Hey Russ et al,
I agree with mrdancer! Unfortunately those diameter #s looked familiar The
.078 is a 5/64 drill, the .09375 is a 3/32... Youll need to get a numbered
drill set to do this in stages between .078 and .093... A #46 is .0810, #45
is .0820, #44 is .0860, #43 is .0890, #42 is .0935 You can also go into
letter sizes, but Numerical drills seem to have a decent range between .078
and .093...Id suspect that the recomendation for drill sizes is based on
common drill availability as much as performance considerations... Thank you
Machinery's Handbook
BKB
-----Original Message-----
From: mrdancer [mailto:mrdancer@camalott.com]
Sent: Thursday, February 11, 1999 4:34 PM
To: dakota-truck@buffnet.net
Subject: DML: Re: Transgo Shiftkit
You may want to think carefully before fully drilling it to 0.093". Your
compromise at 0.078" was not splitting the difference (you were getting
maybe a quarter of the potential....) - the area of a circle (the hole) is
exponential to the length of it's radius, i.e. - (A=pi *r-squared). I think
you'll see a LOT of gain between 0.078" and 0.093", MUCH more than between
0.059" and 0.078".
-----Original Message-----
From: RAS*002@worldnet.att.net <RAS*002@worldnet.att.net>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Cc: Kabuki2@aol.com <Kabuki2@aol.com>; rdperform@aol.com <rdperform@aol.com>
Date: Thursday, February 11, 1999 8:16 AM
Subject: DML: Transgo Shiftkit
> I just got my Transgo shiftkit installed, quite a chore! I'm no
>fumble-fingers, but it still took about 7 hours total. I'd like to make
>a few observations/suggestions for those who haven't yet done this shift
>kit installaltion. It's really not hard, just time consuming.
>
> 1. If you won't be re-using your trans fluid, buy 9 qts. I saved
> 7 and spilled about 2 on the floor (drain pan was too small).
> Since my truck has 4100 miles, I re-used most of it.
>
> 2. The instructions say drilling the separator plate 1-2 shift hole
> to .093 is not recommended except for extremely hard shifts or
> race use. Bull! Drill it out! Mine was .059" so I compromised
> by drilling it to .078". The 1-2 shift is quicker, but doesn't
> seem any firmer. I'll probably be re-drilling it soon. Good
> thing I installed that B&M drain plug kit!
>
> 3. After installling the blue spring on the pressure regulator and
> adjusting it as per the instructions, the truck was hitting the
> rev limiter before shifting. I called Transgo and they told me
> that the "TV Cable" needs to be re-adjusted any time the spring
> is changed or the "preload plate" is screwed in or out. This is
> an easy fix and it worked perfectly. (Should have put that in
> the instructions, Transgo).
>
> 4. There was no mention of the "ECE check ball" that fell out of the
> channel plate when I went to reassemble the valve body. I knew
> it was there, I saw it during disassembly, but forgot and when I
> flipped the plate over - ball went ??? I remembered when I heard
> it hit the floor, otherwise, I'd have put it together minus this
> ball. It is shown in the factory service manual, but I have no
> idea what it does, or what would have happened if it were left
> out. Luckily, I found it just as I was about to give up and go
> buy another. (Put in the instructions, Transgo)!
>
>All in all, it was pretty interesting. Aside from the above, it went
>quite well. The shifts are noticeably quicker, but not as firm as I'd
>hoped. I may drill out the 1-2 separator hole to .093 and add a few
>turns to the pressure regulator (instructions show up to 6 add'l turns
>for competition use), as I didn't add any.
>
> Good Luck,
>
> Russ Selkirk
>
>--
>'96 Black Impala SS
>'85 Silver Monte SS
>'98 Amethyst Dakota RC R/T
> - Port Neches,Texas
>=================================
>NOTE: Anti-Spam Address! Please
>reply to: RAS002@worldnet.att.net
>=================================
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