3 speed auto Trans mods all in one place
Is there a place where all the Auto trans mods (vb or internal) are together? If not we need to collect it all and post it in this thread and then post it in the new KC.
I have spent some time searching so I can do some mods to my minivan transmission. The problem I am running into is threads are referencing procedures without providing links or giving incomplete instructions. I hear a lot of "backyard VB mods" but I still haven't seen a proper how to. I found a thread talking about drilling some holes with broken image links, then I found a thread with images but no diagram and no instructions, I also found a thread about removing a ball but no mention of which one. Also it seems as if there are different ways around some of the mods like the Accumulator, VB, and governor all have multiple ways of modding.
Valve body mods: With a stock valve body what holes need drilled(with pictures), what ball needs removed(also with pictures), What to do with line pressure(can provide process for stock clutch pack or modified clutch pack), and any spring/valve mods. Any alternative separator plate drilling needs kept separate.
Governor: Springs, weights, and grinding -what maybe some pictures with some examples of what works on stock stuff.
Internal trans mods: Mainly clutch pack stuff like the 5 clutch setups and decreasing clutch pack clearance, Also race mods like pinion cup bracing and Needle bearing mods. Some of the simple stuff too like the heavy duty band strut and other mods too.
Torque Converter: Aftermarket options listed, and some stock stall speeds listed, neon torque converter and lockup instructions could help too.
Transfer gears/FD: I know there is a KC article already but if we can get it all together it would be nice
LSD installs: Some options like the OBX+ spacer, peloquin, or race spool.
Any other mods that you can think of that should be included feel free to post, I dont think any rebuild info other than clutch pack mods should be needed. If you are doing a rebuild the ATSG manual is a must ( I have a PDF somewhere Ill have to find it and post it)
I have spare clutch packs, and a valve body on my bench right now so if any pictures are needed of the mods I can provide them.
Re: 3 speed auto Trans mods all in one place
Your not going to find all the information in one place. There's bits and pieces here and there that you're going to have to accumulate and decipher for yourself. As far as gathering all the information into one KC article, someone just needs the drive and time to get it done.
I didn't know squat about automatics other than what I learned in school 20 years ago. A lot is searching, reading, asking questions, trial and error. I've got it all down now except for the governor, what weights and pressures to run to get wide open throttle shifts without hitting the rev limiter. In the mean time I'm installing a manual valve body in my Dad's car so he can have fun at the track until I can figure out the governor.
A.J.
Re: 3 speed auto Trans mods all in one place
There are numerous threads with all the info but here it is again. I think I covered it all.
Get the ATSG book, don't ATTEMPT to rebuild a trans without one, its invaluable.
This link pretty well cover it all, the Neon has a softer spring so use that or heat it up, your call. I also just run the stock plates in the rear drum or direct drum, could never get anything to hold up. I use 4 A404 steels and one A413 in the front drum to get 5 clutch discs in there.
http://web.archive.org/web/200312090...s%20detail.htm
Rob's guide to what transmission ratio's you have-
http://webcache.googleusercontent.co...www.google.com
Use the reusable pan gasket, #05011113AA and install a drain plug.
Grind the low/reverse pin housing so the band will clear with the drum installed.
Get a converter from Pats, Hugh's or Coan.
Install the Sonnax rear band strut.
Do this to the line pressure-
http://www.turbo-mopar.com/forums/sh...ody-and-theory
Governor info, I lightened the smaller valve as I like the 1-2 shift to take a bit longer.
http://www.turbo-mopar.com/forums/sh...light=governor
Welding up the case-
http://www.turbo-mopar.com/forums/sh...ht=dcr+bracing
I just locked the pinion retainer in place so your call on that one-
http://www.turbo-mopar.com/forums/sh...light=spinning
Depending on HP, you'll need a custom input shaft and a matching converter-
http://www.turbo-mopar.com/forums/sh...upplier-listed.
Again depending on power level, you might want to look into heat treating the output shaft.
I sell a rollerized sun gear for the output shaft as due to the loading of that area, the metal thrust washer gets pounded. Around $90 plus shipping and a core is needed.
And finally, a good thread on what your asking-
http://www.turbo-mopar.com/forums/sh...highlight=guru
Re: 3 speed auto Trans mods all in one place
Thanks for the reply simon, I would still like to get all that info into a KC article instead of relying on the web archive.
Re: 3 speed auto Trans mods all in one place
Is the accumulator piston really the same between the 904, 727 and 413 series? This eBay add implies that it is...
http://www.ebay.com/itm/Chrysler-Dod...sories&vxp=mtr
Re: 3 speed auto Trans mods all in one place
I had the same problem as the OP a year ago, i had to look in many different places to find the info i needed for a ATX.
