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  #1  
Old Feb 25th, 13, 10:38 AM
DT DT is offline
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Default Morel 4603 lifters BBC

Anyone using Morel lifters 4603 on a BBC? What pushrods are you using ???
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  #2  
Old Feb 25th, 13, 11:30 AM
cstraub cstraub is offline
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Default Re: Morel 4603 lifters BBC

MOrel lifters are built to GM factor height. If you have aftermarket heads you need to measure the pushrods. I recommend a 3/8" with a swedged end.

OEM heads would be around 7.800 and 8.650" in length.
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  #3  
Old Feb 25th, 13, 12:37 PM
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Default Re: Morel 4603 lifters BBC

Thx, I have aluminum heads.
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  #4  
Old Feb 25th, 13, 12:42 PM
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by DT View Post
Thx, I have aluminum heads.
Best bet would be to get some adjustable check pushrods and some lighter check springs for the heads and use the mid-lift method to select the correct length pushrods. You can have custom length pushrods made up in any length you need from Trend and others. Google "midlift method for valvetrain geometry" for more information on this. If no luck, PM me and I can email a couple of PDF documents that explain it pretty thoroughly.
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  #5  
Old Feb 25th, 13, 01:03 PM
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Default Re: Morel 4603 lifters BBC

Hey thanks Tom. I will check it out.
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  #6  
Old Feb 25th, 13, 03:04 PM
67RS502 67RS502 is offline
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Default Re: Morel 4603 lifters BBC

Chris whats your opinion on using check springs?
I always use the real springs, but just wondering...
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  #7  
Old Feb 27th, 13, 09:13 AM
cstraub cstraub is offline
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by 67RS502 View Post
Chris whats your opinion on using check springs?
I always use the real springs, but just wondering...
I like using the real world set up also.

Sorry I missed this post of yours.
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  #8  
Old Feb 27th, 13, 12:43 PM
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by cstraub View Post
I like using the real world set up also.

Sorry I missed this post of yours.
Chris, I assume you use a solid lifter of some type to keep the plunger from being compressed? What is a good substitute for the Morel hydraulics?
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  #9  
Old Feb 27th, 13, 12:49 PM
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Default Re: Morel 4603 lifters BBC

Talk about thread Hijacking!!!
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  #10  
Old Feb 27th, 13, 12:57 PM
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by DT View Post
Talk about thread Hijacking!!!
Sorry, wasn't my intention to hijack - I thought it was related to the original post since you need to determine your correct pushrod length. Some people use check springs in the heads when doing this because the regular springs will compress the plungers and throw the reading off. I'll step off since you apparently don't need / want my help.
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  #11  
Old Feb 27th, 13, 01:00 PM
cstraub cstraub is offline
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by RSSSfanatic View Post
Chris, I assume you use a solid lifter of some type to keep the plunger from being compressed? What is a good substitute for the Morel hydraulics?
YOu can use a solid roller and then measure the distance using a .312" check ball. Morel has there measurements posted on the site. Subtract the difference and you have your pushrod length.

Morel's have .141 to .143" worth of plunger travel.
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  #12  
Old Feb 28th, 13, 09:17 AM
67RS502 67RS502 is offline
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Default Re: Morel 4603 lifters BBC

now for a real hijack
Chris
you were doing some spintronon girly roller lifters testing
can you post some info on your R&D?
valve weight, spring pressure, rpm ...
or is it top secret stuff that I'll only get when you do my next cam (with a big heavy intake valve)?
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67 camaro
420 - 641hp HRcam 1.39, 9.79 @ 137.5
502 - 626hp 252/263HRcam 1.44, 10.08 @ 132.7
62 Nova
383/200-4R/12-bolt w 373s
224/224 HR cam
1.57 10.97 @ 121.2


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  #13  
Old Feb 28th, 13, 09:37 AM
DT DT is offline
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Donny
 
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Default Re: Morel 4603 lifters BBC

Quote:
Originally Posted by 67RS502 View Post
now for a real hijack
Chris
you were doing some spintronon girly roller lifters testing
can you post some info on your R&D?
valve weight, spring pressure, rpm ...
or is it top secret stuff that I'll only get when you do my next cam (with a big heavy intake valve)?
Time to grow up I think.
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  #14  
Old Feb 28th, 13, 10:04 AM
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Default Re: Morel 4603 lifters BBC

Some of the best threads are the ones that get hijacked. Good stuff...
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  #15  
Old Feb 28th, 13, 10:08 AM
67RS502 67RS502 is offline
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Default Re: Morel 4603 lifters BBC

well it is a hijack from the original post... hope the op doesnt mind
but a serious question about the spintron testing, a good technical subject, dont you think?
and I'm just givin Chris a hard time about my next engine project, which he will be doing the valvetrain on... need to throw more of these guys in next time so you guys dont take me so serious.
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67 camaro
420 - 641hp HRcam 1.39, 9.79 @ 137.5
502 - 626hp 252/263HRcam 1.44, 10.08 @ 132.7
62 Nova
383/200-4R/12-bolt w 373s
224/224 HR cam
1.57 10.97 @ 121.2


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