Interesting exhaust comparisons

[bones]

This engine is not in my car (sadly)

In house muffler test, Caney Engineering, Ealing, England

Engine: 3.2 liters, 10.8:1 pistons, flycut for Solex (901) cam, 46 mm
Webers with 38mm venures, 1 5/8" Triad headers, flowed heads, Euro
(centifugal) distributor recurved, K&N air cleaners, MSO ignition, Amsoil
10-40 synthetic oil.

Baseline was determined by established maximum horsepower with 24" open
megaphones attached. This occurred @6100 rpm with a reading of 289.
Muffler tests were done at the same rpm with no changes except for final
exhaust.

Horsepower
----------
Open tapered megaphones 289 off meter
Triad dual outlet track unit 285 100 Db
Triad dual outlet 90 dB unit 283 88 Db
Leistritz (factory sport) 2 outlet 279 103 Db
Triad single outlet with crossover 279
Borla 277
Super trap (disced to 95 dB) 275
Flowmaster 273
Bischoff (factory stock) 272 84 Db
Bursch Steelpak(supplied with SSI systems) 270
Ansa (4 pipe) 269
Supersprint 267

Notes:
On the units where decibel readings were taken, they were
obtained by methods outlined in California DER Supplement 82, Part III,
17-18.76
The possibility exists that slight differences of comparatives could
occur with engines/headers of a different configuration or horsepower
band.

http://www.triadwestperformance.com

 

[Guest]

Wow bones thats a good set of data you have. How long did it take you to change the exhausts? Maybe you could come and do mine.

[]

H

 

[bones]

lol......god wouldn't it be nice to have the facilities and the time to do this sort of thing?

 

[Guest]

Bones, sorry did not read the very first line!!!!!!

Now I understand.