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  View original topic: changing ring and pinion.
68beetleman Tue Nov 18, 2008 5:18 am

i have a 3.88 r&p tranny i came across. but my bug wont pull it. and i want to change it back to stock. i am seventeen and in the progress of rebuilding my first motor. could any one tell me the steps involved in swapping them out and if i can do it? or do i need a specialist ? and the stock r&p ratio. thanks

bon2198 Tue Nov 18, 2008 6:17 am

you can do anything yourself if your comitted enough. buy the bug me videos.... you'll thank yourself, and your car will thank you too.

li_gangyi Tue Nov 18, 2008 6:17 am

You'd have to pull all the gears in the transmission out. Not something easily doable.

You will need access to a press, have a shift fork jig, and have the tool to set backlash for the ring gear.

morymob Tue Nov 18, 2008 6:26 am

How tall are your tires? try smaller,easy way to get a "ratio change effect". Taller tires than stock kill your power.

vwracerdave Tue Nov 18, 2008 6:27 am

3.875 R&P is a stock size. You need special tools to do the job and it requires completly tearing apart the whole transaxle. The bentley repair manuals have a chapter on rebuilding a gearbox. Look it over then decide if this is something you want to do.

towd Tue Nov 18, 2008 9:58 am

These tools / jigs can be made from an old trans case....
3:88 is stock,, why won't your car pull it,, when everyone else's will ?

68beetleman Wed Nov 19, 2008 6:27 pm

really the 3.88 ring and pinion is stock?? another guy on the samba said that my 1600cc wont pull it. the tires are stock size just a tad wider.

Sean Stibi Wed Nov 19, 2008 6:50 pm

My dad put one of these transmissions together at around your age (my age too) and he never had any problems. If you are a perfectionist and want everything to go together perfectly and will not put it together until it is, I don't think you will have too much of a problem.

I just rebuilt my first VW engine and I am annoyed. It leaks oil out of ONE spot and one spot only. One of the 17MM case nuts did not seal so it leaks right there.

Well, I am going to rebuild the trans in my '68 because it is just straight up screwed. There is no nicer way of putting that. But I have a press along with a lot of other stuff.

My point of view on people saying that you cannot rebuild without special Expensive tools and stuff is just annoying. I have to admit But some tools are required like a press, piston rung compressor, valve spring compressor, and a torque wrench (Some people use a torque wrench on way too many things). People are afraid of going in and building their own engine and I don't know why, It is not hard and you won't screw it up if you take your time to do everything right. I did my first and I got ONE thing wrong. The distributor drive gear was exactly 180* off (but that was fixed easily).

Bruce Thu Nov 20, 2008 3:14 am

Sean Stibi wrote:
My point of view on people saying that you cannot rebuild without special Expensive tools and stuff is just annoying.
Without the expensive tools, it just takes a LOOOOOOONG time.
The one thing that is needed that you don't have now is experience. You need to be able to look at a synchro cone and know if it will pop out of engagement or not. Same goes for the sliders. And the forks. And on and on.

Sean Stibi Thu Nov 20, 2008 9:43 am

I have built transmissions before, just not a VW trans.

benchracer1 Sat Nov 29, 2008 8:49 pm

The best teacher is experience. Just do it and see what happens. Take your time and dont get sidetracked IE: phone calls and text messages LOL



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