Tranny Selection

[jdbubb at ix.netcom.com (Dan Bubb)]

Comments within:

Sent: Tuesday, December 07, 2004 11:17 AM
Subject: [SPAM] Tranny Selection
>
>
>    Since I haven't got the cash to spend on getting a six speed, i'm gonna
> get a 5.  I'd prefer the cruising gear, although the fuel economy is an
> issue, it's more of a noise issue.  3000 rpm is quieter than 4, and on a
> 6500 mile trip, that's what will probably get to me the most.
>
>
> Things to take into account;
>
> - Gear Ratios.
>
>    Right now I'm thinking about a 2h, which is just like the 2y, but I think
> it is the 8 valve version, it was found in the 83 gti's(I was supposed to
> buy an 83 gti, but he sold it the day before I left town to buy it).  I'd
> like to take the .71 out of my FF and use it in whatever transaxle I get.

Big, big jump from 1.13 4th in the 2H or 2Y to the .71 5th. If you were cruising in 5th at 3000 and
downshifted to 4th you'd be at 4800 RPM. Maybe you wouldn't mind, but that would irritate the hell
out of me. I'd try a .8 5th (have to buy it new) or at least a .75.
>
> - Final Drive.
>
>   I'm not too sure, I've messed around with the gear chart and the speed/rpm
> calculator, and I think i'd like a 4.25 final drive.  It'll hurt the rpms a
> little bit on the highway's, but I think it'd be worth it.

My 2.0 8V ABA can spin the tires in first without provocation in my MK II with A/C and PS and 3.94
FD. i.e my car's heavier than yours and has a small traction issue. I think the 4.25 will just make
1st a waste of time unless you enjoy fighting for traction.
>
> - HP/Torque range (not absolute numbers, but the _range_.)
>
> I'm hoping for somewhere around 110-115HP and 130ish lb-ft.  Pat (ATS) was
> able to get 101whp and 120 wtq with his 3a setup.  I'm going to be bored out
> and stroked to 2.1L.  Hopefully a head that is going to be worked pretty
> nicely. I'd like to add the VWMS fuel distributor.  I have a TT downpipe and
> 2 inch catback which will be used with the setup.  I'm either gonna retain
> my g-grind cam or go with a 272 or 276, not too sure what yet, but with all
> that, i'd like to see at least those numbers above, if i'm underestimating,
> I can only be happier, and I don't think those numbers are too hard to get,
> but time, or the list, will tell.

I think your numbers are possible. I don't think you can do it with a stock head, which is why I
think Patrick's numbers were kinda low for  a 2.0. Ported head and 272 cam with decent exhaust (2.0
may be a little bit of a cork) should do it. The extra displacement won't get you much more HP
cause, in my opinion, the head is flow limited. It'll supply plenty of torque though, which is
another reason to blow off the 4.25 FD.
>
>
> - Money.
>
>    Money isn't a huge issue, I still live at home, I have an overall budget
> of probably $6000 for this car, I don't have $6000 grand right now, but in
> the next few months at Suncor I should make about $7500, so $1500 for the
> jetta, $6000 for the rocco, and I'll wear the same clothes 3 days a week.
> The $6000 has to pay for the engine, pay for a paint job, pay for the body
> work I can't do myself, and i'd like to buy some sway bars and tie bars.

Hmmm.....better start a spreadsheet for all the items you want to buy, then add at least 10% for all
the little stuff you can't think of now.
>
> - Intended Use(s).
>
>   Car will be a summertime daily driver as well as autocross car.  Of course
> the trip from the West Coast to the East Coast and back to the West is a
> priority of mine as well.
>
> Is a 2Y with a .71 5th what work with what I want?

Maybe if you can stand the big jump to 5th.
You know you're going to have a pile of torque with that engine and a really wide torque band. I'd
round up an ACN. It has a .75 5th with mid spaced (i.e.not close and not wide) 3rd and 4th ratios.
Maybe put a 3.94 FD in it. Decent cruising RPM and you'll never be off the power curve with the
engine you intend to build.
my .02
Dan
>
> thanks
>
> Bryan
> Fort McMurray, AB
> 81 Volkswagen Scirocco
>