[T3] Type 3 VS Type 4 Final Drive

[Adam Douglass]

Well, I got the transmission today. It is an EM case which means 3.91 gearing.

While I am here at home I decided to pull the output shafts off to see if the type 3 are the same spline count. To my surprise they slid right in...

NOw I am in a debate with myself. Part of me wants to run it with the 3.91 gears and see what happens to performance, mileage and temperature.

The other side of me wants to throw in the other differential and play it safe........but safe is not fun.

I will think it over the rest of my work day and make a decision this evening. Regardless I will have to replace some seals in the new case before I do anything. We will see.

Thoughts?

Adam



On Saturday, January 4, 2014 4:25 PM, Jim Adney <jadney at vwtype3.org> wrote:
 
Adam,

I've checked and it appears that I have complete final drive gasket 
sets (doesn't include the output shaft seals) for $20 as well as just 
the paper gasket between the final drive and the AT for $10. Shipping 
would be on top of that.

I have a mix of gaskets however, and since I've never been this far 
into an AT, I'm not completely sure I'm looking at the right part. I 
have gaskets that are about ~7.25" OD and very similar ones that are 
~8" OD. I suspect the smaller ones are the Type 3 ones, but measure 
what you have and let me know so we can be sure.

The final drive gasket sets include a couple of large paper gaskets, 
2 small paper gaskets for the '69 ATs with the final drive covers, an 
O-ring for the governor cover and another much larger O-ring that I'm 
not sure where it goes.

I also have complete AT gasket sets for $55. These have LOTs of 
little bits and pieces, but do not include any of the 
metal-with-rubber-lip shaft seals. They DO include all the simple 
rubber piston seals.

The output shaft oil seals should be something you can find locally, 
since they were probably used in lots of VWs from that era.

Let me know what you'd like to do.

-- 
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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