Setting the Distributor
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Setting the Distributor
Here's what I was going to do...
Since I have the intake off, and the timing cover off, I was going to install the intake, line up the timing marks on the sprockets, and set the distributor to cyl 1 at that point.
Anyone have a problem with that? That should work, right?
Thanks.
Since I have the intake off, and the timing cover off, I was going to install the intake, line up the timing marks on the sprockets, and set the distributor to cyl 1 at that point.
Anyone have a problem with that? That should work, right?
Thanks.
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
Here's what I was going to do...
Since I have the intake off, and the timing cover off, I was going to install the intake, line up the timing marks on the sprockets, and set the distributor to cyl 1 at that point.
Anyone have a problem with that? That should work, right?
Thanks.
Since I have the intake off, and the timing cover off, I was going to install the intake, line up the timing marks on the sprockets, and set the distributor to cyl 1 at that point.
Anyone have a problem with that? That should work, right?
Thanks.
That should work, but before you do so make sure the #1 piston is TDC.
Thread Starter
Team Owner
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Question. With the heads off, and the timing marks aligned, the #1 cyl is at TDC. I guess that is power stroke, not compression?
Team Owner
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
With the heads off, you will have to look at the position of the lifters for cylinder #1. With the timing mark at 0 and the piston at TDC, the cam lobes for #1 will have to be down (both lifters should be at the same height and low in their bores).
If you turn the crank 1 full turn again, the piston will be back at TDC again but the exhaust valve will be open. If the lifters are at different heights, you are 180 degrees out.
If you turn the crank 1 full turn again, the piston will be back at TDC again but the exhaust valve will be open. If the lifters are at different heights, you are 180 degrees out.
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
With the heads off, you will have to look at the position of the lifters for cylinder #1. With the timing mark at 0 and the piston at TDC, the cam lobes for #1 will have to be down (both lifters should be at the same height and low in their bores).
If you turn the crank 1 full turn again, the piston will be back at TDC again but the exhaust valve will be open. If the lifters are at different heights, you are 180 degrees out.
If you turn the crank 1 full turn again, the piston will be back at TDC again but the exhaust valve will be open. If the lifters are at different heights, you are 180 degrees out.
I believe it is impossible to install the cam 180* out as long as the timing marks are lined up.
You can set the cam gear to either 12:00 or 6:00. 6:00 is a bit easier since the points are closer and easier to line up.
My reasoning is that the crank is doing a 720 degree cycle, while the cam is doing a 360* cycle. Therefore, the pistons are all in the same exact position twice during the cam cycle. Therefore, impossible to be 180* out. The CAM sets what the stroke turns out to be, not the crank.
Think of it this way, if the marks are at 12:00 crank and 6:00 cam, and the crank cycle is twice the cam cycle, I can move the cam gear to 12:00 (180*) and the crank will be exactly where it was when the cam was at 6:00. Why? Moving 1/2 a cycle moves the crank 360* so the pistons were in the same exactly spot, although the cam only moved 180*.
Make sense? Or am I full of shet?
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Thread Starter
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Melting Slicks
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From: St. Charles, MO Route 66 Corvette Club
If you have the valve cover off the heads, you can observe the valves on #1 and #6 cylinders as the timing mark approaches TDC. If you are approaching TDC for #1 cylinder, the valves on #1 will not move AND the valves will "rock" on #6 cylinder. If the valves are opposite what is stated, you are approaching TDC on #6 cylinder. FYI
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From: The Top of Utah
Originally Posted by jsup
Cool. I just learned that doing some research.
Originally Posted by jsup
Question. With the heads off, and the timing marks aligned, the #1 cyl is at TDC. I guess that is power stroke, not compression?
What is the difference between TDC at the compression stroke and TDC at the power stroke?
RACE ON!!!
