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Trying to find drill guide for cam caps

  • sf4t7
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21 Mar 2024 21:26 #896729 by sf4t7
Trying to find drill guide for cam caps was created by sf4t7
referman - I'm going to heli-coil some cam bearing cap holes on my Z1 and want to find the drill guide you showed in a post from May of 2022.  Tried to find www.eastcoastadditive.com but no luck.  Anybody know a way to find one?

Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1
Superbike bars
530 conversion

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22 Mar 2024 01:28 #896732 by zed1015
Replied by zed1015 on topic Trying to find drill guide for cam caps
I know it's not answering you query but i've done hundreds of cam cap thread repairs and never needed a guide.
You just need a bench drill to ensure the holes are drilled square and then either use the chuck to start the tap straight or use a simple tapping block. 
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22 Mar 2024 05:45 #896743 by sf4t7
Replied by sf4t7 on topic Trying to find drill guide for cam caps
Thanks Rob.  Not the first time overthinking a job starts to turn it into a project !  

Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1
Superbike bars
530 conversion

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23 Mar 2024 09:34 #896781 by referman
Replied by referman on topic Trying to find drill guide for cam caps
Hi sf4t7, it looks like they are out of business and the last post on facebook was in 2022. The tool did make it easier but I've fixed may with out it.
1980 KZ1000 MKII
1075cc
Ported head
Mikuni Rs36
Cam Motion Z4
Falicon Crank

2022 Z900 RS 50TH Anniversary
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23 Mar 2024 17:21 #896801 by daveo
Replied by daveo on topic Trying to find drill guide for cam caps
Just a thought...could the cam cap potentially serve as a guide, while held in place with the other three bolts?

[img
1982 KZ1100-A2

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  • SWest
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23 Mar 2024 17:26 #896803 by SWest
Replied by SWest on topic Trying to find drill guide for cam caps
I've fixed many without drilling and with a 1/4" open end wrench. 
[img

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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23 Mar 2024 18:01 #896804 by Wookie58
Replied by Wookie58 on topic Trying to find drill guide for cam caps

Just a thought...could the cam cap potentially serve as a guide, while held in place with the other three bolts?

[img
Theoretically yes but there is a significant risk of removing material from the cap with the side of the drill bit which would render it scrap (the caps are matched to the head when line bored ) and possibly the whole head as a result unless you could find another cap which would fit without "nipping" the cam bearings or being too loose 
[img
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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24 Mar 2024 04:29 - 24 Mar 2024 04:38 #896818 by daveo
Replied by daveo on topic Trying to find drill guide for cam caps
Could wrap something around the the drill bit to help center it and prevent that.
And blunt he cutting edge of the drill bit in that area if it helps.

Necessity is still invention's mother, and sometimes the best solutions are stupid-simple.
 
1982 KZ1100-A2
Last edit: 24 Mar 2024 04:38 by daveo.
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24 Mar 2024 09:55 #896839 by Mikaw
Replied by Mikaw on topic Trying to find drill guide for cam caps
Random orphan caps are sold on evilly. Don’t use your matching one. Also one could install steel sleeves into the bore of the cap making it a nice jigs. Just my $.02
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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02 Apr 2024 09:02 #897163 by Injected
Replied by Injected on topic Trying to find drill guide for cam caps
Keep the dowels in while drilling/tapping, they help to keep it somewhat straight. I have done plenty with the engine in the frame by hand, never had one that did not assemble after.
 
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