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busey
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Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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 Posted: Tue Jan 22, 2019 10:38 am Post subject: 3.88 shopping |
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Gonna be shopping for a swingaxle 3.88 R&P. I've already been burned once on terminology so i better ask now, Are 3.88 R&P all the same or are 'Super Beetle' ones better  thx in advance
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76938
Location: Sneaking up behind you
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| Posted: Tue Jan 22, 2019 10:46 am Post subject: Re: 3.88 shopping |
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Actually its a 3.875:1
I don't remember all the different versions but when I sourced the one in my Berg 5 I got a Klinkenberg.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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ralf
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Joined: July 08, 2008
Posts: 1215
Location: r4
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| Posted: Tue Jan 22, 2019 10:54 am Post subject: Re: 3.88 shopping |
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someone correct me if im wrong
but i think the "super beetle" term is for the first gear 3.78
which often gets confused for the RP...
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76938
Location: Sneaking up behind you
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| Posted: Tue Jan 22, 2019 11:25 am Post subject: Re: 3.88 shopping |
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| ralf wrote: |
someone correct me if im wrong
but i think the "super beetle" term is for the first gear 3.78
which often gets confused for the RP... |
The stock 1st gear in the SSC, late model, tranny was a 3.78:1. These were used in BOTH Standard and Supper Beetle.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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ralf
Samba Member
Joined: July 08, 2008
Posts: 1215
Location: r4
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| Posted: Tue Jan 22, 2019 11:41 am Post subject: Re: 3.88 shopping |
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| Glenn wrote: |
| ralf wrote: |
someone correct me if im wrong
but i think the "super beetle" term is for the first gear 3.78
which often gets confused for the RP... |
The stock 1st gear in the SSC, late model, tranny was a 3.78:1. These were used in BOTH Standard and Supper Beetle. |
yes sir thank you... also isnt this the venerable "super beetle 1st" often written down making it seem like everytime someone gets a rebuilt "pro" tranny... adding $ everttime...
sorry it is OT sorry
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76938
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| Posted: Tue Jan 22, 2019 11:42 am Post subject: Re: 3.88 shopping |
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| ralf wrote: |
| Glenn wrote: |
| ralf wrote: |
someone correct me if im wrong
but i think the "super beetle" term is for the first gear 3.78
which often gets confused for the RP... |
The stock 1st gear in the SSC, late model, tranny was a 3.78:1. These were used in BOTH Standard and Supper Beetle. |
yes sir thank you... also isnt this the venerable "super beetle 1st" often written down making it seem like everytime someone gets a rebuilt "pro" tranny... adding $ everttime...
sorry it is OT sorry |
They also charge more for a 3.75(3.8 r/p.
Basically a late model SSC is a vert strong tranny as built from the factory.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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slalombuggy
Samba Member
Joined: July 17, 2010
Posts: 9147
Location: Canada
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| Posted: Tue Jan 22, 2019 11:44 am Post subject: Re: 3.88 shopping |
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They are not all the same. Get an original VW one.
Super Beetle main shafts refer to the later model main shaft that was stronger and is sough after by drag racers. |
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vwracerdave
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Joined: November 11, 2004
Posts: 15308
Location: Deep in the 405
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| Posted: Tue Jan 22, 2019 11:46 am Post subject: Re: 3.88 shopping |
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The 3.88 R&P were used it late model IRS transaxles, they were never used in swingaxles . Yes, the 3.88 used in Standard Beetle, Super Beetle, and Karmann Ghia's are all the same. Yes you can build a swingaxle using a 3.88 R&P gear.
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vwracerdave
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Location: Deep in the 405
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| Posted: Tue Jan 22, 2019 11:59 am Post subject: Re: 3.88 shopping |
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'71-'72 "Super Beetles" used the weaker 3.80 1st gear keyed mainshaft.
