where do i get sonnax valves? im installing a trans go shift kit and well im gonna be down there, might as well change it. any help would be great!!!

patwrik

 

I have been thinking about buying a shift kit from Baumann Engineering with sonnax valves, so I know that they carry them. I don't know how much they charge for them, but you can buy sonnax valves from them. Just check out their website for the phone number. Hope that helps a little.

 

This is from a post that was going on last week. I am in the process of installing the Transgo kit (see my post "Wtf .093??" to see why I am in the process). I also installed the Sonnax valves.
Heres the information:

Spoke with Sonnax
Here are the part numbers they gave me for their products:

Pressure Regulator Valve - #76948-09

Pressure regulator boost valve (highly recommended by them to go with the PRV - #76948-02K

Bypass Clutch Control Valve- #76948-04k

Also they turned me on to ATC Transmission parts. Here in Baltimore they blew away Baumann for price.

If you want to find a dealer in your area you can call Sonnax at 1-800-843-2600. Their tech guys were very helpful. They also said to drill out the existing sleeve on the bypass valve with a 1/16 drill and strait out the other side. The instructions say in some applications. Sonnax says now it is on all applications.

Give Sonnax a call or check your local Yellow pages for the number.
Also I will be posting my experiance with the install and after later this week...

 

what exactly do the sonnax valves do? how do they compare to stock?

 

These valves in stock form are prone to sticking and failure. The Sonnax valves do exactly the same thing as stock valves but are redesigned to prevent these failures which can be catastrophic.

 

Transgo told me that only the early trannies used the valves that stick. All 97+ trannies have the newer valves and there is no need to upgrade they told me. I looked at mine and Transgo was right.

 

Amen...finally somebody has done some thinking and not just following the lemmings. The 94/95 4R70W was the problem child. The valves knocked in my valvebody for over 40K miles...yet never failed. 97 was a big year of upgrades to t he 4R70W aswell as 99. You do not need to replace any valves buy any shift kits or anything....just enlarge a few holes in your seperator plate and happy shifting.

Seabass

 

HI!... That's funny!LoL! My "99" 4R70-W's valves were half worn out (60,000KMS) by the time I switched to the SONNAX valves. Also, the SONNAX valves were different that my factory ones. My tranny builder also told me that the SONNAX valve were MUCH superior than the factory ones.

 

Why take a chance? You know the Sonnax valves are far better than stock and while you're in there you might as well drop $40 on the better stuff...

I bought mine from ATC Transmissions Distributor in Jacksonville. Fellows name was JC. He drop shipped them right to my front door and gave them to me for wholesale cost. $54 for Pressure regulator, clutch bypass, and boost sleeve.

 

Whatever.....it's your money.

C

 

 

Just FYI, I had the torque converter shudder, very mild when climbing hills at slow speed. I still had it after changed to synthetic ATF.
I did the transgo kit but also replaced with Sonnax valves.
My shudder is completely gone...
I for one am glad I spent what amounts to maybe $45. I thought I was going to have to replace the torque converter.

 

While Ford did change the design of the pressure regulator valve in 1996 it still has problems. The problem is that most of the surface area of the valve on one side is exposed to pressure, and the opposite side has most of it's surface area exposed to exhaust/suction. This side loads the valve and causes the biggest spool to become worn on one side. I have two of the 96 and up valves sitting on my work bench right now with some pretty serious wear. I had hoped the change Ford made was to fix this problem, but after taking apart some 96 and later valve bodies, I know the problem still exists.

It has never been, nor will it ever be our practice to sell customers parts they do not need to make a buck.