RE: ABA swap questions

["Scott F. Williams" <sfwilliams@home.com>]

> 1) Can I use my 16V head?  Apparently this lowers the CR to 8:1, so does
> that limit me to turbo applications?  Turbo is a possibility, and
> moreso if
> I hear more from the list members who are doing this (Scott?)

Nah, having destroyed my Mazda's *factory* (and quite stout) turbo motor
under high-boost and revs, I decided to drop the idea of a forced induction
2.01 16v. I'd do it if I was to build the whole thing with forged pistons,
proper fasteners, etc., but that is a lot of work and money.

So, I then looked at the 1.8T idea. This is also a huge amount of work and
what do you get for it? -about 225hp if you buy the (expensive) Audi TT
motor? Sure, more power is available, but then you have to spend even more.

So... for about half the price of a stock 1.8T project, I could add these
throttlebodies and get around 210 all motor horsepower, throttle/rev
response like a sportbike, exotic looks and sound, NO TURBO LAG, yada yada.
Additionally, I wouldn't have to reconfigure or discard the mighty
transmission that I just built (4.25 r&p, custom 6-speeds, Quaife). If I
want more power then I can add safely add fully 3D-mappable nitrous
injection for another 80hp.

> Still, would
> I need headwork or pistons to make it work?

To do an ABA turbo/16v project right, you'll want to swap in some
higher-compression forged pistons. A 8.5:1 CR is about perfect; I think.

> 5) Final HP figures?  The specs say 115hp at 5400 RPM stock, but
> have any of you guys who have done this swap put your car on a dyno?
>   At any rate the
> torque curves look very nice, and considering that my main
> application would
> be street, I'm lovin' the idea of lots of low-end grunt :-)

I say drop a 2.0l 16v motor in there and splurge on a 4.25 R&P. Then install
a .71 or .75 5th gear and call it a day. You'll have amazing bottom end
grunt and awesome rev potential that the ABA can't deliver. For the money
that you might spend on a turbo, you could also buy a Quaife and a
six-speed. Turbo shmurbo... :^)
--
Scott F. Williams
NJ Scirocco nut
Golf GTI 16v rallycar
Mazda 323 GTX turbo assault vehicle

Check out our rally team's website!
http://www.usrallyteam.com


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