900 RR fuel tank mod - 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 34 Old 05-02-2007, 4:10 PM Thread Starter
 
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900 RR fuel tank mod

Hello,
is there anybody with a 900RR (1993/1995) who's got a different fuel tank on their bike???
Anybody got a carbon / Keflar fuel tank?
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post #2 of 34 Old 05-02-2007, 11:01 PM
 
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Re: 900 RR fuel tank mod

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Originally Posted by Dunc View Post
Hello,
is there anybody with a 900RR (1993/1995) who's got a different fuel tank on their bike???
Anybody got a carbon / Keflar fuel tank?
I have a 95 with a 99 900RR tank on it.
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post #3 of 34 Old 05-02-2007, 11:04 PM
 
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Re: 900 RR fuel tank mod

There was a post a few months ago by a guy from Japan who has a carbon fiber fuel tank on his 900rr.
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post #4 of 34 Old 05-03-2007, 1:20 AM
 
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Re: 900 RR fuel tank mod

i have a 93 witha 98 900rr tank on it
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post #5 of 34 Old 05-03-2007, 1:47 AM Thread Starter
 
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Re: 900 RR fuel tank mod

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Originally Posted by griff1000 View Post
i have a 93 witha 98 900rr tank on it
Is the 98 tank different then the 93?
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post #6 of 34 Old 05-03-2007, 7:11 AM
 
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Re: 900 RR fuel tank mod

Only the front mounting point...
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post #7 of 34 Old 05-04-2007, 1:15 AM
 
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Re: 900 RR fuel tank mod

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Originally Posted by DarkStarCBR View Post
Only the front mounting point...

Bzzzzzzzzzzzzt.................... WRONG!!

Actually, the 96-99 tank has a completely revised profile and overall design, as well as a slightly different capacity.

The story is that too many 'little guys' complained to Honda that they couldn't fit on the bike - it was too big for them. So Honda revised the tank design. Overall, it's smaller, shorter and less 'bulbous'.
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post #8 of 34 Old 05-04-2007, 2:24 AM Thread Starter
 
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Re: 900 RR fuel tank mod

Quote:
Originally Posted by Sime View Post
Bzzzzzzzzzzzzt.................... WRONG!!

Actually, the 96-99 tank has a completely revised profile and overall design, as well as a slightly different capacity.

The story is that too many 'little guys' complained to Honda that they couldn't fit on the bike - it was too big for them. So Honda revised the tank design. Overall, it's smaller, shorter and less 'bulbous'.
thanks! Does the 96-99 tank fit nicely in a 93 bike still?
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post #9 of 34 Old 05-04-2007, 12:30 PM
 
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Re: 900 RR fuel tank mod

Dunc, it fits fine and looks great. It does require a small amount of fabrication (gotta make a small aluminium plate and drill/tap the frame - which is super easy), and you'll need to buy the mirror stay from the '96-'97 Fireblade.

Have a look at the '99 tank on my '95 945RR. The 93-95 frames were identical, so you can see how it looks:

http://i108.photobucket.com/albums/n...profile8x6.jpg
http://i108.photobucket.com/albums/n...ontside8x6.jpg
http://i108.photobucket.com/albums/n...ards/tank2.jpg
http://i108.photobucket.com/albums/n...hards/tank.jpg
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post #10 of 34 Old 05-04-2007, 2:36 PM Thread Starter
 
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Re: 900 RR fuel tank mod

wauw looks great Sime, less bulky!
Very nice bike too.
I was a bit scared it will leave a bit of a cap between the saddle and the tank because I thought the tank is bit shorter but it seems okay.
Thanks for the info and the pics.
Why do I need to make a small aluminium plate?
Dunc.
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post #11 of 34 Old 05-04-2007, 2:40 PM
 
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Re: 900 RR fuel tank mod

Quote:
Originally Posted by Sime View Post
Dunc, it fits fine and looks great. It does require a small amount of fabrication (gotta make a small aluminium plate and drill/tap the frame - which is super easy), and you'll need to buy the mirror stay from the '96-'97 Fireblade.

