more to come I'm sure.

Holy crap! Insane powwwa!

OK, I'm going to be an ass here - 15.0:1 on 87 octane?

And the power....

I feel threatened. We need a showdown......

Quote:

Originally Posted by GSXRKK6

And the power....

I feel threatened. We need a showdown......

I understand that my R6 can be intimidating, but let's relax and not get into Torque-style street battles.

87 is just what they had in it that day when doing the dyno run. I always run 91/94 in it.

I'm just shocked that you could run it on 87 octane without severe detonation.

Quote:

Originally Posted by GSXRKK6

I'm just shocked that you could run it on 87 octane without severe detonation.

I would be surprised if running at 15:1 on 87 even for a short period of time didn't cause real damage.

Quote:

Originally Posted by mikeiscool

I would be surprised if running at 15:1 on 87 even for a short period of time didn't cause real damage.

Unless "the stuff they had in it at the time" was race gas, I agree 100% plus an extra dollop of 5%.

That is 105% agreement.