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lightweight flywheels (1.8L)

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lightweight flywheels (1.8L) #1
mailbot Mail List Archive Bot ., Online, USA	Topic Creator (OP) Aug 13, 1998 08:30 PM Joined 15 years ago 227,243 Posts

This read-only message was archived from a public mail list.
Mail From: Toby Weir-Jones <(email redacted)>

[also posted to the primary miata list]

Does anybody know the total mass of the various reciprocating parts in
the 1.8L engine in stock configuration? In particular:

--Crankshaft
--Rods
--Pistons
--Camshafts
--Flywheel (18-19 lbs i believe)

I'd like to get some sense of what proportion of the total inertial mass
could be saved by moving to a lighter flywheel, and indeed, if that
proportion would make the change worthwhile.

TIA,
twj

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lightweight flywheels (1.8L) #2
mailbot Mail List Archive Bot ., Online, USA	Topic Creator (OP) Aug 13, 1998 08:40 PM Joined 15 years ago 227,243 Posts

This read-only message was archived from a public mail list.
Mail From: Ray Ayala <(email redacted)>

Toby Weir-Jones wrote:
>
> [also posted to the primary miata list]
>
> Does anybody know the total mass of the various reciprocating parts in
> the 1.8L engine in stock configuration? In particular:
>
> --Crankshaft
> --Rods
> --Pistons
> --Camshafts
> --Flywheel (18-19 lbs i believe)
>
> I'd like to get some sense of what proportion of the total inertial mass
> could be saved by moving to a lighter flywheel, and indeed, if that
> proportion would make the change worthwhile.

Don't forget the rotational inertia is the integral of the { mass times
the radius of rotation }, so relative masses alone don't reveal much.
- Ray

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