TRNW-2: 6r140 valve body and sonnax tooling

[Darwin]

They're $800+ now??!!  Holy Balls!!

Darwin


On 12/31/2025 7:33 AM, Justin Merritt via trnw2 wrote:
> I justify one reamer set up for every overpriced valve body that I can 
> save.  The valve bodys are 800+ now, so if I buy a reamer set up for 
> 500, then that justified itself instead of buying the valve body.  
> Reamers dont fix the solenoid issues on this particular transmission 
> also.  So I have to take into account replacing certain or every 
> solenoid also. I've got 2 farm trucks here from the same farmer both 
> needing transmissions.  So in my mind, buying 2 reamers over valve 
> bodys would make sense.  Looks like sonnax makes a reman valve body 
> for these that I can get.  They are cheaper than ford OE, so that is a 
> route i am looking at also.  It would be nice to know if the sonnax 
> reman has all the oversized valves already installed, but they don't 
> tell you that.  I guess I could buy one and take it apart to see what 
> they are doing.  And do a little vacuum testing on my original.
>
> Justin
>
> On Wed, Dec 31, 2025 at 7:14 AM Steve Everett via trnw2 
> <trnw2 at trnw.net> wrote:
>
>       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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>         TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
>
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>
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