TRNW-2: 6l80 questio about sonnax pr valve

Ryan D ryan4r100 at gmail.com
Fri Jan 3 17:07:08 PST 2025


Thanks guys.

On Friday, January 3, 2025, Dan Hogan via trnw2 <trnw2 at trnw.net> wrote:

> You will have no balance oil available which means the PR valve will be
> located in the high pressure position in the bore.
>
> Converter charge will be reduced significantly so you may have poor or no
> engagements along with overheating and high line pressure (harsh shifts).   Bad
> news all around.
>
> Great article by Sonnax’s Greg Nader on how this all works. Worth the read
> to understand the role of balance oil and regulating.
>
> [image: Series-bw__1_.png]
>
> Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube
> Circuits
> <https://www.sonnax.com/tech_resources/131-anatomy-of-a-transmission-oil-flow-in-the-pump-pr-converter-cooler-lube-circuits>
> sonnax.com
> <https://www.sonnax.com/tech_resources/131-anatomy-of-a-transmission-oil-flow-in-the-pump-pr-converter-cooler-lube-circuits>
>
> <https://www.sonnax.com/tech_resources/131-anatomy-of-a-transmission-oil-flow-in-the-pump-pr-converter-cooler-lube-circuits>
>
> —-
> Dan Hogan
> Buster’s Transmission Service
> Matthews, NC 28105
> 704-847-5321
> https://busterstransmissionservice.com
>
> On Jan 3, 2025, at 6:47 PM, Ryan D via trnw2 <trnw2 at trnw.net> wrote:
>
> I have a 6l80 here and the builder who built it before left out the
> little ball and didn't drill the hole for the sonnax pr valve. I remember
> reading that happened on here.
> I was wondering what symptoms that would cause.
> Thanks
>
>
>
>
> --
> Ryan
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>

-- 
Ryan
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