Adjustable push rods

Discussion of the 331-354-392 HEMIs.

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besty34
Posts: 4
Joined: Wed Sep 12, 2012 2:40 pm

Adjustable push rods

Post by besty34 »

I've bought a rebuilt 341 DeSoto with adjustable pushrods - the cam is reground by the looks of it , it's all ready to go but I just want check everything before I fire it up - does anybody know the clearances on the rockers ? Thanks
besty34
Posts: 4
Joined: Wed Sep 12, 2012 2:40 pm

Re: Adjustable push rods

Post by besty34 »

Sorry just noticed I put this in the wrong place - I will repost it
DHEMI
Posts: 100
Joined: Mon Mar 06, 2006 8:01 am

Re: Adjustable push rods

Post by DHEMI »

I know it may seem odd to ask,but is it a solid or hyd.lifter ?
besty34
Posts: 4
Joined: Wed Sep 12, 2012 2:40 pm

Re: Adjustable push rods

Post by besty34 »

They are hyd , so am I right in thinking that it's just a case of taking up the play , then readjusting after the lifters have pumped up ?
wayfarer
Posts: 83
Joined: Sun Feb 26, 2006 4:16 pm
Location: Peoples Republic of Oregon

Re: Adjustable push rods

Post by wayfarer »

Most cam/lifter manufacturers will suggest 0.040" to 0.060" preload on the hydraulic lifter.
With the lifter sitting on the base circle (heel, back side, whatever) open/extend the pushrod until all slack is gone but the puck has not yet moved. Now, open an additional 1 2/3 turns (at 32tpi this gets you about 53 thou) and lock the nut.
Repeat 15 more times. Yes, it will be handy to bend a couple of end wrenches to better fit the space.
www.qualityengineeredcomponents.com
Early Hemi Parts and Pieces,

INVENTORY CLEARANCE IN PROGRESS. See website for details.
besty34
Posts: 4
Joined: Wed Sep 12, 2012 2:40 pm

Re: Adjustable push rods

Post by besty34 »

Thanks for that
George
Posts: 692
Joined: Wed Aug 25, 2004 4:12 pm
Location: Fl

Re: Adjustable push rods

Post by George »

On my 331 I just snugged them, any more it wouldn't run.
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