Your pre-load may not be your buddies. . .
Thread Starter
Joined: Oct 2003
Posts: 1,386
Likes: 39
From: Tri-Cities, TN
Your pre-load may not be your buddies. . . 1/4" turn, 1/2", 3/4" turn all depends on what thread size you are using to adjust with to set lifter pre-load. Don't assume since you have read or your buddy "says" that what your doing is right. Calculate the pre-load by using the thread size.
For instance:
3/8's x 24 thread. You think you need a 1/2" turn
1.00" / 1/2turn = .500" / 24 thread = .020" pre-load Not enough
Lets try 1 full turn
1.00" x 1 turn = 1.00 /24 thread = .040" Good.
Now lets try a 3/8" x 16 Coarse with a 1/2 turn
1.00" x 1/2" turn = .500 / 16 thread = .031" You are on the low side of good.
This may help it may not but I just want people aware that your 1/4" turn may be ok for your engine but for your buddy it may not be.
Chris
For instance:
3/8's x 24 thread. You think you need a 1/2" turn
1.00" / 1/2turn = .500" / 24 thread = .020" pre-load Not enough
Lets try 1 full turn
1.00" x 1 turn = 1.00 /24 thread = .040" Good.
Now lets try a 3/8" x 16 Coarse with a 1/2 turn
1.00" x 1/2" turn = .500 / 16 thread = .031" You are on the low side of good.
This may help it may not but I just want people aware that your 1/4" turn may be ok for your engine but for your buddy it may not be.
Chris
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by mike c.
all i ever did was tq-them to 22lbs and leave them. i've never checked preload,nor have i ever had a problem in years.
Thread Starter
Joined: Oct 2003
Posts: 1,386
Likes: 39
From: Tri-Cities, TN
Originally Posted by Unaffiliated Racing
What if I need .030" lash before zero preload?...lol...j/k
everyone besides chris please ignore my post.
everyone besides chris please ignore my post.
I would use shim stock
Go grind some cams!!!!Chris
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Thread Starter
Joined: Oct 2003
Posts: 1,386
Likes: 39
From: Tri-Cities, TN
Originally Posted by Unaffiliated Racing
Only if you go make some oil pans! lol and send me an ummm..."test piece" lol...one for a 92 LS-1 S-10
Chris
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Thread Starter
Joined: Oct 2003
Posts: 1,386
Likes: 39
From: Tri-Cities, TN
Originally Posted by MUSTANGEATER
Chris
So what's the proper Lifter Pre Load on a set of Morel lifters?
Floyd.
So what's the proper Lifter Pre Load on a set of Morel lifters?
Floyd.
Rick, the engineer at Morel, says you want at least .030".
Chris
We need a sticky for this thread. Excellent info and something the general crowd needs to know. Like said before it is consistant on stock rockers but aftermarket adjustables will not be constant.