• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)
Tips
Tips

why does a Healey exhaust sound the way it does?

twas_brillig

Jedi Knight
Country flag
Offline
I did a couple of searches on this site plus on the web, but the best I could find was in a for sale ad: "Nothing beats the purr of an Austin Healey exhaust sound and there is a mechanical explanation for the unique harmonic sound of Healeys and Jags of these years."
Okay - what is that explanation, and can the sound be reproduced using other six cylinders engines (eg BMW)?
Thanks,
Doug
 

Cottontop

Jedi Warrior
Offline
I'm sure that it has to do with the firing order, the divided/split exhaust manifold, and the diameter and length of the twin exhaust pipes creating a zero-beat frequency as they bounce off of each other.

I don't know about many other cars, but I know by comparing the two in the late 50s, a 1954 Chevy Blue Flame 6 cylinder with a split exhaust manifold and dual glass packs comes pretty darn close.

Tim
 
Country flag
Offline
Both my ///M Rdsts are inline sixes, same firing order and similar under-square displacement (3.2 litre).

The two (2) BMW engines, the 99 a type S-52 and the 01 a type S-54, sound distinctly different from each other (even with the same OE or aftermarket exhaust fitted) and likewise sound nothing like the Healey.

There is some commonality of design parameter, but I think the inlet and outlet port configuration, cam and ignition timing has more to do with the audio quality of the combustion process.
 

Roger

Luke Skywalker
Bronze
Country flag
Offline
I remember hearing a works Pound-and-a-half (240Z) Datsun on the RAC Rally of BG some years ago. It had a similar sound.
 

AH100M

Jedi Trainee
Offline
When I was in college I used to be able to recognize the sound my friend driving up to my house, in his 1967 3000, from about 100 yards away. What was it? The hiss of the SUs.
 

Michael Oritt

Yoda
Silver
Country flag
Offline
Simple--the exhausts were tuned to the cash register.
 

bighealeysource

Jedi Knight
Offline
I don't know why a Healey sounds like it does but just glad it does! Nothing
will cure a bad day like starting up your Healey and listening to that
great exhaust note as you take off down the road.
Regards,
Mike
 
Country flag
Online
You get a different sound depending on the exhaust system you use (duh). When I put an Ansa system on my BJ8 I thought the exhaust note had a higher pitch than a stock system--almost like a Ferrari note (but half as many pulses, of course). I cobbled together a system with the Ansa piping and some off-the-shelf glasspacks and it sounds more like my V-8 Mustang than a Ferrari now. Ironically, it's pretty loud at idle and around town, but on the highway the exhaust noise almost goes away (at least as heard from the cockpit). There's some acoustic theory at play, but it's beyond me to explain it.
 

BoyRacer

Jedi Warrior
Country flag
Offline
A Healey sounds the way it does because of the style of muffler it has. In addition to being a real Healey vintage racer, I am also a Nasty Boy - I have a Healey 3000 with a Datsun 280Z motor in it. I use a stock Healey muffler and no one can tell the difference in the exhaust note between an Austin six and the Datsun six. The Datsun motor is a 2.8 liter in-line six for those who do not know.
On a different note (pun intended), I use a single chamber Flowmaster on my racecar ('59 3000) and a lot of people think I have a V-8 in it.
 

dougie

Luke Skywalker
Country flag
Offline
Re: why does a Healey exhaust sound the way it doe

Hey Richard -

Don't be so modest.....I thought most would enjoy seeing your exploits, as well
that great engine note of yours. https://www.youtube.com/watch?v=GHe7hyc9-54
 

why

Jedi Trainee
Offline
Hah! '63-'67 in college, New Orleans, on way to twice a week dreaded 8am class sometimes without going back to dorm after night in French Quarter, there was a guy in a Healey that would drive through campus, remember as if yesterday. Mine has a Stebro side exhaust, own charm, but not the same true throaty purr
65 3000
 

Keoke

Great Pumpkin
Country flag
Offline
twas_brillig said:
I did a couple of searches on this site plus on the web, but the best I could find was in a for sale ad: "Nothing beats the purr of an Austin Healey exhaust sound and there is a mechanical explanation for the unique harmonic sound of Healeys and Jags of these years."
Okay - what is that explanation,

