using the manley "correct pushrod length tool"

[Clem Z.]

was on the board several days ago and how to use it was the question. the answer given was incorrect and here is the correct answer. with the lifter on the base circle of the cam slip the tool over the stud. if the tool hits both the push rod and the valve stem tip at the same time the pushrod is the correct length. if it touches the valve first the pushrod is too short. measure the gap using a feeler gauge and this is the length the pushrod needs to be lengthen. if the tool touches the pushrod first measure the gap between the tool and the valve stem tip and this i how much shorter pushrod you need. any questions e mail me.

[Joe L.]

Re: using the manley "correct pushrod length tool"

clem-----

Another approach using this tool is to use it in conjuction with an adjustable pushrod, especially the Comp Cams micrometer adjustable type. With the cam on the base circle and the Manley tool in place, install the adjustable pushrod and and adjust its length so that it just touches the Manley tool. Then, read the required pushrod length off the adjustable pushrod scale.

I agree, though, that your method will work just as well and is less expensive (you don't need the adjustable push rod).

[Tracy C.]

Correct for both hydraulic and solid lifters? *NM*

[Joe L.]

Re: Correct for both hydraulic and solid lifters?

Tracy-----

Hydraulic or mechanical lifter-equipped engines make no difference in the procedure.

[Clem Z.]

the pushrod seat in the hyd lifter must

compressed(preloaded) .020/.040 to get the correct length. if you do not compress the hyd lifter pushrod seat the reading will show a correct length pushrod .020/.040 too long. it is best to use a solid lifter to get the correct length and with a compressed hyd lifter you will then have the correct length pushrod. most pushrod are sold in .050 increments so if you are off by .020 that should not be a reason to change.