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sprocket ratio asssistance 06 Sep 2021 13:57 #854920

  • TexasKZ
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Did you check for proper clearance between the new bearings and the cam journals?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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sprocket ratio asssistance 06 Sep 2021 15:11 #854928

  • Southpaw
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No I did not....

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sprocket ratio asssistance 06 Sep 2021 15:46 #854930

  • Injected
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You never mentioned if this bike was air shifted, if it has a slick or bar, what RPM your leaving at - These all make a difference at the finish line. As far as the original question I believe most guys are running a 15/36 combo (that's how mine is geared)

Also it sounds like your not hitting it hard enough off the line.

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sprocket ratio asssistance 06 Sep 2021 17:09 #854933

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1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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sprocket ratio asssistance 06 Sep 2021 18:22 #854940

  • urankjj
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If you are hitting the traps @ 97mp, but the bike is still pulling then something is missing. Air box or pods ?... main jet size ?... petcock delivery ?... rider in excess of 300 lb's -(just kidding).  Good Luck to you.....

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sprocket ratio asssistance 07 Sep 2021 07:44 #854954

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HEY,  i,m not an ounce over 270 lbs.!! LOL

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sprocket ratio asssistance 07 Sep 2021 07:47 #854955

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Yes air shift, slick and bar. Im still learning to launch the bike i am not leave hard at all, which im sure are all factors. Now the engine is back out i believe my biggest problem right now is missing horsepower, gotta get that corrected first.

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sprocket ratio asssistance 07 Sep 2021 08:23 #854956

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If you have a slick and bar setup there should be no issue launching at 6K or above, with a small motor you want to keep the RPMs up there.

You said it was a purpose built bike but no mention of a lockup clutch?

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sprocket ratio asssistance 12 Sep 2021 15:26 #855182

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No lock up clutch. Sent the head to FBG for valve job. #3 cylinder was down to 90 psi. Found my horsepower loss. Hopefully back to the track by mid October.

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sprocket ratio asssistance 12 Sep 2021 18:22 #855192

  • Mikaw
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No lock up clutch. Sent the head to FBG for valve job. #3 cylinder was down to 90 psi. Found my horsepower loss. Hopefully back to the track by mid October.

What did you figure out with cam bearings?
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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sprocket ratio asssistance 13 Sep 2021 02:22 #855201

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Well the cam bearings. Seems i have two different manufacturers of the bearing mixed together. There is a definite difference in the quality of the bearings. As i recall i had to buy from two different places to get a full set of bearing. Knowing what i know now i would have left the originals in the engine, guess its all part of the learning experience. Best you can do is learn from your mistakes and move forward, I am definitely going to check the clearances when the head gets back from FBG.
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