lifter install question?
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From: Dillon, Colorado
lifter install question?
I am installing new lifters in my 390. In my Haynes book it describes how to adj. the valves afterwards, only having to rotate the engine once. My question is which valves are the intake and which are the exhaust? Also what should the final lash measurement be? And finally are there any hints or tips I should know? Thanks for your time, I've received a lot of good info from this site...
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Joined: Jul 2003
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From: Colville, Washington
Hmmmm. I see I inadvertantly created a frowny!!
If you are using a stock cam and valvetrain and no milling has been done to the heads or block, you do not need to adjust the valves. There is no adjustment on the stockers.
If you have adjustable rockers here is one method:
Set engine on TDC #1 on compression stroke, "bleed" the lifters of oil(apply pressure to force the oil out of the lifter), there should be .110" to .210" clearance at the valve stem(lifter held down). Follow the firing order and perform the procedure on each cylinder.
If you are using a stock cam and valvetrain and no milling has been done to the heads or block, you do not need to adjust the valves. There is no adjustment on the stockers.
If you have adjustable rockers here is one method:
Set engine on TDC #1 on compression stroke, "bleed" the lifters of oil(apply pressure to force the oil out of the lifter), there should be .110" to .210" clearance at the valve stem(lifter held down). Follow the firing order and perform the procedure on each cylinder.
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From: Southwest Montana
This works on any even # cylinder engine made in the world.
Take the firing order, in this case the FE Ford....1 5 4 2 6 3 7 8 ....and write it down listing the last half of the order directly below the first half like this.
1 5 4 2
6 3 7 8
This forms up the pairs of companion cylinders. When the engine is rotating there is only one spot that both valves are moving at the same time. That is called valve overlap and is roughly centered at TDC exhaust stroke. When any cylider is in overlap it's companion cylder is at TDC Compression and can have it's valves adjusted in this position. For instance it you watch #5 till overlap happens then you can adjust #3. Watch #4 and adjust #7 and so forth. With this method any engine with an even # of cylinders can be adjusted in two revolutions and rechecked in another two. Also no need to memorize the adjustment "code" that mfg tend to put in their books.
I guess that my $0.02 worth
Ken
Take the firing order, in this case the FE Ford....1 5 4 2 6 3 7 8 ....and write it down listing the last half of the order directly below the first half like this.
1 5 4 2
6 3 7 8
This forms up the pairs of companion cylinders. When the engine is rotating there is only one spot that both valves are moving at the same time. That is called valve overlap and is roughly centered at TDC exhaust stroke. When any cylider is in overlap it's companion cylder is at TDC Compression and can have it's valves adjusted in this position. For instance it you watch #5 till overlap happens then you can adjust #3. Watch #4 and adjust #7 and so forth. With this method any engine with an even # of cylinders can be adjusted in two revolutions and rechecked in another two. Also no need to memorize the adjustment "code" that mfg tend to put in their books.
I guess that my $0.02 worth
Ken
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Originally Posted by chump
it is a stock hydraulic lifter set up.
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