RING AND PINION TEETH

[eduardocastrejon]

Please help me with this:

I know that I can't use brazilian gears in german case, what about ring and pinion, I installed a 3.88 ring and pinion on a brazilian case, can I use this 3.88 ring and pinion on a german case or is diferent ?

If I have several rings at my hand how can I know whic ring is 3.88, 4.12 or 4.37 ?

how many teeth I need to count ?

4.12  =  ?
4.37  =  ?
3.88  =  ?

[superdrag]

The way I figure it out  is just count the ring gear teeth, count the pinion teeth, and divide them.  Thats the ratio.

[roscoesvw]

The way I figure it out  is just count the ring gear teeth, count the pinion teeth, and divide them.  Thats the ratio.

x2

[eduardocastrejon]

thanks

4.37  =  35/8=  4.375
4.12  =  33/8=  4.125
3.88  =  31/8=  3.875


Now I need to know the 3rd and 4 gear

1.04 = ?

1.36 = ?

[Bruce Tweddle]

Now I need to know the 3rd and 4 gear

1.04 = ?

1.36 = ?

Count the teeth and divide.

[eduardocastrejon]

ok, thanks

I already have an aftermarket 3.88 r&p on my brazilian swingaxle trans.

Can I use this 3.88 r&p into a garman case irs ?

[Bruce Tweddle]

You can use any Type 1 R&P in any Type 1 case. 

However, changing the R&P requires plenty of other parts swaps to make it all work.

[superdrag]

My drag car has a 3.88 in an early case.  Actually, my box has parts from about 4 different tranmissions, plus aftermarket parts.  Just have to use  the mainshaft and some gears from the later trans as I recall.  Really going back a while here, but as I recall, I have the mainshaft and ring and pinion from a 76, a case from a 72, (dual side cover with big pinion nut) axle tubes from a pre 66, and I can't remember what else.  Luckily it has held up well so the details aren't fresh in my mind!

*edit, Oh, I just noticed that you are talking about an irs with a 3.88, so my rambling doesn't really apply here, sorry.

[eduardocastrejon]

I have this stock vw type 1 ring and pinion

4.62  =  37/8=  4.625
4.37  =  35/8=  4.375
4.12  =  33/8=  4.125
3.88  =  31/8=  3.875

but what about the 3.44 ?, it an original vw  ring and pinion too ? or aftermarket

3.44   =  31/9 =3.44444 ?
is the same ring as 3.88 but with 9 teeth pinion ?
who sells the 3.44 ? exist for both swing axle and irs ?

here is a photo of the evasive a rare 4.62 with open dif, near of zf LSD

and the oem 1.04 and 1.36 (1piece not welded cup)



I saw this ad from bruce and yes , it is 9/31 r&p
http://www.thesamba.com/vw/classifieds/detail.php?id=982784

is this aftermaket ?

[Bruce Tweddle]

is this aftermaket ?

Eduardo, go back to my ad on the Samba and read the second sentance.