C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

easy question, which way does the engine spin?

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Old Sep 27, 2002 | 01:06 AM
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Default easy question, which way does the engine spin?

If you're sitting in the car, which way does the engine turn? My gut tells me clockwise but it's late and I can't be sure.

Also, a friend of mine told me that Fords actually turn the opposite direction of GM products. Any truth to this?
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Old Sep 27, 2002 | 01:18 AM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

It turns CCW looking from the driver's seat; CW looking from front back.
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Old Sep 27, 2002 | 01:21 AM
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Default Re: easy question, which way does the engine spin? (65Z01)

It turns CCW looking from the driver's seat; CW looking from front back.
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Old Sep 27, 2002 | 01:34 AM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

Which way do your belts spin>> I would say this would be a pretty quick way to figure it out>>> :jester
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Old Sep 27, 2002 | 09:25 AM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

If you're sitting in the car, which way does the engine turn? My gut tells me clockwise but it's late and I can't be sure.

Also, a friend of mine told me that Fords actually turn the opposite direction of GM products. Any truth to this?
Not only that, there are some engines used in boats that spin the opposite way.
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Old Sep 27, 2002 | 09:51 AM
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Default Re: easy question, which way does the engine spin? (Mr Mojo)

No, all front engined rear drive American engines spin the same way....... EXCEPT for some dirt track race engines....... the are reversed on purpose to plant the right rear tire instead of lift it......... :seeya
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Old Sep 27, 2002 | 10:25 AM
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Default Re: easy question, which way does the engine spin? (65Z01)

What??? I didn't say that :blueangel:


[Modified by 89vette, 9:00 AM 9/27/2002]
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Old Sep 27, 2002 | 10:44 AM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

:lol: I guess I'll just go have to look. Seems like if I punch the gas while sitting still it torques the car to the right, that's why I was thinking clockwise but my physics could be a little fuzzy.
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Old Sep 27, 2002 | 10:47 AM
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Default Re: easy question, which way does the engine spin? (vettmech)

No, all front engined rear drive American engines spin the same way....... EXCEPT for some dirt track race engines....... the are reversed on purpose to plant the right rear tire instead of lift it......... :seeya


Rotation is CLOCKWISE as viewed from the front of the engine. Even FORDS.

Multi Engined boats have one engine that is reversed.
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Old Sep 27, 2002 | 10:55 AM
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Yup, definitely CCW from sitting inside the car. When you use a timing light and you are "before top dead center" where is the timing mark on the balancer? Before the 0 mark closer to the top of the engine. When you are "after top dead center" where isthe timing mark on the balancer? After the 0 mark closer to the bottom of the engine. So the balancer is rotating TOWARDS you when you are standing there.
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Old Sep 27, 2002 | 11:29 AM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

:lol: I guess I'll just go have to look. Seems like if I punch the gas while sitting still it torques the car to the right, that's why I was thinking clockwise but my physics could be a little fuzzy.
For every action, there is an equal and opposite reaction:)
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Old Sep 27, 2002 | 11:43 AM
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Default Re: easy question, which way does the engine spin? (vettmech)

No, all front engined rear drive American engines spin the same way....... EXCEPT for some dirt track race engines....... the are reversed on purpose to plant the right rear tire instead of lift it.........
Okay, now MY physics must be off. It's been shown that American engines rotate CCW. This tries to rotate the car CW as sitting in it, so that puts more pressure on the right side of the car, correct? What am I missing?

Ah, of course, the midget classes, or whatever they're called. Those are rear-mounted engines, correct? So those would be turned 180 degrees compared to a front mounted engine. If they turned the same direction, you now have the engine torquing the car to the left, not the right. Making them run with opposite spin will now put pressure on the right side of the car.

Now I can say :smash: :D
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Old Sep 27, 2002 | 11:45 AM
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Okay, now MY physics must be off. It's been shown that American engines rotate CCW. This tries to rotate the car CW as sitting in it, so that puts more pressure on the right side of the car, correct? What am I missing?
The engine torques the frame in such a way that the right rear gets light. This is why you will commonly see battery relocation kits mounted over the right/rear tire. :)
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Old Sep 27, 2002 | 01:29 PM
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Default Re: (scorp508)

The engine torques the frame in such a way that the right rear gets light. This is why you will commonly see battery relocation kits mounted over the right/rear tire. :)
The resident physics major says Scorp is right.
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Old Sep 27, 2002 | 01:58 PM
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Default Re: easy question, which way does the engine spin? (Nathan Plemons)

From the driver's seat the crank shaft is turning in a CCW direction. This in turn attempts to turn the block in a CW direction, the equal an opposite reaction. The engine block torque is transfered to the frame through the engine and tranny mounts. Thus trying to rotate the car body in a CW direction. If the block wasn't fixed it would try to spin round and round just like the crank shaft. This is similar to a helicopter that loses its tail rotor. The body of the helicoper begins to spin because there is nothing to counteract the torque.
:)
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