Bike port

  • SWest
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17 Mar 2022 13:01 #863932 by SWest

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18 Mar 2022 01:29 - 18 Mar 2022 11:02 #863957 by daveo
Replied by daveo on topic Bike port
Steve, I would like your opinion on the color of my plugs...



This is with one-step colder spark plugs, and the RS34 flat slide carbs which will probably stay on the bike for a while.     

Have 27.5 pilot jets installed for the mid-40's to 60's air temps currently in W. Michigan.  Will probably drop to 25's when warmer weather arrives.

I'm going to attempt a short ride video with my cell phone camera if I can make that work.


1982 KZ1100-A2

Last edit: 18 Mar 2022 11:02 by daveo.

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18 Mar 2022 07:27 #863968 by SWest
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18 Mar 2022 07:33 #863969 by Mikaw
Replied by Mikaw on topic Bike port
My $.02. They look about as good as your going to get. Dry black full circle on the base ring. Nice tan color on the center ceramic. And a color change on the earth strap in the correct spot… Ride it like you stole it!

My only suggestion is to get a magnifying glass and look down inside at the bottom of the ceramic and look for shiny specs. It would indicate detention, if present it actually microscopic pieces of the piston getting exploded off. 

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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18 Mar 2022 07:39 #863970 by SWest
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Mine looked like that at first. The more miles I put on the new bores the better the plugs look.
Steve
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18 Mar 2022 10:28 #863984 by daveo
Replied by daveo on topic Bike port

My $.02. They look about as good as your going to get. Dry black full circle on the base ring. Nice tan color on the center ceramic. And a color change on the earth strap in the correct spot… Ride it like you stole it!

My only suggestion is to get a magnifying glass and look down inside at the bottom of the ceramic and look for shiny specs. It would indicate detention, if present it actually microscopic pieces of the piston getting exploded off. 

Didn't see that strap color with the standard hotter plugs...thank you zed1015 for the spark plug heat range recommendation.  

The ceramic had consistent color from top to bottom, with no aluminum specks visible way down in there.  While I was cleaning carbon off the pistons recently, I saw no evidence of detonation on those surfaces either.

Thanks again





 

1982 KZ1100-A2

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18 Mar 2022 11:13 - 18 Mar 2022 11:15 #863989 by Mikaw
Replied by Mikaw on topic Bike port
Chances are the heat range was to hot and the color on the earth strap was either not changing or it was right at the base ring. Either way you wouldn’t see it!

Here’s a good reference.

www.dragstuff.com/techarticles/how-to-read-plugs.html

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
Last edit: 18 Mar 2022 11:15 by Mikaw.
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19 Mar 2022 13:19 #864041 by SWest

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20 Mar 2022 11:27 #864087 by SWest
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I ordered a set of bearings last night. I'll use these to balance the tire then change them when they come. 
Steve

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20 Mar 2022 14:47 #864094 by SWest
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I should have the new bearings by Thursday. 
Steve

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20 Mar 2022 18:07 #864103 by Mikaw
Replied by Mikaw on topic Bike port
Is there a casting number on the crush drive. It looks similar to the one Mr E was looking for that fits a 77-78 rear spoke with disc

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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20 Mar 2022 19:00 #864108 by SWest
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If there is it's not legible. There was a ink number followed by a cast one but the ink came off when I tried to clean it. It is smaller that my Z1/KZ900 sprocket carrier.
Steve
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