3.88 Ring & Pinion gear

vwracerdave · Posted: Sun Jun 04, 2006 7:32 pm Post subject: 3.88 Ring & Pinion gear

Are the new Brazilian 3.875 R/P gears that are being sold for $110 as good as an original 3.88 out of a late tranny for a 12 second drag car? Or would I be better off tearing apart a few trannys until I find a good used one?
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2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

Glenn · Posted: Sun Jun 04, 2006 7:34 pm Post subject:

I can't say about the Brazilian ones, but it's hard to beat a German Klinkenberg r/p.
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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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Alan_U · Posted: Sun Jun 04, 2006 10:31 pm Post subject:

I'd go with a used klink or ottinger. A 3.88 Glieson will be even strong in the 3.88 r/p realm for a 12 second drag car. In time they will all fracture.

Call up a reputable tranny builder and ask. That'd be good info to know.
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HBRag · Posted: Sun Jun 04, 2006 10:31 pm Post subject:

What about nitrating the Brazilian gear?

nsracing · Posted: Mon Jun 05, 2006 5:31 am Post subject:

I do not bother with the Brazilians. There are plenty of stock German 3.88 around. I stash a few of them... 20 sets or so I have taken out of late cases. Let me know if you still need them.

You need 3.78 mainshaft too?

I do not know of anyone running Brazilian Ring/Pinions in this neck of the woods. Razz

The German stocks are hard to beat.

gears · Posted: Mon Jun 05, 2006 8:13 am Post subject:

The Brazilian ones are somewhat brittle and will break fairly quickly in drag race use, although they're OK for lower horsepower road race use. The 3.88G has proven more reliable than the 3.88K for drag racing (although I would certainly agree that the 4.37K is much stronger than the 4.37G).

vwracerdave · Posted: Mon Jun 05, 2006 3:04 pm Post subject:

The bad one has a G831 on it . Is that the Glieson?

Thanks for your help. I'm still learning about tranny internals.
_________________
2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

Mielke · Posted: Mon Jun 05, 2006 5:48 pm Post subject:

What trannies tended to have 3.88? I would like a set myself. I have a 73 IRS manual from a standard beetle & a '65 swing axle tranny. Is there a way, with out tearing them apart, to tell if any of them had a 3.88 that I could use in my '66? Is it even possible to put the 3.88 r&P from a later swing axle into an IRS? I am assuming this is a huge jobe regardless?
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Greg
1966 Canadian Standard Beetle
1967 Beetle

Glenn · Posted: Mon Jun 05, 2006 6:34 pm Post subject:

Late SSC trannys have them.
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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"

Member #1009

#BlueSquare

Bruce · Posted: Tue Jun 06, 2006 12:45 am Post subject:


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