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Pushrods Moving Out Of Solid Lifters
#2911782
04/18/21 09:30 PM
04/18/21 09:30 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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I have replaced a few sets of pushrods on my hydraulic flat tappet lifters in the past few years and while installing the rockers I had never had any issues with the pushrods moving out of the lifters while installing the rockers. I assume that the hydraulic flat tappet lifter had a deeper area for the pushrods to seat.
I just finished replacing my rockers while using solid lifters this time and I kept having a problem with the pushrods coming out of the solid lifters while installing the rockers. The pushrods coming out during the rocker assembly is a pain. I read last night about extending the adjusters while bolting down the rockers and this did help but I still had a few pushrods that kept getting hung up on the lifter and not giving me any slack to allow for the lash adjustment. I finally got them all installed and lashed but now after I am done I am curious if you have had this issue and how did you make the rocker install easier with solid lifters.
Note: I still had the intake on so this made it a little harder since I could not see the lifter seat.
Thanks!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Pushrods Moving Out Of Solid Lifters
[Re: 500ciDuster]
#2911797
04/18/21 10:18 PM
04/18/21 10:18 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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There is clearance in the block as I am running 5/16" pushrods. I checked clearance seated and at full lift and no issues.
This is an assembly issue that I am curious if there is a better way for future reference.once I figured out what was going on, I was able to move the pushrods into the lifter seats while screwing down the adjuster until the slack was taken up. Then as I bolted down the rocker stands a little at a time, I also backed off the the adjusters a little at a time and this kept the pushrods seated.
Thanks for the replies.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Pushrods Moving Out Of Solid Lifters
[Re: Cab_Burge]
#2911839
04/19/21 06:58 AM
04/19/21 06:58 AM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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Good idea guys!! Without the rod that you two were talking about, the pushrods were falling downward which seemed to allow the lower pushrod tip to come out of the lifter while I was trying to tighten down the rockers. So this is what I really meant by the pushrod moving out of the lifters. But what I am not sure of is what was the lower end of the pushrod sitting on if it was not in the lifter seat? Was it resting on the snap ring, or just on the edge of the lifter? Since the intake was on and the openings in the heads didn’t allow me to see down in there, I am not sure. But I was able to get the pushrods and the rockers assembled and lashed.
I was just curious as to a better way to make this process a little smoother for next time.
Thank you!!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Pushrods Moving Out Of Solid Lifters
[Re: YO7_A66]
#2911909
04/19/21 11:48 AM
04/19/21 11:48 AM
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Joined: Jan 2003
Posts: 4,737 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,737
Moved to N.E. Tennessee
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I have always used a piece of welding rod that I kept hanging on the side of a toolbox but I like Cab's dipstick trick. I'll try that next time.
Last edited by GomangoCuda; 04/19/21 11:55 AM.
In theory, there is no difference between theory and practice. In practice, there is.
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