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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Without the intake valve opening and filling the cylinder, there's going to very little to compress. The engine can blow air in and out of the spark plug hole, but that's it...
OK lets try this again, how do you tell what cycle is the compression cycle by just using your finger over the sparkplug hole and the push rods are NOT installed. Every up cycle is going to feel the same when the valves are not opening and closing.
The "compression" stroke (crankshaft) has a Fixed relationship to the camshaft position. If there are no pushrods installed you would use the lifter operation sequence / position to determine which "stroke" you're on
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True and that is the way to do it, several members were saying they just use there finger over the sparkplug hole to find the compression stroke. I am asking them how they fo that with no push rods installed. Can't seem to get a straight answer out of them.
Adjust the intake valve when the exhaust valve is just opening, and adjust the exhaust valve when the intake is almost closed. That is all you need to do. No soda straws, no hunting for TDC. Keep it simple.
Read this again, wonkey. If you use this method to adjust your valves you don't need to worry about finding TDC on a compression stroke, because the cam lobe will be in the correct position to adjust the respective pushrod. There's no reason to add difficulty to a simple job.
True and that is the way to do it, several members were saying they just use there finger over the sparkplug hole to find the compression stroke. I am asking them how they fo that with no push rods installed. Can't seem to get a straight answer out of them.
If you watch the intake lifter on the cylinder your adjusting while turning the engine, watch it come up, then when it goes all the way back down, the piston is on the way up on the compression stroke, turn engine a little more, the piston will be real close to TDC on the compression stroke.
Read this again, wonkey. If you use this method to adjust your valves you don't need to worry about finding TDC on a compression stroke, because the cam lobe will be in the correct position to adjust the respective pushrod. There's no reason to add difficulty to a simple job.
That is not what I was questioning, you are the one that needs to go back and read what I asked. I'm done with this, I don't want to be known as Rounders 2, you know making a thread about themselves.
If you watch the intake lifter on the cylinder your adjusting while turning the engine, watch it come up, then when it goes all the way back down, the piston is on the way up on the compression stroke, turn engine a little more, the piston will be real close to TDC on the compression stroke.
I give up, some of you have very little reading comprehension. Have a nice day.
So I have a question for those that are saying to find the compression stroke by sticking their finger over the sparkplug hole, with the push rods out wouldn't every stroke be a compression stroke? after all, all the valves are going to be closed all the time.
There's no answer to your question, That's why nobody answered it, not trying to be a ***** but it's impossible to do anything if you don't have any of the pushrods in place.. Anybody that says they're checking on the compression stroke with the push rods out are full of ****, all right? So get over it move on...
OK lets try this again, how do you tell what cycle is the compression cycle by just using your finger over the sparkplug hole and the push rods are NOT installed
You can`t do it simply by putting a finger on the spark plug hole, you must watch the lifters to determine when the cam is in the correct position.
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