Engine stop angle.

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Apr 28, 2002 | 10:56 AM

nothingbutford

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From: Walterboro, SC

Engine stop angle.

I hope this is in the right place. I was just wondering lately if an engine always turns off in the same position or if it just turns off wherever? Thanks. Benjamin

Apr 28, 2002 | 11:02 AM

Mil1ion

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Engine stop angle.

Are there cameras pointed at me ?
Am I on America's funniest home video's?

The engine stops where ever.
It doesn't stop in the same place.

When you shut the fridge door > does the light go out?

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Apr 28, 2002 | 12:25 PM

Vampiro

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Joined: Sep 2001

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From: Canada

Engine stop angle.

it just stops where ever. there is no special place

Apr 28, 2002 | 10:54 PM

the law

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From: Billings, MT

Engine stop angle.

If it's fuel injected it'll run upside-down until it can't suck anymore oil and it seizes. In which case, your engine has stopped at 180 degrees.

The Law

Apr 29, 2002 | 12:19 AM

canzus

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Joined: Jan 2002

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Engine stop angle.

> I hope this is in the right place. I was just wondering
>lately if an engine always turns off in the same position or
>if it just turns off wherever? Thanks. Benjamin

Actually, I've heard that engines do stop in the same
place, I just havent had the time, or the required
curiosity to find out for sure, maybe some day my
feline interest will get the better of me...

Steve & the Rockette
'63 F100
'68 F100
'72 Capri 2L
'73 Capri 2.6L V6
'73 MG B GT 2.6L V6(Ford)
'98 Contour SVT 2.5L V6 (Mods)
'01 ZX2 (No Mods yet)

Apr 29, 2002 | 09:40 AM

TallPaul

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From: Metro Detroit (Redford)

Engine stop angle.

I expect a multi-cylinder engine would stop at any number of places immediately prior to a compression stroke, which would be the main stopping agent. Then a one-cylinder engine likely would stop at about the same place every time--I think!

Apr 29, 2002 | 10:36 AM

nothingbutford

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Posts: 491

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From: Walterboro, SC

Engine stop angle.

Thanks for your replies. I was just wondering about that. Probably a stupid question. Benjamin

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Apr 29, 2002 | 11:07 AM

sauerf100s

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From: Ft. Walton Bch 32547

Engine stop angle.

Using logic, I would agree with TallPaul. One of the cylinders approaching the compression stroke would stop the engine from rotating any further.

Apr 29, 2002 | 08:07 PM

#10

caseman

Freshman User

Joined: Dec 2000

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Engine stop angle.

Isn't it true that some engines such as the 360 have a tendency to stop at one particular place, creating a couple of teeth on the flywheel that have a lot more wear and giving occasional trouble with starter engagement? I seem to recall this being an occasional problem. Not a stupid question at all.

Apr 29, 2002 | 08:15 PM

#11

Greywolf

Fleet Owner

Joined: Aug 2001

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From: Drummonds, TN USA

Engine stop angle.

Similar to an old roulette wheel, if there is a worn area on the shaft journals it is remotely possible that it will overcome the law of averages...

But where an engine stops depends entirely on when the mass of the pistons, crankshaft, and flywheel/clutch assembly cease to rotate.

There is (in direct answer to the question) no magic stopping place.

It's entirely random. Although it can be influenced by age of the engine.

Apr 30, 2002 | 08:54 AM

#12

odie780

Senior User

Joined: Oct 2001

Posts: 249

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From: TX

Engine stop angle.

Well it seems that every time I need to put a motor to TDC the mark is always on the bottom side! Is this chance I think not!

Apr 30, 2002 | 09:51 AM

#13

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Joined: Feb 2000

Posts: 5,130

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From: Brea CA

Engine stop angle.

I have heard this too over the last 30 or so years along with the wear spot on the ring gear so it’s not a stupid question, in fact it's a very interesting question. Everybody has their own “theory” about it here but I haven’t heard any evidence guys, just some lame jokes. It would be interesting if someone started taking “data” on their engine and posted back instead of what they think is happening. Greywolf might be on to something about a worn engine and uneven compression.

Barry

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Apr 30, 2002 | 11:10 AM

#14

Mil1ion

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Engine stop angle.

>Well it seems that every time I need to put a motor to TDC
>the mark is always on the bottom side! Is this chance I
>think not!

Okay,Try this.

Start and run that engine 10 times.
Each time you shut it off take a look at the position of the Distributor rotor,and note the postion it stopped at.

If it stops at the same plug position 10 times,you should have it figured out.

[b][i][font color=red]Dennis[/font][i][b]

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Apr 30, 2002 | 04:06 PM

#15

luv70sfords

Junior User

Joined: Mar 2001

Posts: 88

Likes: 2

From: Vegas

Engine stop angle.

I've never messed with actually lookin on a ford, but I know for a fact that Toyota 22R engine always stop Top dead center #1. Learned that in autoshop playin with the teachers lil pickup. We did a clutch job and just heated and moved the ring gear a quarter turn to give the starter a fresh bite.