Author Topic: 020 ASF .75 and 3.67, need any taller then that for highway diesel?  (Read 10846 times)

April 08, 2012, 07:48:32 pm

billybobf

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like the title says, is the ASF a good tranny for a diesel freeway cruiser?  I was wondering if the 3.65 or the .71 would make much of an efficiency difference? mostly what I am looking for is if I want to drive 700-3k miles 90% freeway at 75mph what kind of different maybe a 6g would make?



Reply #1April 08, 2012, 09:56:31 pm

8v-of-fury

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #1 on: April 08, 2012, 09:56:31 pm »
The ASF (3.67/.75) will net you 3000rpms at 75mph. Kinda high if you expect any economy out of it. Mid 40's should still be achievable.

What car is this for? I would highly recommend that you update your profile to show your location and car driven so that this question need not be asked.. and answers can be given much easier. :D please and thank-you.

Reply #2April 08, 2012, 10:25:36 pm

billybobf

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #2 on: April 08, 2012, 10:25:36 pm »
I can do that, lowest you can get is the .71 and the 3.65 right?  so .2   and .04  less reduction?

also, currently 89 golf 4door GL with the 1.8 and electric fuel injection DIGIFANT?  its a fuel rail and electric injectors.

in progress if I can find parts easy enough, a 1.6 N/A mech head, currently I need a few 3 groove valves, a crank snout bolt, a cam snout bolt, an intermediate shaft with bolt, a front intermediate shaft bearing, the heater outlet on the back of the head, would like a good rear main seal housing (at which point it will get STUDS installed) and a single cam cap bolt (someone replaced mine) and are the 12 point 12mm headbolts stretch bolts? Im missing ONE of them ( I think my last rig was 6pt 12mm?) that is all I can think of for now. thinking about either gasser headers and pretty open exhaust and an open flowing intake (possibly custom with four small engine air filters) Or custom with a snorkel for deep water cruising. currently I have a non motor mount IP bracket, and NO timing covers (would like a full set of those too)

Reply #3April 08, 2012, 10:42:07 pm

8v-of-fury

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #3 on: April 08, 2012, 10:42:07 pm »
Going to the .71 5th gear will only drop another ~115rpms, totally not worth the effort..

Yes that is the Digifant FI system.

Reply #4April 09, 2012, 12:07:12 pm

R.O.R-2.0

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #4 on: April 09, 2012, 12:07:12 pm »
like the title says, is the ASF a good tranny for a diesel freeway cruiser?  I was wondering if the 3.65 or the .71 would make much of an efficiency difference? mostly what I am looking for is if I want to drive 700-3k miles 90% freeway at 75mph what kind of different maybe a 6g would make?

Jeremy just doesnt like HIGH gears..

but everyone else runs them without issues. they are a BIT HIGH for a n/a, but it works. they give you a shifter for a reason.. to shift.

and with this trans, you will be shifting. i drive everywhere in 5th gear, but the bigger hills, like more than a mile long, i shift into 4th and head up the hills, 4000 revs @ ~60mph... barely any throttle required to keep the car going at that point. sometimes i have to use 3rd gear, and reduced speed if i got a BIG load on the trailer..

my gasser has 85hp.. thats NOT MUCH MORE than a stock TD, or modified n/a...

but one thing the diesel will ALWAYS have more of, is TORQUE..

and yes, the electronic injection is DIGIFANT 2.. more affectionately named digifart, digifizz, yadda yadda.. its truely a HORRBILE injection system.. nothing like the super reliable CIS system that will run with the ECU un plugged..

thats always blown me away.. an injection system that will run with none of its electronics hooked up. its not gonna run good, but its gonna get you home.. not quite a diesel, but the next best thing!
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #5April 09, 2012, 08:42:08 pm

billybobf

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #5 on: April 09, 2012, 08:42:08 pm »
yeah right now that stupid idle valve ($200 plus) is pissing me off on the car, If I diesel swap the plan will be for an I-5 cruiser/I-10 cruiser. with MINIMAL weight load. I wouldnt mind having the 6g code. at this point after talking to you guys, I might go eco boost with a shim in the gov.

Reply #6April 09, 2012, 09:09:37 pm

8v-of-fury

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #6 on: April 09, 2012, 09:09:37 pm »
Jeremy just doesnt like HIGH gears..

Love high gears, just not close ratio on a diesel.

my gasser has 85hp.. thats NOT MUCH MORE than a stock TD, or modified n/a...

but one thing the diesel will ALWAYS have more of, is TORQUE..

Unless it is a TDI then no, it won't lol. Your 1.8 85hp also has 98ft.lbs of torque, which is more than the 1.6TD

Reply #7April 10, 2012, 11:39:48 am

R.O.R-2.0

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #7 on: April 10, 2012, 11:39:48 am »
Jeremy just doesnt like HIGH gears..

