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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 20, 2018 06:24PM

They use these on Water cooled Vangons / Synchros...

Why would you need a longer input shaft?...

The Vair to VW adapter puts the VW input shaft in the right place..

The Subie to VW adapter puts the input shaft in the right place...





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Re: NEWS FLASH: Subaru transaxle
Posted by: Phil Dally ()
Date: February 20, 2018 06:37PM

Wonder if it will operate correctly upside down...axle height solved.

In a racecar who cares if the AWD yoke is there...just let it free spin.

Cut a hole in the back seat area and build an idiot screen of some kind.

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 20, 2018 06:47PM

FAQ's
[subarugears.com]





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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 20, 2018 06:52PM

JDM's offerings on ebay ty755 transaxles

[www.ebay.com]





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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 20, 2018 07:05PM

MattNall Wrote:
-------------------------------------------------------
> They use these on Water cooled Vangons /
> Synchros...
>
> Why would you need a longer input shaft?...
>
> The Vair to VW adapter puts the VW input shaft
> in the right place..
>
> The Subie to VW adapter puts the input shaft in
> the right place...


Ok Matt, maybe we are having a communication issue here.
How are one of those adapters meant for a VW engine going to bolt to a Corvair engine? You can't stack the adapters. You need to make an adapter that has the Corvair engine block pattern that the bell housing bolts to on one side and the Subaru transaxle bell housing pattern on the other. What would you use for flywheel and pressure plate? Starter?

Lee J

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 20, 2018 07:27PM

Why can't you stack? Have you ever done a Vair on VW conversion?





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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 20, 2018 07:39PM

MattNall Wrote:
-------------------------------------------------------
> Why can't you stack? Have you ever done a Vair on
> VW conversion?


I wouldn't stack as you will no longer have the end of the input shaft supported in the crankshaft or will have to make a spacer the same thickness of the second adapter to move the entire flywheel/clutch closer to the transmission AND to relocate the pilot bearing.
I have never done the conversion but have had hands on plenty of air cooled VW's and a Corvair engine with a Crown VW adpater plate.
From an engineering stand point you would be best to make a Corvair to Subaru specific adapter plate to keep it as thin as possible

Lee J

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 21, 2018 06:48PM

gnvair Wrote:
-------------------------------------------------------

> I wouldn't stack as you will no longer have the
> end of the input shaft supported in the crankshaft
=========================================================

As I wrote earlier...

The Vair to VW adapter MIMICS the VW cases...so it's really not an adapter PLATE, in this case...





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Edited 1 time(s). Last edit at 02/24/2018 01:22PM by MattNall.

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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 21, 2018 08:34PM

MattNall Wrote:
-------------------------------------------------------
> gnvair Wrote:
> --------------------------------------------------
> -----
>
> > I wouldn't stack as you will no longer have the
> > end of the input shaft supported in the
> crankshaft
> ==================================================
> =======
>
> As I wrote earlier...
>
> The Vair to VW adapter MIMICS the VW cases...so
> it's really not an adapter in this case...

I understand that BUT the thickness of the aluminum between the bell housing and the adapter means the input shaft is that much further from the crank flange..........just saying. I'll wait for someone else to spend the time and money on this one.

Lee J

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 21, 2018 08:44PM

Not a bellhousing!! gg












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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 22, 2018 04:12AM

MattNall Wrote:
-------------------------------------------------------
> Not a bellhousing!! gg
>
>
>
>
> [ssli.ebayimg.com]
> /s-l640.jpg
>
> [ssli.ebayimg.com]
> /s-l1600.jpg

I know the Corvair to VW is not a bell housing. But how is that Crown adapter going to bolt to the Subaru bell housing? You still need an adapter! You need to start from scratch and make a new adapter that bolts to the Corvair on one side and Subaru on the other side like I have been saying rather than "stacking".

Lee J

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Re: NEWS FLASH: Subaru transaxle
Posted by: wv-geo ()
Date: February 22, 2018 06:35AM

I think what MattNall is trying to say is that when you install the VW to Corvair adapter to the Corvair engine the end result looks like the flywheel side of a VW engine.
Attached are pictures of the flywheel side of a VW engine and a Corvair engine with a VW adapter.
The mounting surface and depth (offset?) of crank flange to the mounting surface look the same.

