It runs!!!! BUT!

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01 May 2015 06:33 #670255 by SWest
Replied by SWest on topic STILL NEED HELP! WONT START!

bromz wrote: Fine. The rings were full of debri. Don't know what happened. So while it's apart I'm gonna lap valves new gaskets again! And new rings. Anything else? I can't believe all the rings were stuck. Damn!! I'm gonna hone the cylinders lightly just so the new rings will seat.


A light hone won't buy you anything. Check the piston/wall clearance, top middle and bottom. If still good, use a coarse hone for a good cross hatch. You want them to seat immediately. Lube the pistons and walls.
Make sure everything is correct before trying to start it again. I suspect you overheated the rings by trying to start it for so long.
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

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01 May 2015 13:56 #670318 by bromz
Replied by bromz on topic Re:STILL NEED HELP! WONT START!
Got the cylinders honed. Turned out nice. Still had a couple verticals lines but nothing I could fell with my fingers

Attachment ImageUploadedByTapatalk1430513234.561190.jpg not found


Gonna try to lap the valves tonight. Have rings and gaskets on the way.
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01 May 2015 16:53 #670337 by SWest
Replied by SWest on topic Re:STILL NEED HELP! WONT START!
What is the clearances? That looks too light. I did mine on purpose because I plan on putting my 10.25/1 pistons back in as soon as I get one more. I'm burning a small amount of oil. I will give it a course hone then. I didn't want to take out material this time around and the rings are used.
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

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02 May 2015 10:41 #670384 by bromz
Replied by bromz on topic Re:STILL NEED HELP! WONT START!

Attachment ImageUploadedByTapatalk1430587893.560880.jpg not found


Helicoiled a couple of cam cap bolts. Man worked nicely! Swest the cylinders appear a little glazed cause I put a thin film of oil on them so they wouldn't rust by next week when the rings get here.
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02 May 2015 20:39 #670462 by bromz
Replied by bromz on topic Re:STILL NEED HELP! WONT START!

Attachment ImageUploadedByTapatalk1430623807.408452.jpg not found


Lapped valves tonight. I think they turned out ok. They aren't perfect but I think they will be fine.
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02 May 2015 20:43 #670463 by SWest
Replied by SWest on topic Re:STILL NEED HELP! WONT START!
The seat looks a little big. They will work. Can you measure them?
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

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02 May 2015 20:46 - 02 May 2015 20:49 #670465 by bromz
Replied by bromz on topic STILL NEED HELP! WONT START!
With my cheap plastic caliper I think they are slightly over 1 mm not closer to 1.5 mm. What would you use to clean the grooves out of my pistons? I'm thinking some sort of oil and a tooth brush. Just want to make sure they are clean and clear before the new rings
Last edit: 02 May 2015 20:49 by bromz.

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02 May 2015 20:52 #670467 by SWest
Replied by SWest on topic STILL NEED HELP! WONT START!
Yeah, I was looking at it and the seating area is pretty high on the valve. That should mean the shims could be in the high end say 250-280? That would great.
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

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02 May 2015 20:59 #670468 by bromz
Replied by bromz on topic Re:STILL NEED HELP! WONT START!
Hope your right. I will re measure once I reassemble. Waiting for rings and gaskets. Most right now are between 280 and 265

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02 May 2015 21:46 #670470 by SWest
Replied by SWest on topic Re:STILL NEED HELP! WONT START!
That's good news. No uneven lines? This time if it won't start with starting fluid, It's got to be electrical.
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

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03 May 2015 06:10 #670480 by bromz
Replied by bromz on topic Re:STILL NEED HELP! WONT START!
No lines were all nice. With 4 stuck pistons rings and lapping these valve I should achieve what compression I need for it to run

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03 May 2015 06:14 #670482 by SWest
Replied by SWest on topic Re:STILL NEED HELP! WONT START!
B)
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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