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Author Topic: SBF Morel hydraulic roller preload  (Read 1734 times)
4 Banger
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« on: August 03, 2017, 09:52:10 pm »

427w, Morel 5323, street car, Ed's cam, max 6000 RPM.  I have lost all my information referencing the lifter preload.  I'm using 7/16-20 stud mount rockers.  What is the proper preload on these? 
juiced coupe
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Location: Pascagoula, MS
The land mass between New Orleans and Mobile

« Reply #1 on: August 04, 2017, 04:09:20 pm »


By this, they call for about 1/2 a turn.

I'm sure it would be fine, it just sounds like a lot to me. Personally, I typically do 1/8-1/4 turn and then "set" the setscrew of the polylock with an additional 1/8 turn of the nut and setscrew together.

Doing more with less, or something like that.

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
4 Banger
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« Reply #2 on: August 08, 2017, 01:41:56 pm »

Thank you.  The nut moves .050 per full revolution, but the pushrod end of the rocker arm moves more than the nut does due to rocker ratio.  1.6 rockers.  Using a little trig, came up with .080" preload per full turn of the nut.  1/2 of that is .040.  So I did about 1/4, tightened the jam nut and cinched the adjusting nut down a hair more, then did the other 15 the exact same way.  We shall see.  Dyno next Monday.
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