Re: Indy EZ-1 piston to valve clearance?
[Re: Mopar_Ray]
#953554
03/19/11 11:04 AM
03/19/11 11:04 AM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
super stock
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super stock
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Texas, USA
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I have a similar build, except a solid roller. My P2V clearance was .120 intake, I'll have to look at my notes for the exhaust. It was plenty. I used playdough on the pison, oil on the valves, installed head gasket, torqued to 30 ft.-lbs. Then removed, cut the playdough in half, and measured. I probably did it in a very archaic way, but that's how I have done my small block strokers as well and it worked for me.
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: Indy EZ-1 piston to valve clearance?
[Re: ChrgrCuda]
#953555
03/19/11 11:51 AM
03/19/11 11:51 AM
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Joined: Jul 2005
Posts: 512 Illinois
Mopar_Ray
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mopar
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mopar
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Quote:
I have a similar build, except a solid roller. My P2V clearance was .120 intake, I'll have to look at my notes for the exhaust. It was plenty. I used playdough on the pison, oil on the valves, installed head gasket, torqued to 30 ft.-lbs. Then removed, cut the playdough in half, and measured. I probably did it in a very archaic way, but that's how I have done my small block strokers as well and it worked for me.
Thanks, with hydraulic lifters they say to temporarily replace lifters with solids to check? Thats why I'm trying to figure if it will even be an issue. Kind of a pain to remove lifters just to check.
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Re: Indy EZ-1 piston to valve clearance?
[Re: Mopar_Ray]
#953556
03/19/11 01:33 PM
03/19/11 01:33 PM
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Joined: Aug 2003
Posts: 43,251 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,251
Bend,OR USA
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Quote:
Quote:
I have a similar build, except a solid roller. My P2V clearance was .120 intake, I'll have to look at my notes for the exhaust. It was plenty. I used playdough on the pison, oil on the valves, installed head gasket, torqued to 30 ft.-lbs. Then removed, cut the playdough in half, and measured. I probably did it in a very archaic way, but that's how I have done my small block strokers as well and it worked for me.
Thanks, with hydraulic lifters they say to temporarily replace lifters with solids to check? Thats why I'm trying to figure if it will even be an issue. Kind of a pain to remove lifters just to check.
It is always better to be safe than sorry Get the tools out and switch those two lifters and check the actual P to V clearances BTW, I'm running .060 P to V on my 440-1 headed 527 motor with a soilid roller cam, good valve springs(325lbs. on the seats and 830 lbs opened) and Harland Sharp rockers I like to see .080 but I'll live with .060 until it fails
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Indy EZ-1 piston to valve clearance?
[Re: Cab_Burge]
#953557
03/19/11 02:50 PM
03/19/11 02:50 PM
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Joined: Oct 2005
Posts: 8,890 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,890
Ontario, Canada
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Quote:
Thanks, with hydraulic lifters they say to temporarily replace lifters with solids to check? Thats why I'm trying to figure if it will even be an issue. Kind of a pain to remove lifters just to check.
And the pushrods will be significantly different for solids as opposed to hydraulics too.
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Re: Indy EZ-1 piston to valve clearance?
[Re: Mopar_Ray]
#953558
03/19/11 03:13 PM
03/19/11 03:13 PM
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Joined: Jan 2003
Posts: 75,071 U.S.S.A.
JohnRR
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Quote:
Getting ready to replace heads. Going to from 906 heads to EZ-1 heads. I know I should check, but may not even be an issue? Motor is a 440/505 stroker. SRP flat top pistons. Piston deck height is .025 below. Comp XE295HL Hydraulic, 251/257 duration, 564/564 lift cam. Trying not to "over think" this, anyone have a similar build? Is this even going to be an issue?
for a person to accurately answer this question the ywould have to have the exact same engine as yourself , exact , deck height , piston in the hole , same heads and cam.
What is such a pain to pull a lifter? You have to pull the heads which requires the intake to be off , the lifters are right there , do you piston to valve check with intake off.
Don't forget you need to swap 2 springs to lightweight checking springs , there is your pain ...
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Re: Indy EZ-1 piston to valve clearance?