Have a look at the '99 tank on my '95 945RR. The 93-95 frames were identical, so you can see how it looks:

http://i108.photobucket.com/albums/n...profile8x6.jpg
http://i108.photobucket.com/albums/n...ontside8x6.jpg
http://i108.photobucket.com/albums/n...ards/tank2.jpg
http://i108.photobucket.com/albums/n...hards/tank.jpg

bro sime, can you please stop posting the photos of ur bike ? its getting me impatient and jealous.

anyway looking on the bright side, i've already found a nice pair of 954 forks. due to receive em next month. will keep u posted about the progress and shall i run into any problems, i'll call SOS (sime)

sorry a little offtopic.
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post #12 of 34 Old 05-04-2007, 5:33 PM
 
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Re: 900 RR fuel tank mod

The aluminum plate is for the front of the 96-99 gas tank. It is to adapt the two hole new tank mount to the one hole mount your frame currently has.

sime can probably give you the dimensions and where to drill and tap the holes for the plate adapter. You should be able to pick up a piece of aluminum from a hardware store, if not ask at an aluminum supply seller.
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post #13 of 34 Old 05-04-2007, 5:36 PM
 
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Re: 900 RR fuel tank mod

I may do this mod myself. If i had a tig welder at my disposal i would do a custom modified 98-99 tank... make it look something like this Beneli tank.

http://faimg1.forum-auto.com/mesimages/154739/Tnt.JPG

I couldn't resist using that particular image.
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post #14 of 34 Old 05-04-2007, 6:06 PM
 
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Re: 900 RR fuel tank mod

Quote:
Originally Posted by Sime View Post
Dunc, it fits fine and looks great. It does require a small amount of fabrication (gotta make a small aluminium plate and drill/tap the frame - which is super easy), and you'll need to buy the mirror stay from the '96-'97 Fireblade.

Have a look at the '99 tank on my '95 945RR. The 93-95 frames were identical, so you can see how it looks:

http://i108.photobucket.com/albums/n...profile8x6.jpg
http://i108.photobucket.com/albums/n...ontside8x6.jpg
http://i108.photobucket.com/albums/n...ards/tank2.jpg
http://i108.photobucket.com/albums/n...hards/tank.jpg
Have you taken your Targa mirrors off, or are these older pics?

Cheers
Simon
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post #15 of 34 Old 06-09-2007, 5:27 AM
 
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Re: 900 RR fuel tank mod

Hi guys. Sorry I've been away from this thread! I must have missed it.

Simon, they are older pics. I still do have the teardrop Targa mirrors on there.

Johan, I'm glad that you finally found some 954 forks! How is that coming along now?

To fit the 96-99 tank, I want to let you know that the mod you will do to your 93-95 frame will be irreversible!

Now let's get started...... you need to grind off the single post mount on the frame so that this section of the frame is completely flat. Then, take a flat piece of aluminum stock 5mm thick, by 1" wide x about 3.5" long. I don't know the exact length off the top of my head, but it is just a little bit narrower than the distance between the underside of the 96-99 front tank mount flange.

After sizing the plate, I used a Dremel sanding wheel to radius off the corners of the plate, then I used a lead pencil to mark the outline of the plate, making sure the plate was square and in line with the existing hole in the frame left over from the single hole mounting arrangement. I used the Dremel again to roughen up the underside of the plate, as well as the frame where the plate would go. I made sure the anodizing on the frame was removed in that part of the frame otherwise the JB Weld might not have adhered too well. But it is not critical as the bolts will tap through the plate and the frame which will lock it together. I erred on the safe side as I never wanted the plate to lift off!

I then used normal (not the 'Quik') JB-Weld to attach it to the frame, and waited overnight for it to dry. Next, I test fitted the tank (made sure the bottom mount under the seat was bolted in), put the mirror support and all the rubbers on too. When it was all centered, I used a metal punch to mark where the holes needed to be drilled. Removed all the hardware and drilled and tapped for an M6 thread. You have to take your time here to ensure that the hole is straight and perpendicular to the plate (don't just drill straight down from vertical!).

Test fitted it again including fitting the bolts till they were snug. Importantly, only use the factory steel bolts or equivalent stainless hex head bolts. Don't use those dressy anodized aluminum hex head bolts. They are not strong enough and will break off.

The next step is optional. When I was satisfied with the fit, I removed everything once more. I then took some JB Weld and with my fingertip, ran a bead around the plate and smoothed it into the frame. As I was powdercoating my frame, and JB Weld is fine for powdercoating, this made the plate look like it was a part of the headstem casting.

And there you have it. By the way, if you are going to retain your 93-95 gas petcock and fuel pump arrangement, you will also need to cut down the plastic fuel strainer. This is because the 96-99 tank is not as tall as the 93-95 tank. The strainer is a compression fit once you cut it down.

Pics attached:

http://i108.photobucket.com/albums/n...Tankmount1.jpg
http://i108.photobucket.com/albums/n...tankmount2.jpg
http://i108.photobucket.com/albums/n...tankmount3.jpg

Last edited by Sime; 06-09-2007 at 5:34 AM.
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