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Transmissions For Dummies
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trismoney
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PostPosted: Sat Apr 25, 2020 7:07 am    Post subject: Re: Transmissions For Dummies Reply with quote

Can any one help me ID a transmission. Its out of a bus. Swing Axle Stamping on the side says 113.301.103 and H4626875? I can seem to find any information with the H code. Does that mean is 12v or 6v?
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PostPosted: Sun Jan 12, 2020 1:06 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Hey guys, so Iím looking for some clarification between a 3-rib and 5-rib transmission.
3-rib - CK (1700) type 4 engine
5-rib - CM (1800) type 4 engine

Which would be best to pair with a 1600 type 1 engine?

Iíve also measured the input shafts in both the 3-rib (type 4 engine) and the 5-rib (has been running with a type 1 engine) from the throwout bearing guide tube end to the end of the input shafts. Both measure 2 3/4Ē. Isnít the input shaft in an 002 needing to be shorter to be used in a type 1 engine?
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gears
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PostPosted: Mon Oct 14, 2019 12:55 pm    Post subject: Re: Transmissions For Dummies Reply with quote

This Vanagon thread should be shared with the off-road forum. It's about significantly beefing up a Syncro transaxle, most of which applies to 091/1 as well.
https://www.thesamba.com/vw/forum/viewtopic.php?t=725130
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PostPosted: Mon Jun 03, 2019 3:01 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Hello, looked thru all 28 pages and could not find info for thing transaxle. I have read somewhere in all this vast amounts of information that some thing transaxles had LSD diffs.

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Trans code ( A 122 6 3 )
The number 1 appears to be upside down.
Thanks Brett
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PostPosted: Fri Apr 12, 2019 1:10 pm    Post subject: Re: Transmissions For Dummies Reply with quote

I have a question for the Bug transaxle Gurus. My plan is to use the Rear suspension section, with Transaxle. I want to Make into a Front wheel drive rear wheel steering Reverse trike. I want use a adaptor plate for Warp9 electric Motor to the transaxle and transform it into a Front wheel drive fixed front wheels and a single rear wheel that is steerable. To me it looks like I just need to flip the diff over, I will Not be Flipping the trans as it will stay in it's original mounting orientation, as it will be running it Front wheel drive, I believe just the diff needs to be flipped over? and all is well. With an electric motor it will run in either direction.
Anything I should be aware of on the VW transaxle (I will be Beefing Up the transaxle) running it as a Front wheel drive.
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dustymojave
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PostPosted: Tue Jul 03, 2018 3:01 pm    Post subject: Re: Transmissions For Dummies Reply with quote

If it were swing axle suspension, there would be no need to invent a different from swingaxle reduction gear box for the end of the axle with a u-joint on the inboard side as swingaxle reduction gear box axles already existed. This MUST be for an IRS suspension and the RGB MUST attach to a trailing arm. There is no other reason for this to exist. The gear box probably was an IRS tunnel case Bug box.

Obviously the generalization that the vehicle was built with split window mechanicals was, like many generalizations, not entirely true.

The shaft almost certainly has the rest of the u-joint not shown in the picture of the reduction box above. And it probably is a shaft with a slip joint built into it. And it very likely has a similar u-joint at the inboard end where it attaches to the output flange of the gear box.
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PostPosted: Thu Jun 28, 2018 11:33 am    Post subject: Re: Transmissions For Dummies Reply with quote

Thanks both. I'd love to see the complete unit with axles to get an idea of how it worked.

From the description on that website, I didn't think they'd use IRS, as it says that those buses used splitscreen mechanicals. I figured it was an attempt to maintain the correct camber with spring plates.

Looking at those pictures, would the clamps grip a T-piece on the end of the axle that held the UJ (or one of them, if there was one at each end) in contact with the input shaft to the reduction box?
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PostPosted: Thu Jun 28, 2018 12:52 am    Post subject: Re: Transmissions For Dummies Reply with quote

That MUST BE what those are!!!

But if there is no IRS trailing arm, I would think that would be VERY weak and flimsy with trouble maintaining camber. Maybe there's an IRS arm that it bolts to along with the spring plate. IRS with RGBs is pretty damned cool!
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PostPosted: Wed Jun 27, 2018 11:36 am    Post subject: Re: Transmissions For Dummies Reply with quote

I wonder if that is what these are from. I have had them for some time now.

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PostPosted: Wed Jun 27, 2018 11:31 am    Post subject: Re: Transmissions For Dummies Reply with quote

By that description, I would say they had a T1/T3 IRS tunnel case gearbox with different drive flanges; IRS arms and stub axles unique to that model of Bus; and axle half shafts between the gearbox and trailing arms that had u-joints on the ends and probably slip splines to allow for varying axle shaft length requirement as the wheel moves up and down. Probably very similar axles to a Datsun 510 or 240Z.
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PostPosted: Wed Jun 27, 2018 10:41 am    Post subject: Re: Transmissions For Dummies Reply with quote

Apologies for adding to an old thread, but does anyone have any images of the unusual transmission fitted to 1976 South African "Brasilia" (or "1600") Bay/Split hybrid bus described in this link... https://www.aircooledvwsa.co.za/viewtopic.php?t=9014

Description...