Here are some links i saved in my fav's just incaes i need them.
https://sites.google.com/site/bammerichko/
http://www.turbovan.net/Trans.html
http://web.archive.org/web/200302062...opars+Home.htm
Re: 3 speed auto Trans mods all in one place
I think this is a great idea! Especially if I don't have to do it!:o
As a thread I think it's great for no other reason than it puts all the links in one spot... As a bonus, we might even be able to discuss the merits of one mod vs another...
Mike
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
ShelGame
What do we need it for?
Ours isn't plastic either.
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
turbovanman
What do we need it for?
Ours isn't plastic either.
We don't. Mostly I was just curious what other parts (if any) might interchange from 904 type trans...
Re: 3 speed auto Trans mods all in one place
Wanted to add you really need a way to assemble the one way clutch at the rear of the case. I found an old neon case in the jy that I beat the inner race for the one way clutch out of the case, I also got the direct drum for the 5 clutches out of it. You will have a hard time getting it in there without something like that to assemble it on. I agree with Simon get the ATSG manual it gives you a step by step guide to disassemble and reassemble the transmission along with the adjustments.
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
shackwrrr
I have a 4 day weekend coming up, I'll sit down and organize it all into a kc article. Anyone object to taking the info from the archived web pages and putting it here?
go ahead.
i talked to joe dzwill (JDIZZ on here) at sdac this summer and he was going to try to get ahold of Carl to see if we could host his old website here cause there was even more current info after the archive we have here.
so go ahead and turn that page into a post or two or 3 or a KC article and ill see if joe got ahold of carl yet.
Brian
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
Aries_Turbo
go ahead.
i talked to joe dzwill (JDIZZ on here) at sdac this summer and he was going to try to get ahold of Carl to see if we could host his old website here cause there was even more current info after the archive we have here.
so go ahead and turn that page into a post or two or 3 or a KC article and ill see if joe got ahold of carl yet.
Brian
I remember there being way more info on his site before.
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
wallace
Wanted to add you really need a way to assemble the one way clutch at the rear of the case. I found an old neon case in the jy that I beat the inner race for the one way clutch out of the case, I also got the direct drum for the 5 clutches out of it. You will have a hard time getting it in there without something like that to assemble it on...
This is the kind of thing I was referring to in regards to the thread being a good place to collect/coalesce the info and tip/tricks to successful upgrades as well as limitations of stock stuff. If I recall correctly, Simon had some issues with an accumulator piston blowing out, and had to go to a billet unit to fix it.
Stuff like this is what will allow us to be successful in our builds, and help folks avoid problems.
One other thing I'd love to see in a KC article is a list of the parts/part numbers and where to get them, sort of a one stop shop for 3-speed mods...
Mike
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
zin
This is the kind of thing I was referring to in regards to the thread being a good place to collect/coalesce the info and tip/tricks to successful upgrades as well as limitations of stock stuff. If I recall correctly, Simon had some issues with an accumulator piston blowing out, and had to go to a billet unit to fix it.
Stuff like this is what will allow us to be successful in our builds, and help folks avoid problems.
One other thing I'd love to see in a KC article is a list of the parts/part numbers and where to get them, sort of a one stop shop for 3-speed mods...
Mike
Yeah, due to the higher line pressure but doing Chad's mod fix's that problem, as the pressure is normal in reverse.
Re: 3 speed auto Trans mods all in one place
Oh, so the failure was only when it went into reverse?
What was the mod that fixed the problem?, something that limits pressure in reverse?
I understand that normally reverse gets max pressure as well as engaging the band to add some extra holding power, but figured it would be doing the same in L1 too, but I haven't dissected too many of these transmissions, so I wouldn't know for sure...
Mike
Re: 3 speed auto Trans mods all in one place
Quote:
Originally Posted by
zin
Oh, so the failure was only when it went into reverse?
What was the mod that fixed the problem?, something that limits pressure in reverse?
I understand that normally reverse gets max pressure as well as engaging the band to add some extra holding power, but figured it would be doing the same in L1 too, but I haven't dissected too many of these transmissions, so I wouldn't know for sure...
Mike
I had a 727 spring in there out of a shift kit which jacked the line pressure, reverse uses more so if I wasn't careful or the idle was too high, it would literally snap the cast piston or blow out the seal, so I made a billet one using the stock seal and it blew that out, so I had another made with a scarf seal and no more problems. I think a year after that Chad posted up his bleed on the valve body so that piston isn't needed anymore as reverse line pressure stays the same as stock.
Re: 3 speed auto Trans mods all in one place
Good info there! This thread, and the KC article that follows will be a gold mine for everyone, especially newbs!
Simon, or anyone that knows, that bleeder hole, I take it that it goes into the passage that normally sees that high/250psi, and this specific sized hole relieves enough flow to lower the pressure back to normal L1 pressures?...
Mike