Author Topic: Measure chain stretch  (Read 13837 times)

0 Members and 16 Guests are viewing this topic.

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 15,009
  • CB500 Number 1000036
Re: Measure chain stretch
« Reply #25 on: January 06, 2026, 12:04:57 AM »
With all this talking about length it is far easier to remove it and see how much it bends sidways, that is both sets of sideplates on the floor and see how much "curve" you can get in it
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline MauiK3

  • A K3 is saved
  • Really Old Timer ...
  • *******
  • Posts: 5,282
  • Old guy
Re: Measure chain stretch
« Reply #26 on: January 06, 2026, 06:40:30 AM »
Would be interesting to see side movement of an old and new chain side by side, the difference would be easy to spot.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 16,508
  • Bike almost back to the 70's 2015
Re: Measure chain stretch
« Reply #27 on: January 06, 2026, 07:29:11 AM »
Or the easier way as mentioned earlier, lift change a bit off rear sprocket if possible.
Sideways wiggle can be checked when verifying correct slack.

A riveted chain will be opened when replacing it, not before ;D
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967