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icekoffee
Samba Member
Joined: March 14, 2005
Posts: 1239
Location: DeSoto, Missouri
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 Posted: Fri Apr 17, 2009 8:20 pm Post subject: 71 Super gearbox in a 74 Super |
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I have a 74 super vert that need a new trans. The trans in it now has a 3 bolt front mount. THe 71 super trans that i have to replace it has the 2 bolt front mount. Will i be able to just swap the nose cones and bolt it up? Will i be able to use the same type of pressure plate and throw out bearing that is on the 74 trans on the 71 trans?
Thanks
Andrew
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1952 Zwitter
1959 23 Window
1963 Doubleturd
1958 Patina Beetle EJ25
1984 Vanagon Westfalia EJ25
1964 Lifted Mouse Grey Standard
1967 21 Window
1968 Double Bubble
1969 Westfalia
1961 Ragtop Beetle
1984 GTI
1961 Kombi |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76904
Location: Sneaking up behind you
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| Posted: Fri Apr 17, 2009 8:23 pm Post subject: |
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Yes... just swap the nosecones.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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icekoffee
Samba Member
Joined: March 14, 2005
Posts: 1239
Location: DeSoto, Missouri
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| Posted: Fri Apr 17, 2009 8:25 pm Post subject: |
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you are fast glenn lol
thanks man. my wife will be happy to have reverse 
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1952 Zwitter
1959 23 Window
1963 Doubleturd
1958 Patina Beetle EJ25
1984 Vanagon Westfalia EJ25
1964 Lifted Mouse Grey Standard
1967 21 Window
1968 Double Bubble
1969 Westfalia
1961 Ragtop Beetle
1984 GTI
1961 Kombi |
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Mikedrevguy
Samba Member
Joined: October 15, 2008
Posts: 2237
Location: Medford, OR
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| Posted: Sat Apr 18, 2009 12:24 am Post subject: |
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x2 what glen said.
Had the same problem - lost reverse: but put in a 71 trans. swapped the nosecone and hockey stick and all was well.
good luck
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74 1303 (RevBug): plan for German Look
76 914 with 2260
79 VW Iltis
69 Bwajaja
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kevin11
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Joined: March 12, 2004
Posts: 828
Location: Arlington,Texas
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| Posted: Sat Apr 18, 2009 6:04 am Post subject: |
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| THe only thing is is that the 71 trans and the 74 have different 4th gearing. If it is an original 74 trans,it is a stockl fwy. flyr.single sideplate. the 71 would have dual sideplates.Like glenn said.. just swap the noses and be careful you don't tear the gasket. or get a new one. |
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wbrown45
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Joined: July 08, 2008
Posts: 1318
Location: ada, ok
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| Posted: Sat Apr 18, 2009 8:21 am Post subject: |
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The'71 should have a 4:12 ring and pinion, and the '74 should have a 3:88. You will like it on the freeway.
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Bruce
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Joined: May 16, 2003
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Location: Left coast, Canada
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| Posted: Sat Apr 18, 2009 11:48 am Post subject: |
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| wbrown45 wrote: |
| The'71 should have a 4:12 ring and pinion, and the '74 should have a 3:88. You will like it on the freeway. |
The difference on the freeway is indiscernable since 4th gear was also changed to negate the effects of the taller R&P.
The real difference is in the lower gears. With the early gearbox, the car will accelerate better in the first 3 gears.
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wbrown45
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Joined: July 08, 2008
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Location: ada, ok
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| Posted: Sat Apr 18, 2009 3:27 pm Post subject: |
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You are saying that 4th is a lower ratio than the .89 that the earlier ones came with? My 74 trans had an .89 when I tore it down. It might have been swapped.
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wbrown45
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Location: ada, ok
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| Posted: Sat Apr 18, 2009 3:37 pm Post subject: |
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I found a listing for the '74 and it is supposed to have a .88 4th. It works out to a 3.41 final drive with a 3:88 R&P. A .82 fourth with a 4:12 would give you a 3.38 final drive, so it would not be much different at freeway speeds. Obviously my transaxle had been "changed." It worked great with a 3.18 final drive at 70 +.
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Joel
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Location: NSW Australia
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| Posted: Sat Apr 18, 2009 4:53 pm Post subject: |
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i've done the same thing as well when i rebuilt the stock tranny for my 74 super i chucked in the one out of my 71 super with a 3 bolt nose cone
the difference isnt noticable in top speed or accelaration
at 100km/h it went from 2950rpm to 3000rpm 
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kevin11
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Joined: March 12, 2004
Posts: 828
Location: Arlington,Texas
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| Posted: Sat Apr 18, 2009 8:35 pm Post subject: |
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| oooo...a whopping 70mph!! Better get out a drag chute to slow it down!! I did say they were different. And true..you won't be winding out second and third in the city like with the 74 trans.But, will notice it the rpms on the long drive. |
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Bruce
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Joined: May 16, 2003
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Location: Left coast, Canada
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| Posted: Sun Apr 19, 2009 12:18 am Post subject: |
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| wbrown45 wrote: |
| I found a listing for the '74 and it is supposed to have a .88 4th. |
The listing you found is wrong. 4th gear is a .93. If you do the math, it negates the effect of the taller R&P. If you found a .89 in your gearbox, either someone put it there after VW, or you had a relatively rare 73-74 Karmann Ghia gearbox (which came that way from VW).
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| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
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wbrown45
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| Posted: Sun Apr 19, 2009 5:07 pm Post subject: |
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I guess specifications found were wrong. All I know is the 3:88 is a good ration on the freeway. Many agree, some will not.
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Bruce
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Location: Left coast, Canada
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| Posted: Sun Apr 19, 2009 11:49 pm Post subject: |
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| wbrown45 wrote: |
| . Many agree, some will not. |
This is not up to personal opinions. The gear ratios don't lie. Swapping to a stock Bug gearbox that has a factory installed 3.88 does not alter your freeway driving because the final drive ratio in 4th gear is the same as what's in the earlier 4.12 gearbox.
Those people who swear there's a difference are just imagining it.
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| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
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