Wheel and fork modification question

[IceFJ]

I wanted to get your opinion if you think this:
http://www.dba.dk/yamaha-fzr-600-aarg-1993/id-1006375285/
will be of any help for me for wheel and fork modification on my `86

I have got infected by Moditis  and I am looking to get me 17" rims for better and more modern tire selection and while at it I thought I might upgrade the front brakes and forks as well

[FJmonkey]

That depends on the fork length and upper tube diameter. Not sure if you can keep the speedo cable, might have to rig an alternate speedo system.

[IceFJ]

Do you know if anyone has gone down this route and fitted rims from FZR 600 and more importantly, if they are a direct fit or need some shimming/modifying?

[rktmanfj]

It's a 38mm damper rod fork... you should look elsewhere.    

The frame might make a good desk chair, though.

http://www.fjowners.com/index.php?topic=10936.0

[FJmonkey]

Do you know if anyone has gone down this route and fitted rims from FZR 600 and more importantly, if they are a direct fit or need some shimming/modifying?

If you are just looking for the wheel then check the axial diameter, the stock FJ has 15MM. If it is not 15MM then it will not be bolt on mod.

[nurse]

I fitted an XJR front wheel to mine all it needed was shim betweenthe FJ axle and the bearing.

Also needed a tiny nick taken out from the speedo drive casing thingy to allow the rotor bolts to pass without fouling it!

Easy peasy, lemon squeezey!

[the fan]

FZR600 wheel doesn't really get you anything. Its a 17" x 3" wheel similar to the FJ. Look for a 17x 3.5

[Country Joe]

Be very cautious when cruising Ebay when looking for parts. I have a YZF 600 wheel sitting in my shop right now. It is a 17x3.5" wheel with a 15 mm bearing bore. Sounds perfect until you discover that the brake rotors are about 1/4" too close together. Whoops.  At least it came with a nearly brand new tire and resurfaced brake rotors. I will keep those items and put the wheel back up on Fleabay. live and learn....

Joe

[Arnie]

Joe,

If the brake disks are 1/4" too close together but otherwise right diameter and thickness, couldn't you just put a 1/8" (3mm) spacer plate between the wheel and each disk?  Doesn't that put them in the right place ?

[Pat Conlon]

Yep, what Arnie suggested: Put some washers on the rotor bolts between the rotor and rim.

IIRC, the YZF600 used a 320mm rotor which is too big for the FJ forks, so the big question is: Will the 298mm FJ rotor bolt on the YZF rim?

Also, I'm surprised about the 15mm axle bore on the YZF rim, I thought they used a 17mm axle.

[rktmanfj]

I'm playing with the YZF600 Front wheel right now.

I'm thinking that I'd rather leave the discs alone, and space the calipers in a few mm.
It's what to do about the axle that has me scratching my head... is there enough room to bore and rethread the fork to 17mm?   

[Country Joe]

Pat,
I had considered doing that, but the width of the wheel bearings is also narrower than the FJ bearings by the same amount. I really need to ID this wheel before I try listing it. It has the smaller hub like the FJ wheel, not the larger hub with the 3 triangular windows on each side like the late model YZF  wheel.  I'm pretty sure it has 298 mm brake rotors, but I will check in the morning. I have a FZR 1000 wheel now, I will try to keep the swap simple. I'm all about simple........At least I think that's what my wife said........

[the fan]

Yep, what Arnie suggested: Put some washers on the rotor bolts between the rotor and rim.

IIRC, the YZF600 used a 320mm rotor which is too big for the FJ forks, so the big question is: Will the 298mm FJ rotor bolt on the YZF rim?

Also, I'm surprised about the 15mm axle bore on the YZF rim, I thought they used a 17mm axle.

Pat,

The YZF600 has 300mm rotors (act 298) for both generations of the bike. The early bike (94-96) used the same rotor as some of the later FJ. Pretty sure its the Non ABS only but I can check into it later.

[FJ111200]

It's what to do about the axle that has me scratching my head... is there enough room to bore and rethread the fork to 17mm?   

I've bored out the forks to take a 19mm XJR front axle and there is enough room for that with no problems.
I didn't re-thread the opposite fork just used 2 nuts locked together. No problem for the MOT.