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Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Plum440] #941521
03/03/11 10:27 PM
03/03/11 10:27 PM
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UPPER MICHIGAN, MARQUETTE COUN...
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NITROUSN Offline
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UPPER MICHIGAN, MARQUETTE COUN...
Quote:

I hate to put a band-aid on a problem




Than you know what the answer is. It takes less than an hour to remove the tranny. Then fix the leak and put it back in.

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: CoreyWilson] #941522
03/04/11 03:42 AM
03/04/11 03:42 AM
Joined: Mar 2010
Posts: 357
Lake Elmo, MN
Evil Monkey Offline
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Quote:

I'm not all that familiar with the car four speeds yet, but what fluid is recommended for the 833? I remember a Neon I used to have called for the pennzoil synchromesh fluid and it was pretty thin. I've seen some mention of gear oil all the way to ATF in an 833, so I'm not sure what's correct, but a little thicker oil might stop the leak too.




Whenever I've tried using the thinner 'synchromesh' fluids, I get leaks. I've always gone back to the thicker gear oil. If that's what you decide to do, make sure to use GL-4 rated gear oil - GL-4 is compatible with synchromesh transmissions. GL-5 rated gear oil is NOT designed for synchromesh transmissions, and will cause grinding while shifting.


1974 'Cuda 360/TKO 1990 Ram Van 1998 Neon
Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Evil Monkey] #941523
03/04/11 10:36 AM
03/04/11 10:36 AM
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Posts: 74,907
U.S.S.A.
JohnRR Offline
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Quote:

Quote:

I'm not all that familiar with the car four speeds yet, but what fluid is recommended for the 833? I remember a Neon I used to have called for the pennzoil synchromesh fluid and it was pretty thin. I've seen some mention of gear oil all the way to ATF in an 833, so I'm not sure what's correct, but a little thicker oil might stop the leak too.




Whenever I've tried using the thinner 'synchromesh' fluids, I get leaks. I've always gone back to the thicker gear oil. If that's what you decide to do, make sure to use GL-4 rated gear oil - GL-4 is compatible with synchromesh transmissions. GL-5 rated gear oil is NOT designed for synchromesh transmissions, and will cause grinding while shifting.




Same here , I used Mobil 1 in the trans I put the OD cluster pin in and it leaked like a stuck pig. I've had Mobil 1 634 , equivalent to 140wt gear oil, leak past NPT fittings that had telfon tape on them

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: JohnRR] #941524
03/04/11 10:51 AM
03/04/11 10:51 AM
Joined: Jul 2005
Posts: 1,499
Slidell, LA
Plum440 Offline OP
pro stock
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Slidell, LA
Quote:

Quote:

Quote:

I'm not all that familiar with the car four speeds yet, but what fluid is recommended for the 833? I remember a Neon I used to have called for the pennzoil synchromesh fluid and it was pretty thin. I've seen some mention of gear oil all the way to ATF in an 833, so I'm not sure what's correct, but a little thicker oil might stop the leak too.




Whenever I've tried using the thinner 'synchromesh' fluids, I get leaks. I've always gone back to the thicker gear oil. If that's what you decide to do, make sure to use GL-4 rated gear oil - GL-4 is compatible with synchromesh transmissions. GL-5 rated gear oil is NOT designed for synchromesh transmissions, and will cause grinding while shifting.




Same here , I used Mobil 1 in the trans I put the OD cluster pin in and it leaked like a stuck pig. I've had Mobil 1 634 , equivalent to 140wt gear oil, leak past NPT fittings that had telfon tape on them




Thanks! I think I'll try the GL-4 first before removing the tranny.

If that fix can stop the leak I'll be very


70 Challenger, 440, 4-speed, pLuM cRaZy
71 VW Super Beetle Convertible, Lemon Yellow
A couple of Jeeps…


Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: JohnRR] #941525
03/04/11 04:32 PM
03/04/11 04:32 PM
Joined: Jul 2005
Posts: 1,499
Slidell, LA
Plum440 Offline OP
pro stock
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Slidell, LA
Quote:

Quote:

Quote:

I'm not all that familiar with the car four speeds yet, but what fluid is recommended for the 833? I remember a Neon I used to have called for the pennzoil synchromesh fluid and it was pretty thin. I've seen some mention of gear oil all the way to ATF in an 833, so I'm not sure what's correct, but a little thicker oil might stop the leak too.




Whenever I've tried using the thinner 'synchromesh' fluids, I get leaks. I've always gone back to the thicker gear oil. If that's what you decide to do, make sure to use GL-4 rated gear oil - GL-4 is compatible with synchromesh transmissions. GL-5 rated gear oil is NOT designed for synchromesh transmissions, and will cause grinding while shifting.




Same here , I used Mobil 1 in the trans I put the OD cluster pin in and it leaked like a stuck pig. I've had Mobil 1 634 , equivalent to 140wt gear oil, leak past NPT fittings that had telfon tape on them




What specific weight oil do you recommend??


