EGT probe for my EcoDiesel

[745 turbogreasel]

But since the governor mod I think my mpg has gotten better judging by where the fuel gauge is (currently 1/4 tank) relative to number of miles (currently 500). It would normally be closer to the red mark at 500 w/o the gov mod. What I find with the gov mod is that I don't have to down shift as often and still maintain the same steady speed, and I think that is contributing to better fuel economy.

I too find I can say in 5th up the mountain, and run lower temps than I was wound out in 4th before.
I almost have enough power to regear, and get my freeway RPMs back under 3300.

Also, I don't think I will ever take anyones word their oil is filtered, or doesn't need it.  If it doesn't need it, it will only take a few minutes to filter anyway.

[theman53]

Well I really don't think you guys can actually knock it without having done it. I have an AGS with a 3.67 and the .75 fifth. Before it was the 3.94. It was leaps and bounds better mileage wise. I did rebuild the engine, but it had a lot different characteristics just from the trans. I NEVER got close to being over 45mpg with it as the 3.94 even 100% highway. I consistantly averaged that once I got it all tuned in correctly. Even before I did have it tuned in on the highway it was good. When I went to almost canada to get my 1.9 engines it got 49.2mpg...hauling 800lbs of engine and bolt ons back in the car.

I think the secret is to get right under the peak torque with the rpm with whatever gear you are running and you will get the best mileage.

8v, I think that is just the nature of the TDI. I have the alh with the manual for it in it and can do similar. All the power is in the first 3,000 rpm and you can shift before that and still be on boost and pull to 3,000 easily. My TDI does pull above 3,000, but just not like it does off idle.

BTW, even with one of the widest trans AGS in my old jetta, I did the 1,3,5 or 2,4,5 or even sometimes down hills 2,5...my point in my post was if it is over 75% highway driving a higer gear will help you.

using scirrocco.org I found that at 70mph all other things being the same except for R&P ratios the 4.25 will turn 3298rpm and the 3.67 will turn 2848rpm = 450 rpm. That almost 500rpm *have a 2H trans and that 450rpm is the same as shifting a gear in it*  is huge considering that is in the range when the stock gov. really cuts fuel. Add the .71 and you get 2612rpm and down into the territory of modded gov vs stock gov really won't make much difference. Especially if you cut another 5-10 mph then it "should" be identical to an unmodded gov.

[R.O.R-2.0]

idk what you guys have about 3.67 gears.. i love them. its the only reason my cars get decent mileage around here.

plus, its nice having DRIVE be 4th gear.. and 5th be a nice HIGH overdrive..

when i had my VNT, i loved having 3.67 gears..

ACN is my hands-down favorite 020 trans..

i have one in my TD jetta, and my GTI tow-mobile..

5th gear is too high with 1k #'s or more on the trailer..

i went from an AUG trans, to my ACN.. and mileage definitely improved with the ACN..

i used to have enough power to make use of an ACN trans tho.. even my GTI tho, does amazingly well with the ACN still in there.

only way i would even consider 3.94 gears, is with a .71 5th, or something even higher..

[8v-of-fury]

I do not hate on the ACN because of the 3.67 gears, I hate on it because the gears are too close. A close ratio box is really only awesome behind a motor that can wind the rpms up. I'd really rather prefer a 3500rpm drop between gears for my style of driving.

Let me put it this way, I can be in 5th gear by 35mph.. shifting normally, those gears are far too close for me!

Like I said, if my FN weren't pre-84 and had the conical washers in the trans I'd run it every day over the ACN.

[92EcoDiesel Jetta]

Getting back on topic, I ordered the Auber Instr EGT probe with exposed tip junction for fastest response  

http://www.auberins.com/index.php?main_page=product_info&cPath=5_22&products_id=69&zenid=bf6396eb3377f9741e39db4b17dfc7d5


instead of the Aircraftspruce Micro 1000

http://www.aircraftspruce.com/catalog/inpages/micro1pyroprobes.php


mainly because of the note on Aircraftspruce's site:

"These are "K" type grounded probes, not for use on digital gauges. For use with Micro-1000 gauges."

My Auber Instr gauge is a digital type..

[R.O.R-2.0]

I do not hate on the ACN because of the 3.67 gears, I hate on it because the gears are too close. A close ratio box is really only awesome behind a motor that can wind the rpms up. I'd really rather prefer a 3500rpm drop between gears for my style of driving.

Let me put it this way, I can be in 5th gear by 35mph.. shifting normally, those gears are far too close for me!

Like I said, if my FN weren't pre-84 and had the conical washers in the trans I'd run it every day over the ACN.

dude, an ACN is the WIDEST GEAR SPREAD you could get in a stock 020.. you cant get a wider ratio VW trans unless you go with custom gears..

the FN still cruises at a higher RPM then the ACN does..

do you have the ACN box confused with one of the CLOSE RATIO boxes like the AGB/2Y/9A/AUG trannies?

have you ever driven a diesel w/ an AUG box? there fun, but they also turn ~3200 revs @ 60..

ever driven an ACN? they have a 100% different gear split. they turn 2400 revs @ 60..

why do you think that the ACN boxes are close ratio? they arent even close..

the ACN will turn LESS rpms cruising than your old FN would.. what do you have against the ACN, it has a WIDER GEAR SPLIT than your FN does.. i dont get it dude..

