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Re: A vs. J ODs in a TR6?

To: Rob Pennington <robp@ncsa.uiuc.edu>, triumphs@autox.team.net
Subject: Re: A vs. J ODs in a TR6?
From: Dan Buettner <danb@thelittlemacshop.com>
Date: Mon, 11 Jun 2001 20:34:01 -0500
References: <5.0.2.1.2.20010611132428.032c6e58@pop.ncsa.uiuc.edu>
>I've got an A type overdrive in my 74 TR6 and am looking at changing to a J
>type.  Anybody have any strong preferences on which of these is better,
>stronger, easier to get parts for, etc.?  If it makes any difference, the
>engine is a bit more than stock and has been rebuilt with an S2 cam, weber
>downdrafts and I'll be putting on a 9.25:1 CR head pretty soon.
>
>Rob
>74 TR6 daily driver


Rob --

Having worked on both types, I'll say that the A-type is beefier and 
easier to work on, but it is definitely a little more work to 
get/keep running.  The solenoid is fairly tricky, and parts are more 
expensive.

The J-type is more common; you can find them on, among other things, 
Volvo 240s, so obtaining cheap spares/replacements should be easy. 
A-types, on the other hand, are fairly unusual, especially when you 
want/need one!  Parts for A's are pricey new or used.

I believe either of the two will serve you well, if given proper care 
- keep the oil properly filled and the solenoid properly adjusted.

I drove my first car (a 1976 Volvo 245 with J-type OD) into the 
ground (18 years old/200,000 miles when rear-ended by a minivan at 35 
MPH), and that overdrive worked perfectly as long as there was oil.

Should you decide to switch to a J-type, you should immediately box 
up the A-type and ship it to me.  It would be great karma.  ;)

HTH,
Dan
-- 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Dan Buettner  -  Des Moines, Iowa  -  mailto:danb@thelittlemacshop.com

1957 TR3, TS15098L, now with an O!  Undergoing frame-off restoration
begun 9/99; now at the reassembly stage (and a long stage that may be).

1977 Spitfire, FM64159U, with an O.  In need of a comprehensive
restoration (again); will someday drive again!

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