I guess we can safely say that I am curious as well.  My dad says the
engine was just ‘tired’.

 Osman Ullah
|=——————————————=|
 Georgia Institute of Technology, Atlanta, GA
 http://www.prism.gatech.edu/~gte213f

>Where do you get off saying run in 4th on the highway. Why tax the engine at
>those high RPMS. Get real;, unless you have made perf mods run it hard but
be
>reasonable.  My 93 has been bored out plus bigger cams and other mods. I run
>mine in 5th when on the highway and still have plenty of pep for passing and
I
>can always down shift for more power. I race top fuel and other classes in
the
>NHRA plus my Miata in SSFC class at div 7 races. My Miata will run mid 13s
>without Juice or forced injection. Plus it still gets 35 mpg on the highway.
>Mandie Gordon (Mandie…@aol.com)

Dyke,
        Don’t get your panties in a bunch! I’m sometimes in 5th too just
cruzin…But sometimes also…just for fun I’ll feel inclined to drop it down
into third and keep it going till redlines in 4th gear…thats about 110 in
my 94 m-edition with Jackson Racing Headers and everything back of that from
Jackson…I’ve also done the cold air box thing and adjusted my timing to 14
degrees…Quite honestly I enjoy the speeds.  
        I just fly airplanes..no sensation of speed in them muthers…thats
why I got the Miata…my ass is close to the ground at those speeds…Bob

unless you have your timing bumped up to 18 degrees advance, you are
wasting your money on the expensive gas, which also has cleaning agents,
which clean as well as you Techroline.  Recent mail on the Miata list
suggested that the regular use of Techroline, and other cleaners similar
to it, especially as often as you are using it, may cause problems for
the injectors…

If you still want to spend money on that expensive gas, take your timing
to 18 degrees.  If not, just take it to 14 degrees BTDC, uses 87 octane,
and enjoy the savings, and additional power you will find.

andyc wrote:
> highest octane I can buy (95) and I keep the injectors clean with
> Techroline added every 1000 miles or so.

–
Pete and Bruiser
Silver 92A  with classic PhRedd stripes!
cum grano salis

> Where have you guys been??? Run that puppy to over 6500 rpm before you
> shift…the Miata engines have most of their performance in the higher rpm
> ranges…drive the freeways in 4th gear and 80 mph!…don’t use 5th till you
> have to exceed warp speeds in excess of 100mph!
> Bob, 94 M-Edition

While getting on the freeway today I hit 85 when I shifted to 4th.

She’s made to be wound up all the way.

BUT, I have a late ’94 w/1.81 ltr.  My 1.8 is far from gutless.  Better
low end torque then the VW type 4, 2 ltr in the last 914.  Better full
range than the 2000 cc Fiat in the last Spider.  My 1.81 is a champ.  I
have nothing on it but what came from the factory.  New plug cables,
highest octane I can buy (95) and I keep the injectors clean with
Techroline added every 1000 miles or so.  

If you’ve noticed a change in your ’90s performance then obviously
something is wrong.  If not…. well… I test drove more than my share
of 1.6 ltr engines and I chose to avoid it.  One can still get great
performance with the 1.6 if you are willing to modify both the car
and/or your driving methods. YMMV

–
Andyc_____________________
my email is: andr…@bsonicb.net
…without the "b"s

Jeff Hill