you should never go over a full turn or you risk hanging the valves open, i have never had to go over half a turn on any hyd cam ! sounds like your not doing it right. i do the one valve open and one valve closed method and it works great ! how do you check to see if the pushrod to lifter is at zero lash and is there oil coming out the top at the rockers ?
I have a weird problem
Hello Fellas: I am having a weird valvetrain adjustment issue. Now, being a Ford guy , I have built a few engines in my career. I have however, never used a set of link bar hydraulic roller lifter until now.........the problem is. i am having trouble with noisy ticking that borders on clacking. Its in a 351 W that has aluminum heads.......I have tried the adjustment as per the instructions from Comp Cams. 1/8 turn past zero lash on the valve which is on the seat.......no dice. I went to 1/4 turn , then 1/2 , and I am at 1 1/2 turns in. Still makes noise albeit less noise. I have measure the thread lead for 1 full turn and it is aound .040'' . This means I have the plunger in around .060''-.065''. To me that seams plenty..........when it warms up still clacking. Have I gone too far? Is the Aluminum in the head expanding thatmuch at operating temp to lose all the lash? I know I'll get somewhere with your guys advice. Thanks in Advance.
1 - 3 of 3 Posts
you should never go over a full turn or you risk hanging the valves open, i have never had to go over half a turn on any hyd cam ! sounds like your not doing it right. i do the one valve open and one valve closed method and it works great ! how do you check to see if the pushrod to lifter is at zero lash and is there oil coming out the top at the rockers ?
Some link-bars will hit the lifter bosses of the Lightning 351 blocks when using a reduced base circle cam.In older 351 blocks the lifter bores may be worn enough to allow the lifter to bleed down.
1 - 3 of 3 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
460 Ford Forum
A forum community dedicated to Ford big block owners and enthusiasts. Come join the discussion about performance, modifications, horsepower, tuning, build specifications, and more!
Full Forum Listing
Top Contributors this Month
View All
The Mad Porter
54 Replies
the_partman
45 Replies
PSIG
23 Replies
