No end play on driveshaft, Engine assembly Options

[Wew]

Hi all,

I have been rebuilding my engine and the typical one step forward and back certainly applies here.

My big concern at this point is that I have zero axial play when performing the driveshaft test with the dial gauge. I removed all three rings and still had no play.

A new flywheel is on. I buried my head in the sand and continued assembling with my old three round shims and clutch and pressure plate installed.

The motor still turns nicely after heads, spark plugs and everything assembled.

So now my mind races back to an earlier post I had about the oil pump install.

I remember pushing the oil pump in and i could feel it move the camshaft as I pushed it flush on the engine case.

The one gear in the oil pump that goes into motor to marry up with the cam was proud on the shaft and stuck out to the point when I installed the cover plate it created so much friction that I could not turn the motor.

I took the one oil pump with the gear shaft out and used my press to push it down just a bit on the shaft.

This seemed to do the trick as the gear no longer created that extra friction to keep the motor from turning over.

Now we fast forward to me measuring end play, and now that I have zero I can’t help but think that original push with the oil pump may have removed any play on the drive and cam shafts.

Again the motor spins nicely. Full on bottom and top end rebuild.

The story of the oil pump install is located here for those who want additional background.
“Oil pumps and covers, are they interchangeable “

Mark Henry had mentioned something about being able to do some adjusting with the block assembled.

Please advise,


Thank you much,

Gary




A few photos added to show the type of pump and the actual gear sitting proud.
So close:

[Wew]

Hi Andy,

I have been able to turn the engine over with no shims, with two and three shims.

I could not turn the engine over after I had installed the oil pump. What I found and if you look at the picture earlier in the post the gear sat proud. Once I put the plate on and torqued it down I couldn’t turn the motor. Took the plate off and motor turned.
I pressed the shaft into the gear just a bit so that it no longer protruded and sat flush like the other gear.
The gear was still on tight afterward. Now you got me thinking if that shaft may eventually come loose.
I may have been better off grinding the tongue rather than pressing the gear.
Sheesh, all these regrets and second guessing.
Better to think it through now why everything is accessible rather than later.

Thanks for asking the question and looking forward to others insight on this.

Thanks again,

Gary

[Krieger]

Most of us have been there at some point. Give yourself credit for being patient, using all your resources and taking the time to think things through.

[fixer34]

Hi Andy,

I have been able to turn the engine over with no shims, with two and three shims.

I could not turn the engine over after I had installed the oil pump. What I found and if you look at the picture earlier in the post the gear sat proud. Once I put the plate on and torqued it down I couldn’t turn the motor. Took the plate off and motor turned.
I pressed the shaft into the gear just a bit so that it no longer protruded and sat flush like the other gear.
The gear was still on tight afterward. Now you got me thinking if that shaft may eventually come loose.
I may have been better off grinding the tongue rather than pressing the gear.
Sheesh, all these regrets and second guessing.
Better to think it through now why everything is accessible rather than later.

Thanks for asking the question and looking forward to others insight on this.

Thanks again,

Gary

The oil pump situation is a problem, but should be unrelated to the crank end play issue, The oil pump connects to the camshaft; its end play is determined by the bearings.

Back to the crank end play; if it turns freely with 3 shims, it will always turn freely with none, 1 or 2. A little counter-intuitive, but adding shims decreases the end play clearance. Now if you want to try something, add a fourth shim (thin one if you have it) and gently tighten the flywheel bolts while spinning it. See if it starts to get hard to turn which means your endplay is now zero.

[Wew]

I got it!
Got 3 new shims. (Thanks Rich 914 werkes)
Did my push pull and low and behold .004”

I am pumped.

Thank you all who weighed in.

You all gave me perspective on how tight the tolerances are yet how important to understand the importance of them.

Moving forward.

Until the next hiccup

(IMG:style_emoticons/default/aktion035.gif)

[iankarr]

Congrats! Getting over these hurdles is half the fun...and the source of most great stories. Enjoy!

[bkrantz]

OT: Back in 1999 "Mars Climate Orbiter" crashed on mars because "Inch" and "Metric" where mixed up during calculations. When do you People go metric like the rest of the world? (IMG:style_emoticons/default/dry.gif)

The rest of the world? You mean the countries that have NOT landed a man on the moon? (IMG:style_emoticons/default/bootyshake.gif)

[DavidSweden]

The rest of the world? You mean the countries that have NOT landed a man on the moon?

They landed on the moon, who and when?