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Joined: Feb 2008
Posts: 802
ChatMaster - 750
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OP
ChatMaster - 750
Joined: Feb 2008
Posts: 802 |
I just adjusted the valves on the 28 Coach yesterday and the book said .006 on intake and .008 on exhaust. The 28 Chevy engineering specs say .013. Would that be the assembly plant cold settings? I set them to book specs and even though it ran very nice before, it now runs even better to a point I don't think it could be improved anymore. I set them while running the first time and then set them again by turning the engine with the crank handle and rechecked them 3 times. Nailed it!
28 Chevy LO Capitol 1 ton, 28 National 2 dr coach, 71 Chevy Custom Camper 3/4 ton. Also 23 Oldsmobile Economy truck and a 24 Olds sport touring.
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Joined: Jul 2006
Posts: 132
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Jul 2006
Posts: 132 |
Bob,
You were correct to use the book settings.
Paul
"Bringing back the past, my own little way."
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Joined: Feb 2009
Posts: 597
Oil Can Mechanic
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Oil Can Mechanic
Joined: Feb 2009
Posts: 597 |
They are supposed to be set hot, correct?
It's not how fast you can go, but how good you look at 20 MPH.
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Joined: Feb 2008
Posts: 802
ChatMaster - 750
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OP
ChatMaster - 750
Joined: Feb 2008
Posts: 802 |
Yes! I would run it down the road for at least a half hour before adjusting just to be sure the temp is evened out where it would be during normal driving and also keep the valve cover on as much as possible if you have to stop and get a tool or answer the phone or the like to keep the heat in. I also noticed some crud under the rocker arm and valve stem area which I cleaned off before adjusting. She really purrs now!
28 Chevy LO Capitol 1 ton, 28 National 2 dr coach, 71 Chevy Custom Camper 3/4 ton. Also 23 Oldsmobile Economy truck and a 24 Olds sport touring.
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