Honda Motorcycles - FireBlades.org - Reply to Topic
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

Thread: 954 engine modifications Reply to Thread
Title:
Message:

Register Now



In order to be able to post messages on the Honda Motorcycles - FireBlades.org forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
06-18-2004 1:29 PM
TireSmoke
Re: 954 engine modifications

Quote:
Originally Posted by n0xiu1
From all that I have heard and experienced, international standards restrict top speed on motorcycles to 186 beginning in 2001. It may not be 186 mph but when the speedo reads 186 mph the ECU holds the motorcycle at that speed until you let off the gas. I had my 2001 GSXR 1000 indicating 186 mph a couple of times with around 500 to 1000 rpm to redline. Another friend has a 1999 busa that is unrestricted. His speedo tops out at 220 mph while the new busas speedo tops out at 185 or 190 mph.
As for the restriction... the case is that the manufacturers voluntarily cut the bikes off at 186. For a while, it was motorcycling's worst kept secret. There was never any law passed.

Also, IIRC, the 'Busa is restricted based on RPM and gearing, not what the speedo reads. I don't remember exactly for sure since I never got mine up that high.
06-17-2004 10:26 PM
risc32
Re: 954 engine modifications

Did someone say cake!!
06-16-2004 11:55 PM
CBRBob
Re: 954 engine modifications

I put the cams in a year ago. Above 8k it pulled like a bitch! Below it was a dog coming off a corner at anything other than full tilt. Over last winter I advanced the intake cam 3.5 deg. and now it pulls off the corners nicely with no loss of top end.
06-16-2004 11:06 PM
CBR929RE
Re: 954 engine modifications

Quote:
Originally Posted by risc32
Speaking of retarded, this is the most retarded thread i've ever seen here.

you're retarded, why don't you go drink some more beer
06-16-2004 10:36 PM
risc32
Re: 954 engine modifications

don't make me say it luvtolean.
06-15-2004 11:21 PM
luvtolean
Re: 954 engine modifications

Quote:
Originally Posted by risc32
Speaking of retarded, this is the most retarded thread i've ever seen here.
Why?



06-15-2004 10:38 PM
risc32
Re: 954 engine modifications

Speaking of retarded, this is the most retarded thread i've ever seen here.
06-15-2004 10:27 PM
FullForce
Re: 954 engine modifications

i wouldnt fool with those cams unless i was planning a tear down with other extensive mods, just doesnt seem worth the money or trouble for the power ...... another thing is i bet they will make good power on a motor that NEEDS more lift and longer valve duration but on a stock motor i bet it aint all that
06-15-2004 8:13 PM
CBR929RE
Re: 954 engine modifications

Quote:
Originally Posted by luvtolean
Those cams may or may not get you any HP. Dan Kyle has put Moriwaki cams in a bunch of 929's, including mine, and they normally are only worth a couple of HP at most, sometimes nothing. What they will do is make the bike pull real hard to the limiter.

The 929 doesn't have the second set of butterflies or any timing retard like the Gixxers so there isn't all that "free" stuff to do.
yeah I was actually thinking it didn't have the butterfly valves but I didn't say anything. the Erion website claims 6-8hp, I assume the lobe profiles and such are bigger creating more valve lift so more power is built with each piston stroke but bigger cams also move your power up the rpm range further and can move your redline if they are big enough. My friend has a 600something cam in ihs mustang and it doesn't start building power till 3000 I think not that it matter cause it revs so fast that it goes from idle (1000) to 3000 without much effort.
06-15-2004 8:06 PM
luvtolean
Re: 954 engine modifications

Those cams may or may not get you any HP. Dan Kyle has put Moriwaki cams in a bunch of 929's, including mine, and they normally are only worth a couple of HP at most, sometimes nothing. What they will do is make the bike pull real hard to the limiter.

The 929 doesn't have the second set of butterflies or any timing retard like the Gixxers so there isn't all that "free" stuff to do.



