Rocker shims + pushrod problem
#1
TECH Enthusiast
Thread Starter
iTrader: (20)
Join Date: Apr 2003
Location: texas
Posts: 658
Likes: 0
Received 0 Likes
on
0 Posts
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
#5
#6
TECH Enthusiast
Thread Starter
iTrader: (20)
Join Date: Apr 2003
Location: texas
Posts: 658
Likes: 0
Received 0 Likes
on
0 Posts
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
#8
TECH Junkie
iTrader: (18)
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
#13
TECH Fanatic
iTrader: (35)
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.
#14
TECH Senior Member
iTrader: (4)
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.
#18
TECH Enthusiast
Thread Starter
iTrader: (20)
Join Date: Apr 2003
Location: texas
Posts: 658
Likes: 0
Received 0 Likes
on
0 Posts
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