TRNW-2: 6r140 valve body and sonnax tooling

[Steve Everett]

  I think you'd have to see a lot of these units in order to justify the
cost of all the reamers necessary,  the reamers are extremely expensive,
I've only ever built 2 or 3 of these units,  some parts of the country
obviously they would be more popular in , probably around the oil fields
and similar areas .  but the investment in reamers would be prohibitive in
my mind !

    Steve

On Wed, Dec 31, 2025 at 6:47 AM Fred Whitaker via trnw2 <trnw2 at trnw.net>
wrote:

>   Just a "Bump" for Justin. I too am wondering if anyone has a better
> Mouse trap. I have fixed a number of these by just slapping on a Ford valve
> body ,never really looking into just what might be causing problems. I have
> always leaned towards blaming solenoids with no proof.
>  Looks like Transgo still has nothing. Not much to the Sonnax Zip kit. I
> have my doubts about their Oringed end plugs they seem to put in EVERY Zip
> Kit.
> ------------------------------
> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
> Justin Merritt via trnw2 <trnw2 at trnw.net>
> *Sent:* Tuesday, December 30, 2025 1:45 PM
> *To:* Technical Discussion Forum <trnw2 at trnw.net>
> *Subject:* TRNW-2: 6r140 valve body and sonnax tooling
>
> Hello all,
> I am starting to see more and more 6r140s hit my bench.  I am comfortable
> with working on them with great success.  I have always just replaced the
> valve body with a ford OEM, but it seems these valve bodys are getting
> priced to where I may need to look at repairing them vs replacing them.  I
> do not mind investing in sonnax tooling that is needed to fix
> transmissions.  However, I don't believe in needing to ream and oversize
> every valve just because there is something available.  What are the high
> wear areas that will need to be addressed if I decide to tool up and repair
> these valve bodys?
>
> Thanks Justin
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