J engine ring end gap
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
02 Aug 2018 16:25
Still tuning. About 40 miles now. But smoke out the breather is the same. I'll send a pic this weekend. Definitely not normal.
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Please Log in or Create an account to join the conversation.
- SWest
-
- Offline
- Sustaining Member
-
Registered
- 10 22 2014
- Posts: 23433
- Thanks: 2915
Re: J engine ring end gap
02 Aug 2018 16:57
Keep an eye on the oil.
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
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.
- daveo
-
- Offline
- Premium Member
-
Registered
- Posts: 2932
- Thanks: 755
Re: J engine ring end gap
02 Aug 2018 20:56VTEC wrote: Still tuning. About 40 miles now. But smoke out the breather is the same. I'll send a pic this weekend. Definitely not normal.
Please post a short video if possible.
1982 KZ1100-A2
Please Log in or Create an account to join the conversation.
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
04 Aug 2018 17:30
Gonna run it again tomorrow. Carbs look pretty close and I'm focusing on ignition timing.
I'm using Dyna 2000 and static timed at 35 btdc to be safe. Ran it with the timing light last week and the mark was jumping all over the place at idle, smoothed out but still a little jumpy at max advance at 3500 rpm. I've heard stories of erectic readings powering the timing light from the bike battery, but never had that problem with my snap-on light on a car? Got an independent battery to try tomorrow. Dyna says best curve for a 2 valve engine is max at 6500. I started with that and now trying max at 3500 which they say is best four 4 valve engines.
If I still have the marks bouncing around with a remote battery, I guess there's some other problem to look at.
I'm using Dyna 2000 and static timed at 35 btdc to be safe. Ran it with the timing light last week and the mark was jumping all over the place at idle, smoothed out but still a little jumpy at max advance at 3500 rpm. I've heard stories of erectic readings powering the timing light from the bike battery, but never had that problem with my snap-on light on a car? Got an independent battery to try tomorrow. Dyna says best curve for a 2 valve engine is max at 6500. I started with that and now trying max at 3500 which they say is best four 4 valve engines.
If I still have the marks bouncing around with a remote battery, I guess there's some other problem to look at.
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Please Log in or Create an account to join the conversation.
- SWest
-
- Offline
- Sustaining Member
-
Registered
- 10 22 2014
- Posts: 23433
- Thanks: 2915
Re: J engine ring end gap
04 Aug 2018 17:53
Spark advance?
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
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.
- Nessism
-
- Offline
- Sustaining Member
-
Registered
- Posts: 7770
- Thanks: 3156
Re: J engine ring end gap
04 Aug 2018 18:11
You removed the stock mechanical spark advance mechanism right?
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Please Log in or Create an account to join the conversation.
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
04 Aug 2018 18:36 - 04 Aug 2018 18:40Nessism wrote: You removed the stock mechanical spark advance mechanism right?
Yes, Dyna 2000 kit. Advance controlled by the ECU. At a steady idle you can't read the mark. Jumps around by a least 5 degrees either way. Should read total advance minus 25 degrees at idle. About 10 degrees.
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Last edit: 04 Aug 2018 18:40 by VTEC.
Please Log in or Create an account to join the conversation.
- daveo
-
- Offline
- Premium Member
-
Registered
- Posts: 2932
- Thanks: 755
Re: J engine ring end gap
04 Aug 2018 21:18 - 05 Aug 2018 05:46VTEC wrote:Nessism wrote: You removed the stock mechanical spark advance mechanism right?
Yes, Dyna 2000 kit. Advance controlled by the ECU. At a steady idle you can't read the mark. Jumps around by a least 5 degrees either way. Should read total advance minus 25 degrees at idle. About 10 degrees.
I used a timing light to set the advance 40 degrees at 4000 rpms.

1982 KZ1100-A2
Attachments:
Last edit: 05 Aug 2018 05:46 by daveo.
Please Log in or Create an account to join the conversation.
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
05 Aug 2018 07:00daveo wrote:
I used a timing light to set the advance 40 degrees at 4000 rpms.
With what system?
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Please Log in or Create an account to join the conversation.
- daveo
-
- Offline
- Premium Member
-
Registered
- Posts: 2932
- Thanks: 755
Re: J engine ring end gap
05 Aug 2018 10:59 - 05 Aug 2018 11:07VTEC wrote:daveo wrote:
I used a timing light to set the advance 40 degrees at 4000 rpms.
With what system?
Installed the Dynatek 2000 ignition with DC1-2 Mini-Coils in 2012. Had previously set to 38 degrees +/- based on Dynatek suggestion until I tried 40 last year per the Kawasaki engine ignition spec in the KZ1100 service manual. Stock spec is 10 degrees at 1,000 rpm to 40 degrees at 3,400 rpm.

1982 KZ1100-A2
Attachments:
Last edit: 05 Aug 2018 11:07 by daveo.
Please Log in or Create an account to join the conversation.
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
05 Aug 2018 11:10
Have you looked at the setting with a timing light? If so, was it erratic?
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Please Log in or Create an account to join the conversation.
- VTEC
-
Topic Author
- Offline
- User
-
Registered
- Posts: 558
- Thanks: 80
Re: J engine ring end gap
05 Aug 2018 11:54 - 05 Aug 2018 11:57
Check out this animation I found.
www.cyclexchange.net/index%20pics/Sensor2.gif
at this site:
www.cyclexchange.net/IGNITIONS%20HONDA.htm
This is what I'm seeing.
This is what I'm seeing.
KZ1000-K2
ZRX1100
XR400R
ZRX1100
XR400R
Last edit: 05 Aug 2018 11:57 by VTEC.
Please Log in or Create an account to join the conversation.
Moderators: Street Fighter LTD