Tanny's 1967 MGB GT

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tannyo
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Vehicles Owned: 1967 MGB GT
Location: North Hollywood, CA
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Falcon Big Bore Exhaust Muffler Replacement

Post by tannyo » Mon Aug 19, 2019 10:50 am

When I bought this nonrunning car in 2011 the previous owner had installed a Falcon Big Bore exhaust and header. By the time it was running in February 2012 the car had a beautiful exhaust note. It was louder than stock, but much quieter than Moss’ Tourist Trophy exhaust. As time went by the exhaust sound got louder and louder. Now with the choke on it’s over 95 DB. You can hear my car from blocks away. It’s just too loud. I think the Tourist Trophy exhaust is too loud.

If I was the original buyer of the exhaust, I could get it replaced under warranty. Unfortunately I’m not the original buyer and there is no warranty for Tanny. I’ve tried to find a replacement muffler from Falcon and could not find it at any of the sites I frequent for parts. So I decided to talk to several people and Joe Siam recommended Magnaflow. The Falcon muffler is 18” x 6” round with the inlet and outlet on one side of the muffler. The closest I could get was 18” x 6” round with the inlet and outlet centered. I think this’ll work. It will put the front of the muffler down about a half inch lower than the current installation and the back of the muffler at the same height with the exhaust now centered in the exhaust cutout instead of low.

71F69D86-F2D9-4C4D-8A81-5A1476E5823F.jpeg
71F69D86-F2D9-4C4D-8A81-5A1476E5823F.jpeg (46.86 KiB) Viewed 175 times

This is the muffler that I need from the Falcon Big Bore kit. Unfortunately I could not find it.
FA2FA58A-7F0B-4346-85AA-CD777F304DE5.jpeg
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This is what I ordered from Magnaflow.
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96229EAE-6718-409D-A145-C80AF020A35D.jpeg (15.01 KiB) Viewed 175 times

This is what I received. The discoloration is from the welds and dirt. Magnaflow told me that I could clean up the discoloration from the welds and a little soap and water would make it look like the picture. Maybe I expect too much for a $100 muffler.
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E8024518-1427-4E29-884D-8200852AEC9D.jpeg (67.63 KiB) Viewed 175 times

Tomorrow I get the muffler installed and I’ll take more pictures. Maybe I’ll do a video of how it sounds before and after.

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VWNate1
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Re: Tanny's 1967 MGB GT

Post by VWNate1 » Mon Aug 19, 2019 4:18 pm

You might have been able to match it better from a "Buyer's Guide, opps, gotta go....
-Nate

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VWNate1
Veteran Member
Posts: 1344
Joined: Sat Sep 05, 2009 7:41 am
Vehicles Owned: LBC's

Mercedes Diesels OM 616 & 617

1969 Chevrolet C/10 pickup shop truck
250 I-6 , TH350 slushbox

1959 Nash Metropolitan FH Sports Coupe

1961 Morris Minor W/ 1973 1275 CC engine & gearbox

Ural Solo Motos , old Honda 90 CC Tiddlers
Location: Sunny So. Cal. , land of fruits , nuts & flakes

Mufflers

Post by VWNate1 » Tue Aug 20, 2019 7:00 am

I've had very good luck using the paper catalogs from various muffler manufacturer's , Goerlich (SP ?) has a really good one , once you've measured the inlet & outlet diameter and figured out the available length and girth you can find a free flowing muffler that's not so noisy .

I'm not surprised magnaflow cheated you by displaying a polished into them delivering a crappy ugly thing and then giving you B.S. instead of making it right .

They lied to and cheated me badly, their red "revolver" show truck is my old 1949 Chevy I sold them for a song expecting them to be honest and return personal items left in it , they of course didn't until a big brouhaha OnLine embarrased them, I never did get all my things back, shame on them .

Anyway, go to NAPA and look in the paper "buyers guide.

Dammit, gotta go again, first day of school for a Foster boy .
-Nate

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tannyo
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Re: Tanny's 1967 MGB GT Muffler Replacement

Post by tannyo » Wed Aug 21, 2019 10:23 am

Here’s the video.



https://youtu.be/71_Mqe59xLQ

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whitebuffalo
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Re: Tanny's 1967 MGB GT

Post by whitebuffalo » Fri Aug 23, 2019 10:02 pm

Sounds good, more throaty.

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