someone please help with my th400 please please please
someone please help with my th400 please please please ok when i put the car into 1st gear it takes off shift to second and nothing happens and when it goes to third everything locks and the rear brakes just stop the tires from spinning. but when i put it back in first it goes like nothing is wrong. it dont shift to second but it shifts to third then it starts tripping.
Last edited by Travose21; Nov 7, 2007 at 07:32 PM. Reason: wrong word
i know someone has had this problem anyone. its like the car wont go in second gear but goes to third and then it kills the tranny it kinda hard to explain but it is like it is trying to go into park
Intermediate sprag would be the likley cause . I think I spoke to you on the phone
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You need a borg warner 34 element sprag and an early TH400 drum or a 4L80-E drum.
I machine the common TH400 drums to use a sprag element so I can control the diameter of the race. Many of the early Th400 drums have been reground and are undersize allowing the sprag to roll easier.
I machine the common TH400 drums to use a sprag element so I can control the diameter of the race. Many of the early Th400 drums have been reground and are undersize allowing the sprag to roll easier.
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Intermediate sprag is your problem. The sprag is designed to free wheel in 3rd. Seeing as you have no 2nd when the sprag should be holding and a bind up in 3rd, it's pretty obvious. Builder error! Vince
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Verdad Gallardo I installed a low sprag in a TH400 backwards ONCE. LOL Most are not sprag type and it was one of the first TH400s I ever did. Lesson learned.
TECH Resident
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From: sneaking in your back door as you leave!/cartersville ga
when did it start doing this? i know i spoke to you on the phone before i went on vacation and you said it did great at the track.
this is not a fresh rebuild. i was running it when we traded.
what would cause it to fail?
this is not a fresh rebuild. i was running it when we traded.
what would cause it to fail?
it started doing this when I was driving in the city. no warning at all. it just did it out of the blue. how much will it cost to rebuild and what part should I buy. I need the best
TECH Resident
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From: sneaking in your back door as you leave!/cartersville ga
i hate it happened. no more than what you got to drive it.
i read an article on another forum a while back that said.
if you do a burnout in 2nd gear do not let the tires catch in 2nd gear, be sure to shift into 3rd before the tires catch and gradually let off. i also remember reading something about not turning the car off while rolling also, but cant remember exactly what it said.
maybe the trans. gurus can chime in!
i read an article on another forum a while back that said.
if you do a burnout in 2nd gear do not let the tires catch in 2nd gear, be sure to shift into 3rd before the tires catch and gradually let off. i also remember reading something about not turning the car off while rolling also, but cant remember exactly what it said.
maybe the trans. gurus can chime in!
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
Based on the comments since Vinc offered his advice I would have to suggest that the sprag rolled. It is not likely, but I have seen stranger things. Usually they will fail outright before this happens.
The cost to repair it is going to be dictated by what needs to be done internally and whether you pay for someone to R&R it for you.
Typically we charge $275.00 plus parts for a bench repair on a well built "fresh" unit.. not a bench overhaul mind you. If it needs to be completely reconditioned it would be $450.00 plus parts in our shop.
If you would like to know more just give us a call tomorrow.
g
The cost to repair it is going to be dictated by what needs to be done internally and whether you pay for someone to R&R it for you.
Typically we charge $275.00 plus parts for a bench repair on a well built "fresh" unit.. not a bench overhaul mind you. If it needs to be completely reconditioned it would be $450.00 plus parts in our shop.
If you would like to know more just give us a call tomorrow.
g
HEY TRAVIS GILBERT AT ACE is going to be building my tranny in my car.
i have talked extenisvly with this guy you know i would never stear you in the wrong direction. he knows his stuff and i think that would be best to get it done because i dont know of any reliable tranny builders here in new orleans that does good and offers a warranty.
i have talked extenisvly with this guy you know i would never stear you in the wrong direction. he knows his stuff and i think that would be best to get it done because i dont know of any reliable tranny builders here in new orleans that does good and offers a warranty.
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
I understand your frustration Travis... sometimes you just wanna punt!
If you would like some solid advice from someone who has been building 400's for well over 20 years, give us a call we would be happy to discuss this repair with you.
And not to worry, if you have another source for this repair and want a second opinion about which way to go or what to do let me know. Between John and I there is no doubt we will help you find the best route to go.
Thanks for the kind words Nick.
g
If you would like some solid advice from someone who has been building 400's for well over 20 years, give us a call we would be happy to discuss this repair with you.
And not to worry, if you have another source for this repair and want a second opinion about which way to go or what to do let me know. Between John and I there is no doubt we will help you find the best route to go.
Thanks for the kind words Nick.
g
You may can change it yourself if you want to try it give me a yell and I will walk you through it
__________________
i cant change this myself. i the shop i was told to go to down here gonna charge me 875 plus tax with a 1 year warranty. is that high or a fair price. thats to drop it off and they do everything
Well actually you probably could change it yourself, However if the unit has just been built if you cant get the guy who built it to fix it I guess you have no choice, And with the R&I and figuring they are planing on more than just the sprag (intermediate clutch) and other contamination possible thats not to bad if they are going to warranty the whole trans for 1 year
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FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
Well at first glance it seems fair if it is a parts and labor quote.
But you need to know what you are getting for your money... ask them what parts they are going to install and let's go from there.
g
But you need to know what you are getting for your money... ask them what parts they are going to install and let's go from there.
g