[DeTomaso] Muffler Opinions

Julian Kift julian_kift at hotmail.com
Sun Aug 1 22:04:24 EDT 2010


But the fact is that even at 1" dia the two resonators provide only 1.6 sq in of area whereas a 2.5" dia inlet is 4.9 sq in. You need to get up to 1.75" dia resonators/tube before the outlet area is a big as the inlet.
 
Julian
 
> From: grayjim at att.net
> To: jtaphorn at kingwoodcable.com; pantdino at aol.com; shawkins777 at comcast.net; michael at michaelshortt.com; wkooiman at earthlink.net; mikeldrew at aol.com
> Date: Sun, 1 Aug 2010 20:24:20 -0500
> CC: DeTomaso at realbig.com
> Subject: Re: [DeTomaso] Muffler Opinions
> 
> To all,
> 
> When I talked to Fred Matsmoto about his Mind Train exhausts (before he
> retired) he told me that two sizes of resonators were available, 3/4 in.
> (standard) and 1 in. It would seem that we just need to find the source of
> those larger resonators.
> 
> Jim Gray 
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of John Taphorn
> Sent: Sunday, August 01, 2010 7:35 PM
> To: pantdino at aol.com; shawkins777 at comcast.net; michael at michaelshortt.com;
> wkooiman at earthlink.net; mikeldrew at aol.com
> Cc: DeTomaso at realbig.com
> Subject: Re: [DeTomaso] Muffler Opinions
> 
> Mike
> 
> For many owners, like you and I, who have already gutted their GTS and still
> 
> have the resonator restriction, the must be an easier solution.
> 
> I would think it possible to drill the resonators to an acceptable ID.
> 
> For example, if one fabricates an appropriate sized dowel to act as a guide 
> for a hole saw, that would get us a couple inches into the resonator. I am 
> not sure about the solution past that point. I guess one needs a really 
> deep hole saw unless you can figure out how to extract the cuttings.
> 
> Or, we do a group buy on an 1.5" or 1.75" drill bit and arbor to fit a 
> non-commercial drill and expand the resonator's diameter.
> 
> There must be a reasonable solution.
> 
> Who knows how to approach this problem?
> 
> JT
> ----- Original Message ----- 
> From: <mikeldrew at aol.com>
> To: <pantdino at aol.com>; <shawkins777 at comcast.net>; 
> <michael at michaelshortt.com>; <wkooiman at earthlink.net>
> Cc: <DeTomaso at realbig.com>
> Sent: Sunday, August 01, 2010 1:59 PM
> Subject: Re: [DeTomaso] Muffler Opinions
> 
> 
> > Jim wrote:
> >
> > I believe this is true no matter how long the tube is, the length
> > having a much lesser effect.So my point is that the SMALLEST point in
> > the whole system will determine the resistance.There is no point in
> > having 3" tubing if the muffler narrows to 1.5" somewhere inside-- the
> > resistance will be determined by that narrowest point. If I were
> > shopping for mufflers I would keep that in mind.
> >
> >>>>With this in mind, the factory ANSA mufflers including the GTS
> > mufflers are a bit of a disaster, due to the small inside diameter of
> > the resonator tips. The muffler itself might flow fine, but the
> > resonators act like big corks. My car is plenty powerful enough at the
> > moment, but if I ever found myself wanting more, I'd probably go
> > shopping for aftermarket tips to weld onto the back of my ANSA mufflers
> > in place of the factory tips. A same-size outside diameter with a much
> > larger inside diameter would be just the ticket for greatly improved
> > flow.
> >
> > Mike
> >
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