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valve guide installation

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tractorboy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tractorboy Quote  Post ReplyReply Direct Link To This Post Topic: valve guide installation
    Posted: 05 Nov 2023 at 4:24pm
Getting ready to install new valve guides in son's D10 III, rebuild. The new ones from reliance, seem to be knurled at one end. My question is,  is that the end that's at the top ??  Also has a line bout 3/4 ''  toward one end, I guess that's for depth but thought I'd follow the manual, says use straight edge & make them even with valve cover mating surface. Any help appreciated, keith so. va.
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PaulB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 06 Nov 2023 at 6:51am
I've made a bushing the correct length that will only allow them to press in to the correct height.  
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tractorboy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tractorboy Quote  Post ReplyReply Direct Link To This Post Posted: 06 Nov 2023 at 11:12am
Knurled end at the top???
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PaulB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2023 at 6:24am
The Knurling would go into the head. That's what holds them in place as they are most likely made in China somewhere and they didn't convert inches to MM correctly. The OEM guides are the correct size and smooth from end to end.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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tractorboy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tractorboy Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2023 at 5:33pm
The knurled part is on the INSIDE of the valve guide, still want to know if that end goes up???
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Lynn Marshall View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2023 at 9:40pm
In my  opinion, yes.
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DiyDave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2023 at 4:04am
I would assume that it goes in knurled side to the inside. you may want to search the internet using more specific terms that I did. I entered "installation of knurled valve guides" into YT and one of the first videos to come up was this:

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Les Kerf View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 08 Nov 2023 at 8:18am
Yikes! Brand new valve guides that are already knurled?!? Thumbs Down
Knurling valve guides was a common way to get a bit more life out of a worn-out engine when parts were expensive and labor was cheap back in the bad old days and everyone was happy if a car engine went 60,000 miles.

Perhaps I am missing something or I am merely confused Confused
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 09 Nov 2023 at 11:24pm
I'll second Les on this... knurling on the INSIDE is done as a temp fix for wear.

if it's on something from China, I'll bet that what they did, was pull out guides from an old head, and copy them... knurling and all...
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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wjohn View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wjohn Quote  Post ReplyReply Direct Link To This Post Posted: 09 Nov 2023 at 11:58pm
The AGCO valve guides I bought for my WD had spiral marks inside of them - I presume for oil control, with no seals?

The old ones I took out also had them.
1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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