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Re: Spongy hydraulic lifter after camshaft change
[Re: JimG]
#2134710
08/16/16 10:04 PM
08/16/16 10:04 PM
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Joined: Aug 2003
Posts: 43,161 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,161
Bend,OR USA
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If you want to try to fix those two lifters you can either dirve it for a while longer or remove them and take them apart to see what you find. I've have a tiny bit of debris in the poppet valve beteen the cup and the main body by taking them apart. That was a long time ago(mid 1990s) on some hydraulic lifters that came in one of Ma Mopars old milder grind cam kits That valve is in a cup that pulls off the base of the pushrod seat bottom,it has a tiny spring and seat inside it Let us know what you decide to do and find out
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Spongy hydraulic lifter after camshaft change
[Re: Cab_Burge]
#2134741
08/16/16 10:22 PM
08/16/16 10:22 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I wouldn't be afraid to swap in the innards from another lifter even used ones & see what happens. keep everything in order. the bottom face that contacts the lobe is unchanged so I see no harm no foul & it might take up the play & solve it.
live every 24 hour block of time like it's your last day on earth
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Re: Spongy hydraulic lifter after camshaft change
[Re: JimG]
#2135082
08/17/16 01:21 PM
08/17/16 01:21 PM
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Joined: Jan 2003
Posts: 14,496 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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I'd run it again to see if you could repeat those results(same two soft, and only those two).
In the past several years, I haven't seen to many hyd lifters stay pumped up solid for too long after engine shutdown and the valve is open with high spring pressure trying to bleed the lifter down.
If the cam you bought is a fast rate .904 lobe profile, it's may be noisier in general than what you're expecting.
This isn't to say you don't have two spongy lifters, I'm just saying I'd verify you can repeat the results before I took anything apart.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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