Originally Posted By: Spazdog
Triples.
Funny how the 2stroke triples sound more like an I6 (barring the scavenging exhaust note). Very cool on a bike
Originally Posted By: 440Magnum
Originally Posted By: bama7x57
The V-16 cadillac of the 30's were pretty cool.
I've only seen one.
You know Caddy built TWO completely different V16s back then, right? One was a narrow-V pushrod design (45-degree?):
The other was a wide-V (135 degree) flathead. The flathead was the later and more powerful of the two, ironically. Link to image here, can't embed:
http://www.jalopyjournal.com/forum/attachment.php?attachmentid=759128&d=1253085814
Note that unlike Ford flatheads, the exhaust ports are on top of the engine and thus very near the exhaust valve, avoiding the Ford problem of a long exhaust passage through the block that rejects a ton of heat (unnecessarily) to the coolant.
Ah V16- bet it pulls like a 'locomotive'

Cool thing about 12cylinders and above is that the starter motors don't "jitter" from compression resistance, bc there's that much cylinders! Smoooth
Originally Posted By: 440Magnum
http://atomictoasters.com/wp-content/uploads/2011/01/deltic_animation.gif
An actual Deltic diesel cutaway:
http://upload.wikimedia.org/wikipedia/commons/2/2a/Napier_Deltic_Engine.jpg
And ohmigod, the SOUND of a Deltic:
http://www.myspace.com/video/sparkypete/napier-deltic/46840284
and
http://www.youtube.com/watch?v=gtv0s1JQ0D4&feature=endscreen&NR=1
http://www.youtube.com/watch?v=gBkQQftn-AM
http://www.youtube.com/watch?v=Vzmz3ZqQIS8
http://www.youtube.com/watch?v=Z_Kh0o3sPoY
Would you believe I've never heard of the Deltic engine until I read this? never seen an opposed cylinder engine in action ...Strange and thus AWESOME.
Originally Posted By: bar1
I like the third harmonics dominated sound that is common with I5 and V10 engines
nail'd it! That is precisely why they're so "endearing" to me. It almost seems more natural too, 5 fingers, 5 toes, 5 cylinders
Originally Posted By: OVERKILL
I love the sound of a number of V8's, particularly the Ford Windsor and Modular engines. Not a fan of the blatty (low power density) SBC's, but a built one making lots of snot sounds decent enough. A BBC sounds great, just like a BBF
I think the BMW V8 sounds pretty cool too! So does the V10.
+1. As for V8's, the SBChevy's (brace yourselves) are overrated!!
Don't have a lot of experience with the Fords, the Windsor is a nice one. The modular is quite smooth, you can barely hear then running from the back of a cruiser
I'm kinda partial to the BOPs just because they're sort of forgotten, and they have nice long strokes, longer than comparable SBChevys with their huge bores, particularly a Pontiac 421 SuperDuty. Longer strokes and 2 valve designs go well together IMO. Torque beast!
Originally Posted By: 440Magnum
Some people love flat-crank v8s and V10s... neither of which sound at all pleasing to my ear. The mismatched overtone form combining the two firing intervals on a V10 particularly sounds wrong to me.
And whoever it was who loved Detroit Diesel 2-strokes.... those used to be fingernails on the chalkboard and vinegar on a paper cut to me when they were really common. The sound would give me a headache in 2 minutes flat (probably from the months spent on older research ships where there were several running constantly 24/7). But now that they're getting to be somewhat rare, its kinda nostalgic when I hear that blood curdling scream they make. And its a bonus if they do the old "Detroit surge" at idle. ;-)
Yup, know where you're coming from. Some people like the lumpy chut chut, which may be appropriate sometimes, and some of us like even firing orders.
Have we failed to mention any engine so far?