[Fot] Increasing OD pressure

[Charly Mitchel]

Chuck, I feel the stock J-type od unit is good as is.  I used mine for
several years with out any problem.  I had a problem with it this year and
found the problem wasn't the OD, but a tight bearing in the transmission.
This caused the oil to heat up and thin causing the OD to not engage after a
few laps.  The following session it would work fine for several laps and
quit again.  Very frustrating and hard to diagnosis.
I then put on a Volvo unit that I only clean the magnet and screen, and it
worked fine.  I had used a A-type transmission and OD borrowed from another
racer and I didn't notice much difference except the A shifts up quicker and
the J shifts down quicker.
I read in an article regarding the J-type unit in a site for Volvos(maybe
turbobricks.com) that you can change the relief valve spring to give a high
pressure.  I put a gauge on mine(J-type) and saw 450psi.  I also use Redline
75w90ns oil in mine.  I'm not sure how much you're looking for, but this
seemed adequate.
Charly Mitchel
TR6 #44
----- Original Message ----- 
From: "Chuck Arnold" <triosan at gmail.com>
To: "Friends" <fot at autox.team.net>; "Triumph" <6pack at autox.team.net>
Sent: Monday, October 15, 2007 8:09 AM
Subject: [Fot] Increasing OD pressure


> Sorry to some of you whom I may have asked this question directly.  I seem
> to keep losing answers.
>
> I have j-type ODs that will use in racing -- shifting at about 6000 rpm.
I
> am rebuilding two units this winter.  Want to know what people have done
to
> increase the pressure in the j-type system.  Also what has been done to
make
> shifting in and out quicker?
>
> Will share the responses and write an article on my endeavors.  Anyone
have
> good links for OD repair/enhancement?
>
> Thanks
>
> -- 
> Chuck Arnold
> _______________________________________________
> http://www.team.net/donate.html
>
> charly at mitchelplumbing.com
> Fot mailing list
> Fot at autox.team.net
> http://autox.team.net/mailman/listinfo/fot