[AT] 1935 JD B Testing progress.

[Dean VP]

Cecil/Stcve,

I spent a portion of the day trying to find a machine shop to do the work on
my JD B head. Doing really well..... Not a single person/company has called
back.  Not the way I wanted to start the day.

Dean VP
Apache Junction, AZ

-----Original Message-----
From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of Steve W.
Sent: Monday, November 30, 2020 8:03 PM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: Re: [AT] 1935 JD B Testing progress.

Cecil Bearden wrote:
> The way those work is ther is a reamer/knurler you run through the 
> guide, then  insert the sleeve, then run a burnisher/expander through.
> I have a bit for an air hammer that drives the burnisher.   I first 
> started using a hammer.  I get a lot of flack from the "professional 
> Engine rebuilders" about these only being 0.030 thick.  A 0.010 wear 
> on a guide will create a bad seal on a valve, so when the guides are 
> worn
> 0.010 or 0.015 they are shot.. Just my $0.02.......  I have had some 
> of my small block chevy rebuilds go over 200K miles.  I also have used 
> these on old continental engines and they have outlasted the machine
> they were on...   My Dad one time said it was ridiculous for us to buy a 
> rebuilt short block when we always had to rebuild them before 
> installation or soon after..    I had a replacement engine from Pep Boys 
> that had a lifter come apart (350 chev. )  on the way to Chicago from 
> OK.    Pep Boys agreed to give me a new short block. Mainly because I 
> had worked with the ass't mgr years prior.  I opened up the new engine 
> and had to replace the lifters, valves, timing chain and gears, and bore
> the guide and line them.   They reground the lifters, valves, and 
> re-used timing chains and gears.  They had installed an oversize valve 
> guide after grinding the valve stem.  Lifters and valves are case
hardened..
> 
> This is the reason I will not buy a rebuilt engine..
> 
> Cecil
> 

I have a similar setup in the old tools box, one is only the knurler set up
while the other has the option to do bronze liners. Someplace I still have a
set to do small engines as well, back when you could still get the parts for
them !!
Even have a piston knurler in there someplace.

--
Steve W.
_______________________________________________
AT mailing list
AT at lists.antique-tractor.com
http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com