Need advice on gen 4 engine build - Kawasaki ZX-10R.net
 
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post #1 of 7 Old 12-08-2014, 01:13 AM Thread Starter
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Need advice on gen 4 engine build

Hello everyone,

So I need to squeeze another reliable 10-15 horsepower out of my 2011 and I'm pretty sure that apart from nos, engine work is my only option. It has 1/6th throttle tube, bmc race filter, all emissions removed and Pair valves blocked off, guhl ecu flash, pcv with custom tune and Austin racing slip on exhaust (no cat). The secondary throttle bodies are still in. The bike made 178 on the Dyno. Should I just do a thinner headgasket and remove the secondary butterflies, then retune? Should I do race cams and port and polish? What are the gains? Trying to spend less than 3k or around there n
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post #2 of 7 Old 12-08-2014, 04:52 PM
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Since you're in Long Beach, I'd simply drive over to Attack Performance in Huntington Beach and tell them what you're after and your budget.

They'll be able to put a package together for you that should meet both your goals and budget.
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post #3 of 7 Old 12-08-2014, 06:17 PM
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What is your application goal.
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post #4 of 7 Old 12-08-2014, 07:36 PM
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Quote:
Originally Posted by scout View Post
What is your application goal.
Quote:
Originally Posted by Jstamm33 View Post
I need to squeeze another reliable 10-15 horsepower out of my 2011
Pretty much stated that in the very first sentence.
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post #5 of 7 Old 12-09-2014, 05:09 PM
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Thinner head gasket might gain you a negligible 2hp. I would talk to a local bike specialist and have the head decked, thinner head gasket, port work, maybe an intake cam and have them degreed to what you are looking for.

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post #6 of 7 Old 12-09-2014, 06:07 PM
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Quote:
Originally Posted by ZX10RArcher View Post
Pretty much stated that in the very first sentence.
I was waiting to see what advice he had other than to switch to amsoil and run it till she blows.
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post #7 of 7 Old 12-09-2014, 08:23 PM
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ported a gen 4 head with .015 deck, .45mm hg, cnc vj. customer assembled with race int. only degreeing cams for midrange over top end as he rides in mountains. made 193 sae on pump gas. i would leave flies in on those larger tb's.

Last edited by gazx10; 12-09-2014 at 08:47 PM.
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