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  1. doc_rot

    1982 CB750F...Better Devil

    This^^^ I've installed brand new carb kits and had the needles stuck wide open. a couple quick raps with a screw driver and they seat and stop flowing.
  2. doc_rot

    1982 CB750F...Better Devil

    I don't know what the specs are for this bike but usually the float level is lightly lower than the top of the bowl. also you can polish the needle seat by putting a cue tip in a drill with some polish. seems to help when using old float needles
  3. doc_rot

    Make a slow bike fast - KZ750 Twin

  4. doc_rot

    Make a slow bike fast - KZ750 Twin

    I bored the new set of cases this weekend. Im now prepping the cases for paint. I was thinking black for the cases but part of me wants to paint them gold like the '83 Wayne Rainey GPZ. I got a bunch of colors from Gun Kote and sprayed them out. I'm not in love with any of them - still on the fence.
  5. doc_rot

    Make a slow bike fast - KZ750 Twin

    I spell it out in the first post. "In reality this project will mostly be an excuse for me to make cool shit and make poor financial decisions." Also I can't believe I'm explaining this to someone who put USD forks on a virago. What would you prefer? That I go buy a 2010 R6?
  6. doc_rot

    Dirtbag Oil-Boiler

    Got the seat pans wrapped up.
  7. doc_rot

    1982 CB750F...Better Devil

    I would start looking very carefully at the carb feeding the pot that is fouling, something is a miss there.
  8. doc_rot

    Dirtbag Oil-Boiler

    I looked and looked for a good deal on a clutch but I couldn't find anything. Couldn't find an 1100 clutch at all. Ebay has a couple used clutches for a B12 for $300-$400. I even looked at picking up a bike to part out. I ended up buying an NOS clutch basket and hub on ebay for $300. I took the...
  9. doc_rot

    1982 CB750F...Better Devil

    if a coil craps out its going to do it on two plugs at the same time. I would still suspect the carbs/fueling. what state are your carb boots in? high idle is indicitive of vacuum leak. how did the plug foul? is your bike charging properly?
  10. doc_rot

    Make a slow bike fast - KZ750 Twin

    thats awesome. ive seen this youtube video of a guy that bought that old race bike but never found any details on it.
  11. doc_rot

    saving a 1980 KZ750 twin

    Progress.... One of the shocks was leaking so I had them rebuilt, I guess this version of Works shocks used some type of proprietary tool to fill nitrogen so they had to be machined to accept a nitrogen valve. Before tear down I had this weird pulsing/chatter at low speed with the new EBC disk...
  12. doc_rot

    saving a 1980 KZ750 twin

    before/after
  13. doc_rot

    Make a slow bike fast - KZ750 Twin

    Because knew I was junking so much I literally just cut off the whole sub frame without dissembling. The black stuff on the ground in the picture of the frame all came out of the subframe, full of rust. lol. luckily I dont think the structure has been compromised by rust.
  14. doc_rot

    saving a 1980 KZ750 twin

    This project is pivoting. I have decided to build a track/race version with the big bore engine. I've started a build thread HERE if you are interested. As for this bike I will be building a nice, fairly stock engine. I had 3 spare engines lined up and I chose the best one from the bunch...
  15. doc_rot

    Make a slow bike fast - KZ750 Twin

    After talking to a guy in Canada about the KZ750 twin he races I have decided to build an all out track/race version of my own. I have been slowly accumulating parts for the engine and recently picked up a complete chassis for the build. Its the roughest bike I have ever bought. Literally...
  16. doc_rot

    Kawasaki Z650 Seventies Special

    fluid clutch conversion is nice.
  17. doc_rot

    CB360 Master Cylinder - 16mm piston too big?

    A higher end lever will not solve your problem if your hydraulic and mechanical leverage ratios are inadequate. I like Brembo master cylinders, their standard MCs arent too expensive and very high quality. I went back and re-read your post. I thought you had gold-wing brakes. if you have the...
  18. doc_rot

    CB360 Master Cylinder - 16mm piston too big?

    You can also determine if your MC is sized correctly by calculating the area of the MC piston (16mm) then dividing that by the area of the active caliper pistons. A good ratio for unopposed caliper pistons is around 1/13, opposing caliper pistons like to be around 1/27
  19. doc_rot

    CB360 Master Cylinder - 16mm piston too big?

    Those are the generic Chinese MC you see everywhere on eBay, Amazon etc. Ive used them they work ok, but quality is low. Adjustable MC are usually only available in top tier race parts. Compare the pivot offset to stock to see if that’s your issue.
  20. doc_rot

    CB360 Master Cylinder - 16mm piston too big?

    Another thing to consider on the MC is the ratio of lever length to lever pivot offset. This has a significant effect on the feel of the lever. Thats why race style MCs have adjustable pivot points to dial in the "feel" you can move from a 16m MC with 25mm pivot to a 16mm MC with 18mm offset...
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