The 5-speed gearbox used in the RX-3 and RX-4
(maybe even RX-7) have a habit of getting stuck
in 3:rd gear and the box must be opened up to
get them to work again. I did that many years
ago for a few friends but I got tired after doing
it once or twice a week. It's the shifter fork
linkage inside the box that cause the problem.
Thomas
datsunmike wrote:
> Unlike regular engines that have cams that ramp up the closing of the
> valves, rotaries have ports and the rotor opens and closes on the ports
> without the ramp and hence the loudness of the motor. Kinda like a door
> being slammed shut.
>
> Rotaries as Tom mentioned have very high exhaust temperatures and custom
> headers and a very heavy exhaust would be required as well as a muffler that
> can withstand the temperatures.
>
> The crank center is also very high as compared to regular piston motors and
> the motor would have to be set lower in the frame to get the correct
> driveshaft angles.
>
> Great engine when port work is done but stock they're basically dogs except
> for the Turbos. Horrible gas mileage also.
>
> Mike
>
> ----- Original Message -----
> From: "Thomas - Sweden" <csp311@telia.com>
> To: "Jimmy Claypool" <srl311vg@hotmail.com>
> Cc: <marcs@misresourcegroup.com>; <datsun-roadsters@autox.team.net>
> Sent: Monday, May 20, 2002 2:01 PM
> Subject: Re: engine swaps
>
> > Rotary engines run hot. You would need a muffler
> > filled with lava rocks to withstand the heat if you
> > go racing. The non-turbo's are really loud. I think
> > an old IMSA racing RX-7 tested 125 dB in an
> > Road & Track magazine.
> >
> > Thomas
> >
> > Jimmy Claypool wrote:
> >
> > > The big issue with a rotary and especially a turbo rotary is the
> exhaust. It
> > > exits the passenger side and can reach in excess of 1500 degrees maybe
> more
> > > with a turbo. Otherwise I would be all for it. Compact design and easy
> ways
> > > to make big power. I have seen NA motors put out 250hp easy.
> > > If you find a way to keep from melting your passenger feet to the floor
> let
> > > me know. I am considering building an E mod autocrosser and would use a
> > > turbo rotary but theres no passenger seat in the plans so no worries
> there.
> > > there might be a way to make a sheild to go between the body and the
> > > exhaust??? Just a thought
> > >
> > > Jimmy
> > >
> > > >From: "Marc S" <marcs@misresourcegroup.com>
> > > >Reply-To: "Marc S" <marcs@misresourcegroup.com>
> > > >To: "ROADSTER" <datsun-roadsters@autox.team.net>
> > > >Subject: engine swaps
> > > >Date: Mon, 20 May 2002 10:46:55 -0500
> > > >
> > > >Would any of the turbo rotary engines work
> > > >
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