929cc to a 980cc - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 140 Old 09-30-2003, 7:19 PM Thread Starter
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Re: 929cc to a 980cc

Well for you that have seen my prior posts, you know that I've been looking for a little more power. *In those posts, I mentioned shaving the flywheel and litening the crank. *With the input received, I decided it was not what I had been looking for. *
Not being feasable to buy a new bike and wanting to keep up with the power delivery of the new bikes I've decided to bore out the 929 motor to a 980cc (76mm pistons). *And also bump the compression up to 13:1. *According to Dan Kyle, he said it would not be worth it, but I am a person that loves to tinker (although I definately do value his knowledge). *My understanding is that he has only tried bumping compression on a 929, but not tried to bore as well as bump compression. *So the pistons are on order and the case has been sent out. *All in all, around $1000 ($550 JE Pistons, $450 for machining and Nikasil coating, and $50 for a new head gasket and boring of that to a 76mm. *Labor will be free as I am doing this on my own.
I've already port and polished the head w/ a 3 angle valve job and dropped in Erion Racing cams with the Micron Serpent system.
I have no real reason to bring this up, except for sheer excitement. *When I get it all back together, I plan to have it custom mapped, and I will get the dyno results. *Not sure if it will happen before winter as it is starting to get cold up here in Wisconsin. *If anyone is interested I can take pics of the process. *I hope to have it back and together in about two weeks.



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post #2 of 140 Old 09-30-2003, 7:29 PM
 
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Re: 929cc to a 980cc

Sounds interesting. I'm waiting to here about it, especially the end result. Good luck.
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post #3 of 140 Old 09-30-2003, 7:29 PM
 
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Re: 929cc to a 980cc

What exactly are you going to do with the Head Gasket??? ouch!

And not flaming but, why a 3 angle cut if you're doing it yourself? Especially if you like tinkering. I'd smooth out the throat a bit more with an extra angle minimum.

Ride Red
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post #4 of 140 Old 09-30-2003, 7:40 PM
 
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Re: 929cc to a 980cc

Interesting! *Keep us posted!

Dan and I boosted compression a bit on mine with no real result.







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post #5 of 140 Old 09-30-2003, 7:46 PM
 
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Re: 929cc to a 980cc

Is there a head gasket that will work or would the head need to be o-ringed?

Sounds like something I'd try. Good luck and keep us updated on the progress!!!
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post #6 of 140 Old 09-30-2003, 8:10 PM Thread Starter
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Re: 929cc to a 980cc

Sorry for the confusion. The head work has already been done (not by me) by Four and Six Racing (Chicago, IL).

As far as the head gasket, Conetics (sp?) was supposed to make one for a 2mm overbore available through APE, but there was not enough demand so they didn't make it. So what I have to do is buy a stock one for a 929 and 'bore' it out to a 980. A little nervous about this, but the company that is doing the boring and plating has done this before with good results. I know I can have a custom head gasket made, but they need a template (stock gasket), and they can make a copper head gasket (heard bad things about leakage with copper) or they can make one from composite (single layer I think, still not as good as the two or three layer our stock gaskets have. I also can save myself a little more cash I don't have by just 'boring' out the stock gasket.
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post #7 of 140 Old 09-30-2003, 8:30 PM
 
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Re: 929cc to a 980cc

Keep us informed on the progress! Sounds like your having fun, so that's all that matters.

Rick
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post #8 of 140 Old 09-30-2003, 8:38 PM
 
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Re: 929cc to a 980cc

980 seems a little scary. *As I thought the rationale for the 954cc was the maximum honda was willing to bore a 929 and maintain required wall thickness or something like that. *Might get a little entertaining...

Keep us posted.



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post #9 of 140 Old 09-30-2003, 8:41 PM
 
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Re: 929cc to a 980cc

...and get video of the tuning

But seriously, good luck
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post #10 of 140 Old 09-30-2003, 9:13 PM
 
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Re: 929cc to a 980cc

Quote:
luvtolean : Interesting! *Keep us posted!

Dan and I boosted compression a bit on mine with no real result.
By decking the head?

Ride Red
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post #11 of 140 Old 09-30-2003, 9:33 PM
 
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Re: 929cc to a 980cc

Quote:
Crash : 980 seems a little scary. *As I thought the rationale for the 954cc was the maximum honda was willing to bore a 929 and maintain required wall thickness or something like that. *
...and willing to attach a 4 year warranty to. *You always got to think that way when a factory makes a decision. *Sounds like a cool project, keep us informed!

Mike

Edit: Whos doing your boring and plating? I've had good luck with Poeton Max Power and Milinium (SP?)



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post #12 of 140 Old 09-30-2003, 9:50 PM Thread Starter
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Re: 929cc to a 980cc

US Chrome. They are local to the Wisconsin area. Located about 100 miles north of me in Fond du Lac. They actually send it somewhere to be bored out and when they get it back they put the Nikasil plating on it.

Thanks for all of the good luck wishings. Hopefully I won't need it. I'll definately snap some photos of the work in progress.
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post #13 of 140 Old 10-01-2003, 1:15 AM
 
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Re: 929cc to a 980cc

What kind of results did you get from the polished head work? I just finished polishing my exhuast ports, and the valve job will be done shortly.
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post #14 of 140 Old 10-01-2003, 2:31 AM
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Re: 929cc to a 980cc

Might be some very interesting times ahead for you.
What kinda pwr are you making now?
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post #15 of 140 Old 10-01-2003, 3:44 AM
 
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Re: 929cc to a 980cc

It all sounds rather exciting, please do let us know the results and how rideable it is for everyday riding.

Do unto others, before some prick does it to you!

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