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RE: Compression Ratio

To: "'Hiro Nishio'" <hiro@octagongarage.com>, "'Ross & Georgia Kelly'" <rgkelly@bigpond.com>, <mg-mmm@autox.team.net>
Subject: RE: Compression Ratio
From: "Lew Palmer" <lpalmer@roundaboutmanor.com>
Date: Tue, 19 Apr 2005 14:08:29 -0500
In-reply-to: <00b101c544e9$a5f45890$0c01a8c0@OCTAGONGARAGE>
Reply-to: "Lew Palmer" <lpalmer@roundaboutmanor.com>
Sender: owner-mg-mmm@autox.team.net
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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