So using two adapter plates shouldn't be a problem.

Dan Stark
Hurricane, WV

1961 Lakewood 500, 80HP, PG
1964 Corvair 500 Coupe, 140HP, 4spd (Christine)
1965 Mustang Coupe, 6cyl, 3spd

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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 22, 2018 06:45AM

wv-geo Wrote:
-------------------------------------------------------
> I think what MattNall is trying to say is that
> when you install the VW to Corvair adapter to the
> Corvair engine the end result looks like the
> flywheel side of a VW engine.
> Attached are pictures of the flywheel side of a VW
> engine and a Corvair engine with a VW adapter.
> The mounting surface and depth (offset?) of crank
> flange to the mounting surface look the same.
>
> So using two adapter plates shouldn't be a
> problem.

I know what Matt is saying. What I am saying is how are you going to support the input shaft if you pull it further from the crank flange via the additional thickness of the adapter plate? That is what I am saying. Even a 1/4" to 1/2" is enough to pull the input shaft out enough that it is no longer properly supported. Just do it the right way and make a new Corvair to Subaru plate instead of jury rigging it.

Lee J



Edited 2 time(s). Last edit at 02/22/2018 06:48AM by gnvair.

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Re: NEWS FLASH: Subaru transaxle
Posted by: Spectre ()
Date: February 22, 2018 09:45AM

I understand what Matt is saying.

The Corvair/VW engine plate makes the Corvair engine look like a VW engine from the transaxle perspective. The Subaru/VW adapter on the transaxle makes a Subaru transaxle look like a VW trans to the engine.

So, you end up with a "VW engine" bolting to a "VW transaxle". It should all work, provided the engine isn't too high due to ring/pinion placement previously mentioned.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Oklahoma City, OK

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Re: NEWS FLASH: Subaru transaxle
Posted by: martyscarr ()
Date: February 22, 2018 10:32AM

gnvair is right IMO, it's not going to work unless you address the issue of the transaxle input shaft not reaching the pilot bushing in the Corvair crank. You're going to have to make
a custom flywheel with an extension for the pilot bearing, similar to the middle piece in the picture below.



Edited 1 time(s). Last edit at 02/22/2018 10:41AM by martyscarr.

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 22, 2018 10:55AM

Marty and Lee.

Think of the Crown adapter I showed as being an "Emulator" not a plate

As David stated...





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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 22, 2018 10:59AM

MattNall Wrote:
-------------------------------------------------------
> Marty and Lee.
>
> Think of the Crown adapter I showed as being an
> "Emulator" not a plate
>
> As David stated...

Regardless of what you call it, you will have to make sure that the input shaft is properly supported like Marty showed. Not trying to make a big deal of it but I would make a new plate/adapter that is Corvair engine on one side and Subaru on the other. Then determine where the input shaft ends up. Then deal with fitting a clutch/flywheel combo with a starter ring gear

Lee J

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Re: NEWS FLASH: Subaru transaxle
Posted by: MattNall ()
Date: February 22, 2018 11:01AM

Hopefully someone tries soon!





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Re: NEWS FLASH: Subaru transaxle
Posted by: Vairismo ()
Date: February 22, 2018 11:03AM

We need a thickness dimension on the Subaru/VW adaptor to make any kind of informed judgement on that IMO. We may be imagining an issue where there isn't a big one.
What all is included with the Subaru-VW adaptor kit? It is for the Subie engine to the VW transmission yes? We are talking about going the other direction it seems.

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Re: NEWS FLASH: Subaru transaxle
Posted by: gnvair ()
Date: February 22, 2018 11:04AM

Vairismo Wrote:
-------------------------------------------------------
> We need a thickness dimension on the Subaru/VW
> adaptor to make any kind of informed judgement on
> that IMO. We may be imagining an issue where there
> isn't a big one.
> What all is included with the Subaru-VW adaptor
> kit? It is for the Subie engine to the VW
> transmission yes? We are talking about going the
> other direction it seems.

All of the "kits" I found doing a quick search showed Subaru engine to VW transmission.

Lee J

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