Front sprocket boss

  • johnnymoff
  • johnnymoff's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 54
  • Thanks: 0

Front sprocket boss

22 Dec 2015 19:52
#704014
Does the boss on the front sprocket go inboard (against the engine) or outboard? Does it even matter as long as I have good alignment between the front and rear sprockets?
Thanks
-John
Engine: 77 KZ1000 A1
Frame: 78 KZ1000 B2
Carb Type: VM 26 with accelerator pump.
Needle clip: 3rd (middle) position
Pod air filters
Main Jet 132.5
Idle Jet 20
Clip position on needle 3rd (middle)
Exhaust 4 into 1 Vance and Hines
PO says 1170 kit installed.

Please Log in or Create an account to join the conversation.

  • redhawk4
  • redhawk4's Avatar
  • Offline
  • User
  • User
    Registered
  • Posts: 640
  • Thanks: 64

Re: Front sprocket boss

22 Dec 2015 20:09
#704015
The boss on a KZ1000 goes on the inside. It wouldn't matter which way around it went as long as the sprockets align and there's enough clearance for the chain relative to the casings etc. From memory the boss is 1.5mm deep.
1978 KZ1000A2 Wiseco 1075 kit
1977 KZ650B1
1973 Triumph Tiger TR7V
1968 BSA Victor Special 441
2015 Triumph Thunderbird LT
1980 Suzuki SP400

Old enough to know better, still too young to care

Please Log in or Create an account to join the conversation.

  • johnnymoff
  • johnnymoff's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 54
  • Thanks: 0

Re: Front sprocket boss

28 Dec 2015 19:54
#704703
redhawk, you are right - the boss is about 1.5mm. I finally got around to looking at this again today.

It looks like I have clearance either way. I am in the middle of fitting new axle spacers on my GS swingarm swap and it looks like putting the boss to the inside will help me center the wheel so i'll probably go with that.

One thing I noticed is that the stamp indicating the number of sprocket teeth is on the same side as the boss and not visible when the boss is on the inside. While this is not a tragedy, I do wonder why this stamp is not on the other side so you can see it when the sprocket is mounted.

Thanks,
-John
Engine: 77 KZ1000 A1
Frame: 78 KZ1000 B2
Carb Type: VM 26 with accelerator pump.
Needle clip: 3rd (middle) position
Pod air filters
Main Jet 132.5
Idle Jet 20
Clip position on needle 3rd (middle)
Exhaust 4 into 1 Vance and Hines
PO says 1170 kit installed.

Please Log in or Create an account to join the conversation.

Moderators: Street Fighter LTD
Powered by Kunena Forum