'73 & later "Super Beetles" used the stronger 3.78 1st gear splined mainshaft. The 3.78 was also used in Standard Beetle, Ghia, Thing, Type II and Type III
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mcmscott
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Joined: March 12, 2010
Posts: 4856
Location: sanger ca
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| Posted: Tue Jan 22, 2019 12:02 pm Post subject: Re: 3.88 shopping |
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There is Klinkenburg, Gleason, Chineese, Brazillion, and Weddle to name a few. They are all not the same!!! The strongest German one is the Gleason. Odd because in the 4.12 and 4.37 the K is stronger, but the G 3.88 is stronger. The stoutest 3.88 made is weddle. Also there is no such thing as a super beetle tranny, they are the same regardless of super or not.
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ralf
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Joined: July 08, 2008
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Location: r4
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| Posted: Tue Jan 22, 2019 12:26 pm Post subject: Re: 3.88 shopping |
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thank you racerdave and mcmscott for clarifying that for everyone
the more it is repeated the lesser the stance of the "super beetle" upgrade the advertisements have hahaha LOL
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busey
Samba Member
Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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| Posted: Tue Jan 22, 2019 1:49 pm Post subject: Re: 3.88 shopping |
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Great Info once again!! Wish i would have known the knowledge within this site a couple years ago.
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[email protected]
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Location: Brew City
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busey
Samba Member
Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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| Posted: Wed Jan 23, 2019 8:08 am Post subject: Re: 3.88 shopping |
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Awesome! I'll keep it in mind..
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busey
Samba Member
Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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| Posted: Wed Jan 23, 2019 9:31 am Post subject: Re: 3.88 shopping |
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Trying to figure out some 4th gear RPM combos.
If i can start out by asking if anyone would know what the RPMS @70s MPH would be with;
3.88rp with 1.04 4thgear=?
And
4.12rp with .89 4thgear=?
Thx in advance....
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jpaull
Samba Member
Joined: February 22, 2005
Posts: 3466
Location: Paradise, Ca
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| Posted: Wed Jan 23, 2019 9:37 am Post subject: Re: 3.88 shopping |
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| busey wrote: |
Trying to figure out some 4th gear RPM combos.
If i can start out by asking if anyone would know what the RPMS @70s MPH would be with;
3.88rp with 1.04 4thgear=?
And
4.12rp with .89 4thgear=?
Thx in advance.... |
Gotta know your tire diameter/height to finish the calculation |
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busey
Samba Member
Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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| Posted: Wed Jan 23, 2019 10:08 am Post subject: Re: 3.88 shopping |
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| jpaull wrote: |
| busey wrote: |
Trying to figure out some 4th gear RPM combos.
If i can start out by asking if anyone would know what the RPMS @70s MPH would be with;
3.88rp with 1.04 4thgear=?
And
4.12rp with .89 4thgear=?
Thx in advance.... |
Gotta know your tire diameter/height to finish the calculation |
oops, sorry for the oversight. planning on 215/60/15
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76938
Location: Sneaking up behind you
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| Posted: Wed Jan 23, 2019 10:24 am Post subject: Re: 3.88 shopping |
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| busey wrote: |
Trying to figure out some 4th gear RPM combos.
If i can start out by asking if anyone would know what the RPMS @70s MPH would be with;
3.88rp with 1.04 4thgear=?
And
4.12rp with .89 4thgear=?
Thx in advance.... |
Download my calculator and plug in your numbers.
http://www.glenn-ring.com/tech/tranny_calc.xls
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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ALB
Samba Member
Joined: August 05, 2008
Posts: 3483
Location: beautiful suburban Wet Coast of Canada
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| Posted: Wed Jan 23, 2019 10:53 am Post subject: Re: 3.88 shopping |
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http://www.teammfactory.com/calculator/205/60/15/2...3600/1/0/2
The MFactory gear calculator is really easy to use- just click on any box and change the numbers within. For a list of aftermarket gears available-
https://weddleindustries.com/tech-info
go down the list and click on the pdf for "A Current List of Weddle Gear Ratios in Stock". Note that if you make the spacing between any gears longer, look at what it does to the 'recovery rpm' (shift point).
As usual, just my 2 1/2 cents. Al
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Last edited by ALB on Wed Jan 23, 2019 11:31 am; edited 1 time in total |
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busey
Samba Member
Joined: October 19, 2016
Posts: 420
Location: Sun City Arizona
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| Posted: Wed Jan 23, 2019 11:25 am Post subject: Re: 3.88 shopping |
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awesome thanks guys!
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