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  How loud are 3" Borla Sportsman Mufflers?

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Author Topic:   How loud are 3" Borla Sportsman Mufflers?
steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
Registered: Mar 2000

posted 11-22-2002 09:09 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Compared to single chambered Folwmaster race mufflers?

Rob, you run Borlas right? I got a line on a pair of the 3" X 15" long ones for the other project. Will it be quiet enough to drive to the track w/o tickets?

SteveW

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V8 Thumper
Gearhead

Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 11-22-2002 09:12 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
I can't help with the thread topic, but what other project?

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
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Fastymz
Moderator

Posts: 9095
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 11-22-2002 09:15 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by V8 Thumper:
I can't help with the thread topic, but what other project?


Read this you'll get the idea.

https://mustangsandmore.com/ubb/Forum12/HTML/003965.html

Hey Steve dont worry about it,I dont think Andy or Barney will ever notice you.


SCOOP

------------------
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

[This message has been edited by Fastymz (edited 11-22-2002).]

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kid vishus
Gearhead

Posts: 3894
From: middle of NC
Registered: Oct 2000

posted 11-22-2002 09:20 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
I dont know about the ticket Steve. I have 3.5" in/out 16" long Borlas on my car, and although they are fairly quiet for a racecar, they would probably be considered loud for a street car. They do have a really deep sound to them, unlike the flowmaster race muff's. I'm sure the slightly smaller diameter would help quiet them some, but I'm not sure if it would be enough. Another thing to remember is, I dont have any pipe on mine. They have been welded to flanges and are bolted directly to the hedder collector. Some actual exhuast pipe might quiet them down a little to.

I have to unload it tomorrow to do a little wiring on the 'brake, and also to change the oil. If you want, email me your home phone # and I will call ya and you can hear for yourself.

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
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posted 11-22-2002 09:37 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Rob,

That's cool but I'll own them tonight. We run the 1 chamber 3" flows on the 'stang and it's trailered to the track. I think I could get away with driving that if I stayed out'a the go peddle. I'm gonna run the Borlas with no tailpipes too, so It'll be good. I'll e-mail my number, and feel free to call anytime.

SteveW

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Glens67
Gearhead

Posts: 217
From: Petaluma
Registered: Mar 2002

posted 11-23-2002 12:36 AM     Click Here to See the Profile for Glens67   Click Here to Email Glens67     Edit/Delete Message   Reply w/Quote
Turn downs helps alot. Got the cam and slugs in. Connect the timing chain saturday and degree the cam. Metcalf still does not have the Valve for the head.

------------------
Glen
67 GT 390
65 Galaxie 500 XL 4 Speed
It was not a Red Light they gave me a Slow Tree

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
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posted 11-23-2002 12:53 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Metcalf....

The ultimate machine for the bowtie folks, yawn.....

See you Sunday.

SteveW

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 11-23-2002 01:32 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Not loud at all. They have a very mellow tone without tail pipes slipped on right over the collector. I have them on the convert so we can move the car around without annoying the neighbors.
Borla gave some to us for R&D work and we tried them on all three cars. They slowed MM down .15 and Tony's car and the convert both a full .2. If you intend on doing any serious racing with mufflers succesfully, you need to have a custom cam ground.

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Alex Denysenko
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NHRA/IHRA/SRA member and licensed Superstock driver
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Quote #1: "I never met a magazine mechanic I liked."
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Moneymaker
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posted 11-23-2002 01:33 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Oh yeah, they are very light weight, durable and do not rust.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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steve'66
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From: Sonoma,CA,USA
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posted 11-23-2002 01:53 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
Not loud at all. They have a very mellow tone without tail pipes slipped on right over the collector. I have them on the convert so we can move the car around without annoying the neighbors.
Borla gave some to us for R&D work and we tried them on all three cars. They slowed MM down .15 and Tony's car and the convert both a full .2. If you intend on doing any serious racing with mufflers succesfully, you need to have a custom cam ground.


Thanks Alex and Rob,

Slowing the car down is not a problem. I got the pair for $102 so I can't bytch. We'll give them a try next season. Most of our racing is all corked up Alex,
I know, but the future of our sport will have to make h.p. thru the mufflers.

SteveW

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thumpin cat
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Posts: 129
From:
Registered: Mar 2002

posted 11-23-2002 02:20 AM     Click Here to See the Profile for thumpin cat     Edit/Delete Message   Reply w/Quote
hey steve, how loud are those 1 chamber flowmasters?, and do they sound anything like the 40 series flowmasters?

please let me know thanks

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kid vishus
Gearhead

Posts: 3894
From: middle of NC
Registered: Oct 2000

posted 11-23-2002 09:24 AM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
They slowed MM down .15 and Tony's car and the convert both a full .2.


WOW. I must be lucky. Mine didnt slow the car down even .05. Maybe it's because mine are 3.5" diameter?

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Moneymaker
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posted 11-23-2002 10:44 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
950 CFM vs 400 CFM makes a little difference Rob.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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V8 Thumper
Gearhead

Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 11-23-2002 10:47 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
950 CFM vs 400 CFM makes a little difference Rob.


From 3" to 3.5"?

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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Moneymaker
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posted 11-23-2002 11:26 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Clarification.
KV runs a 950 CFM carb on his car vs the 400 CFM carb that I use on MM. Although he is correct, there will be much less loss in performance with a 3.5 muffler, the greatest variance is in the size of our carbs. There will be much less loss with a large carbed engine as it does not have to fool itself. There is far less reversion with a large carb.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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V8 Thumper
Gearhead

Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 11-23-2002 11:36 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Ok, thanks for that

I was getting the sawzall and torch all ready to go hack the 2.5" tubes out from under my car

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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kid vishus
Gearhead

Posts: 3894
From: middle of NC
Registered: Oct 2000

posted 11-23-2002 12:27 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
950 CFM vs 400 CFM makes a little difference Rob.


Oh, I never took the carb into consideration as to having an affect with mufflers. But it makes sense.

I learn something new everyday if I pay enough attention.

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Moneymaker
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From: Lyons, IL, USA
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posted 11-23-2002 12:50 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
We all do here on M&M Rob. That's the beauty of the place.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
Registered: Mar 2000

posted 11-23-2002 04:09 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by thumpin cat:
hey steve, how loud are those 1 chamber flowmasters?, and do they sound anything like the 40 series flowmasters?

please let me know thanks


They are loud, too loud for the street. They sound like 40 series, only louder.

SteveW

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