Need help badly crank shaft seized

[Greatlifejohn]

Also a good idea is to compare the marks on your new crank sprocket to your old crank sprocket, Count the teeth in between the marks and compare them ,they should be the same . There were a few bad batches that came marked wrong from Boundry awhile back ,I assume this issue was corrected pretty fast by them though. I didn't see what brand you installed with the oil pump but it is worth checking !

Mmr for both

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[SheepDog]

Yeah I get what your saying but if I spin the cam back to

Yeah Exactly what I was thinking just put the chains back on try to spin it if I can rotate fully a couple times then it’s fixed if not then then a valve probably bent… other than that if the piston is hitting a valve it’s just means I need to correct the level of the valves by resetting the timing on the cams…correct me if I’m wrong

Just because you can rotate the engine freely does not remove the possibility of a bent valve, or being a tooth off on a sprocket, it just means that you are not so far out of time that a piston is contacting a valve.

If you have only rotated the engine by hand, it is highly unlikely that a valve was bent when it came into contact with the piston. If you tried to start the engine, you are fucked.

If you did bend a valve, the entire thing has to come back apart anyway and the head removed.

If it were mine, I would set the timing correctly, verify that you have no interference, and then fire it up.

 

[Timbuck]

Just FYI, if you hold the accelerator to the floor and hit start, it kills the injectors and it will turn the motor over for 5-10 seconds. That's what I use for oil changes to build pressure before actually starting.

Good luck OP. It sounds like everything is probably fine, but I'd be pulling it apart and making sure everything is right before I pushed the start button.

correct. I learnt this from another forum member after I posted about starting the car haha. Now I do it on Oil changes also. Next weekend will be the first after the new build.

good luck OP.

 

[Greatlifejohn]

Just because you can rotate the engine freely does not remove the possibility of a bent valve, or being a tooth off on a sprocket, it just means that you are not so far out of time that a piston is contacting a valve.

If you have only rotated the engine by hand, it is highly unlikely that a valve was bent when it came into contact with the piston. If you tried to start the engine, you are fucked.

If you did bend a valve, the entire thing has to come back apart anyway and the head removed.

If it were mine, I would set the timing correctly, verify that you have no interference, and then fire it up.

Yeah I never tried to start it the whipple isn’t even on yet

 

[Timbuck]

For me page 9. Steps 6 and 7 are critical as a lot of people stuff that up. Full rotation and then back to 12 o’clock With out that things hit together.

also something to note with cam phasers ON. Is it possible to get cams in correct position without seeing the timing marks on them ?

 

[SheepDog]

Yeah I never tried to start it the whipple isn’t even on yet

Id recommend getting the motor running and verifying that everything works properly before you start the Whipple install.

 

[shogun32]

Id recommend getting the motor running and verifying that everything works properly before you start the Whipple install.

whatever happened to the grizzled ethos of damn the torpedoes, full speed AHEAD!
pussies one and all!

 

[DougS550]

Just because you can rotate the engine freely does not remove the possibility of a bent valve, or being a tooth off on a sprocket, it just means that you are not so far out of time that a piston is contacting a valve.

If you have only rotated the engine by hand, it is highly unlikely that a valve was bent when it came into contact with the piston. If you tried to start the engine, you are fucked.

If you did bend a valve, the entire thing has to come back apart anyway and the head removed.

If it were mine, I would set the timing correctly, verify that you have no interference, and then fire it up.

whatever happened to the grizzled ethos of damn the torpedoes, full speed AHEAD!
pussies one and all!

Wow, quoting Rear Admiral David Glasgow Farragut

 

[Sngx1260]

I have a thought…..hate to admit it, but I made this mistake when i rebuilt my engine.

I had the same issue with my crank and spent a significant amount of time trying to figure out why it wouldn’t rotate completely. After a few weeks of head scratching, I removed the oil pump and shockingly it would rotate freely and easily. Turns out, I got a few bolts mixed up and one of the crank counterweights was hitting the bolt.

Hope this fixes your issue.

 

[DougS550]

I have a thought…..hate to admit it, but I made this mistake when i rebuilt my engine.

I had the same issue with my crank and spent a significant amount of time trying to figure out why it wouldn’t rotate completely. After a few weeks of head scratching, I removed the oil pump and shockingly it would rotate freely and easily. Turns out, I got a few bolts mixed up and one of the crank counterweights was hitting the bolt.

Hope this fixes your issue.

Just wondering. Where is the crank counterweight? I have to say I have not seen a counter weight on a crankshaft.
Thanks

 

[Greatlifejohn]

I know this is old but I got some free time for the holidays… I went out to the car today and the problem was the oil pump bolts I tighten them down to much … Everything else seemed fine

 

[K4fxd]

Where is the crank counterweight? I have to say I have not seen a counter weight on a crankshaft.
Thanks

 

[Greatlifejohn]

I have a thought…..hate to admit it, but I made this mistake when i rebuilt my engine.

I had the same issue with my crank and spent a significant amount of time trying to figure out why it wouldn’t rotate completely. After a few weeks of head scratching, I removed the oil pump and shockingly it would rotate freely and easily. Turns out, I got a few bolts mixed up and one of the crank counterweights was hitting the bolt.

Hope this fixes your issue.

This is the exactly what was happening took all the screws from the pump I notice 1 screw was coming out very rough like it had bent… Got the screws and the tips of the screws had dents in them lol..

 

[DougS550]

I must have got what you said wrong. I thought you said something about a bolt on the crankshaft counter weight which their are none. The crank counterweight lobes are used to balance the crank shaft by removing material from them. My bad

 

[526 HRSE]

Yeah I definitely wasn’t going to try to start it I’m not putting anything back together until it’s spinning 380 non stop… took me like 2 hours to get the timing cover off and valve covers… plus I need a new timing chain tensioner

Asking for 380 may be overkill.

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