[8v-of-fury]

ever driven an ACN? they have a 100% different gear split. they turn 2400 revs @ 60..

Yes, I currently daily an ACN transmission, it feels really close

why do you think that the ACN boxes are close ratio? they arent even close..

I feel this because each shift only drops a few hundred rpms

the ACN will turn LESS rpms cruising than your old FN would.. what do you have against the ACN, it has a WIDER GEAR SPLIT than your FN does.. i dont get it dude..

Dunno man, the FN felt way wider than the ACN. Like this is real world experience, I have also driven an actual close ratio box on a diesel.. the AWY which is identical to the 4K and 2H. I have kept the AWY transmission for the day I build a fire breather of an mk2 gas engine I have also kept my 4K close ratio for the same thing but in an mk1 lol.

[92EcoDiesel Jetta]

ever driven an ACN? they have a 100% different gear split. they turn 2400 revs @ 60..

Yes, I currently daily an ACN transmission, it feels really close

why do you think that the ACN boxes are close ratio? they arent even close..

I feel this because each shift only drops a few hundred rpms

the ACN will turn LESS rpms cruising than your old FN would.. what do you have against the ACN, it has a WIDER GEAR SPLIT than your FN does.. i dont get it dude..

Dunno man, the FN felt way wider than the ACN. Like this is real world experience, I have also driven an actual close ratio box on a diesel.. the AWY which is identical to the 4K and 2H. I have kept the AWY transmission for the day I build a fire breather of an mk2 gas engine I have also kept my 4K close ratio for the same thing but in an mk1 lol.

OK, no more arguing on gear ratios!
Found this on brokevw's site: http://www.brokevw.com/020ratios.html

[R.O.R-2.0]

ever driven an ACN? they have a 100% different gear split. they turn 2400 revs @ 60..

Yes, I currently daily an ACN transmission, it feels really close

why do you think that the ACN boxes are close ratio? they arent even close..

I feel this because each shift only drops a few hundred rpms

the ACN will turn LESS rpms cruising than your old FN would.. what do you have against the ACN, it has a WIDER GEAR SPLIT than your FN does.. i dont get it dude..

Dunno man, the FN felt way wider than the ACN. Like this is real world experience, I have also driven an actual close ratio box on a diesel.. the AWY which is identical to the 4K and 2H. I have kept the AWY transmission for the day I build a fire breather of an mk2 gas engine I have also kept my 4K close ratio for the same thing but in an mk1 lol.

FN has a 2.9564:1 ratio when its in 5th gear.. (3.89x.76=2.9564)

ACN has a 2.7525:1 ratio when its in 5th gear.. (3.67x.75=2.7525)

the ACN is longer geared yo. and yea, when you shift at 1200 revs, the gears are SHORT. there gonna be short in any trans when your shifting that low..

and if you had a trans with a 3500rpm gear split, like you were talking about, that would mean you gotta rev to 4k in every gear, just to drop down to 500 rpm and be lugging the guts out of your engine..

that makes no sense to me...

im going to say it again.. out of all the stock ratio boxes, the ACN group of boxes (all boxes with the same ratios as the ACN) is the TALLEST GEARED BOXES YOU CAN GET FROM VW..

i just did the math, its up there ^^ numbers dont lie..

the only trans with WIDER gears is the AAZ trannies, and they are just BARELY longer.. just because of a SLIGHTLY taller 3rd and 4th gear.. so thats just going to make the jump from 4th to 5th less..

i think the gear split is really good on the ACN. its over 500 rpm drop with every shift, then about 750 drop into 5th..

the gear split on my AUG is like 2-300 rpm drop in every gear, even 5th..

[R.O.R-2.0]

Jeremy, if your ACN is too close feeling, then there is a GREAT possibility that someone has rebuilt it in the past, and its just an ACN case with a close ratio gear set..

if it turns 2400 revs @ 100km/h, then its got 3.67s with a .75 5th gear, and IS an acn..

and like i been saying, you dont get any better than that without .71 5th gear.. and swapping from a .75 to .71 is pointless, you said it yourself..

so, without building a 100% custom transmixer, you are stuck with the ACN as the TALLEST VW 020 around..

[billybobf]

on a site it lists a 6g trans code with a lower ring and pinion and the .71 fifth like a 3.65 R&P

site shows 2856 rpm at 70mph for the acn/asf like I am running and a 2689 rpm at 70 for the 6g code less then a 200rpm drop at 70mph

[theman53]

http://www.scirocco.org/gears/

that site too. I haven't found the 6g trans anywhere for 020??? What is it?

[billybobf]

http://forums.vwvortex.com/showthread.php?2422651-6G-tranny-please

russian 83 84 85 scirocco?

[bbob203]

so guys who has an ACN collecting dust? 

[R.O.R-2.0]

so guys who has an ACN collecting dust? 

they are COMMON trannies, basically every econo-box (base model, not GL, or GLI) golf or jetta from 85, 86, and 87 will have this trans..

i have 2 of them, thats how much i love these trannies!

whenever i come across an ACN, and i can afford it, i buy it.. dont even need it most of the time, but usually i know someone else who could use one..

there IS ONE in a car in St. Johns pick n pull that looked to be in decent shape.. $150 is what they charge for trannies i think.. maybe you have wrecking yards down closer to you tho also..