# Engine Theory Question

Discussion in 'The Lounge' started by ARAMP1, Feb 6, 2007.

1. ### ARAMP1Aviator Extraordinaire

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There is/was an equation where you could determine the ideal V angle of an engine, but I've forgotten it and can't seem to find it. Any help?

2. ### ARAMP1Aviator Extraordinaire

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I think it assumed that opposite banks of cylinders shared the same crank pin.

3. ### dogdaysunrise1/2 ton status

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you might have better luck with this one in the Garage.

4. ### ARAMP1Aviator Extraordinaire

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I think I've kind of figured it out. I believe the angle between the V needs to be a multiple of 720/#of cylinders. (unless you have something like an odd fire V6 which instead of 60/120 degrees between the V you have 90 and it fires at 90 between each bank and 150 degrees between the three 90s.)

5. ### UseYourBlinker1 ton status

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So if a fat chick falls in the forest? Do the tree's hear it?

6. ### dogdaysunrise1/2 ton status

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They uproot from the quake.

7. ### Corey 78K51 ton status

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The only engine that I know of that shares the same crank pin/journal is the Harley Davidson V-Twin. It is that configuration that gives it that distinctive "Harley" sound........

8. ### ARAMP1Aviator Extraordinaire

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Pretty much every domestic 90 degree V8 that I can think of has opposite cylinders sharing crank pins. IE; in a small block chevy, there are 5 main journals and 4 connecting rod journals.

9. ### Corey 78K51 ton status

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I guess I was thinking of V-twin motorcycle engines Hell I don't know it was on some show I watched once. Fock it it's late I'm going to bed.......

10. ### ARAMP1Aviator Extraordinaire

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It's all good, bro.

11. ### 3 on the tree1/2 ton status

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I don't know the equation, but here's some food for thought;
At one time Cadillac made either a V12 or V16 with 135 degree cylinder angles. I wonder what THAT crankshaft looked like????

12. ### 1979jimmy3501/2 ton status

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are you thinking of what the best angle for a given number of cylinders in a v configuration, as to why the 60 degree V6 is 60 degrees?

13. ### kgillyk51/2 ton status

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How did I get in the Garage??? Wait...WTF???,...where am I?