here are the salient sections culled from my emails.
cheers
Something along these lines? ;)
http://www.britishv8.org/Other/RayBencar.htm
Okay, so it's not using SUs ...
There's a member of the British Car Forum who races who has a cold air box
setup for a tri-carb. Try posting your question there (
http://www.britishcarforum.com)
No measured drawings but here are the particulars.
The seams are welded. Overall length is 14 and is 3x3 (a snug fit on the
inside of the 4 inch diameter duct - used the pi x r squared formula for the
inside circumference of the duct.) The arc at the back is 3 inches. Also,
had to have welded in a pipe at the rear for the vent-to-crankcase hose.
Finally added a screw hole in the bottom-back to use as a drain for
collected oil from the vent. This turns out to not really be needed as the
cleaning out can be done when the piece is off.
The separator vane in the middle is 1/16 thick and runs from the front of
the box and then curves inward to meet the inside piece of the box just a
bit behind the front carb intake. This separates the airflow for the two
carbs and also provides more linear air flow to each.
And BTW I had to cut out the shroud support there as it interfered with the
duct. I fabricated another support which had about 1.25 inch offset toward
the inside in order to clear the duct. Look at the pic.
Try this web site. He makes them and they are very good. He has three
Healeys and has done restoration on over 60 Healeys including the paint
and body on two of mine. He has lots of stainless re=pro parts also.
Jim Frakes
http://www.wickerizedhealey.com/manparts.htm
i would recommend exploring racing intake tubes vs cold air box if the
objective is to improve air flow into the manifolds. cold air box on the
100M was to supply COLD air, not to serve as a ram air induction device. in
fact, the cold air box as conformed can cause slight vortex disturbances
interfering air supply to the rear intake.
i bought a period cold air box on EBAY a few years back, and in the course
of its life the back end had been hacksawed off. i asked around and was
advised by an old salt that racers used to do this to ensure that airflow to
the front and rear manifolds was even, and that the intended purpose of just
supplying good cold air was fulfilled
You can always use Stub Stacks which go inside the air cleaner to
increase the airflow, kind of like using ram pipes with the stock
filter. They are available at
http://www.aptfast.com
You can always use Stub Stacks which go inside the air cleaner to
increase the airflow, kind of like using ram pipes with the stock
filter. They are available at
http://www.aptfast.com
http://www.englishparts.com/productSearch.aspx?searchTerm=cold%20air%20box
--
I Erbs
Portland, OR
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