setting valve lash
#1
setting valve lash
I am trying to reassenble my 292 and having some trouble with the valve lash. This is my first time doing a valve adjustment on an engine with solid lifters and push rods (my motorcycle has a similar rocker arm set up but it is an OHC design) I am following the instructions from my 1959 ford truck shop manual, a reprint from C & G Early Ford parts which reads:
Set #1 at TDC on comp stroke then adjust
#1-Ex #1-In
#4-Ex #2-In
#5-Ex #7-In
Rotate crank 1/2 turn to bring #4 to TDC then adjust
#6-Ex #4-In
#8-Ex #5-In
Rotate crank 3/4 turn to bring #3 to TDC then adjust
#2-Ex #3-In
#3-Ex #6-In
#7-Ex #8-In
This is for the cold setting at .019
When I do it this way and get it done some of the push rods are so lose at points throughout the turn of the crank that they just fall down and are not in contact with the rocker arms. Actually its alll of them at some point.
Does this make since?
all my parts are still with the same cylinder from when it was torn down, nothing was mixed up, all push rods stright and same length. It just dont seem right to have the push rod get so loose that the little cupped end falls away from the rocker arm.
Set #1 at TDC on comp stroke then adjust
#1-Ex #1-In
#4-Ex #2-In
#5-Ex #7-In
Rotate crank 1/2 turn to bring #4 to TDC then adjust
#6-Ex #4-In
#8-Ex #5-In
Rotate crank 3/4 turn to bring #3 to TDC then adjust
#2-Ex #3-In
#3-Ex #6-In
#7-Ex #8-In
This is for the cold setting at .019
When I do it this way and get it done some of the push rods are so lose at points throughout the turn of the crank that they just fall down and are not in contact with the rocker arms. Actually its alll of them at some point.
Does this make since?
all my parts are still with the same cylinder from when it was torn down, nothing was mixed up, all push rods stright and same length. It just dont seem right to have the push rod get so loose that the little cupped end falls away from the rocker arm.
#2
Check to make certain #1 is on the compression stroke. #1 is passenger side front, by the way. Remove all spark plugs and have a helper hold their thumb on the #1 spark plug hole while you rotate the crankshaft clockwise. They should be able to feel pressure as the #1 piston begins its compression stroke. Stop at TDC and follow the instructions you already have.
#5
Problems with my 1955 Ford Truck
hey guys! i have tried to make a valve lash adjustment on my 1955 ford truck. The problem is that my rocker is still noisy for some reason. The truck manual says .16 on intake and .18 exhaust which is right but i have adjusted them at .19 both like shop manual says. Which one is right I can't figure it out. email me at my grandaughters email address Caleighhhx46@aim.com. Please help! Thank you.
#6
#7
It is very possible the rockers havent been replaced or reserviced for many thousands of miles. If that is the case, they WILL have wear pockets at their end from valve contact. You can adjust the valves perfectly by feeler gauge, and they still will be extra loose by the depth of the pockets. So while you are in there take one of the adjusters all the way out and run a finger on the contact surface, or use a dentist's mirror and take a look at the end of one, to get an idea of their condition. They all will be basically the same with regards to wear.
Any auto machine shop can resurface them for not much, especially if you dissassemble the rockers yourself.
Any auto machine shop can resurface them for not much, especially if you dissassemble the rockers yourself.
Trending Topics
#8
Thread
Thread Starter
Forum
Replies
Last Post
68murc
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
2
08-11-2015 05:15 PM
uncs77
1973 - 1979 F-100 & Larger F-Series Trucks
10
01-13-2015 07:54 PM
mark1986F150
Ford Inline Six, 200, 250, 4.9L / 300
11
12-14-2012 07:37 AM
gordo2
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
22
07-06-2011 11:47 AM
60 F100 4X4
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
7
10-28-2010 10:04 AM