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High cruise rpm, what do I have?

  • Thread starter Thread starter Guest
  • Start date Start date
What they said: it's completely normal, there's nothing wrong with your bike's revs at speed.
 
If you put a dot of grease or paint on your rear tire and then (while sitting on the bike) roll it out 2 or 3 revolutions and measure the distance travelled I can double check the calculations in that table. Different tires have different diameters so the rpm numbers may be somewhat off based on that.
 
Kwikrnu said:
If it was a 1000, the first character in the engine code should be a T as they only displaced 997 CC's correct?

And it was mistaken as to the displacement range for the U engine code. The range is 1000-1099 cc.

Salty Monk, are you speaking of the 1100 G in your signature? If yours was turning as fast as mine is did you ever have to go into the secondary? I was just wondering if maybe you verified gearing if you were in there. There's definitely something up that's not allowing my bike to align with this gear chart.
Click to expand...

My '83 1100G hits about 4000 rpm at 70 mph. I agree with you that it seems impossible to be that far off with a different final drive or anything like that. It must be speedo or tach error or something that's been swapped in from a different sized GS bike. I think Salty monk meant to say his "1000G" not 1100G.
 
Kwikrnu said:
I was pretty sure, but i just looked again. No markings on the cylinder. Had a few kz's that had them, but none here. The only numbets are on the case by the oil fill plug. U701- designates a 1000-1100 cc engine. Mine is supposed to displace 1074 cc, correct?
.
Click to expand...

You might want to look again. There is a little cutout in the fins at the very base of the cylinder in the front of one of the outside cylinders where the displacement is cast into the block.
 
I know my 11E has "1074" stamped on the front of the engine. I've also seen the 4 valve listed as 1075 cc.

But your two valve is a completely different motor, an enlarged version of the old "1000".
 
Hello, all
Just wanted to check in. Life got in the way for a couple of days but it's off to the garage tomorrow to check tach calibration. I'll get the rollout measurements then, too. And I looked AGAIN (gets tougher to get down there every year) and the front of #1 cylinder is marked 1074 cc.
 
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