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Generation IV Internal Engine
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what preload on morell tiebar lifters ?

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Old 07-14-2012, 03:40 AM   #1
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Default what preload on morell tiebar lifters ?

what preload is required on morrell street hyd tie bar lifters ?
are they a direct replacement for the LS7 lifters after you remove the LS buckets ?
will the existing 7.450 push rods be OK ?
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Old 07-14-2012, 07:39 AM   #2
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Should be anywhere from .60-.85. You should always measure for pushrod length. If you have an aftermarket cam or shaved heads you def need to check.
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Old 07-14-2012, 11:11 AM   #3
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I could be wrong but I thought the Morel's take less preload, around .030-.050.
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Old 07-14-2012, 05:14 PM   #4
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Quote:
Originally Posted by red 454 View Post
what preload is required on morrell street hyd tie bar lifters ?
are they a direct replacement for the LS7 lifters after you remove the LS buckets ?
will the existing 7.450 push rods be OK ?
http://www.eecis.udel.edu/~davis/z28...152_large.html

Is the instruction sheet I received with my lunati version of the morel street link bar lifters.. You should always measure your own pushrod length, but fwiw, my setup with the link bars needed a 7.350 length.
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Old 07-14-2012, 06:59 PM   #5
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yes i was going to mesure the push rods but i was just woundering about the lifter length and preload ? so is 30 or 50 thow ?

i am using the stock rockers with a trunion up grade so no adjustment .
on mast 11deg ls3 heads
IM now waiting FOR THE MAST ROCKERS STANDS THAT DIDENT COME WITH HEADS ?
(pissed off ) as it says in the mast catalog LS3 rocker gear fits the mast heads(thats bull **** the rocker bolt holes are WAY out


they sent me 8.100 length push rods i havent been able to try them yet as i have no rocker stands what do you think of this length is IT close or way of ?
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Last edited by red 454; 07-14-2012 at 07:29 PM..
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Old 07-14-2012, 07:27 PM   #6
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Quote:
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so is 30 or 50 thow ?
The sheet linked above says preload target is 0.045 - 0.050 for aluminum block and heads.
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Old 07-14-2012, 07:57 PM   #7
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thanks

this is interresting about morell ,lunatie, crow, etc made by
http://johncalliesinc.com/dealers.php
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Old 07-14-2012, 08:06 PM   #8
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.50 to .80 is what your looking for then check for your correct pushrod length.
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Old 07-16-2012, 03:14 AM   #9
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I run them at 20 - 40 never any more then 60.. on all customers cars have had negative results with more preload.
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Old 07-27-2012, 01:40 AM   #10
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Quote:
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I run them at 20 - 40 never any more then 60.. on all customers cars have had negative results with more preload.
CAN YOU elabarate on negative
please
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Old 07-27-2012, 09:04 AM   #11
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I run mine with 5/8 turn from zero lash. They are quite and revs 7500 no problem

Tim
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Old 07-27-2012, 03:29 PM   #12
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i have mine at .065 and that is what Kurt Urban advised me to run them at.I trust him.
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Old 07-27-2012, 08:37 PM   #13
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The cup in the Morels sits about .050 higher than stockers. Your PR's will be too long. Measure and get the right length.
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bar, checking, hyd, length, lifter, lifters, ls, ls1, ls3, lunati, morel, preload, pushrod, roller, tiebar, tye


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