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Fred,
Are you going to contact him? Most of the
references appear to be for Chebbys.
Tom
----- Original Message -----
Sent: Thursday, June 21, 2007 4:59
PM
Subject: Re: IML: LPG Conversion
I just spent a little time on Google.
Check this site out for propane conversions.
-----
Original Message -----
From: "Rob van der Es"
To: mailing-list@xxxxxxxxxxxxxxxx
Subject:
Re: IML: LPG Conversion
Date: Thu, 21 Jun 2007 20:30:27
+0200
Hello Eric,
Nice to see that you are interested in
LPG conversions too.
Funny to notice that the price for LPG in your
area is amost the same as in my place in the
Netherlands.
I have
filled my tank today and the actual price at the moment here is
$1.99.
The price of petrol triples that..
The drop in fuel economy
was 10 % in my case,
and I didn't notice a power drop.
I have used
parts that should be available too in the US.
The convertor is made
by OMVL, an Italian
company (most LPG convertor factories are in
Italy actually), I have used type R90/E big
block version (up to 8
litres).
The gas intake ring on the carby comes from
Australia
and is made by SprintGas, it fits
perfectly on an Edelbrock carb or a
Carter.
You are right as far as the compression ratio
is
concerned, due to the high octane rate of
LPG (typical 110 in my
country) you can go has
high as 12:1 without the risk of
pinging.
You can also advance the ignition a lot, I have
set mine
to 12.5 degrees BTDC at the moment but
got even better results with an
advance of 14
degrees BTDC! However, since I run a dual fuel
setup I
risk pinging then when switching to
petrol in the case that I run out of
LPG.
To be safe in that situation I have set it to 12.5 degrees
BTDC.
Robert
----- Original Message ----- From: "Eric"
To:
Sent:
Thursday, June 21, 2007 8:03 PM
Subject: IML: LPG
Conversion
> LPG conversions have interested me in the
> past. It's about $1.99 a gallon in my area,
> whereas
premium petrol is currently running
> $3.16. Depending on the gas
metering valve,
> it's reported that a 10-20% drop in fuel
>
efficiency can be expected.
> I'm to the thought that if one ups the
> compression ratio that this can offset this
> decrease in
efficiency. I've read that the
> 105-110 octane that LPG provides has
a
> corelation to about a 12:1 compression ratio,
> which is
an easy swap to aftermarket HP
> pistons in a 440.
> LPG also
responds to recurving the ignition
> advance but I'm not sure if a
slower or
> faster advance is preferable.
> Rob, have you tried
any of these alterations to your motor?
>
> Eric
> 1964
Crown Coupe
>
__________________________________________________________________
>
Btw, if you need any further information about the LPG conversion
please
> let me know.
>
>
> -----------------
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-----------------
http://www.imperialclub.com -----------------
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Fred Joslin
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