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Engine Specific Info and Questions => IDI Engine => Topic started by: dokarex on June 24, 2008, 01:19:04 pm

Title: what would you do
Post by: dokarex on June 24, 2008, 01:19:04 pm: I have a 87 Doka with a 1.9TD. Great low end (probably could pull stumps)but I still have the 1.6NA tranny.
I can get a Gas tranny out of an 87 Westy (fire) Would the change in gearing from the diesel tranny to gas one help the top end (currently 110KPH)
Pros
Cons
Etc
Title: what would you do
Post by: zukgod1 on June 24, 2008, 02:15:33 pm: I dont know about the gears but I took a complete trans out of a gasser for my car.
Title: what would you do
Post by: jtanguay on June 24, 2008, 04:18:13 pm: diesels are usually geared taller due to the lower end power. stock, there isn't much power up top. you can install a gasser tranny but i doubt you will like it. look for a turbo diesel tranny and enjoy some good fuel economy :) while taking advantage of the low end grunt of the 1.9
Title: what would you do
Post by: burn_your_money on June 24, 2008, 06:23:07 pm: I built my aunt a TD and it uses a gas tranny. Just get the ratios and run the numbers. Some are better then others.
Title: what would you do
Post by: Vincent Waldon on June 24, 2008, 06:29:20 pm: To wit, the ratios are here:

http://www.scirocco.org/gears/
Title: what would you do
Post by: vanagonturbo on June 24, 2008, 07:17:51 pm: Is it a syncro?

I can assure you that you will not be happy with a gas tranny. the ratios will put your rpms even higher. This is not really desirable with a diesel.
Title: what would you do
Post by: zukgod1 on June 24, 2008, 09:20:44 pm: Mine went from 4000rpm @ 72 mph to
3000rpm @ 72mph

Removed a AWY Diesel trans for a ACN coded gasser trans.

1st gear is just a tad tall but once I'm moving it rocks.
Title: what would you do
Post by: vanagonturbo on June 24, 2008, 09:30:38 pm: We are talking Vanagons here ;) Trannies are totally different.

I might also add that the ACN was used on diesel MKIIs as well ;)
Title: what would you do
Post by: Quantum TD on June 24, 2008, 11:08:31 pm: Quote from: "vanagonturbo"
We are talking Vanagons here ;) Trannies are totally different.

Indeed. But there are similarities in terms of gearing, and what you hope to get out of the vehicle. Here's a link to another forum from someone with a similar question, and my response:

http://www.vwdieselparts.com/forum/viewtopic.php?t=8389

While I do not have a ton of experience swapping Vanagon/Transporter/Doka transmissions, I am familiar with the diesel gearing, and the 1.9TD swap (did it in my dad's Vanagon). I can't/won't tell you what to put in your car, but I will say that you might have to make a frankenstein trans to get what you want out of the car. Check the gear codes and play with the numbers, then decide what it best for you.

Quote
I might also add that the ACN was used on diesel MKIIs as well ;)

Not exactly. The ACH was the trans used in the diesel MKII. The ACN never came factory in any diesel
Title: what would you do
Post by: myke_w on June 24, 2008, 11:20:12 pm: aircooled vanagon is the tallest gearing out there, gotta use your bell housing of course,
Title: what would you do
Post by: monsho on June 25, 2008, 01:10:55 am: here you go:

http://www.brick-yard.co.uk/VehicleSpecific/T3/info/gbx.htm

this gives you all the ratio's for the different gearbox's. On the vanagon, the NA diesel boxes are very very low geared. Over here people generally try to find an AAP or AAR coded petrol box, off the 2.1. These are the highest ratio boxes as standard and suits the AAZ pretty well. Once tuned up, or especially a TDi conversion, you need to start looking at custom ratio's or final drives...

this is all for a 2WD though there are codes and ratio's for the syncro boxes there as well...
Title: what would you do
Post by: monsho on June 25, 2008, 01:16:43 am: oh yeah, and you need to take the bell housing off your diesel box as well as the input shaft (shorter on the diesel) for the swap over.

Aircooled box is pretty good, not quite as high geared as the AAP / AAR but its a very strong box, probably the strongest...
Title: what would you do
Post by: myke_w on June 25, 2008, 05:27:37 am: I was thinking on our side of the drink :)
Title: what would you do
Post by: monsho on June 25, 2008, 03:36:41 pm: did you guys get manual 2.1 wasserboxers, or were they mainly autos?
Title: what would you do
Post by: myke_w on June 25, 2008, 04:32:40 pm: both, but only 4 speed in manual
Title: what would you do
Post by: vanagonturbo on June 26, 2008, 10:54:00 am: My bad. These cars are getting so old and so many people have swapped transmissions that it can be hard to recollect what they came with every time ;)
Title: what would you do
Post by: dokarex on June 26, 2008, 03:46:20 pm: Thanks for all the input.
Just to clear somethings up
It's an 87 that I imported from Germany
It came stock with the 1.6na diesel engine and tranny
The engine in it is a 1.9TD with 75,000KM

Now the big question where do I find the tranny code to compare numbers. I was looking at the tables you sent me to and if it's the last Diesel tranny it has a 5.50 final would going to a 4.83 really make that much difference.
So far the 1.9TD has not been modified and would any of the mods on this site(Fuel screws)overcome any drawbacks to this switch.
Thanks
D
Title: what would you do
Post by: VW_Commuter on June 26, 2008, 03:51:44 pm: It should be in the same place as others, on the bottom of the bell housing of the transaxle.

Greg
Title: what would you do
Post by: Possum79 on June 26, 2008, 04:56:06 pm: http://www.brokevw.com/020oil.html

second picture has a spot highlighted to show where the code is. Also has other point like fill spot so you can figure out which way is which.
Title: what would you do
Post by: vanagonturbo on June 26, 2008, 07:49:19 pm: That pic is for an 020 trans. Definitely not Vanagon/t3.

IIRC the code is on the drivers side directly below the reverse light switch housing.
Title: what would you do
Post by: VW_Commuter on June 26, 2008, 09:03:55 pm: My bad, thought he was talking about his jetta.
Title: what would you do
Post by: Possum79 on June 26, 2008, 11:10:51 pm: definitely need to re pay attention. I read that before but totally forgot. My mistake.
Title: what would you do
Post by: monsho on June 27, 2008, 01:11:13 am: Quote from: "vanagonturbo"
That pic is for an 020 trans. Definitely not Vanagon/t3.

IIRC the code is on the drivers side directly below the reverse light switch housing.

Yep, what he said...

If it is the 5.50 final drive then pretty much any other box is going to make a big difference!
Title: what would you do
Post by: dokarex on June 27, 2008, 01:01:26 pm: Actually looking at the chart again I think it's the 84.8 and up 1.6na 5.83 tranny; code ABF. I haven't been able to read the tranny code (needs cleaning) but it was a stock 87 1.6na and matching tranny.
What would then different final drive and gearing from a gas 87 vanagon do the top end currently 110KPM
1st gear 20KPH
2nd gear 40KPH
3rd gear 65KPH