[DeTomaso] Dogbone airfilter questions
Will Kooiman
wkooiman at earthlink.net
Thu Nov 3 18:09:32 EDT 2011
Jack,
For a long time I thought about using a Vortech or Paxton carburetor
enclosure. It sounds like what you're doing, except that you are making it
vs. buying it.
When I went with Webers, that idea went out the window.
Will.
-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of JDeRyke at aol.com
Sent: Thursday, November 03, 2011 1:49 PM
To: mikael_hass at mail.tele.dk; detomaso at realbig.com
Subject: Re: [DeTomaso] Dogbone airfilter questions
First, there are at least three versions of the 'dogbone' air cleaner made
in the last 15 years and they are all somewhat different. They were
originally made for low-powered street rods so an air cleaner would fit
under their
hoods. Next, any alr cleaner needs at least 1/2" above the carb vents (and
more is better) so air can make the 90 degree turn into them. On some
dogbones, a 1" spacer ring improved air flow into the engine a bit by
raising the
body up. But that kind of negates the better rear sight-line you need. As
you
found, the small filters are pretty restrictive and adding two on a side
doesn't completely fix things. Sucking hot air rising off the headers does
cut
power with any air cleaner. Finally, installing a 12-lb aluminum casting
above the carb will not help handling.
With our shoved-back and lowered engine, I now use that same lightweight
Moroso offset dirt-track air cleaner base with a 14" paper filter. Another
option is a large oval air cleaner- a 14" round element is squashed flat in
the
middle so approximately the same size filter is used. Just throw away the
heavy high-bling "racing" cast aluminum top it comes with and cut a piece of
sheet aluminum for a top. A 3rd possibility is Spectre's carb-cap with 4"
connector hoses to remote elements. But pay attention to that 1/2" clearance
needed over the carb vents.
My current project- a welded aluminum 'can' that completely encloses the
carb alá Cobra to keep both heat & dust away, with 4" smooth-wall hoses back
alongside the trunk tub to big conical K&N filters, will probably be the
final iteration for us. Good luck- J Deryke
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