Eliminating knockdown with the Transgo valve

IOWA LLY

Yes, its really me
Feb 23, 2007
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Then why did Transgo put a check ball and spring in the valve in the late ones?


I was referring to modifying a stock valve. Which is what Tim was talking about doing I believe. There is no passage through the center of a stock valve on the later ones. Transgo accomplished the same end result on both of there valves with the check ball and spring. However, as I'm sure you know Mike, the transgo valve for 01-04.5 trannys has a passage through the middle to mimic the factory circuit and the transgo valve for the later ones does not. The fluid ends up the same place but takes a different route to get there. By not blocking this circuit when you dump the pressure like you do by cutting off the end lobe, or removing the check ball on a transgo valve, you now have an unnecessary bleed in the system. whether or not this is ok is up to you.....;)

Where is Stevie Jr? I want some answers with his winkie eye.


What else do you want cleared up?
 

Mike L.

Got Sheep?
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Aug 12, 2006
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I was referring to modifying a stock valve. Which is what Tim was talking about doing I believe. There is no passage through the center of a stock valve on the later ones. Transgo accomplished the same end result on both of there valves with the check ball and spring. However, as I'm sure you know Mike, the transgo valve for 01-04.5 trannys has a passage through the middle to mimic the factory circuit and the transgo valve for the later ones does not. The fluid ends up the same place but takes a different route to get there. By not blocking this circuit when you dump the pressure like you do by cutting off the end lobe, or removing the check ball on a transgo valve, you now have an unnecessary bleed in the system. whether or not this is ok is up to you.....;)




What else do you want cleared up?

Put a pressure gauge on it and see what the bleed is.;)
 

IOWA LLY

Yes, its really me
Feb 23, 2007
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Put a pressure gauge on it and see what the bleed is.;)



Your only digging your hole deeper Mike. Anyone who is paying attention and knows anything about how hydraulics work can see your trying to pick a fight and nothing else.

You will not see a pressure drop with the bleed you create from doing this as the system has plenty of capacity to overcome it and maintain pressure. If this wasn't the case your C3 oiler would starve the system for oil as it is essentially another bleed. And you yourself have said this isn't the case so it backs that up. The whole transmission is full of "bleeds". All automatics are. However, every one that you add requires the pump to pump more oil, which takes power, and creates heat. Now, if you don't care, that's fine. As you and others have said, it will work. But I stand by what I said and that is simply if you cut off, or put a groove in the end lobe, you are dumping oil that wasn't intended to be simply bled off, so why not block the passage on the later ones like you do on the earlier ones.


Have a nice day Mike, I really think you should lighten up.:thumb::hug:
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
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Fullerton CA
Your only digging your hole deeper Mike. Anyone who is paying attention and knows anything about how hydraulics work can see your trying to pick a fight and nothing else.

You will not see a pressure drop with the bleed you create from doing this as the system has plenty of capacity to overcome it and maintain pressure. If this wasn't the case your C3 oiler would starve the system for oil as it is essentially another bleed. And you yourself have said this isn't the case so it backs that up. The whole transmission is full of "bleeds". All automatics are. However, every one that you add requires the pump to pump more oil, which takes power, and creates heat. Now, if you don't care, that's fine. As you and others have said, it will work. But I stand by what I said and that is simply if you cut off, or put a groove in the end lobe, you are dumping oil that wasn't intended to be simply bled off, so why not block the passage on the later ones like you do on the earlier ones.


Have a nice day Mike, I really think you should lighten up.:thumb::hug:

Every time you make a post in the trans section you take a shot at me. You have been taking shots at me for years. You have jumped into every conflict I've had with Steve and ripped me. Now you want me to lighten up? GFY
KISS MY ASS.
 

delong_1

<< my work
Dec 5, 2008
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Arvada, CO
i do have the transgo valve and spring in it, i want to pull the trans and do whatever mod i need to do to either the stock valve or the transgo valve with no guesswork as to keep full line pressure @ lockup
 

delong_1

<< my work
Dec 5, 2008
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so, i didnt have a chance to check pressure before the trans decided to blow a converter seal so i though i would triple check everything so when i take it back apart i know im set this time. can anyone send me a pic of the modded stock valve? also i have a shimmed pr valve wondering about the thickness and if i should go thicker to bump pressure up a bit more.
 

xtremebikr04

New member
Jan 17, 2011
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Vermont
so, i didnt have a chance to check pressure before the trans decided to blow a converter seal so i though i would triple check everything so when i take it back apart i know im set this time. can anyone send me a pic of the modded stock valve? also i have a shimmed pr valve wondering about the thickness and if i should go thicker to bump pressure up a bit more.

I would look into mikes line pressure upgrade spring
 

mike diesel

I'm alright.
Sep 6, 2012
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SLC, Utah
Then why did Transgo put a check ball and spring in the valve in the late ones?

I'm going to bring this back in hopes of a response.

So it is the same procedure then modify the lly stock valve as it is the lb7 valve? I'm looking at my stock valve here and it appears I have the later lly valve as there is no oil passage in the valve itself. So would i still grind a groove in the outer most lobe like described by Tim in the earlier post?
 

xtremebikr04

New member
Jan 17, 2011
573
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0
Vermont
I'm going to bring this back in hopes of a response.

So it is the same procedure then modify the lly stock valve as it is the lb7 valve? I'm looking at my stock valve here and it appears I have the later lly valve as there is no oil passage in the valve itself. So would i still grind a groove in the outer most lobe like described by Tim in the earlier post?

That's what i did with mine. Put a pressure gauge on it afterwards and oil pressure stayed consistent (no knockdown)