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 Post subject: Welded Mufflers (What are they?)
PostPosted: Mon Jan 25, 2010 2:48 pm 
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Joined: Mon Aug 24, 2009 1:48 pm
Posts: 80
Can you define what welded mufflers are? Are Flowmasters 40 series considered welded mufflers? Just trying to understand what's good to use.

Thanks,
Scott


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Mon Jan 25, 2010 3:40 pm 
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Joined: Fri Jul 25, 2008 12:26 am
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Location: Bristol CT
A welded muffler is a Pypes, Flowmaster style muffler. The case is welded instead of a crimped case.

In the last year or so, Pypes came out with a welded muffler that looks stock. It has an oval case, very nice piece :aok . I have them on my HP2 Belvedere I.

4.04 Mufflers must be stock looking in design (Welded mufflers not encouraged). Maximum muffler inlet and outlet is 2.5”.


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 3:09 pm 
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Joined: Mon Nov 02, 2009 8:28 pm
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Looking for the best flow through muffler that fits the rules. :hungry
I think my dyno max super turbo are hurting me.

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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 3:32 pm 
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Joined: Fri Jul 25, 2008 12:26 am
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Location: Bristol CT
I would go with the Pypes mufflers and take the points hit. It is the best muffler available and looks stock.

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66 Belvedere I HP2 Hemi Auto 11.13 @ 124MPH 1.68 60' S/A

70 RoadRunner 440+6 Auto 11.21 @ 124MPH 1.72 60' S/A

70 RoadRunner Hemi Auto 12.39 @ 113MPH 1.90 60' S/A

71 GTX 440+6 Auto 11.35 @ 123MPH 1.79 60' S/A

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72 Demon GSS 340 S/A 11.81 @ 118MPH 1.91 60' S/A


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 4:59 pm 
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Joined: Fri Jul 25, 2008 6:12 pm
Posts: 2462
Location: North Salem NY
I agree w ralph(finally)
I used to be that welded looked totally race!
But alot of them now are very neat, and oval as opposed to square with rounded edges!

I just changed from the cross flow i Had to two welded!
Didnt see more mph last week, but i think it sounds more mellow!

Definitly ditch the turbo mufflers :aok

There are some good offerings from borla too, that are oval, strait thru, and look pretty stock

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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 5:08 pm 
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Joined: Wed Jul 30, 2008 11:21 pm
Posts: 242
Probably the best crimped style non welded muffler is these

http://www.dynomax.com/mufflers.php?muffler=ultrafloss

17283 is a common 2 1/2" configuration that works well on most cars..side in center out. They are "straight" through with perforations with some sound absorbtion material.


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 6:08 pm 
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Joined: Mon Nov 02, 2009 8:28 pm
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Thanks I had just come across the Dynomax ultra flow, which seemed to fit the bill, when I thought I'd ask. Jeff who spec my cam told me they were probalbly hurting me, but until I saw an animation of the super turbo's flow I never figured it was so much of a restriction. :bow Two 180 degree turns

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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 6:59 pm 
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Location: North Salem NY
I think the dynomax are great
The problem with most test results ive researched on line is......

Who's doing the test!!
Just stay away from the turbo type or the chambered!

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10.74 130.34


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 8:22 pm 
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Thank you sir, I'm sure either one will be much better than my super turbo's, :drinking

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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 8:44 pm 
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Joined: Fri Jul 25, 2008 6:12 pm
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Location: North Salem NY
Yes,
Btw, thanks for the video.... Stunning
To see
We never get to see our cars run!
So cool, keep up the good work, ..... And the editing Lol

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69 Nova SS 396 L89
10.74 130.34


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 10:22 pm 
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Joined: Wed Jul 30, 2008 11:21 pm
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Agreed on that video ..Thanks! I new my camber was off and nose was sky high but that tells me tons. The camber is skewed because car was 1 inch higher on pass side when aligned...when i reset rear springs so car didnt sit crooked it made the camber on driver side go in and pass side go out just from the tilt of the car! I also have way to much front travel and the driver side a arms is binding at full drop. i think it get stuck at full extension!


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Fri Oct 21, 2011 10:48 pm 
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Joined: Fri Jul 25, 2008 6:12 pm
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Location: North Salem NY
Yeah.....!!what he said :rock

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69 Nova SS 396 L89
10.74 130.34


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 Post subject: Re: Welded Mufflers (What are they?)
PostPosted: Sat Oct 22, 2011 8:31 am 
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It doesn't look like the toe is changing that much at full drop. really packing some air under the nose. It seems to be an issue all the quick cars have.

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