So to clarify:
There are 2 different fly wheels (use with manual transmissions) and 2 different flex plates (used with automatic transmissions). Divided thus:
"non-turbo" flywheel - used with all manual n.a. RX-7s This is smaller diameter than:
"turbo" flywheel - used with all turbo RX-7s and all RX-8's RX7 flex plate - used with all auto RX7's RX-8 flex plate - used with all auto RX-8s (and there is a cosmo flex plate as well)
-- the flex plates require the appropriate counter weight and that supplies the 6-bolt holes -- The fly wheels have the counter weight built in so there is no 6-bolt pattern and the large nut goes on the flywheel instead of the counter weight .. unless you are using an aftermarket flywheel, in which case most will bolt up to the counter weight. The aftermarket flywheels come in many different weights and materials.
Tracy used the RX-7 flex plate and his damper plate will not directly fit on the RX8 flex plate or either of the flywheels. The flywheels put the ring gear in different locations from each other, with the n/a RX7 being smaller than the Turbo RX7/RX8.
But I have not been able to figure where the RX7 auto flex plate puts the ring gear in relation to the flywheels or the RX8 flexplate (though it seems to have the same number of teeth as the turbo RX7/RX8 flywheel)
Tomorrow afternoon I will be able to get to the hangar and let you know the size of the -7 flex plate relative turbo flywheel. Since the flywheels are already really beefy, I was hoping there might be an easy adaptation of one that would put the ring gear and damper plate in the right spot... but that is seeming more and more unlikely.
On Wed, Jul 13, 2011 at 10:39 PM, Dave <david.staten@gmail.com> wrote:
On 7/14/2011 12:32 AM, Dave wrote:
On 7/14/2011 12:21 AM, Dave wrote:
I believe the manual flywheel has an integral counterweight that
precludes mounting the PSRU. The auto flex plate has 4 evenly
spaced holes that the PSRU mates with.
Here is a picture of the RD-1 damper nested into the auto
flex-plate with the bushing holes offset slightly from the dimple
and mounting hole.
Actually, my bad, this was the IMPROPER auto flex plate, as
evidenced by the radial mismatch between the bushing holes and the
dimples.... I've got hundreds of pictures from the teardown and
build... I probably should make a CD of them or something.
|