Author Topic: mufflers  (Read 1187 times)

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Offline old 429

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mufflers
« on: October 05, 2019, 11:51:27 am »
Hi guy's ,  what mufflers do you advice on a T/A tribute Mustang ?
I have now an open exhaust but must bring the loudness back to under 95 decibel .

Like to hear from you what suggestions  you have , a chambered muffler or a open flowmuffler  whit glaspack ?
what diameter inlet and outlet is the best .
302 max 8000 rpm 530hp
whas tinking to mount  them under the rear seat well , just in front of the rear axle .

Also found on Summit the BBK 31015 Varitune mufflers where you can play whit the sound .

please advice, Thanks

Simon

Offline 69MustangMike

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Re: mufflers
« Reply #1 on: October 05, 2019, 11:56:38 am »
I would try a set of spin-tech mufflers as they give you that sound ur looking for and have them on my 68 Charger and they sound superb. My charger is about 580 hp and a bit over 500 in torque

69 Calypso Corral B302
1970 Grabber Blue B302
1974 GTS Pantera
1970 Challenger R/T
1968 Charger R/T
1969 B302- brother of cc Boss above VIN 216
87 Conv Mustang 5.0
89 Hatchback 5.0
1970 B302 Cougar Eliminator matching #s

"I'm feeling fine in both my 69's"

Offline old 429

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Re: mufflers
« Reply #2 on: October 05, 2019, 12:08:31 pm »
Thanks Mike,I go look for them .
are there also any other ideas ?

regards
Simon

Offline crossboss

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Re: mufflers
« Reply #3 on: October 05, 2019, 04:15:32 pm »
I used a 3 inch straight through glass pack with the internal perforations. Its still going to be noisy, but it DID quiet it down considerably for around town/street driving. Btw, its really what you like/want in your car, as there are some good suggestions from others. IF you can, try and hear a car with the mufflers you are considering.
Current lifelong project:
1969 Mustang Fastback/FOX chassis, 5 speed, 4 wheel discs, with a modern Can-Am 494 (Boss 429), Kaase heads, intake mounted with a 1425 cfm 'B' Autolite Inline carb, ala Trans-Am style…Whew!

Offline hotrodford

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Re: mufflers
« Reply #4 on: October 05, 2019, 06:47:24 pm »
Lobaks!!!!

Online 1109RWHP

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Re: mufflers
« Reply #5 on: October 05, 2019, 10:53:51 pm »
What is your exhaust set up going to be? One 3" pipe out each side? Or Dual pipes out each side like a 69?  I have dual 3" pipes out each side with spintech mufflers and it was loud. Sounded freak'n awesome but a little too loud for street use. I made slip in baffles out of 2 1/4 perforated stainless tube wrapped with fiberglass that I got from a motorcycle shop. It took the edge off of it and made it much better.




Offline old 429

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Re: mufflers
« Reply #6 on: October 06, 2019, 01:46:48 am »
Thanks Guys,
I have 3"header output each side what goes whit  2 oval tubes to 1 oval tube accross under the shaft to the richt side .
I have problems   whit posting pic's .

Was thinking to go whit oval tubes each side under the body to the wells under the rear seats true a 2.5 or 3" inlet SpinTech 2000 oval Eliminator whit a single outlet  under the car whit a outlet tip what 's can be turned away from the Decibel meters what stands besides the track.
Or maybe to each side whit slip inn bafflers.
It takes maybe a few HP .

also go do some investigation on the Lobaks.

Simon

Offline crossboss

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Re: mufflers
« Reply #7 on: October 06, 2019, 06:53:17 am »
Thanks Guys,
I have 3"header output each side what goes whit  2 oval tubes to 1 oval tube accross under the shaft to the richt side .
I have problems   whit posting pic's .

Was thinking to go whit oval tubes each side under the body to the wells under the rear seats true a 2.5 or 3" inlet SpinTech 2000 oval Eliminator whit a single outlet  under the car whit a outlet tip what 's can be turned away from the Decibel meters what stands besides the track.
Or maybe to each side whit slip inn bafflers.
It takes maybe a few HP .

also go do some investigation on the Lobaks.

Simon



Simon,
Also remember some tracks DO have a noise limit (example Laguna Seca). Keep this in mind IF you intend to race at certain venues. Good luck on your choice!
Current lifelong project:
1969 Mustang Fastback/FOX chassis, 5 speed, 4 wheel discs, with a modern Can-Am 494 (Boss 429), Kaase heads, intake mounted with a 1425 cfm 'B' Autolite Inline carb, ala Trans-Am style…Whew!

Offline old 429

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Re: mufflers
« Reply #8 on: October 06, 2019, 09:28:41 am »
What is the best choice , stainless steel or aluminized steel ?
What are the good and the bad  isseus  ?

thanks again.
Oh bdw.  CrossBoss , I am located into The Netherlands rules are on track day's max 93-95 dB .
« Last Edit: October 06, 2019, 10:28:01 pm by old 429 »

Offline old 429

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Re: mufflers
« Reply #9 on: October 07, 2019, 09:29:44 pm »
I go the way whit Spin-Tech Mufflers 1000XP Super Stock Race , oval inlet , round outlet , than I can use slip in baffles when needed.
Regards
Simon

Offline MichaelSedlak

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Re: mufflers
« Reply #10 on: November 14, 2019, 07:18:34 am »
I use Lobak mufflers on my race car when needed and meet the 95 decibel limit at our local road race track.

Offline old 429

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Re: mufflers
« Reply #11 on: December 15, 2019, 09:49:47 am »
just an update,
last week I mount the Spin-Tech mufflers , sound is reduced to 90-100 dB level .
already have mounted into the outlet side baffles  .
need another 5 dB lower ,any sugestions to get this result ?
something into the inlet side ?
have problems to add pic's .
regards
Simon

Offline TACoupe

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Re: mufflers
« Reply #12 on: December 15, 2019, 03:58:33 pm »
Look here to see if you think any of these may work for you.

https://www.summitracing.com/search/part-type/exhaust-inserts

    Roy

Offline old 429

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Re: mufflers
« Reply #13 on: December 15, 2019, 11:03:25 pm »
Thanks Roy ,

Also just found out that Spin-Tech has oval inline mufflers too , first I go arange a drive-by dB measure when the road is dry up from raining.

Simon