[AJD] can I use the 820 exaust valve in my D?

[Duane Larson]

Frank,
I believe this question has been answered by Kevin.
Regards,
Duane

----- Original Message ----- 
From: "Frank" <gremaux at tein.net>
To: "Antique John Deere mailing list"
<antique-johndeere at lists.antique-tractor.com>
Sent: Thursday, December 23, 2004 11:06 PM
Subject: Re: [AJD] can I use the 820 exaust valve in my D?


> ok Duane I'll bite............
> how does that compare to the D valve?
>
> Frank
> gremaux at tein.net
> Central Montana
> http://www.angelfire.com/mt/deeregp/index.html
> ----- Original Message ----- 
> From: "Duane Larson" <jdlarson at comcast.net>
> To: "Antique John Deere mailing list"
> <antique-johndeere at lists.antique-tractor.com>
> Sent: Thursday, December 23, 2004 8:39 PM
> Subject: Re: [AJD] can I use the 820 exaust valve in my D?
>
>
> > Kevin,
> > The 820 valves have the following properties as given in Field Service
> > Bulletin 259 (11/56):
> > property    intake    exhaust
> > angle        44.5 deg    44.5 deg
> > length        8.281"        8.250"    to top of face
> > dia            2.600"        2.070"
> > stem        0.496 - 0.497"   (both)
> > Duane Larson
> >
> > ----- Original Message ----- 
> > From: "Kropelin" <kropelin at netonecom.net>
> > To: <antique-johndeere at lists.antique-tractor.com>
> > Sent: Thursday, December 23, 2004 7:13 PM
> > Subject: [AJD] can I use the 820 exaust valve in my D?
> >
> >
> > Not long ago a few posts had talked about being able to use the 820
> > exhaust
> > valves with a little bit of machine work.
> >
> > As I am rebuilding a 1931 unstyled D and have just removed the head to
> > clean
> > out the years accumulation of grass,mouse nests,grain storage and wasp
> > nests
> > I have gotten the valves out and of course they need to be replaced.
> >
> > As you already know they are a little salty, and like most I really do
not
> > want to make John Deere Co. rich but I want to do a proper job.
> >
> > My question is does anyone have the physical dimensions of the valve for
> > the
> > 820 as far as diameter of the stem and the head diameter? I will assume
> > that
> > the length is longer which will allow for the relocating of the keeper
> > slot!
> >
> > I went over to my local Deere Dealer and all they could tell me was that
I
> > can still buy them but they had no tech info.
> >
> > I thought that this was a little funny as they do repair tractors in
> > house.
> > What I need is the tech specs of both of the valves to make a
> > determination
> > of which way to go outside of having them order a valve in for me to
look
> > at
> >
> >
> > If the head diameter is the same and the stem diameter is the same and
the
> > overall length will allow me to machine a new keeper slot in the proper
> > place, then the 820 valve which is half the cost of the original style
> > valve
> > would be the way to go.
> >
> > Any advise on this will be greatly appreciated.
> >
> > Kevin Kropelin(krop8913)
> >
> > over here in the cold southwest corner of Michigan
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>
>
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