How to: YZF 600 rear wheel onto FJ

[simi_ed]

Does anyone have the original writeup of the details  on how to do this upgrade.  One of our 16" brethren is in need of the how-to (FJ Monkey).

[Yamifj1200]

Sure do,
http://www.btinternet.com/~fj1200mods/Project_FJ/YZFRear.htm

There ya go...

gettin ready to throw one under my 85 as well...

Eric M

[FJmonkey]

Thanks Ed, guess you avoided the multiple barrage (for now) of Q&A from my interest in the same upgrade you have. I guess I need to check into the the swing arm and find some deals to fit the budget. I know the new rear will not be quite right till I lose the stock shock (Penski $$$). I forgot to ask what size tire you can run with the YZF600 rear.

[the fan]

Here ya go Eric...

http://www.fjowners.com/index.php?topic=2511.0

sometimes I am good for something... just rarely at the same time.

[Yamifj1200]

Bill I was sharing this info with Ed. I did this mod years ago on my 91 then decided on a swingarm and rear wheel swap. I wish I hadnt sold all the modded 91 parts I had back then. I could have setup the 85 in days instead of weeks. Its all comming together for the 85 not as extensive as the 91 but it should be ok for now...
Thanks for the info ....

Eric M

[simi_ed]

Thanks Ed, guess you avoided the multiple barrage (for now) of Q&A from my interest in the same upgrade you have. I guess I need to check into the the swing arm and find some deals to fit the budget. I know the new rear will not be quite right till I lose the stock shock (Penski $$$). I forgot to ask what size tire you can run with the YZF600 rear.

I'm running a 170/60x17 Michelin Power Road.  I have about 7,500 miles on it, it will be done (worn out) by about 8,000 miles. Or 2 more Crest Runs!

Ed

[JCainFJ]

 If you have any questions send me a PM, I'll be glad to help.

[andyoutandabout]

fjmods09 | andyoutandabout


This might help...or not

[SILVERGOAT]

      For those of you who will take this with a grain of salt, here it goes. I installed a '95 YZF600R rear wheel on my '89 FJ1200 this year. In regards to having the sprocket carrier machined and the brake caliper support arm going to the swing arm, I did not have to do these mods. I used a JT's rear sprocket flipped over in the back. My chain alignment is straight as can be. No unusual noises and it spins freely. Second, I run a Bridgestone BT021 160/70R17. I have PLENTY of room on either side with out modifying the rear brake support arm. Make absolutely sure the caliper bracket is in mint condition. It took me two to get one that would not allow the rear brake to drag. As far as the machining, the rest of the specs are dead on. I know a lot of you guys are running a wider tire, but so far I have touched a peg on both sides with no ill effects. My bike feels very light on it's feet yet stable.
      I have the utmost respect for those who have done the FZ1 front and rear suspension swaps. Thanks again for all the inspiration and wisdom I have taken from this collection of great minds.

[JCainFJ]

 Photos please!!! I cant believe that the caliper mount didn't have to be moded. 8mm is a lot of aluminum!

[andyb]

Makes me wonder if the swingarm was a little bent, or is more flexible than I thought.

[SILVERGOAT]

    The aluminum caliper carrier WILL need to lose the 8mm from the outside, and make sure you have a machinist do it. The end thickness should be exactly 3/4" where the axle goes through. I was actually referring to the steel arm that stops the caliper from moving that goes from the caliper carrier to the front of the swing arm. I see where people have cut off one end and re welded it to create an offset. With the 600 rear wheel and a 160/70r17 tire, I have plenty of room with out doing that. I believe I could fit a 170 with no problem, just make sure the caliper carrier you use is perfect. If you do, the steel support arm will fall right into place.
     The 95 YZF600R uses a 17x5 wheel. As discussed before, different tire companies and models are actually slightly different in physical size. I chose my tire based on experience with this exact tire and I wanted as straight a side wall profile as possible as opposed to a wide tire on a too narrow rim which tends to "mushroom" causing a tendency to fall in to corners towards the last few degrees of lean angle.
      Different strokes for different folks I guess. Any way, I will try to post pictures, and again please consider the FZ1 rear shock mod. I have Racetech's worksheet. I am very happy with the out come, and would recommend it to anyone.

[JCainFJ]

 When I did the research to do the first YZF600 wheel swap back in 1998 I didn't mod the brake torque link for clearance.   I recommend the offset for strength issues. Those parts (the two bolts, the tabs on the caliper mount and the swingarm, and the link) are not going to work for very long if they are trying to twist every time you use the brake. You can do whatever you want. I recommend the offset on that brake link, it is important.

[SILVERGOAT]

   Not doubting the information. When I assembled everything, I payed particular attention to this. With my first attempt, not knowingly , I had a bad caliper carrier which caused all kinds of problems, severe dragging of the rear brake and the torque link did not even come close to lining up. I attributed this to the condition of the caliper carrier and the fact I milled the clearance myself with a drill press and hand file. I then acquired two more in as good as a condition as I could get. The one I am using is like new. I had a machinist mill it for me. After installing the second one, the assembly went together as if it were factory. My rear brake does not drag at all and I do not have any undo stress in any way that I can recall on my torque link, it swings down right onto the caliper carrier.
    I am in no way telling anyone else to do it differently, but learn from my mistakes. ALWAYS use the best quality parts you can find, in the long run it will save time and money. DON'T rush it! Mistakes will be made, try to keep them to a minimum. And when in doubt, log in to these guys and ask questions! Thanks. Jeff.

[chixson]

Hi all,
Has anyone doen the gsxr wheel mod on the 85-87 or is that one only good for the second generation? I only ask because from what I've read it allows for a 180 rear tire.
thanks
chris