Building a strong gearbox with 95% OEM parts

[benozoval56]

[ALB]

[nsracing]

YOu people certainly have too much time on your hands.

I once saw a flywheel w/ several dozens drill holes in it. Maybe improve the performance of pistons by drilling right thru the top of it?

[benozoval56]

[nsracing]

Looks like you are going far from the reservation. Maybe you are one of those who just wakes up one day and be good at transmissions. YOu may want to slowdown cutting stuff. Bernie Bergman did many things to the VW engines. -just saying.

I started out sticking exactly to the Bentley manual when I built my first trans and used that for years -put me thru school. Then somewhere along there, I built many more for others. Since I have had my machines I did more mods required in drags and learned a bit more on what not to do on the parts.

If this is gonna be your trans, so be it - modify as much as you want. But I sure hope you will not do these to customers' trans if you ever decide to do them for money.

But I am truly enjoying myself watching this thread.

[benozoval56]

Quick question on the Super Diff.

Can 10T spiders and 15T side gears be used without ant further modifications required?

[[email protected]]

Most that use the 15/10 tooth combo gears in a swing axle diff are using two spider gears in an oem housing. If you want a super diff, you’re going to have to find a NLA used/nos one specifically made for the 15/10 tooth gears. All of the modern new commonly available super diffs are made for the more common 17/11 combos, and the 15/10 gears will not mesh properly with 4 spider gears.

[rustybug1990]

What kind of power numbers should this be able to handle? I'm not sure what exactly I want to build yet but I know it will be close to 2.0L and turbo charged. Is this something that would be worth my time or should I just but another unit?

[rustybug1990]

Bump

[benozoval56]

[rustybug1990]

So any idea what kind of launching punishment could this handle?

[Clatter]

How long is a fish?

I’d say a transaxle built like shown here could pretty much handle anything you could throw at it if you’re running street radials.

If you’ve got slicks and are hitting the water box and doing a burnout at the strip,
Then you might be pushing your luck.

Or if you’re on the throttle bouncing off the rev limiter while airborne in a desert car..
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[rustybug1990]

Thank you very much, put just how I can understand it.

[Stocknazi]

I've got a few questions about using a Type 1 or Type 3 IRS transmission to build for a split window bus (61-67 tunnel mount unit). This thread seemed like a good place to ask.

No lowering, stock height with reduction boxes.


I've got a few transmissions that I may decide to use as a core to rebuild for this bus.
I have:

Type 3 IRS
Type 1 IRS
Type 3 swing axle

Are any of these units good to use as a base for a stock height bus?
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[Millionmph]

This is real good stuff, i just finished my new motor and the gearbox in the car has a bad 3rd synchro and someone i think swapped 4.375 into it (early IRS) and it revs like 3200 at 60 with a 205 65 15; I just scored a late single cover IRS with 3.88s in it and this is going to help address any concerns that that one might have; Question for OP though, what is the difference in an IRS ring/pinion setup compared to the swingaxle fixes you did? ie the spider gears, is there such a thing as 15 and 10 spiders for an IRS??? or are we stuck with 11 tooth spiders? Can older spiders be made to work or are they a different creature?

[ngobet]

[rodgersbadassbus64]

“B e careful swapping the 3.88 r/p. Sure that will drop your rpm but also decrease the hp at the wheel by 11%.”.

Why?
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Like some other respectable members, "why buy what you can build"

[Arc Eye]

Great post here, really helpful inputs from all

Do you have a list of parts that are needed from Weddle as finding it difficult to work out what is needed exactly so i can mail order them without any problems

Im looking at a master rebuild kit from Rancho and the rest from Weddle for a comprehensive rebuild to a stronger transaxle

Would be great to see a parts list needed to complete a really solid build using the ideas here. I only started to look as i picked up a Bugpack Super Diff for my swing axle and thought i could do more...down the rabbit hole i go!

[vincenzolorenzo]

I'm rebuilding a stock late style transmission with the splined main shaft. When I assemble the mainshaft i'm getting way too much clearance at the 4th gear thrust washer, 0.50mm. I've tried a few different combinations of 3-4 slider hubs and different 4th gears in case one of those parts was wrong but getting same clearance everytime. Can see with your eye that the 4th gear bearing race journal on the shaft is sitting noticeably proud of 4th gear.

Have never had this issue before, if anything the clearance is too tight and a light linish on the gear is needed to get it to the 0.10 - 0.25 mm range.

I'm stumped on this one, can anyone shed some light on what the issue might be and what I could do to resolve?