David,
Yes, the factory did fit some of their competition MGBs with HS6s and
special, larger intake manifolds. For street use, they are really only the
equivalent of a racing stripe on the hood, as the stock head flows so
inefficiently. Even with a properly ported and polished head, the benefits
of the larger carb will only be noticed above 5,000 rpm; with gas costing
what it does these days and the increasing scarcity of traffic-free roads
where our cars can be driven in a spirited manner, my preference is to
retain the stronger torque characteristics of the 1-1/2" SUs.
Lawrie
British Sportscar Center
----- Original Message -----
From: "David Woerpel" <dwoerpel@wi.net>
To: <mgs@autox.team.net>
Sent: Thursday, March 11, 2004 8:52 AM
Subject: Re: SU Carb identification
> Paul,
>
> According to my Haynes SU Carburettors, HS6's were used on the 240
> (2.4L) series Jaguar from 1967 to 1969. The prefix should be AUD xxx
> and F for front or R for rear. The 1310 he refers to is the float bowl
> number (?) and not the application. Anyone know if you can tell
> application from the float bowl number?
>
> AYMK, you want to measure the diameter of the bore on the manifold side
> of the carb. If it is 1 3/4" it is an HS6. The question I have are
> these mixed and matched? In other words, different dashpots for
> different pistons. They really ought to be a matched set.
>
> Didn't MGB's run HS4's and HS6's were a go-faster mod? Anyone? Lawrie?
> Barney?
>
> Good luck,
> Dave
> 59 :{)
> 59 MGA 1500 (H4's)
> friend's 64+4
>
> Paul M. wrote:
>
> >I need to get a set of rebuildable 1 3/4" SU's - the
> >HS6's - and I came across these on eBay today:
> >
>
>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=3355
0&item=2465456375&sspagename=STRK%3AMEBBI%3AIT
> >
> >Are these essentially the same carbs?
> >
> >=====
> >Paul Misencik - 1971 MGB - www.sopwithracing.com
> >
> >THE CAROLINA TROPHY - 2005
> >A vintage driving event in the spirit
> >of the Mille Miglia, Rallye des Alpes,
> >and Colorado Grand.
> >See www.carolinatrophy.com for details.
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