Cam positioning for Andrews cams on a 76 kz650

  • Dirtyhands
  • Dirtyhands's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 85
  • Thanks: 1

Cam positioning for Andrews cams on a 76 kz650

09 May 2015 22:12
#671318
I was wrapping up shimming the valves on my new bike when I noticed the rubber pads on the intake camshaft's sprocket were missing and along with them the arrow I would use to align its position. These are Andrews cams. I don't know anything more about them but am adding pics of the markings on them and would love to know more. There is an etched line in the sprocket where I assume the arrow would be after comparing the lobe position to that on the stock camsin the manual. Any input on this would be greatly appreciated.
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters

Attachments:

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

  • Dirtyhands
  • Dirtyhands's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 85
  • Thanks: 1

Re: Cam positioning for Andrews cams on a 76 kz650

09 May 2015 22:23
#671320
I'm also curious about the slotted mounts on the sprockets. It appears by a couple indents that the intake one had be set a couple different ways. Should I set these to a more centered location or just let them be.
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters

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

  • Dirtyhands
  • Dirtyhands's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 85
  • Thanks: 1

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 00:09
#671329
After comparing quite a few pics of stock set ups to my intake cam I'm 99% sure that the etched line is where the arrow on the intake sprocket pad used to be. It is also clear that the previous owner probably removed the pads in order to machine the adjustable mounting slot. My question now is whether I should move the mounted position to a more centered stock position? I only started the bike once before checking the valves and it backfired like crazy. I'm wondering if the adjustable sprocket setting could be the issue.
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters

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

  • Nebr_Rex
  • Nebr_Rex's Avatar
  • Offline
  • User
  • User
    Registered
  • Posts: 1888
  • Thanks: 295

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 06:06
#671345
Have you ever degreed a camshaft before?


.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • Sustaining Member
    Registered
  • 10 22 2014
  • Posts: 23422
  • Thanks: 2912

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 06:17
#671346
Dirtyhands wrote: After comparing quite a few pics of stock set ups to my intake cam I'm 99% sure that the etched line is where the arrow on the intake sprocket pad used to be. It is also clear that the previous owner probably removed the pads in order to machine the adjustable mounting slot. My question now is whether I should move the mounted position to a more centered stock position? I only started the bike once before checking the valves and it backfired like crazy. I'm wondering if the adjustable sprocket setting could be the issue.

E-mail Andrews with your question. They were very helpful with my questions even though they don't make cams for KZ's anymore.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
The following user(s) said Thank You: Dirtyhands

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

  • Tyrell Corp
  • Tyrell Corp's Avatar
  • Offline
  • User
  • User
    Registered
  • "You were made as well as we could make you"
  • Posts: 1650
  • Thanks: 261

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 06:20
#671348
DH they are slotted cam sprockets, to allow for non standard cam timing, and/or to compensate for a skimmed head. Also it is unlikely the lobe centreline of a reground cam will be precisely where the standard cam was.

You need to look into dialing-in your cams. Don't fiddle with the settings for now, but you need to check they are right.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
The following user(s) said Thank You: Dirtyhands

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

  • KZB2 650
  • KZB2 650's Avatar
  • Offline
  • User
  • User
    Registered
  • Posts: 1475
  • Thanks: 265

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 06:37
#671352
If you remove the bolts be sure to blue Loctite em too ........ I remember 8 1/2 lbs of torque..... maybe 95 -100 inch lbs from my manual. Always wanted to degree the cams but didn't.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
The following user(s) said Thank You: Dirtyhands

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

  • Dirtyhands
  • Dirtyhands's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 85
  • Thanks: 1

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 09:34
#671369
I have never degreed a camshaft before but found this page online cavanaughracing.com/cam_degreeing.html If anyone knows of a better how to on this let me know. It seems like what I need to do. I won't move the settings till I know I need to.I'll also email Andrews the pics of the cam to find out more about it.
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • Sustaining Member
    Registered
  • 10 22 2014
  • Posts: 23422
  • Thanks: 2912

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 13:01
#671397
E-mail the pic of the stage 3 on the cams. On my chart from Andrews, stage 3 requires HP springs and machine work on the head to accept them. Might have already been done.
Steve

Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

Attachments:

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

  • Nebr_Rex
  • Nebr_Rex's Avatar
  • Offline
  • User
  • User
    Registered
  • Posts: 1888
  • Thanks: 295

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 13:46
#671404
Where did you get stage 3?
He's working on a 650 not a 900/1000.


.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • Sustaining Member
    Registered
  • 10 22 2014
  • Posts: 23422
  • Thanks: 2912

Re: Cam positioning for Andrews cams on a 76 kz650

10 May 2015 16:29
#671423
It was on the cam in one of his pics. I would like to see a pic of the end though. That's where they stamp them. The lobes look more aggressive than mine.
Steve
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

  • Dirtyhands
  • Dirtyhands's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 85
  • Thanks: 1

Re: Cam positioning for Andrews cams on a 76 kz650

11 May 2015 00:29
#671480
The Bike is a 650 that's been bored to a 738cc The only marks on the cam are the ones I posted in the pictures. There are the following stamps from left to right if it was sitting on the bike. K3 is stamped into the shaft after the first Lobe, Andrews and Chicago USA after the second, Stamped on the mount the sprocket bolts to is 4.2 and 7125 after that is D2 and C2 on opposite sides of the shaft just before the 3rd lobe and finally CWC and 1.5 on opposite sides of the shaft just before the final lobe. Hope this helps.
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters

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

Moderators: Street Fighter LTD
Powered by Kunena Forum