Rocker shims + pushrod problem
Rocker shims + pushrod problem I did some pushrod measuring and came out with 7.280" pushrod needed (this includes my 0.030 preload for my morel/lunati lifters).
However trend only makes them my 0.025 increments so I can order a 7.275 pushrod which only gives me 0.025 preload on my lifters.
As long as my stock rockers wipe fine, can I just order 0.005" shims for my rocker arm pedestal to so I get the correct preload assuming my wipe pattern is good? Because this would get me my 0.30 preload i want.
thanks in advance
However trend only makes them my 0.025 increments so I can order a 7.275 pushrod which only gives me 0.025 preload on my lifters.
As long as my stock rockers wipe fine, can I just order 0.005" shims for my rocker arm pedestal to so I get the correct preload assuming my wipe pattern is good? Because this would get me my 0.30 preload i want.
thanks in advance
TECH Addict
Joined: Sep 2009
Posts: 2,481
Likes: 5
From: PA/MD
if you found 0.020 ok, then me at 0.025 should be alright, i'm not spinning this thing that high lol. will still have to order from trend since most places won't do anything past 0.050 precision
Trending Topics
I did some pushrod measuring and came out with 7.280" pushrod needed (this includes my 0.030 preload for my morel/lunati lifters).
However trend only makes them my 0.025 increments so I can order a 7.275 pushrod which only gives me 0.025 preload on my lifters.
As long as my stock rockers wipe fine, can I just order 0.005" shims for my rocker arm pedestal to so I get the correct preload assuming my wipe pattern is good? Because this would get me my 0.30 preload i want.
thanks in advance
However trend only makes them my 0.025 increments so I can order a 7.275 pushrod which only gives me 0.025 preload on my lifters.
As long as my stock rockers wipe fine, can I just order 0.005" shims for my rocker arm pedestal to so I get the correct preload assuming my wipe pattern is good? Because this would get me my 0.30 preload i want.
thanks in advance
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo I'm probably just gonna order the 7.275s if mark has run a similar setup with good results
Also, I ran my Morels at 0.030" and now run them at 0.050" where they are much quieter.
Shimming .005" at the pivot means .005" x 1.7 = .0085" at the pushrod due to rocker ratio. But as was said your 7.275" pushrods are too short anyway so shimming is the wrong direction with those PRs. A 7.300" PR w/ .010" shim would be the same as a 7.283" PR but again the wipe may not be correct.
Shimming .005" at the pivot means .005" x 1.7 = .0085" at the pushrod due to rocker ratio. But as was said your 7.275" pushrods are too short anyway so shimming is the wrong direction with those PRs. A 7.300" PR w/ .010" shim would be the same as a 7.283" PR but again the wipe may not be correct.
. I know better than to simplify in one of your threads LOL. doesn't the block (iron/aluminum) make a difference too? that's what I was told when I got these a few years ago.
I haven't touched this motor in a while and haven't kept up to date on tech in the past few years so things change, so just checking