OH!! It was just an accident that is all-- :laugh:


and can the sound be reproduced using other six cylinders engines ----Sure--- :laugh:
(eg BMW)?
Thanks,
Doug
----Keoke :smile:
 
Similar threads
Thread starter Title Forum Replies Date
A Does anyone know anything about this healey??? Austin Healey 11
Randy Harris What does a Healey rent for? Austin Healey 4
D What does a DAILY driver big healey cost today? Austin Healey 30
Got_All_4 TR5/TR250 New Hazard Relays Does Anyone know How to Hook Up Triumph 7
steveg TR6 Metal Dash - does anyone make one? Triumph 13
NutmegCT Does this ad seem a bit peculiar? Other Cars 8
S TR2/3/3A What does a condenser do? Triumph 21
pbraun How much does a BJ7 or 8 transmission weigh? Austin Healey 3
D Does this count as British car? Spotted 18
BN6_2197 How does the flasher unit work Austin Healey 4
J TR6 Does this sound ok to you? Triumph 5
BN6_2197 Analyzing Problem of Flasher Unit [warning lamp does not work] Austin Healey 10
B Does anyone still make or sell a quality condenser? Austin Healey 14
T Which Lucas dynamo does a BJ7 have? A C45?? Austin Healey 6
T TR2/3/3A Does this sound like fuel pump problem? Triumph 15
S TR2/3/3A The big brass drain plug on the OD does not thread in easily Triumph 9
F How does overdrive Annulus effect speedometer Austin Healey 10
T General Tech Transmission Countershaft - What Car Does This Fit? Triumph 1
D Does a BJ 8 need a vented fuel cap? Austin Healey 4
RAC68 How does a 12 Volt Alternator charge a battery to read 18+ Volts Austin Healey 8
drooartz The correct tool does make it easier [fill steering rack] Spridgets 4
B MGA What does this founder mark mean? MG 4
D TR2/3/3A Gas tank does not fit! Triumph 4
Got_All_4 TR6 How does this steering lock come off Triumph 9
Gerry M TR6 Overdrive does not engage Triumph 13
HighAltitudeTR3 TR2/3/3A How does this sound?! [Video] Triumph 8
C TR6 ZS 175 What does this screw do? Triumph 2
HealeyRick Who Knew Martin Jansen Does Bikes? Austin Healey 0
Rut How much does a 1275 weigh? Spridgets 8
JPSmit Fuek Tank Sender - does this seem right to you? Spridgets 3
HighAltitudeTR3 TR2/3/3A How does this sound?? Triumph 6
Popeye TR4/4A Found this odd long bolt in my fuel tank... Does anyone know what it is? Triumph 17
simon1966 Does taking a stock BN1 and adding M bits increase its value? Austin Healey 10
D TR4/4A how hot does the timimg chain cover get? Triumph 15
D TR4/4A Does a bolt legend exist? Triumph 3
Rut How does this happen? Spridgets 9
Michael Oritt Does anyone drive with bias-ply tires? Austin Healey 40
simon1966 Does anyone use 48 spoke wheels on a 100? Austin Healey 21
T TR2/3/3A Does your rotor wiggle Triumph 15
M TR2/3/3A Engine does not shut off right away. Why? Triumph 8
B Does a 100 Six with no heater have demister vents? Austin Healey 5
M TR2/3/3A Where does this screw go? Triumph 6
T TR4/4A Does the water pump need to come off to remove the cylinder head? Triumph 5
Got_All_4 TR2/3/3A What direction does the head gasket go? Triumph 4
M TR2/3/3A Does anybody use the oils and lubes from the moss motors site? Triumph 3
T What is needed for a 'big brake' upgrade; how well does it work? Spridgets 14
Sarastro TR4/4A TR4 saga continues: why does Craigslist attract so many flakes? Triumph 16
B Tie Rod - Engine: What is it and where does it go? Austin Healey 12
GTP1960 General Tech Water Wetter, does it work? Triumph 24
KVH TR4/4A Long Speedo Cable for Overdrive--where does it get tied down? Triumph 7

Similar threads

Top