If your neighbors think the 7 is loud let them be thankful

[rikker]

you don't have this......

 

 

https://autos.yahoo.com/blogs/motoramic/listen-to-the-sound-of-a-28-5-liter-land-speed-record-car-fire-up-for-the-first-time-in-100-years-194558342.html

[MightyMike]

Very cool! Thanks for sharing! .

[coffee break]

It took some large ones to drive that car at +100 mph !

[xcarguy]

That's just wicked cool. :devil:

[Automoda]

Its the tires that would have scared me at any speed.

[scannon]

I see your puny four banger Fiat and raise you a Bentley named Mavis with a 12 cylinder, 43 liter Packard engine from a PT boat. 1,500 HP and 2,000 torque.

 

[Alaskossie]

Skip,

 

Notwithstanding the title, Mavis actually has a 24-cylinder Packard engine, not a 12 (or else each cylinder has two exhaust pipes).

 

Where is the catalytic converter, anyway?

[Nick OTeen]

Notwithstanding the title, Mavis actually has a 24-cylinder Packard engine, not a 12 (or else each cylinder has two exhaust pipes).

All the Packard PT boat engines were V12s.

[Alaskossie]

What was the exhaust layout, then? Why the 12 pipes on each side?

 

Twin exhaust valves with separate pipes?

[scannon]

All the Packard PT boat engines were V12s.

 

Yes, and they have two exhaust valves per cylinder so 24 stacks. The cat converters are in the same location as the Fiat. I'm sure the PT boats had mufflers and under water exhaust outlets to ensure quiet running (but no cat converters).