Morel lifters from 7.40 to 7.20 push rod
12-01-2004, 07:01 PM
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Morel lifters from 7.40 to 7.20 push rod Does this seam odd. My car normally would use a 7.40 push rod(milled heads .016 and smaller base circle cam by .025), now since switching to the new morels, I now need a 7.20 push rod. I am just worried about this. I have an adjustable push rod so I know it right, it comes up with about 3/4 turn to 22ft after zero lash. I am also running Harland Sharp rockers.
Last edited by Brent02; 12-01-2004 at 08:02 PM.
12-02-2004, 04:35 AM
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Thanks. This just confirms something is wrong with my set up. Looks like I am going to take the lifters out over the weekend. I will give Morel another call before removing them. I did purchase from a forum sponsor and I have that been able to get ahold of them for the last seven days. The main phone number has been out of service.
12-02-2004, 11:47 AM
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Originally Posted by Cstraub
What is the width of the contact area on the valve after a full rotation of the cam lobe/lifter on a valve.
Chris
Chris
Last edited by Brent02; 12-02-2004 at 11:53 AM.
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12-02-2004, 03:54 PM
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Originally Posted by Cstraub
No. ..the width of the area traveled by the roller on the tip of the valve will tell you if the geometry is correct. You will need a set of dial caliper and a magic marker.
Chris
Chris
Originally Posted by Cstraub
No. ..the width of the area traveled by the roller on the tip of the valve will tell you if the geometry is correct. You will need a set of dial caliper and a magic marker.
Chris
Chris
OK.. I also own two dial indicators both with magnetic bases, but are hard to use on an mostly all aluminum engine with a plastic intake
12-02-2004, 06:28 PM
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Wow, nice link. My current setup looks exactly like number 5 of the Geometry lesson (short push rod). Now if I get the geometry correct (longer push rod) then my preload will be off. How can I correct this?
12-02-2004, 06:32 PM
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Originally Posted by Brent02
Wow, nice link. My current setup looks exactly like number 5 of the Geometry lesson (short push rod). Now if I get the geometry correct (longer push rod) then my preload will be off. How can I correct this?
Order the correct push rod length.
Shim the rockers to get the proper preload.
Ed
12-02-2004, 06:53 PM
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Originally Posted by EDC
Set up the heads for proper geometry.
Order the correct push rod length.
Shim the rockers to get the proper preload.
Ed
Order the correct push rod length.
Shim the rockers to get the proper preload.
Ed
12-03-2004, 08:38 AM
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Originally Posted by Brent02
Ok, So the first thing is to get the geometry correct regardless of preload then add shims to correct that. I was thinking that the length of the push rod would control both. I see that was wrong. How can I "Set up the heads for proper geometry"?
I'm probably going to get in trouble with the forum police but I can get push rods in .005" increments so don't panic if the push rods length comes up weird. It happens all the time when you do it correctly! Just get the swipe in the middle and as small as you can. It takes time and patience but it worth it.
Ed
12-03-2004, 12:01 PM
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Originally Posted by EDC
What Chris said!
I'm probably going to get in trouble with the forum police but I can get push rods in .005" increments so don't panic if the push rods length comes up weird. It happens all the time when you do it correctly! Just get the swipe in the middle and as small as you can. It takes time and patience but it worth it.
Ed
I'm probably going to get in trouble with the forum police but I can get push rods in .005" increments so don't panic if the push rods length comes up weird. It happens all the time when you do it correctly! Just get the swipe in the middle and as small as you can. It takes time and patience but it worth it.
Ed
Thanks.
12-04-2004, 08:12 AM
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Originally Posted by Beast96Z
You should never set preload with the pushrods...... If you have a lifter handy, measure the legnth of it from head to toe. My morels are 2.782" tall for comparison.