Auto gearbox

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Gortour
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Mon May 04, 2009 11:34 am

walshc wrote:Right, so i went in my local motorfactors today to order the correct clutch, to which he looked me dead in the eye and said autos dont have clutches :o: i described what ive read on here and he just said that my problem would be the torque converter.
Does he have no clue, or am i on the receiving end of a joke here? :chuckle:
The guy in the motorfactors is partly correct. The auto doesn't have a clutch in that respect, it has the torque converter. So he is correct. However, there are internal clutches within the gearbox itself, which are not normally considered user-serviceable. Your Haynes book of lies will probably tell you to take it to a specialist.
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Mon May 04, 2009 11:36 am

I took it off a car i broke for spares.i also have a 325i auto box,the mileages were around 140,000 miles.im unsure if these would fit your 323i.
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ProToZyKo
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Mon May 04, 2009 11:33 pm

Well i disagree with the motorfactor guy.
All auto's have clutches, many clutches, as i told before on mine atleast i have "A" clutch that makes it go forward, then "B" clutch that makes revers and high gear, then "C" clutch that i think is 1,2,3 then "D" clutch that is revers and low gear, then i have "E" "F" "G" aswell don't know what they do atm ;) I changed all of them.
A clutch in an auto has several disks, these can get worn, this will make the auto slip.
Best thing todo is to buy a overhaul kit for the auto, or find another, but finding another isn't always easy, the new could be damaged aswell.
http://kijiji.ebayimg.com/i23/01/k/000/ ... 398_18.JPG this is a picture of the overhauling kit, you can see some disks at the top left, that's the clutches. There is another name for it but i don't know the english one.

All auto repair guys says that the hardest part is to get the damn auto down from the car, i think this is correct, if you take it down and dissamble it you should be able too see what's the problem, take your time and be clean, soak everything in fresh atf oil before assembly it again.

http://www.disgruntledgoat.com/content/ ... F4HP22.php A clutch repair guide, altho i think you need to change other clutches aswell.
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Mon May 04, 2009 11:41 pm

I have a 325i autobox here that's done 59k it worked perfect before the manual conversion

100 quid collected from huddersfield or I can drop it off in Manchester if your struggling :)
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walshc
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Wed May 06, 2009 3:59 am

That would be better for me i think :)
Just need to find out if it will fit and work on my 323. How much all together to drop it off? if it will work

ProToZyKo, why does the gearbox have to have the same numbers for it to work? is it just different ratios? or will another box, say from a 325, physically not fit?
Would it be ok as a short term method so i can save the money to get my box rebuilt?
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Wed May 06, 2009 7:14 am

will drop it off for free as I spend a lot of time in and around manchester with work , :)
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ProToZyKo
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Wed May 06, 2009 4:23 pm

Well to ensure perfect fit without any trouble the numbers need to be the same, but with small modifications you can fit another box on your car, depends on the difference that is.
First the converter could be another size to fit the flywheel, but you can use your old one so that's not really a problem, then there could be a problem with electronic since some autos have some and some have none.
Other than this there could be a problem with the pipes, but i think all bmw auto's uses the same.
I don't know much more about this atm, but a gearbox from a 323 could be the same as the one on a 325, just best to check the numbers then you will now for shure.
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walshc
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Thu May 07, 2009 2:10 am

Ahh cool, cheers dude

e30topless, thats even better :) Shall PM you 8)
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ProToZyKo
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Thu May 07, 2009 9:40 pm

walshc take a good look at the new one to figure out what differences there could be, if your lucky it's only that the 325 has higher ratio, not really a problem but you will use more gasoline ;)
And especially check the middle axle mounting, it's a pain to change that when the gearbox is mounted.
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Tue Jul 07, 2009 12:58 pm

Bugger! I got the same problem! Feels like a clutch is slipping and revs up if given a push :-(

Changed ATF. I noticed a few weeks ago it was revving up but still moves! Hills turned into a pita!!!
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ProToZyKo
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Tue Jul 07, 2009 3:44 pm

Yeah big problem with the ZF boxes, but if you lucky your auto still brakes on low gear, problem could be simple to fix then, but if it doesn't brake you need to take it down and overhaul or buy a new/used one.
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