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#1
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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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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#2
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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. |
#3
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Quote:
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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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports Last edited by RocktimusPryme; 07-09-2020 at 10:07 AM. |
#4
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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 |
#5
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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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77 Trans Am, 469 w/ported E-Heads via Kauffman, matched HSD intake, Butler Performance forged rotating assembly, Comp custom hyd roller, Q-jet, Art Carr 200 4R, 3.42s, 3 inch exhaust w/Doug's cutouts, D.U.I. Ignition. 7.40 in the 8th, 11.61@116.07 in the quarter...still tuning. |
#6
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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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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#7
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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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#8
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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 |
#9
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It's fine.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
#10
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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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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.64 @ 87.3 mph on slippery street tires.Bad 2.25 60ft.Owned since 86' |
#11
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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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"Honestly the car will only be there for a few weeks, OK maybe a month at the most" |
#12
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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.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#13
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Quote:
Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#14
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Quote:
After about 8 1/4 revolutions I realized my (nephew) never was turning it clockwise. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#15
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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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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
#16
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Quote:
Sent from my SM-G965U using Tapatalk
__________________
68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#17
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All is good leeklm, you bring a lot to this street forum.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#18
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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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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#19
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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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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#20
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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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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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