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Lifter question

  
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Lifter question

 
bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/17/09
06:24 AM

I installed a cam and lifter into a 67 400. I set the lash to zero plus a 1/4 to 1/2 turn. I finished each adjustment on each lifter and went back to check tension on rods, and as I spin the push rod the lifters spin as well. Is this normal? I lined up the oil hole on the lifter to match the oil feed hole from the block. I am concerned that the lifters will rotate and no oil will feed them. Is this going to be a problem or do I need to readjust so after final adjustment the lifters don't spin?  

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/17/09
06:41 AM

The lifters are ground with a slight taper and are supposed to spin this draws oil between the lifter and the lobe surfaces best way to tell if the lifters are spinning is to watch the push rods and if they are spinning then that means the lifters are spinning as well if the push rods are not spinning then shut the engine off immediately and check for the problem.  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/17/09
09:43 AM

Thanks  

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/17/09
09:50 AM

No problem.  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

flynryan flynryan
User | Posts: 151 | Joined: 01/09
Posted: 10/21/09
05:44 PM

Lifters are supposed to and have to rotate in the bore. Otherwise one side of the lifter bottom would quickly wear down. Your lifters also have a grove all the way around them in which the oil hole is located. The oil flows around the lifter in the grove. You do not have to line the hole up with the block.

When a race cam has too much spring seat pressure, the tension on the rod then prevents the lifters from rotating which takes out the cam and lifters.  

bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/30/09
06:38 PM

I pulled the the carb, intake, etc to look at the cam and lifters. I readjusted the lash and I have one lifter not spinning as I crank the motor, all other lifters spin.
I have some wear on the bottom of the lifters and some on the cam. I don't know if the wear is normal. I took some pics. Can someone can tell me if the wear is normal and what would cause the one lifter to not spin?.

Sorry for such big pic's.

DSC03816

DSC03812

DSC03811



Thanks  

flynryan flynryan
User | Posts: 151 | Joined: 01/09
Posted: 10/30/09
09:12 PM

The bottom of the lifter should be smooth, with a polished look after it has run. I would replace that lifter. Check the feeling of a new lifter in the bore. Dose it slide up and down, and rotate easily?

Check the peak of the lobe on the camshaft for wear. It should be shiny or polished around the peak, but not more then 1/2 down from the peak. Compare the height of that lobe to others by look, or if you can use a lifter and a dial gauge comparing it to 2 other lobes.  

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/31/09
06:00 AM

Are all the lifters in such bad shape?  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/31/09
06:24 AM

All but one.
The lifter that is not in this shape is the one that has the push rod that doesn't spin at idle.  

barneyformula barneyformula
Addict | Posts: 3298 | Joined: 01/07
Posted: 10/31/09
06:29 AM

That's a strange looking wear pattern on the lifter for sure. Typically you see a shiny polished surface and maybe concemtric rings. Not looking good.
Steve  
A little help... 'cause we don't all have to learn the hard way!

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/31/09
07:09 AM

Have you check the lifters bores too see if there is a lot of clearance causing the lifters to rock back and forth in it's bore.  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/31/09
07:45 AM

Ya, There is no play in the lifters in a side to side motion.  

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/31/09
08:03 AM

Is there a number on the lifters that you can see?  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

bstrange bstrange
User | Posts: 84 | Joined: 08/09
Posted: 10/31/09
08:26 AM

No. I did post some pics through our PM. I'll talk to you through that post.  

Pontiacman8 Pontiacman8
Moderator | Posts: 5770 | Joined: 02/08
Posted: 10/31/09
08:41 AM

Yep  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8

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