2High4U
1/2 ton status
I left my book at home and im at my shop. could someone post up the procedure for adjusting valves\rockers for me that would be awsome thanks.
CK5
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Valve Adjustments
- Thread starter 2High4U
- Start date
Try googling for the info. Or you can take the motor to TDC, adjust both #1 cylinder valves, turn the crank 1/4 turn, adjust the valves on #8, and so on through the firing order (this technique is a little slower: it only needs to be used on cams with lots of overlap but is technically a better way to do it).
gmtech954
Registered Member
if you do it the above way verify each cyl. is on its comp stroke and not exhaust. then tighten until there is no up and down movement in the pushrod and then tighten an additional 3/4 turn.
gmtech954 said:
That would imply TDC
(though I guess some people might screw that up).gmtech954
Registered Member
no it would not imply tdc remember the exhaust stroke has piston at tdc too and the exhaust valve is open.
RustBuket
1/2 ton status
gmtech954 said:no it would not imply tdc remember the exhaust stroke has piston at tdc too and the exhaust valve is open.
Ooooooo, I sense hostility.... lol jj. But He is right.
DEMON44
Low-Tech Redneck
Fur sure. A 4 stroke engine has 2 TDC's for every piston per every cycle. Verify TDC compression stroke.
gmtech954 said:no it would not imply tdc remember the exhaust stroke has piston at tdc too and the exhaust valve is open.
AFAIK TDC is defined as where the piston is at the top of its stroke on the compression cycle. I realize it is at the top of its stroke twice, but when it is at the top of its stroke during the exhaust cycle it is not at TDC.
gmtech954
Registered Member
how do you figure its not at tdc on the exhaust stroke last i checked the rod doesnt shrink on the exhaust stroke. im not trying to be hostile so please dont take it as such.
theperfectgarage
1/2 ton status
Because the real TDC is on the fireing or power stroke. Allow me to edit myself, More correctly, the compression stroke.gmtech954 said:
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gmtech954
Registered Member
hate to tell you but your wrong. top dead center is exactly what it says which means that the piston is as high in the bore as it can get, not that its at this position and on the comp stroke. like i said the rod length doesnt shrink and i dont think the cranks stroke does either.
theperfectgarage
1/2 ton status
Agree compleatly with your physical logic, but without recognizing the " one " tdc how would we set our cam phasing and valve timing?gmtech954 said:
does the engine run? me and my dad always set the valves with the motor running. you just tighten them down until they quit rattling, then loosen them till they rattle again and tighten them back down till they quit and go another 1/2-3/4 turn.
theperfectgarage
1/2 ton status
Way to ruin our fun, we could debate all day.big dan said:
didnt mean toogmtech954
Registered Member
yeah that debate could have went on for days but im still right...........lol
but im still right...........lol
theperfectgarage
1/2 ton status
LOL,
DEMON44
Low-Tech Redneck
........I see the great debate subsides.
I understand the implication of TDC when refering to a valve setting function. But I'm sure it was clairified because someone that might not know anybetter would see the piston at top dead center and think it's all good. While it's really 360* out.
I understand the implication of TDC when refering to a valve setting function. But I'm sure it was clairified because someone that might not know anybetter would see the piston at top dead center and think it's all good. While it's really 360* out.
