I think it's unobtanium. ;-)
Gordon Glasgow
Renton, WA
> -----Original Message-----
> From: owner-datsun-roadsters@autox.team.net
> [mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of datsunmike
> Sent: Friday, March 15, 2002 5:09 PM
> To: SLBESQ@aol.com; datsun-roadsters@autox.team.net
> Subject: Re: Twice as much
>
>
> Pushrod Nascar engines are hitting 9000 and doing it for 500 miles or so.
> Sure, not nearly as many RPMs as F1 engines but then again even CART engines
> don't hit those RPMs either. RPMs = $$$$
>
> For what one F1 engine costs I could buy a fleet of Roadsters and afford to
> build a garage to house them.
>
> BTW, doe anyone know what F1 blocks are made of? Someone told me they're made
> of some super strong steel like what rollbars are made of.
>
> Mike
>
> ----- Original Message -----
> From: SLBESQ@aol.com
> To: datsunmike@nyc.rr.com ; datsun-roadsters@autox.team.net
> Sent: Friday, March 15, 2002 1:05 PM
> Subject: Re: Twice as much
>
>
> you make very good points. however, i think the engine's ability to rev has
> most to do with the design of its valve train. moving the camshaft closer to
> the valves allows the engine higher revs, pushrods being the limiting factor.
> and as someone else aptly noted, at 7,000 rpms, you may want to watch out for
> flying pushrods. in general, overhead cam engines will be able to rev higher
> than a pushrod engine, all other things being equal. then to take that one
> step further (as F1 teams do), you can eliminate the cam shaft
> altogether.....using air for example to open and close the valves, or air to
> open and springs to close....etc
> s
> 67.5 MIZU
>
> In a message dated 3/15/02 3:36:16 AM Pacific Standard Time,
> datsunmike@nyc.rr.com writes:
>
>
>
> The 2000 is a stroked 1600 that is fully counterbalanced, however 1600s
> can
> be revved quite high even though the cranks aren't fully counterbalanced.
> The shorter stroke 1600 should be able to rev higher than a 2000. I have
> heard of 3 main engines hitting 8000.
>
> There's a lot more to revs than just the crank - valve springs play a very
> important part. And of course careful balancing and preparation and
> lightening of the reciprocating parts.
>
> Mike
>
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