[Re: JohnRR]
#953559
03/19/11 04:12 PM
03/19/11 04:12 PM
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Joined: Jul 2005
Posts: 512 Illinois
Mopar_Ray
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mopar
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Quote:
Quote:
Getting ready to replace heads. Going to from 906 heads to EZ-1 heads. I know I should check, but may not even be an issue? Motor is a 440/505 stroker. SRP flat top pistons. Piston deck height is .025 below. Comp XE295HL Hydraulic, 251/257 duration, 564/564 lift cam. Trying not to "over think" this, anyone have a similar build? Is this even going to be an issue?
for a person to accurately answer this question the ywould have to have the exact same engine as yourself , exact , deck height , piston in the hole , same heads and cam.
What is such a pain to pull a lifter? You have to pull the heads which requires the intake to be off , the lifters are right there , do you piston to valve check with intake off.
Don't forget you need to swap 2 springs to lightweight checking springs , there is your pain ...
Pardon by lack of knowledge, not worried about the "exact" clearance. But before pulling lifters, replacing with solids and swapping springs I thought someone might be running a flat top piston with a hydraulic cam. just want to know if its enough to get by until I move to a higher lift roller cam?
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Re: Indy EZ-1 piston to valve clearance?
[Re: JohnRR]
#953560
03/19/11 05:11 PM
03/19/11 05:11 PM
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Joined: Oct 2005
Posts: 8,890 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,890
Ontario, Canada
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Quote:
What is such a pain to pull a lifter?
I think the "pain" is having to buy 2 solid lifters and 2 checker pushrods !!
On the bright side, you're going to need the checker pushrods anyway since your head swap is going to dictate new pushrods.
And by the way, don't even think of running those EZ's "out of the box" if you got them from ICH. At LEAST blow all the passages clean and heve the valvejob checked.
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Re: Indy EZ-1 piston to valve clearance?
[Re: Stanton]
#953561
03/19/11 05:44 PM
03/19/11 05:44 PM
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Joined: Jul 2005
Posts: 512 Illinois
Mopar_Ray
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Quote:
Quote:
What is such a pain to pull a lifter?
I think the "pain" is having to buy 2 solid lifters and 2 checker pushrods !!
On the bright side, you're going to need the checker pushrods anyway since your head swap is going to dictate new pushrods.
And by the way, don't even think of running those EZ's "out of the box" if you got them from ICH. At LEAST blow all the passages clean and heve the valvejob checked.
OK,OK I'l buy the the lifters. Know I need the checker pushrods. More worried about switching to checking springs. Heads while not being ported, are being checked by a hghly respected builder.
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Re: Indy EZ-1 piston to valve clearance?
[Re: Mopar_Ray]
#953566
03/20/11 02:48 AM
03/20/11 02:48 AM
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Joined: Jan 2003
Posts: 75,071 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,071
U.S.S.A.
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Quote:
Quote:
Quote:
What is such a pain to pull a lifter?
I think the "pain" is having to buy 2 solid lifters and 2 checker pushrods !!
On the bright side, you're going to need the checker pushrods anyway since your head swap is going to dictate new pushrods.
And by the way, don't even think of running those EZ's "out of the box" if you got them from ICH. At LEAST blow all the passages clean and heve the valvejob checked.
OK,OK I'l buy the the lifters. Know I need the checker pushrods. More worried about switching to checking springs. Heads while not being ported, are being checked by a highly respected builder.
you don't need to buy 2 lifters , you can take 2 of your hyd lifters apart , pull the guts and fill the space with small machine washers and putthe cup and retaining ring back in and use the pushrods you have ... But with EZ's you need longer pushrods, if you have a hollow pushrod you can make a checking pushrod by cutting it , tapping the insides and using a piece of fine thread threaded rod .
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Re: Indy EZ-1 piston to valve clearance?
[Re: B G Racing]
#953569
03/20/11 08:56 AM
03/20/11 08:56 AM
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Joined: Jul 2005
Posts: 512 Illinois
Mopar_Ray
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Quote:
If your .025 in the hole,pistons are flycut(valve reliefs) or dished and you use a .030 to .050 head gasket with the 78cc EZ head you will not have any problems with a cam under .600 lift.
Bob, Exactly who I hoped might reply to this question!
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