How to mod 2-3 shift,mushy when van shifts by itself-valve body mods to fix this here

[turbovanman]

Have done the usual mods, hi stall, line pressure 7 turns. 1-2 shift is awesome but if I leave it in D, 2-3 shift is very mushy/wishy washy. The clutch packs are tight, how can I make it firm like the 1-2 shift. I am always manually shifting it from 2-3 so its firm-which it is if I use the shifter?

[JDIZZ]

Quote:

Originally Posted by turbovanman Have done the usual mods, hi stall, line pressure 7 turns. 1-2 shift is awesome but if I leave it in D, 2-3 shift is very mushy/wishy washy. The clutch packs are tight, how can I make it firm like the 1-2 shift. I am always manually shifting it from 2-3 so its firm-which it is if I use the shifter?

Seven turns of the line pressure screw is not that much extra pressure, around 11-12 psi. (but it is about the max of what the stock pressure reg. spring can handle). Added to the stock 80 to 88 psi you are most likely less than 100 psi at full throttle.
How tight is the clutch pack for third? If it is over .035" it is not tight.
Did you open the feed holes in the v/b spacer plate for third? If so, what ones and how big did you make them? If you like, send me a PM with your email address and I will send you a pic of the holes to open up and what size to start with. I would post it here but I can't .
Did you add a spacer to the by-pass and shuttle valve to hold them from moving? They both are in the apply feed circuit for third.

Are you going to be at SDAC this year? If so, come find me, we can BS over a few cold ones.

Joe Dzwil

[JDIZZ]

Valve body spacer plate feed holes for third gear:

I opened the upper two holes in the pic to .161" (size 20 drill). For the two holes on the right side of the spacer plate, the outer hole is opened to .161" and the inner is .157". The holes are colored red in the picture.


Joe Dzwil

[turbovanman]

Quote:

Originally Posted by JDIZZ Did you add a spacer to the by-pass and shuttle valve to hold them from moving? They both are in the apply feed circuit for third.

I just noticed you mentioned the bypass valve. Thats not on anyones website and I only did the shuttle valve. What are the steps for the bypass valve? I never drilled the spacer plate either, doh!

[JDIZZ]

Another pic.


Joe Dzwil

[JDIZZ]

Quote:

Originally Posted by turbovanman I just noticed you mentioned the bypass valve. Thats not on anyones website and I only did the shuttle valve. What are the steps for the bypass valve? I never drilled the spacer plate either, doh!

Thats because I don't have the skill to make a web site

Carl (dbltrbl) was kind and added a lot of my info to his web site, but not all of it was there.

If you did not drill the spacer plate for the feed of third, it will shift like a turd. MP drilled the two on the right to .125. You can make them bigger (the two on the right) then I did (157" and .161"), but the valve body passage walls will be compromised.


Like the shuttle valve, the bypass valve gets held from moving with a spacer. MP used a .187 steel ball. It gets slipped inside the bypass spring. I think I use a 5/16 steel rod for my last few. When you are done, make sure there is a little free play so the end cover is not held off the valve body.

Joe Dzwil

[JDIZZ]

This is the valve body mods from a MP shift kit. You cant see it well, but the shiny thing in the yellow spring is the steel ball. The pic's of the spacer plate I posted above are also from the MP shift kit. You can see what should be two large holes in a stock plate for the accumulator are solid.

Simon, I think you should make this a sticky.

Joe Dzwil

[Stevien1]

Excellent info, Joe!!

Do you have any recommendations (or maybe an application) for a stiffer pressure reg spring? On Carl's page, it shows a spacer added between the spring and the adjuster. I already maxxed out the adjustment screw (on the very last thread), so adding the spacer would bind up the stock spring and essentially make one solid spacer. Is this the idea?

-Chuck James

[turbovanman]

Thanks Joe, I will let you know how it goes, will probably do it in the next few weeks.

Sticky is done!

[JDIZZ]

While I am on the subject, I don't know of any web sight that has it, so I will go over it here. You can't buy this anymore so I don't think anyone in Chrysler will care.

The MP shift kit uses the above posted valve body spacer plate. The accumulator for second is blocked off by the two missing holes on the left. The attached pic on this post locates the spot a ball is removed from (in red), all others remain in place. This allows second feed oil to bypass a restriction in the v/b spacer plate. For third, the two holes (on the right side) in the above pic of the v/b spacer plate are opened up to .125" (not the top two in the center, they are my modification). The shuttle valve is held by a steel rod, 1.458" long by .250 wide. The shuttle valve spring is removed and replaced by the rod. In one of the above pic's you can view this. The bypass valve is held by a .187" steel ball placed inside the bypass valve spring under the end cover.

I hope this info is usefull, If it is please leave me some positive feedback on this forum and/or offer me some beer at the next SDAC

[JDIZZ]

Quote:

Originally Posted by Stevien1 Excellent info, Joe!! Do you have any recommendations (or maybe an application) for a stiffer pressure reg spring? On Carl's page, it shows a spacer added between the spring and the adjuster. I already maxxed out the adjustment screw (on the very last thread), so adding the spacer would bind up the stock spring and essentially make one solid spacer. Is this the idea? -Chuck James

Chuck,
I used a spring from Pep Boy's I matched up. It worked well. This idea came from another TD.com member from PA (I think). I went back last year for more and found they no longer carry the springs. So I also need to find a place that has something useable.

Dont add a spacer that is too thick as to stack/bind up the spring.


Joe Dzwil

[turbovanman]

I did that mod, took out one of the valve body balls.

I posted this a while ago but got nothing really, It won't downshift part throttle 3-2, I have to manually do it or go WOT. I made a mistake in the PM, its not 2-1.

Thanks again Joe, I would give you some feedback but i have to spread more around which I have,

[JDIZZ]

Quote:

Originally Posted by JDIZZ Valve body spacer plate feed holes for third gear: I opened the upper two holes in the pic to .161" (size 20 drill). For the two holes on the right side of the spacer plate, the outer hole is opened to .161" and the inner is .157". The holes are colored red in the picture. Joe Dzwil

If anybody wants to add my info to their web site, feel free. All I ask is please give me credit for the info.

[matthew]

Hi I have the same mods that dbltrl has. When I am traveling at 50mph and floor the car the transmission goes into 1st gear and quickly to second. It really scares me it over revs the motor Do you have any ideas???

Thank you
matt

[turbovanman]

Quote:

Originally Posted by matthew Hi I have the same mods that dbltrl has. When I am traveling at 50mph and floor the car the transmission goes into 1st gear and quickly to second. It really scares me it over revs the motor Do you have any ideas??? Thank you matt

Thats normal, mine does it. Your not damaging it because you haven't hit the rev limiter, Try playing with your tv cable!