518 transmission mix-n-match?
#474257
09/21/09 12:15 AM
09/21/09 12:15 AM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
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OP
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Irving, TX
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The tranny in my 92 Cummins is slipping in OD. I have a spare 518 out of a gas truck that is waiting to go in the hot rod.
I tore down the OD section of the spare tranny and it looks good. It's a little later unit judging by the lock up converter and 5 gear OD planetary. The OD section looks great inside.
Would it be possible to transfer the steels and clutches from the spare tranny into the truck's tranny? Are there any interchange issues?
I haven't torn down the truck yet. I'm on a pretty tight budget so if this will keep it going until I can go through the transmission properly, I'd sure like to do it.
I'd love to fix it for the price of a gasket, especially since I would not have to remove the transmission to do so.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: 518 transmission mix-n-match?
[Re: 375inStroke]
#474261
09/21/09 08:39 PM
09/21/09 08:39 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
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Irving, TX
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My service manual says the '92 diesel transmission has 5 discs and 6 steels for the overdrive clutch and 8 discs with 9 steels for the overdrive direct clutch.
I know the diesel governor has a heavier weight for low speed shifts.
I think I'm going to give it a shot but only after my club's car show this weekend.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: 518 transmission mix-n-match?
[Re: 375inStroke]
#474262
09/22/09 09:26 AM
09/22/09 09:26 AM
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Joined: Jan 2003
Posts: 74,974
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,974
U.S.S.A.
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Quote:
I think the gas A518 (46RH) has 8 double sided frictions and 7 steels, and the Diesel (48RH) has 23 single sided frictions.
The 48RH is a 2004(2003.5??) up trans , but 23 frictions ??
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Re: 518 transmission mix-n-match?
[Re: feets]
#474263
09/22/09 09:28 AM
09/22/09 09:28 AM
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Joined: Jan 2003
Posts: 74,974
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
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U.S.S.A.
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Quote:
My service manual says the '92 diesel transmission has 5 discs and 6 steels for the overdrive clutch and 8 discs with 9 steels for the overdrive direct clutch.
I know the diesel governor has a heavier weight for low speed shifts.
I think I'm going to give it a shot but only after my club's car show this weekend.
you might want to swap in that govenor then , or at least don't do any WOT shifts .
I'll have to dig out my manual and see what the difference is , I know there are more clutches in the OD DIRECT
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Re: 518 transmission mix-n-match?
[Re: JohnRR]
#474264
09/22/09 11:56 AM
09/22/09 11:56 AM
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Joined: Nov 2006
Posts: 2,255
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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It won't shift WOT if the gov's are diff. The gov in the injection pump will pull the fuel out and the rpm's will stay put and you won't gain speed, you'd have to back out of the throttle to shift and then get back in it, but you probably figured that one out already.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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Re: 518 transmission mix-n-match?
[Re: furious70]
#474265
09/22/09 12:57 PM
09/22/09 12:57 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
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I will use the diesel governor in the diesel tranny. The only differences I can find in the manual are one extra disc and steel in the clutches.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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