Previous Thread
Next Thread
Print Thread
Valve to piston checking question #1656741
08/09/14 04:03 PM
08/09/14 04:03 PM
Joined: Oct 2003
Posts: 664
WI
6
68hemiss Offline OP
mopar
68hemiss  Offline OP
mopar
6

Joined: Oct 2003
Posts: 664
WI
I have a question on checking valve to piston clearance with a hyd cam. Should I use a solid lifter when checking - won't the hyd lifter give a false reading - not being pumped up?

Re: Valve to piston checking question [Re: 68hemiss] #1656742
08/09/14 05:11 PM
08/09/14 05:11 PM
Joined: Jan 2008
Posts: 1,212
Minn
S
SportF Offline
pro stock
SportF  Offline
pro stock
S

Joined: Jan 2008
Posts: 1,212
Minn
Use a solid lifter, or put a small washer in there to make it act like one. That will only work with a weak checking spring" though.

Re: Valve to piston checking question [Re: 68hemiss] #1656743
08/10/14 01:10 AM
08/10/14 01:10 AM
Joined: Nov 2010
Posts: 914
tn
R
robnbird Offline
super stock
robnbird  Offline
super stock
R

Joined: Nov 2010
Posts: 914
tn
Just use a solid lifter , that will be accurate enough

Re: Valve to piston checking question [Re: SportF] #1656744
08/10/14 01:24 AM
08/10/14 01:24 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Use a solid lifter, or put a small washer in there to make it act like one. That will only work with a weak checking spring" though.




And take your reading at the valve to make sure it is
traveling the distance it should be.. if your using
adjustable rockers you can adjust the rocker to make
sure you are getting full lift... if the solid or
what ever you use is a different height you could
end up short on the lift

Re: Valve to piston checking question [Re: MR_P_BODY] #1656745
08/10/14 04:39 AM
08/10/14 04:39 AM
Joined: Oct 2003
Posts: 1,794
BC Canada
O
ogopogo Offline
top fuel
ogopogo  Offline
top fuel
O

Joined: Oct 2003
Posts: 1,794
BC Canada
isnt it likely that the solid lifter will have a different pushrod cup height than the hyd lifter?
can you use a hydraulic lifter but make sure its full of oil?

Re: Valve to piston checking question [Re: ogopogo] #1656746
08/10/14 05:17 PM
08/10/14 05:17 PM
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,190
Bend,OR USA
Quote:

isnt it likely that the solid lifter will have a different pushrod cup height than the hyd lifter?
can you use a hydraulic lifter but make sure its full of oil?


if you use a very light pressure checking spring and make absolutely sure the hydraulic lifter does NOT collapse any, then yes you can Set the lash at zero and watch the lifter cup to retaining ring clearances and go from there Let us know what you find out another messy option is to prime the motor while doing the PtoV checking I've done that also


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)






Powered by UBB.threads™ PHP Forum Software 7.7.1