Bostig installation.

21

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5.42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.






22
No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5.42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.






23
Did the US not have the high compression engine ? Was it VJ ? Can’t remember the code.
Hart
On 10 Oct 2017, at 7:37 pm, gregespo73@yahoo.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com 
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5.42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.









24
They had the MV like us not the DJ. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 8:35 pm, Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Did the US not have the high compression engine ? Was it VJ ? Can’t remember the code.

Hart
On 10 Oct 2017, at 7:37 pm, gregespo73@yahoo.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com 
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5..42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.









25
Some info on gearbox/diff ratios:








On 10/10/2017 20:25, gregespo73@yahoo.com [Syncro_T3_Australia] wrote:

They had the MV like us not the DJ. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 8:35 pm, Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

Did the US not have the high compression engine ? Was it VJ ? Can’t remember the code.

Hart
On 10 Oct 2017, at 7:37 pm, gregespo73@yahoo.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:


Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter.

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5..42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.










26
Reasonibly sure i have the 4.86 gears in mine,
It's not as big a step as you might think.

110km/h is still 4000rpm, what are you fellows getting on the highway?

Nils 


On Tue, 10 Oct 2017 at 8:55 PM, gregespo73@yahoo.com [Syncro_T3_Australia]
<Syncro_T3_Australia@yahoogroups.com> wrote:
 

They had the MV like us not the DJ. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 8:35 pm, Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Did the US not have the high compression engine ? Was it VJ ? Can’t remember the code.

Hart
On 10 Oct 2017, at 7:37 pm, gregespo73@yahoo.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com 
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5..42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.









27

Hello together,

have a look here gearbox table (german):
http://www.t3-infos.de/images/Syncrogetriebe-Liste.gif

Ralf

Von AOL Mobil gesendet

On Dienstag, 10 Oktober, 2017 Hartmut Kiehn hartis <Syncro_T3_Australia@yahoogroups.com> wrote:
 

Did the US not have the high compression engine ? Was it VJ ? Can’t remember the code.

Hart
On 10 Oct 2017, at 7:37 pm, gregespo73@yahoo.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

No, they just want highway legs. Greg

Sent from Greg's iPhone

On 10 Oct 2017, at 5:01 pm, cathrich1@yahoo.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Just looking at that, that is a big difference for the US on the final drive. Did they have different engines or transmission ratio's to compensate?

Richard



---In Syncro_T3_Australia@yahoogroups.com, <jackthebearau@...> wrote :

Hi Peter,

I think I have a spare front 4.86 crown wheel and pinion if you want  to go that way but I would have to get it out and check, let me know if you are interested,

Neil.


From: "bruce.morphett@... [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups..com 
Sent: Tuesday, 10 October 2017, 10:16
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
Hi Peter and all,
It's really not complicated.
Select a ratio so that both transaxle and front diff match.
1. Change transaxle diff to match the front diff ie. 5.43 or
2. Change the front diff to match the transaxle diff ie. 4.86
I'd be choosing the latter. 

All Australian Syncros have the 6P or 6PA transaxle with 38:7 R&P, 5.42857
Most North American Syncros have the AAK or AAN transaxle with 34:7 R&P, 4.587

Bruce.
Adelaide
Selling my '89 Trakka Syncro 'Gold Pack'. $40k ONO.









28
US had smaller wheels, hence the taller diff.
29
What size wheels did they have?

On Wed, 11 Oct 2017 at 9:50 pm, plander@optusnet.com.au [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

US had smaller wheels, hence the taller diff.

30
205/70x14
31
All things being equal the diff and tyre size used on U.S. models makes them 5kmh faster at 100kmh i.e. a higher overall ratio.  Cutting final drive teeth is not as easy a proposition as it seems. The number of teeth on the pinion and the crown will greatly effect its longevity and wether it is a hunting or non hunting. My guess is when VWNA requested a higher final drive ratio they needed to change both tyre and final drive to achieve the small increase they wanted. I have seen many manufacturers over the years have special final drive ratios and spring specs for north America. The springs are always softer and the final drives always higher. Greg


From: "plander@optusnet.com.au [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Thursday, 12 October 2017, 18:20
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.

 
205/70x14


32
Hi Neil,

Very keen to chase up the 4.86 Ring & pinion for the front diff.

Cheers

Peter Kolevas
0448 690696
33
Morning all;
I have received my gearbox back from Rudi, does any one need a box mounted on a half pallet to house a gearbox for shipment FREE i am in Sydney
Regards
Bob Dale
 
Sent: Friday, November 17, 2017 6:14 PM
Subject: Re: [Syncro_T3_Australia] Re: Bostig installation.
 
 

Hi Neil,

 
Very keen to chase up the 4.86 Ring & pinion for the front diff.
 
Cheers
 
Peter Kolevas
0448 690696
34
Hi Robert.
Can you please txt me re box etc.
Gerald Cornish
0438 303 270