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-   Volvo 240, 740 & 940 (https://volvoforums.com/forum/volvo-240-740-940-12/)
-   -   Rear end swap question (https://volvoforums.com/forum/volvo-240-740-940-12/rear-end-swap-question-14983/)

act1292 Nov 9, 2007 01:31 PM

Rear end swap question
 
I had a nice '89 240 Wagon till last month when my son totaled it in an accident. I found a reasonably good '91 240 Sedan that was dirt cheap and am using the '89 as a parts source to get the 91 back up and running.

Once concern I had about the '91 is that the rear differential had a leak so I am worried that it may be worn. The '89 was in good shape and I know the history behind it so I was considering swapping the whole rear end from the 89 into the 91.

The question is, is there any difference in rear-end ratios that I need to be concerned about (like incorrect speedometer readings)?

Also, is this a big job? At first glance, it seems to be fairly straightforward to swap.

Any advice would be helpful.

onryboy Nov 9, 2007 05:02 PM

RE: Rear end swap question
 
(w/speed sensor), 3.31 ratio
(w/speed sensor), 3.54 ratio
(w/speed sensor), 3.73 ratio




1987
Rear Axle
Volvo 240
DL,CHK COND


050296

Mossy Head Auto Parts USA-FL(Crestview) E-mail 1-850-892-5333/1-800-892-6017
767

1990
Rear Axle
Volvo 240
(w/spd sensr), 3.31 ratio-
135,000
A
01-233

French's Auto Parts, Inc. USA-VA(New-Market) E-mail 1-800-443-1303
225

1990
Rear Axle
Volvo 240
(w/spd sensr), 3.31 ratio- guessed-UJA
199,000
A
14521

Abcat Auto Salvage USA-MI(Ypsilanti) Request_Quote 1-800-869-6933 Request_Insurance_Quote
134

1989
Rear Axle
Volvo 240
3.31 ratio-
227,000
C
LG003

Erie Vo-Vo, Inc. USA-NY(Whitesboro) E-mail 1-888-865-8613
345

1991
Rear Axle
Volvo 240
CK RATIO
118,000
A
000633

Davidson Auto Salvage USA-NC(Lexington) E-mail 1-336-956-1219 1-800-365-8098
373

1984
Rear Axle
Volvo 240
CHECK ID,1429039
218,752

act1292 Nov 9, 2007 10:18 PM

RE: Rear end swap question
 
I don't need another rear axle. I am trying to find out if the one I have (from an '89 240 DL Wagon) is a straight up replacement for a '91 240 Sedan.

onryboy Nov 10, 2007 06:33 AM

RE: Rear end swap question
 

ORIGINAL: act1292

I had a nice '89 240 Wagon till last month when my son totaled it in an accident. I found a reasonably good '91 240 Sedan that was dirt cheap and am using the '89 as a parts source to get the 91 back up and running.

Once concern I had about the '91 is that the rear differential had a leak so I am worried that it may be worn. The '89 was in good shape and I know the history behind it so I was considering swapping the whole rear end from the 89 into the 91.
.................................................. .................................................. ..........................
The question is, is there any difference in rear-end ratios that I need to be concerned about (like incorrect speedometer readings)?

YES
(like incorrect speedometer readings)?
(w/speed sensor), 3.31 ratio
(w/speed sensor), 3.54 ratio
(w/speed sensor), 3.73 ratio

year range that will fit your 1991 240 is

1984 Rear Axle Volvo 240 - CK RATIO
1991 Rear Axle Volvo 240 - CK RATIO
.................................................. .................................................. ......................
Also, is this a big job? At first glance, it seems to be fairly straightforward to swap.

Any advice would be helpful.


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