Brain check - valve adjustment |
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Brain check - valve adjustment |
ThePaintedMan |
Jun 4 2013, 05:18 PM
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#1
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
Okay, so I just need a logic/brain check here. I've been doing valve adjustments the Cap'ns way since I got the car, but Rich suggested I try a go/no go method to see if I can figure out what is causing my backfiring problem.
Basically, I need to get one valve open as far as possible, making sure that the OPPOSITE valve is as closed as possible. In this case, #1 exhaust and # 3 exhaust. So if I'm looking at #1 exhaust and it is open (the rocker has play in it) then the #3 exhaust should be closed solid, correct? Rich, sorry to post this for all to see, I'm just looking for an answer quickly so I can get this buttoned back up before it's dark. Thanks for your help! |
TheCabinetmaker |
Jun 4 2013, 05:44 PM
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#2
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I drive my car everyday Group: Members Posts: 8,301 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
No. If the rocker has play, it's closed. When the rocker moves toward the center of the engine, it's opening.
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ThePaintedMan |
Jun 4 2013, 06:50 PM
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#3
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
No. If the rocker has play, it's closed. When the rocker moves toward the center of the engine, it's opening. Shoot, I said that wrong. Yes, when the rocker is fully compressed and isn't moving back up in either direction the engine is turned, the valve is fully open. What is interesting, and as it appeared to me, is that when I was at TDC for the cylinder (#1 in this case), the opposite cylinder's valve did NOT appear to be fully open. Ie, if I kept turning the engine, there appeared to be more inward movement of the rocker, as if it was not at the peak point of the lobe. I don't understand how this is possible, and it's probable that I was just "seeing things" but it's what I think is happening. |
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