Re: Compression Ratio

["Hiro Nishio" <hiro@octagongarage.com>]

Hi Lew,

No public road available in Japan to have race of course.
On the public road, it is sports car, and on the circuit, it is racing car.
So I got MOT and I use pump petrol.
The problem on the public road is the water soon boiling while in the
heavy traffic except winter!

Cheers,
Hiro

----- Original Message ----- 
From: "Lew Palmer" <lpalmer@roundaboutmanor.com>
To: "'Hiro Nishio'" <hiro@octagongarage.com>; "'Ross & Georgia Kelly'" 
<rgkelly@bigpond.com>; <mg-mmm@autox.team.net>
Sent: Wednesday, April 20, 2005 4:08 AM
Subject: RE: Compression Ratio


Where can you road race that flying bomb on "public roads" in Japan? <grin>

Cheers,
Lew Palmer

-----Original Message-----
From: owner-mg-mmm@autox.team.net [mailto:owner-mg-mmm@autox.team.net] On
Behalf Of Hiro Nishio
Sent: Tuesday, April 19, 2005 9:11 AM
To: Ross & Georgia Kelly; mg-mmm@autox.team.net
Subject: Re: Compression Ratio

Hi Ross,

I rebuilt my J2 engine (847cc) at the compression ratio of 7.48. Theoretical
CR after 8psi supercharging is about 8.6, and could win a couple of
Vintage Car Races recently, using ordinary pump petrol. It has my own
special lightweight pistons and can rev up till 7000rpm. It produces about
60bhp I hope - rather optimistic, but it is actually enough for 1060lb dry
weight road/racing J2771 with ENV box on public road. If you want I
can send calculation chart of S/Ced compression ratio.

Good luck,
Hiro Nishio
Kobe, Japan

----- Original Message ----- 
From: "Ross & Georgia Kelly" <rgkelly@bigpond.com>
To: <mg-mmm@autox.team.net>
Sent: Thursday, January 01, 1970 11:16 AM
Subject: Compression Ratio


> MMM'ers,
>
> What would be recommended as compression ratio for supercharged 750cc J
> motor.
>
> Having recently stripped a few teeth from the crown wheel and pinion
> during
> the hill climb at the NAT Meet I am taking the opportunity as car is off
> road to have the engine rebuild as the compression was very low.
>
> regards
>
> ross
> J3763
> tight lines and corners
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