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Yes, this one's definitely for a manual
transmission (hence the worn surface). There was a discussion many
months ago about modifying the drive to use a manual transmission
flywheel because of cracking issues with the flexplates.
Charlie
On 5/20/2014 5:09 PM, Rogers, Bob J. wrote:
Charlie,
I
think there is a difference (in diameter) between the
automatic transmission flex plate that you currently have
and a manual transmission flywheel. I suspect that the
flywheel you bought is for a manual transmission engine.
Bob
J. Rogers
Mustang
II, 13B Turbo
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
Sent: Tuesday, May 20, 2014 4:10 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: flexplate / flywheel saga
continued
Hi Charlie,
My flywheel was exactly the same
diameter, thought the teeth were closer to the engine a
little. I think there may be a difference between the
turbo and non- turbo. We hashed all that out a couple
years ago.. its in the archives. You can also check the
Mazdatrix website to see the different models.
On Tue, May 20, 2014 at 12:25 PM,
Charlie England <flyrotary@lancaironline.net>
wrote:
Well, I recently bought a used
aluminum flywheel with the following description:
Quote:
RX7
8.5Lb Fidanza Aluminum Flywheel for FB or FC
For
sale is a 8.5lb Aluminum Fidanza Flywheel for a RX7
Non Turbo , its used and could use a new friction
plate
fits
86-91 Non turbo RX7s might fit Fb 2nd gen RX7s as
well i'm not 100% sure
Unquote.
It was reasonably priced, since I don't need the wear
surface, so I figured it would be 'plan B' if I ever
have an issue with the flex plate.
When it arrived (yesterday, after everyone was gone), I
sat it on top of my (cracked) flex plate, and it's
almost an inch smaller in diameter. The mounting holes
in the center seem to line up properly. I remember
reading about milling the drive plate to move the
starter .2" closer to the engine, but I don't remember
anything about the smaller diameter.
So, my questions:
Did I purchase the wrong item, would I simply make my
starter cutout in the plate closer to the centerline to
account for the smaller diameter, or was the flywheel
mis-represented?
If it's not the described item, I need to send it back,
but I don't want to bother the seller if I simply bought
the wrong flywheel.
Thanks,
Charlie
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