70 Challenger, 440, 4-speed, pLuM cRaZy
71 VW Super Beetle Convertible, Lemon Yellow
A couple of Jeeps…


Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Plum440] #941526
03/04/11 09:03 PM
03/04/11 09:03 PM
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Posts: 602
N.E.Ohio
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pacifica Offline
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What specific weight oil do you recommend??





Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Plum440] #941527
03/04/11 09:23 PM
03/04/11 09:23 PM
Joined: Nov 2007
Posts: 21,808
Kirkland, Washington
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Mopar Beach: I just fixed the same leak last summer. Its not that uncommon for them to leak at this spot if the builder doesn't put a smear of RTV around the shaft during install.

I removed my tranny, cleaned the area REALLY well with brake cleaner/lacquer thinner etc. then filled it (it was a hollow depression to the shaft--maybe 1/16" deep) with "The right stuff".

But I also 'filled' the matching area of the bell housing with RTV to make it flush too. The face of the bell (mine anyway) has depressions in it--its not a completely smooth flat surface, and yep--one of the depressions fell right over the shaft position.

Yes, I think you could seal it the way you are thinking, Slide it back, clean really well, blow dry, goop it up, slam it home and be done with it. Course you'll also be gluing your tranny to the bell, but you could probably break that bond without too much difficulty if need be in the future.

I DON'T think a fluid change will solve it, mine leaked with 75w90 GL-4 petro, Pennszoil Syncromesh, and Red Line MTF.

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Pacnorthcuda] #941528
03/05/11 09:18 AM
03/05/11 09:18 AM
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JohnRR Offline
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Quote:

Mopar Beach: I just fixed the same leak last summer. Its not that uncommon for them to leak at this spot if the builder doesn't put a smear of RTV around the shaft during install.

I removed my tranny, cleaned the area REALLY well with brake cleaner/lacquer thinner etc. then filled it (it was a hollow depression to the shaft--maybe 1/16" deep) with "The right stuff".

But I also 'filled' the matching area of the bell housing with RTV to make it flush too. The face of the bell (mine anyway) has depressions in it--its not a completely smooth flat surface, and yep--one of the depressions fell right over the shaft position.

Yes, I think you could seal it the way you are thinking, Slide it back, clean really well, blow dry, goop it up, slam it home and be done with it. Course you'll also be gluing your tranny to the bell, but you could probably break that bond without too much difficulty if need be in the future.

I DON'T think a fluid change will solve it, mine leaked with 75w90 GL-4 petro, Pennszoil Syncromesh, and Red Line MTF.




I'm not saying a fluid change is going to fix it but in my experience Synthetics leaks where DYNO oil won't .

Recommended , anything but ATF , some guys will mix the heavy weight oil with a Qt. of 5/30 motor oil , I bought Passon's oil but haven't tried it yet. I put the penzoil syncromesh in my Dart , no leaks .

The only thing about putting RTV on the end of the shaft is you have to put it in the hole on that end and even then I'm not sure how well it's going to work unless you assemble the cluster gear bearings DRY .. no grease ... so the pin is dry when it gets to the end, putting RTV on the shaft is going to put it in the cluster bearings if you put RTV on it before install ... just pointing out the obvious ...

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: JohnRR] #941529
03/07/11 12:17 AM
03/07/11 12:17 AM
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Ontario, Canada
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Stanton Offline
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Just the grease would provide a seal ... there is no pressure in the case to blow it out and it won't melt under heat so it should sufficiently fill the minute void between the shaft and case to prevent any leak.

Of course if you assemble the rollers dry using something as a temporary spacer to hold them in place then you'd probably want to smear some rtv in the hole just before you tap the shaft in that last 1/2 inch.

Am I right AGAIN John-boy ?!?!?

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Stanton] #941530
03/07/11 12:37 AM
03/07/11 12:37 AM
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JohnRR Offline
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Quote:



Of course if you assemble the rollers dry using something as a temporary spacer to hold them in place then you'd probably want to smear some rtv in the hole just before you tap the shaft in that last 1/2 inch.

Am I right AGAIN John-boy ?!?!?




All you did was repeat what I said in a different way , which was just pointing out the obvious of what Brewer said.

You give good and accurate information , too bad you're a [Edited by Moparts - Family Friendly Site - Keep it clean] at the same time.

Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: JohnRR] #941531
03/25/11 02:02 PM
03/25/11 02:02 PM
Joined: Jul 2005
Posts: 1,499
Slidell, LA
Plum440 Offline OP
pro stock
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Slidell, LA
Just an update to anyone who followed this....Switching to a 90W gear oil fixed the leak 100%!!!

It has been over a week and no drips!!


70 Challenger, 440, 4-speed, pLuM cRaZy
71 VW Super Beetle Convertible, Lemon Yellow
A couple of Jeeps…


Re: Moving a 4-speed off a bellhousing 1/4" to fix a leak? [Re: Plum440] #941532
03/25/11 03:24 PM
03/25/11 03:24 PM
Joined: Jan 2003
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JohnRR Offline
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Quote:

Just an update to anyone who followed this....Switching to a 90W gear oil fixed the leak 100%!!!

It has been over a week and no drips!!




It may still leak , wait till the weather turns HOT , but good to hear is is dry now .

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