Love high gears, just not close ratio on a diesel.

my gasser has 85hp.. thats NOT MUCH MORE than a stock TD, or modified n/a...

but one thing the diesel will ALWAYS have more of, is TORQUE..

Unless it is a TDI then no, it won't lol. Your 1.8 85hp also has 98ft.lbs of torque, which is more than the 1.6TD

who said ANYTHING about CLOSE RATIO?!

the tall geared trannies are WIDE RATIO TRANNIES..

the low geared trannies are close ratio. GTIs, 16vs and such all got the close ratio boxes. diesels and low power gas got the wide ratio box.

wide ratio means there is a larger RPM difference between gears. (rpms drop ALOT between shifts) [usually equipped with a LOW 5th gear]

close ratio means there is a smaller RPM difference between gears.. (rpms hardly drop between shifts) [usually equipped with a HIGH 5th gear]

THERE IS NO SUCH THING AS A CLOSE RATIO TALL GEARED TRANS..

so, again Jer, who said anything about a close ratio?
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #8April 10, 2012, 12:23:06 pm

8v-of-fury

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #8 on: April 10, 2012, 12:23:06 pm »
The ACN is not as close as the actual close ratio boxes .. but it is dam near the same gearing.

I just prefer taller gearing than what the ACN offers.

Reply #9April 10, 2012, 01:00:30 pm

R.O.R-2.0

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #9 on: April 10, 2012, 01:00:30 pm »
The ACN is not as close as the actual close ratio boxes .. but it is dam near the same gearing.

I just prefer taller gearing than what the ACN offers.

dude, ACN is the HIGHEST trans VW ever offered in the 020...

how you going to get higher gears than that WITHOUT an 02A swap?
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #10April 10, 2012, 07:49:58 pm

theman53

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #10 on: April 10, 2012, 07:49:58 pm »
The AGS from what I gather has the longest separation between gears, but it has stock a 3.94 ring and pinion. I swapped mine to 3.67 and with the power I had I still could shift 1,3,5 if I wanted. I agree that the ACN had the highest gear from the factory and would really love to try one.

close ratio is what my one year only 2H is. It sucks, and I am pulling it for whatever reason, maybe an autocross guy will want it, but it is tied with the closest gears of all VW trans. The ONLY way it could get worse is if they put the 4.25 ring gear in it instead of the 3.94 it came with.
« Last Edit: April 10, 2012, 08:44:12 pm by theman53 »

Reply #11April 10, 2012, 10:26:27 pm

billybobf

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #11 on: April 10, 2012, 10:26:27 pm »
dang, just blow it all up in here.... so Im guessing that my asf with the 3.67 and .75 will be just fine and dandy.... otherwise sounds like my best bet would be to find the oddball 6g

Reply #12April 10, 2012, 10:28:04 pm

8v-of-fury

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #12 on: April 10, 2012, 10:28:04 pm »
dang, just blow it all up in here.... so Im guessing that my asf with the 3.67 and .75 will be just fine and dandy.... otherwise sounds like my best bet would be to find the oddball 6g

You had a good topic, one that spouted lots of discussion. Nobody got riled up, no name calling, no racial slurs. Just good clean discussion. Amen fella's.

Reply #13April 11, 2012, 12:09:14 pm

R.O.R-2.0

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #13 on: April 11, 2012, 12:09:14 pm »
The AGS from what I gather has the longest separation between gears, but it has stock a 3.94 ring and pinion. I swapped mine to 3.67 and with the power I had I still could shift 1,3,5 if I wanted. I agree that the ACN had the highest gear from the factory and would really love to try one.

close ratio is what my one year only 2H is. It sucks, and I am pulling it for whatever reason, maybe an autocross guy will want it, but it is tied with the closest gears of all VW trans. The ONLY way it could get worse is if they put the 4.25 ring gear in it instead of the 3.94 it came with.

Lucas

you would LOVE an ACN trans.. they are dee shizznit.. the only difference from what you have now, and an ACN is that 1-4 on an ACN are slightly farther apart.

i think a stock ACN would be better than a stock AGS..

after i figured out what an ACN was, and how cool they were, i was IN LOVE..
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #14April 11, 2012, 08:35:49 pm

theman53

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Re: 020 ASF .75 and 3.67, need any taller then that for highway diesel?
« Reply #14 on: April 11, 2012, 08:35:49 pm »
AGS (86-90 1.6 Diesel)     3.94 3.45 1.94 1.29 0.91 0.75

ASF, AON, ACN, ACL (8v)  3.67 3.45 1.94 1.37 1.03 0.75

From what I see my AGS has the 3.67, so R&P, 1st, and 2nd are the same. 3rd is mildly farther away from 2nd (.08) and 4th is mildly farther away (.38) from 3rd than the ACN. The AGS is mildly closer to the fifth at .16, than the ACN at .28. I do have two .71 gears that if I really wanted to could make that difference .20, but IMHO the .04 isn't worth it right now.

...I still want an ACN though. I do believe you with the ACN.


 

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