[AJD] GP valve guide problems

[greg at theoldtractorcompany.com]

In my experience, valve stems are not usually the culprit on a GP, the guides normally take the 
wear. We make the valve guides as I sometime in the far, far distant future plan on restoring 
my GP's and Widetreads so thought I ought to have them available. I do sell quite a few valves 
and a lesser amount of guides but the valves are either worn down or rusted so replacement is 
necessary.

Also make the springs, valve caps, and keepers. 
End of this promotional message................
Greg


Greg Stephen
The Old Tractor Company
Stephen Equipment Company
PO Box 709
Franktown, CO 80116
303-663-5246
303-468-0377 FAX<<--GREAT WAY TO REACH ME!

On Wed Jul 13 20:54 , 'Dee Schuyler' <web22hsz at verizon.net> sent:

>John
>As no one else has responded , let me put in my two cents worth. The fellas 
>that have dealt with this I would imagine
>are the Ostranders , Paul & Michael but I bet they are very busy with the 
>Show Schedule.
>With my GP I was fortunate in that the engine was fine in the compression & 
>valve dept,
>Now when you have a problem  with the finals and brakes
>I may be able to help more! That said, I do not quite understand your 
>machine shops  inability to get the block under the milling machine? I have 
>a old Bridgeport J head
>and I will bet the block would have plenty of room? Unless I am clear out in 
>left field?
>First thing I would check is where is the slop? Again most of my experience 
>is with D tractors , but D valves are notorious
>for the stem to be worn bad. But if it is indeed just guide wear I would 
>think most any competent shop could press them out, and if new ones are not 
>available , they are a simple lathe & mill project.
>You might be ahead to get a second shop opinion?
>Dee
>----- Original Message ----- 
>From: "John Boehm" rustyacres at yahoo.com>
>To: "Antique John Deere" antique-johndeere at lists.antique-tractor.com>
>Sent: Wednesday, July 13, 2005 7:34 AM
>Subject: [AJD] GP valve guide problems
>
>
>> My first "restoration" 25 years ago was a GPO, #15008.
>> A lot of things were not done correctly, both
>> cosmetically and mechanically. I am now redoing it and
>> trying to do things  right.
>>
>> One of my problems is very worn valve guides that are
>> allowing a lot of carbon buildup. I need to either
>> replace or rebush the guides. I see that new guides
>> are not available from Deere. Are they available
>> anywhere else? If I were able to find new guides,  how
>> would I proceed to remove the old ones?
>>
>> My current thought is to take the block to our local
>> machine shop to have them put bushings in the existing
>> guides, then machine them to fit the valve stems. Any
>> opinions on this approach? The machine shop was not
>> sure if they could get the block properly in place on
>> their equipment to align and bore the guides. Any
>> opinions appreciated!
>>
>> John Boehm
>> Woodland, CA
>> Visit my web site at http://vintagetractors.com
>> _______________________________________________
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>> http://www.antique-tractor.com/mailman/listinfo/antique-johndeere
>> 
>
>
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