Adjusting Lifters
Thread Starter
"Rodstoration &am p;quot; In Progres
Joined: Jun 2004
Posts: 1,397
Likes: 1
From: Frisco TX
Adjusting Lifters
Can I get some advice on if I should adjust my lifters...and if so... what is a good process for doing this....
I've had a lifter that has always been a little loud...and the others aren't really all that quite. Was told by the engine shop that this is partially due to the aggressive cam grind (XE274 Roller).
Thanks in advance...If I can quite them down and it would be good for the engine then I would like to take care of this.
Ed
I've had a lifter that has always been a little loud...and the others aren't really all that quite. Was told by the engine shop that this is partially due to the aggressive cam grind (XE274 Roller).
Thanks in advance...If I can quite them down and it would be good for the engine then I would like to take care of this.
Ed
Racer
Joined: Feb 2007
Posts: 342
Likes: 0
From: Onley VA
If one is especially noisy, I would check it to make sure its OK, as well as the rest of that valves parts, the rocker could be bad, excessive wear on the valve tip, ect. ect. As long as every thing seems ok, adjusting is easy. For hydraulic lifters first put the valve you are adjusting on the base circle of the cam, start to tighten the rocker nut while gently spining the pushrod in you fingers. When you can't spin the pushrod any more, tighten another quarter turn and thats it. If you're using poly locks, lock it down. For solid lifters its the same except put the proper feeler gauge between the rocker and valve tip and DO NOT go the extra quarter turn. Make sure you have the right lash number, they vary for cold, hot, intake, exhaust.
Thread Starter
&amp;quot;Rodstoration &am p;quot; In Progres
Joined: Jun 2004
Posts: 1,397
Likes: 1
From: Frisco TX
If one is especially noisy, I would check it to make sure its OK, as well as the rest of that valves parts, the rocker could be bad, excessive wear on the valve tip, ect. ect. As long as every thing seems ok, adjusting is easy. For hydraulic lifters first put the valve you are adjusting on the base circle of the cam, start to tighten the rocker nut while gently spining the pushrod in you fingers. When you can't spin the pushrod any more, tighten another quarter turn and thats it. If you're using poly locks, lock it down. For solid lifters its the same except put the proper feeler gauge between the rocker and valve tip and DO NOT go the extra quarter turn. Make sure you have the right lash number, they vary for cold, hot, intake, exhaust.
Thanks... they are hydraulic... question...how do I know when I'm on the "base circle"?
Racer
Joined: Feb 2007
Posts: 342
Likes: 0
From: Onley VA
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Both Crane and Comp Cams have a good procedure for adj hyd lifters on thier w/s and it would be a wast of time to type it here. U can also adj lifters with eng running and i prefer this method.
I have a cut open vlv cover just for this that keeps the oil off the exh pipes.
Just make sure u can identify what "zero lash" feels like - u can still roll the p-rod with your fingers before u add that 1/4 to 1/2 turn tight.
As far as the tick noise beaware that it could be a wiped lobe though rollers are much less likely to wipe. Possibly a bad lifter. Try Marvel Mystery Oil? It can work/help to flush out crud from a lifter. Also try a stethiscope to locate the noise source.
that this is partially due to the aggressive cam grind (XE274 Roller)
Adj hyd lifters is pretty basic auto mechanics and thier reason for existance is they are quite. Now they do need a little warm-up time but once the eng is at normal temp and lifters are pumped up then lifter noise means vlv train problems.
cardo0
I have a cut open vlv cover just for this that keeps the oil off the exh pipes. Just make sure u can identify what "zero lash" feels like - u can still roll the p-rod with your fingers before u add that 1/4 to 1/2 turn tight.As far as the tick noise beaware that it could be a wiped lobe though rollers are much less likely to wipe. Possibly a bad lifter. Try Marvel Mystery Oil? It can work/help to flush out crud from a lifter. Also try a stethiscope to locate the noise source.
that this is partially due to the aggressive cam grind (XE274 Roller) Adj hyd lifters is pretty basic auto mechanics and thier reason for existance is they are quite. Now they do need a little warm-up time but once the eng is at normal temp and lifters are pumped up then lifter noise means vlv train problems.cardo0
