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edm lifter question #485126 10/01/09 01:35 PM 10/01/09 01:35 PM
Joined: Feb 2009 Posts: 1,705 Nebraska 70VcodeCoronetRT OP top fuel
70VcodeCoronetRT OP top fuel Joined: Feb 2009 Posts: 1,705 Nebraska	Hello, do you have to remove the inner springs for cam break in when using an EDM style lifter on a mild flat tappet cam. (560 lift 240 @.050 range) Thanks in advance

Re: edm lifter question [Re: 70VcodeCoronetRT] #485127 10/01/09 02:24 PM 10/01/09 02:24 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Do you want to get this wrong?? Why risk it... It has more to do with spring pressure than anything else.. typiclly if you have over 300 lbs @ full lift it is required.. But personally I would tend to be conservative & remove them even if the cam only sees 280ish over the nose...

Re: edm lifter question [Re: 1_WILD_RT] #485128 10/01/09 02:27 PM 10/01/09 02:27 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: Do you want to get this wrong?? Why risk it... It has more to do with spring pressure than anything else.. typiclly if you have over 300 lbs @ full lift it is required.. But personally I would tend to be conservative & remove them even if the cam only sees 280ish over the nose... That's a big 10-4. Fastest 300

Re: edm lifter question [Re: 70VcodeCoronetRT] #485129 10/01/09 02:28 PM 10/01/09 02:28 PM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	Quote: Hello, do you have to remove the inner springs for cam break in when using an EDM style lifter on a mild flat tappet cam. (560 lift 240 @.050 range) Thanks in advance Largely depends on the open pressure. FWIW I wiped a lobe using std. lifters with 350# open both springs installed. I pulled the inner spring on the subsequent break in Do you have to? No. Should you? Yes, absolutely. It's your motor though...

Re: edm lifter question [Re: 64Post] #485130 10/01/09 02:37 PM 10/01/09 02:37 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Hughes recommends it with all their dual spring applications. Fastest 300

Re: edm lifter question [Re: Crizila] #485131 10/01/09 02:47 PM 10/01/09 02:47 PM
Joined: Feb 2009 Posts: 1,705 Nebraska 70VcodeCoronetRT OP top fuel
70VcodeCoronetRT OP top fuel Joined: Feb 2009 Posts: 1,705 Nebraska	OK, thanks. Might have to bite the bullet and go roller then.

Re: edm lifter question [Re: Crizila] #485132 10/01/09 02:49 PM 10/01/09 02:49 PM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	Quote: Hughes recommends it with all their dual spring applications. Yeah John, I know if it were my engine I'd pull the inner springs regardless of the open pressure.

Re: edm lifter question [Re: 70VcodeCoronetRT] #485133 10/01/09 03:09 PM 10/01/09 03:09 PM
Joined: Jan 2003 Posts: 75,043 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,043 U.S.S.A.	Quote: OK, thanks. Might have to bite the bullet and go roller then. Why, because you have to pull the inner springs on break in ?

Re: edm lifter question [Re: JohnRR] #485134 10/01/09 03:23 PM 10/01/09 03:23 PM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	I went roller for no break in on the cam I also have 3 roller cams to play with,makes it easy to upgrade to next bigger one or step down one,dont have to keep the roller lifter in any speacal order either.. but thats me under the shadetree,I read to many post on here about wiping cam lobes and was a nervos nelly with my new engine combo

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