Hello members,

I am in the process of building a 1983 CB1100F Super Sport resto-mod. The power plant is a rebuilt 1100F motor punched out to 1123 CC's with stock carbs. The "mod" part of the bike is the entire front end and front calipers from a '94 CBR600, along with a swingarm and rear caliper from a 2004 CBR600RR. CBR F2 wheels compliment the ride.

My question relates to the fork oil level. I can find nothing in the CBR service manual regarding how many CC's of fork oil to add to a rebuilt/dry system. The older bikes, like my CB900F, CB1100F's, etc. all call for "x" CC's of oil. Some of the newer bikes specify adding to a certain level with the springs removed and forks collapsed. Since these forks are very similar to the ones used on my '82 900F, I can see no reason why a set amount of oil per fork should do the trick. Any suggestions?

For those of you interested in this build, I'll be happy to post some pics once reassembly begins in the next 1-2 weeks.

Thanks!


Tom

 

According to the Clymer manual for the Honda CBR 600 F2, 91-93 508cc's (17.1 oz U.S.) of fork oil at a level of 118mm. For the 94 model, 460cc's (15.5 oz U.S.) of fork oil at a level of 135mm.

 

But I also looked on the RaceTech site and the levels they have list is a little different at 91-93 is 120mm & 94 model is 140mm. Either way, your go to go now.

 

Yes, we are interested in the build process. Yes we want to see pics. Me, personally, I love the CB 1100F. I've checked out the cb1100f.net site, awesome bikes. Especially Howard Abel's, it looks like 1100f but it might have 900 engine but its figgin awesome with all the modifications he did. Check it out, if you haven't already, you probably did.

 

Thanks for the great info. Funny that the Honda service manual doesn't list the fork oil volume, but Clymer's does.


I'm very active on the CB1100F.net forum and do a lot of powder coating for the members over there. We have a great group of members and it looks like you do here as well. You really need it if you want to keep these older bikes running.


As far as CB1100F's go, I have 3. One is a completely stock red/white one that I ride often and really enjoy. The resto-mod will be a real hoot when it's done this fall, and when that project is finished, I'll dig into the blue/white one that's in the restoration queue.


I'll post some pics soon so that you can all see how CBR parts have been resurrected from wrecks and put to good use on an old superbike.


Thanks again for the help!


Tom

 

If you wanted oversize front brake rotors for the F2 front end, Triumph Bonneville rotors are 310mm compared to the 276mm F2 rotors. And fabricate your own caliper relocation brackets. I bought the Ferodo 310mm kit from ebay used and then copied the brackets from flat stock aluminum & spaced them out with "custom chopper tank spacer bungs" from ebay. Havent got to try them out yet, since I'm a broke **** ****. But you could look at what I did on my FB. Frank Spatafore Monongah WV. Some pics are the Ferodo kit and the other pics are the Triumph Homemade Kit.

 

Hi, I just read this topic. I have a 94 f2 cbr600. This last model has a different fork from the older f2's I'm told.
Mine has a rod inside that is attached to the upper nut of the fork. I looked everywhere but can't find instructions on how to fill them up again and with how much fluid.
Do I need to unscrew the bolt in the bottom of the fork? I think not cause the oil will come out. So do I only need to remove the cap and the spring and leave the rest in place, even the rod inside? Then remove the oil and move the inside leg down and fill her up with new oil till 135 mm off the top? then spring back in etc.?

thanks for helping me out