I agree there is no reason he shouldn't be able to run
upwards of as much as 38 chokes to match dual 1.5" SU's
but he was saying his car ran fine with these chokes for the
jetting he was using.
You have to take into account what he has (found) available
to him.
He was running 34 chokes (see my DCOE picture page)
but for the engine mods he has he's getting great mileage
for DCOE's
Smaller chokes are much more streetable regardless of
jetting.
Paul Tegler ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From <Daniel1312 at aol.com>
To: <ptegler@gouldfo.com>; <millerls@ado13.com>
Cc: <spridgets@autox.team.net>
Sent: Thursday, March 01, 2001 5:37 PM
Subject: Re: Air/Fuel Ratio
> Paul,
>
> The jet calibration is apparently correct for the small
chokes that are
> fitted. However, I'd be more than inclined to believe
that something is NOT
> correct if a 1275 cc engine cannot run more than a 28mm
choke on just about
> any cam you can name let alone a mild cam.
>
> The efficiency of any given choke size is linked to the
air velocity that
> passes through them. However, if only a very small choke
size is being used
> in comparasion with what ought to be used then it is a
fair conclusion that
> something must not be right with the engine because it is
not sucking enough
> air through the chokes. If it was sucking the sort of
volume of air typical
> for the engine it would of course cope with a bigger
choke.
>
> If you are not convinced check out the 'choke' size on a
HS2 carb and tell me
> how much bigger it is than 28mm. And, yes I do realise
that the SU car is a
> variable venturi carb.
>
> Daniel1312
>
> In a message dated 01/03/01 13:17:22 Pacific Standard
Time,
> ptegler@gouldfo.com writes:
>
> << I'd be inclined to believe you've got it on track OK.
> The smaller chokes are what are allowing/creating a high
> enough velocity through the throats to properly draw fuel
and
> have it atomize efficiently.
>
> Paul Tegler ptegler@gouldfo.com www.teglerizer.com
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