Rear end ?

Reply Subscribe

Thread Tools

Search this Thread

Jan 25, 2010 | 08:16 PM

surfer92

Thread Starter

Pro

Joined: Oct 2009

Posts: 679

Likes: 0

From: vero beach florida

Rear end ?

I am going to pickup a new pumpkin tomorrow and I have 2 questions.

1) Where is the G92 stamped on the pumpkin?

2) I cannot remember, do you turn the driveshaft 3 times and the side yoke should turn once or the other way around?

Thanks

Jan 25, 2010 | 08:43 PM

WVZR-1

Team Owner

Joined: Sep 2003

Posts: 25,414

Likes: 2,745

I'm guessing you're attempting to confirm the ratio of what you're calling "pumpkin"? If that's so and it's just the differential with no cover then your ID will be very easy! You only need to count the number of teeth on the ring gear and also the pinion, then it's simple math!!

If it's a rear with the cover you need to remove the cover anyway to check it.

The tooth count will also generally be stamped on the outer diameter of the ring gear!

The information that is "inked" or "etched" on the housing isn't a confirmation of the build. It only confirms the original factory build!!

I assumed you're talking about a D36. Are you?

To answer your question directly! A single complete rotation of the ring gear would result in the the pinion being rotated the equivalent of the axle ratio. 2.79 (2 3/4), 3.07 (3.0+), 3.31/3.33(3 1/3) etc!

Last edited by WVZR-1; Jan 28, 2010 at 08:21 PM.

Jan 25, 2010 | 08:45 PM

C409

Le Mans Master

Joined: Feb 2005

Posts: 6,494

Likes: 566

From: Clearwater Florida

All the important numbers are stamped on the bottom of the main case , including gear ratio ... gear tooth count numbers are stamped into the ring gear also ....... good luck

Jan 25, 2010 | 10:03 PM

tblt44

Drifting

Joined: Aug 2009

Posts: 1,615

Likes: 3

From: Tampa Fl

I think it may be 2 times and count the driveshaft turns to determine gears

Jan 25, 2010 | 10:17 PM

surfer92

Thread Starter

Pro

Joined: Oct 2009

Posts: 679

Likes: 0

From: vero beach florida

Yes it is a D36.

Jan 25, 2010 | 11:49 PM

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

Likes: 31

From: Australia

Quote:

Originally Posted by surfer92

1) Where is the G92 stamped on the pumpkin?

G92 doesn't exist , it is a admin code
It is on the RPO label to show that a optional ratio
( in C4's case; 3.07 , the only one available ) was fitted to the car in place of the std ratio

Jan 26, 2010 | 05:33 PM

surfer92

Thread Starter

Pro

Joined: Oct 2009

Posts: 679

Likes: 0

From: vero beach florida

What is the tooth count on a 3.07 and tooth count on a 2.59?

Lastly, is there anything I can look at to tell if the gears are good, other than the obvious stress cracks?

Thanks!!

Jan 27, 2010 | 11:35 PM

shawn 84&92

Burning Brakes

Joined: Sep 2004

Posts: 1,130

Likes: 19

From: Arkansas

Quote:

Originally Posted by rodj

G92 doesn't exist , it is a admin code
It is on the RPO label to show that a optional ratio
( in C4's case; 3.07 , the only one available ) was fitted to the car in place of the std ratio

3.33:1 was also available in 84, though very rare.