Quote:
1976 saw VWSA replacing the Fleetline at the bottom of its bus range with the later Brazilian bay/split hybrid. The bay/splits were known simply as "1600" or "Brasilia" ... They were mechanically a splittie, except they had 72-78 taillights and a bay front grafted on to the splittie rear body. They had reduction gearbox transmissions, but with double-jointed axles, with universal joints instead of CVs.


I read about it a while ago, but a post in the Split Screen forum reminded me. I can't find any images online. I'm just curious to see one looked like.
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PostPosted: Thu Dec 28, 2017 11:54 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Nope....It's not for bus gearboxes. It's for gearboxes in VW Bug - based offroad vehicles.

The model number of the gear box will tell if it was originally for a 6V or 12V application.

But so will the interior of the bellhousing. And since many of the 6V gearboxes have been in cars converted to 12V over the past 50+ years, many of them will have the bellhousing clearanced for the bigger flywheel. Many gearbox casings will have been re-used for rebuilt gearboxes by now too.

So look at the interior of the bell housing. If the upper sides of the bosses for the lower engine studs are nearly paper thin, it's been clearanced for 12V. But if the same bosses are about 3/16" thick, then it's still for 6V. It's not a big deal to clearance for 12V. It does NOT require any special equipment. I 1st did the job back in the early 70s with a hand held drill with a rotary file bit. Maybe 45 minutes including a couple or 3 test fits and it was done. You can usually look at the upper part of the bell housing for evidence of the rotary cutter for clearance in a 12V trans while a stock 6V has little to no cut in the upper part where it would be mostly as cast.
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PostPosted: Thu Dec 28, 2017 10:47 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Hey I know this forum is for bus tranys .However ,I give it a shot .How can I determin a 6volt vs a 12 volt .USING THE NUMBERS ON THE CASE?I know you can get a flywheel and see if it fits.But when at a swap meet this is not possible.So I wonder if the numbers can tell me if it is a 6v,or a 12v.Thx
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PostPosted: Sun Oct 22, 2017 10:16 am    Post subject: Re: Transmissions For Dummies Reply with quote

Hi Guys.
I have acquired a CE code type 2 gear box that I want to use In my type 2 into type 1 conversion. (swing axle chassis).
Is this trans a good one to start with. It has no ears on the bell housing hence I think its an early. Code is CE 125 0355
Engine Is type 4 turbo.
Can I beef up this box
Cheers from Vw gearbox noob Cool
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PostPosted: Sun Jul 16, 2017 5:57 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Must be a case of supply and demand... he can probably charge what he wants when there isn't anyone else reputable...
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PostPosted: Sun Jul 16, 2017 11:44 am    Post subject: Re: Transmissions For Dummies Reply with quote

You may Be right about the first gear.
I'd love to take it to a VW specialist but as You said there
Is only Steve's auto for trans work on oahu.
He is very nice and I'd like to support a local business, but
But his rates are steep (like triple the cost of a rancho rebuild) and his warranty isn't as good. I will repost on the baywindow forum.
Aloha!!

KP
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PostPosted: Fri Jul 14, 2017 7:43 pm    Post subject: Re: Transmissions For Dummies Reply with quote

Why aren't you going to VW-specific shops? Steve's VW may be the only place doing van transaxles right now.

It sounds like your problem was merely a misadjusted shifter in the beginning .. but now that it's been driven without fully engaging 1st gear, the flanks of that gear have worn oddly, which is why it now pops out of 1st gear.

You'll probably get more feedback in the correct Bay window forum ..
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PostPosted: Fri Jul 14, 2017 11:25 am    Post subject: Re: Transmissions For Dummies Reply with quote

I have a 76 bay window that I am considering having the manual transmission rebuilt. I'd love some input before I pull the trigger on a full trans rebuild. I've already had the bus to two shops locally and they are not sure. Both think it may be an internal trans issue (neither are vw shops). I'd love any input since having it rebuilt entails shipping it to/from hawaii at significant cost. It should also be noted that it was recently rebuilt by a shop in oregon less than 2 years ago (by PO).
Currently I am not able to get it into first gear. If using the shifter, engine on, it makes a grinding sound, doesn't go into gear. If engaging first manually from the shift selector at the nosecone (engine off), it will sort of go into gear then pop out upon acceleration. 2,3,4,R work properly.
Things we've already tried: shift plate adjustment, replaced bushings, replaced coupler.
Im considering going with Rancho for my stock rebuild. It has stock pancake engine with single progressive carb.
I'd really appreciate any help as frustration is definitely setting in Wink


Kevin
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NoBudgetVWGarage
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PostPosted: Tue May 23, 2017 8:46 am    Post subject: Re: Transmissions For Dummies Reply with quote

dustymojave wrote:
NoBudgetVWGarage wrote:
I have an 091 as well in my 72 but leaking from the bellhousing area soaking the clutch. I know there is a seal near the nosecone.. (may be causing previous posters^^ leak) but is there one in the bellhousing area as well?


Yup, from across the AV Cool , there should be a seal around the input shaft.


been a while Richard!
Ill pick up the seal today since the engine is out. Getting ready for Blackstar/Prado.
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PostPosted: Mon May 22, 2017 10:50 pm    Post subject: Re: Transmissions For Dummies Reply with quote

NoBudgetVWGarage wrote:
I have an 091 as well in my 72 but leaking from the bellhousing area soaking the clutch. I know there is a seal near the nosecone.. (may be causing previous posters^^ leak) but is there one in the bellhousing area as well?


Yup, from across the AV Cool , there should be a seal around the input shaft.
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