Paul,

Do you or anyone know the weight of the automatic flexplate with the
starter ring attached?

Thanks

Doug - shaking  in Japan.

I have one up at the hangar but not planning on going there
in the next couple of days. Figure the volume of a 12 inch disk of
3/16 thick
steel at a density of .3 pounds per cubic inch. Then take half of
that for the large holes and you will have a good guess.

Paul Lamar

On my old spring style postal scale my AT flex plate weighs 1.83 kg
[4 #].
Interestingly the balance that it bolts to is also 1.83 kg. The bolt
ring weighs .12 kg [.264 #]. and the six bolts that hold these three
pieces
together are .12 kg too.

John

6 x 6 x 3.1416 x .187 = 21 cubic inches at .3 pound per cubic inch is
6.34 pounds
half of that is 3.17 pounds not that far off :)
--
Paul Lamar ...No rotor no motor.

Doug,
1792 grams, 63.21oz, 3.95lb.
George ( down under)

The flexplate weights vary by generation (and year?).  Here are a few I
have measured:
S4 - 1913g + 120g plate + 122g for 6 bolts
S5 - 1891g + 242g plate and 6 bolts
S5 - 1840g + 256g plate and 6 bolts
S6 - 2251g + (bolts included?)

Here are the numbers for an 87NA automatic rotating assembly:
Front CW + washer - 1274g
Front Rotor "D" - 4609g
Rear Rotor "C" - 4633g
Rear CW - 1861g
flexplate - 1913g + 120g plate + 122g for 6 bolts
eshaft - 6788g

Cheers
Cary

Paul and guys,

Thanks for the quick response.  This info has saved me an afternoon of
work.  Some good news.  I am now back in the saddle with free access to
a complete machine shop again.  Michiwa is now teaching at an industrial
art technical high school and their shop is well equipped but not used
between 15:00 to 19:00. Monday through Friday. I`ve ordered Aluminum
pipe and Teflon sheet, and Aluminum flat bar from Metals Online so I can
make up the P port housings and slide throttles.  I hope to make and
accurate step on the inner housing wall but the shop doesn`t have a
fly-cutter.    Guess I`ll have to make one or borrow one.

Doug.


Doug in Japan

Hi Doug;

Much easier and more accurate with a boring head arbour (queen's
english).  I think I paid $40-50 years ago.

Cheers
Cary

Cary

Good suggestion.  I looked at some sites selling tools and they are still
quite reasonable.
It appears you insert the rounded shank cutting tool from the side to the
desired radius and use the allen screws to secure it in place.

Thanks

Doug

It's more than that Doug. You need to be able to make fine adjustments on
the bore size.

Also see http://www.youtube.com/watch?v=LkKw72dZ2yc