06-15-2004 7:48 PM
n0xiu1
Re: 954 engine modifications

Quote:
Originally Posted by CBR929RE
Erion claims 6-8hp gains with them, they come in street or track version. if you do that while you're at it throw in the titanium valve retainers and the racing pistons and all the other stuff they have. all that and a custom map for a pc3 and you should be at or above the new 1000s.
I'll have to look into the Erion options. Thanks for the information.
06-15-2004 7:47 PM
n0xiu1
Re: 954 engine modifications

Quote:
Originally Posted by CBR929RE
I didn't know they had restrictors on them (I heard the busa does but nothing about any other bike having one). I'm not sure where you are but the May issue of Motorcyclist says the gixxer1000 tops out at 180 on the radar gun, the zx10r was the fastest of the 4 liter bikes at 186 followed by the R1 at 184 and the 1000rr at 175 (the honda's wet weight is the highest so that slows it down some, I sat on one the other day and it felt so much heavier then my 929 I was like what the hell)

As far as the butterfly thing I was just going by what I've read about them smoothing power and stuff, I'm no mechanic either. if you find out what exactly was done I'd like to know, I'm always looking for knowledge on how stuff is done.
From all that I have heard and experienced, international standards restrict top speed on motorcycles to 186 beginning in 2001. It may not be 186 mph but when the speedo reads 186 mph the ECU holds the motorcycle at that speed until you let off the gas. I had my 2001 GSXR 1000 indicating 186 mph a couple of times with around 500 to 1000 rpm to redline. Another friend has a 1999 busa that is unrestricted. His speedo tops out at 220 mph while the new busas speedo tops out at 185 or 190 mph.
06-15-2004 1:52 PM
CBR929RE
Re: 954 engine modifications

Quote:
Originally Posted by n0xiu1
I would consider a cam change.
Erion claims 6-8hp gains with them, they come in street or track version. if you do that while you're at it throw in the titanium valve retainers and the racing pistons and all the other stuff they have. all that and a custom map for a pc3 and you should be at or above the new 1000s.
06-15-2004 1:49 PM
CBR929RE
Re: 954 engine modifications

Quote:
Originally Posted by n0xiu1
I'm not exactly sure about the butterflies. I want to say it was the secondary butterfiles, but I could be mistaken. A guy I ride with from time to time said he made some kind of modification to the secondaries and saw a slight gain in power. His GSXR hauls a$$. I'm no machanic by any means, but I want to get in to this more.

The TRE is a timing retarder that plugs into the bikes computer. The guy I ride with has a TRE on his GSXR 1000. It also bypasses the 186 restriction. He hit redline on his 1000 in sixth. I think the ARE is an advanced timing retarder. I think it allows you to make timing adjustments. Another guy I ride with has a busa with the ARE. For a bike without a turbo or nitrous, it is stupid fast.

I would consider a cam change.
I didn't know they had restrictors on them (I heard the busa does but nothing about any other bike having one). I'm not sure where you are but the May issue of Motorcyclist says the gixxer1000 tops out at 180 on the radar gun, the zx10r was the fastest of the 4 liter bikes at 186 followed by the R1 at 184 and the 1000rr at 175 (the honda's wet weight is the highest so that slows it down some, I sat on one the other day and it felt so much heavier then my 929 I was like what the hell)

As far as the butterfly thing I was just going by what I've read about them smoothing power and stuff, I'm no mechanic either. if you find out what exactly was done I'd like to know, I'm always looking for knowledge on how stuff is done.
06-14-2004 10:37 PM
n0xiu1
Re: 954 engine modifications

I'm not exactly sure about the butterflies. I want to say it was the secondary butterfiles, but I could be mistaken. A guy I ride with from time to time said he made some kind of modification to the secondaries and saw a slight gain in power. His GSXR hauls a$$. I'm no machanic by any means, but I want to get in to this more.

The TRE is a timing retarder that plugs into the bikes computer. The guy I ride with has a TRE on his GSXR 1000. It also bypasses the 186 restriction. He hit redline on his 1000 in sixth. I think the ARE is an advanced timing retarder. I think it allows you to make timing adjustments. Another guy I ride with has a busa with the ARE. For a bike without a turbo or nitrous, it is stupid fast.

I would consider a cam change.
This thread has more than 15 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome