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Old 07-09-2020, 09:02 AM
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Default Turned the wrong way

I had my nephew turning my engine over while I ran the pump just to keep things lubed like my machinist said. After about 8 1/4 revolutions I realized my never was turning it clockwise. Any reason to suspect damage? I turned it back counter clockwise and nothing seemed amiss.

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Old 07-09-2020, 09:05 AM
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What do you mean??

Clockwise at the crank is correct.
Only the distributor turns counter clockwise because it's on the other side of the camshaft.

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Old 07-09-2020, 09:08 AM
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Quote:
Originally Posted by Formulajones View Post
What do you mean??

Clockwise at the crank is correct.
Only the distributor turns counter clockwise because it's on the other side of the camshaft.
I was thinking the same.

Either way I doubt there would be any damage. Ive moved backwards before while looking for TDC and all. Never that many turns, but I cant see how it would be a problem.

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Old 07-09-2020, 09:42 AM
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You could have spun the oil pump backwards and it still wouldn't have hurt anything in 8 or even 10 turns. Just not enough pressure to wipe an oil film gone.

Clay

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Old 07-09-2020, 09:47 AM
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Smokey Yunick, who won the Daytona 500 with a Pontiac, is famous for devising engines and complete drive trains that ran "reverse torque", essentially running the opposite direction. It helped the cars turn left.
Engines don't care what direction they turn, as long as they have oil.

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Old 07-09-2020, 10:39 AM
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Turning it with a breaker bar on the crank clockwise. Maybe a full combustion cycle at best

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Old 07-09-2020, 11:11 AM
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He turned the engine by hand while you ran oil pump with drill counterclockwise? If so your fine

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Old 07-09-2020, 11:45 AM
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Biggest problem with engines that sit for a long time isn't bottom end lube.

It's wrist pins and cylinder walls.

Clay

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Old 07-09-2020, 12:42 PM
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It's fine.

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Old 07-09-2020, 12:45 PM
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You might want to check the torque setting on the balancer bolt. Other than that it shouldnt hurt anything.

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Old 07-09-2020, 01:21 PM
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Old Pontiacs are not like some newer engines with chain and belt tensioners that could cause problems if they become unloaded.

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Old 07-09-2020, 02:38 PM
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When he was turning it backwards, the only difference was the oil pump was no longer moving any oil upward to the block/oil filter. Turning the engine by hand 90 degrees at a time and spinning the oil pump with a properly modded distributor tool just makes sure all of the rods and bearings, and the lifters/rockers got a dose of oil before fire-up.

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Old 07-09-2020, 03:16 PM
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Quote:
Originally Posted by 64speed View Post
Turning it with a breaker bar on the crank clockwise. Maybe a full combustion cycle at best
You are more than fine as clockwise is the correct direction for the engine/crank. Crank bolt should be plenty tight as he was effectively tightening that as well.

Sent from my SM-G965U using Tapatalk

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Old 07-09-2020, 03:35 PM
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Quote:
Originally Posted by leeklm View Post
You are more than fine as clockwise is the correct direction for the engine/crank. Crank bolt should be plenty tight as he was effectively tightening that as well.

Sent from my SM-G965U using Tapatalk
(I READ IN HIS POST THAT INITIALLY HIS NEPHEW WAS NOT TURNING THE ENGINE CRANK IN A CLOCKWISE ROTATION SEE QUOTE BELOW)

After about 8 1/4 revolutions I realized my (nephew) never was turning it clockwise.

Tom V.

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Old 07-09-2020, 03:43 PM
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Quote:
Originally Posted by leeklm View Post
... Crank bolt should be plenty tight as he was effectively tightening that as well...
Actually counter-clockwise would be the direction to loosen it, but if nephew exceeded 160 foot pounds turning over engine there would be more serious problems than a loose bolt.

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Old 07-09-2020, 05:01 PM
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Quote:
Originally Posted by Tom Vaught View Post
(I READ IN HIS POST THAT INITIALLY HIS NEPHEW WAS NOT TURNING THE ENGINE CRANK IN A CLOCKWISE ROTATION SEE QUOTE BELOW)



After about 8 1/4 revolutions I realized my (nephew) never was turning it clockwise.



Tom V.
My bad, I missed the word "never" in that statement...

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Old 07-09-2020, 05:16 PM
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All is good leeklm, you bring a lot to this street forum.
Tom V.

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Old 07-09-2020, 06:13 PM
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To be clear he was turning it over clockwise like a Chevrolet. I noticed after he had made about 3 revolutions and said no Pontiacs spin counter clockwise. We reversed course and everything seemed ok. Is it all good?

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Old 07-09-2020, 07:24 PM
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Never mind this. Trust me I just realized how big a dumbass I am. Distributor turns “backwards” not the engine. I told you I had TBI. I just had counter clockwise on the brain and panicked when I saw him

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Old 07-09-2020, 08:26 PM
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Chevrolet Engine Distributor Rotors rotate CLOCKWISE when the crank is also turned clockwise..
Pontiac Engine Distributors rotate COUNTER-CLOCKWISE when the crank is also turned clockwise..
There is no backward or forward on distributor rotations.

You are not stupid. You just do not have much experience with Pontiac Vehicles and vehicle parts and that lack of knowledge is further hampered, you say, by your TBI.

Just keep trying.

Tom V.

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