Valve lash settings 28

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rrausch

Registered: 05/02/06
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#181173 - 08/19/10 11:17 AM Valve lash settings 28
Bob_Kerr Registered: 02/05/08 Posts: 784 Loc: Hymera, IN	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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#181200 - 08/19/10 04:33 PM Re: Valve lash settings 28 [Re: Bob_Kerr]
Sky1928 Shade Tree Mechanic Registered: 07/09/06 Posts: 119 Loc: Michigan	Bob, You were correct to use the book settings. Paul _________________________ "Bringing back the past, my own little way."
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#181320 - 08/21/10 09:06 AM Re: Valve lash settings 28 [Re: Sky1928]
shawng Oil Can Mechanic Registered: 02/25/09 Posts: 596 Loc: Ottawa, Canada	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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#181321 - 08/21/10 09:19 AM Re: Valve lash settings 28 [Re: shawng]
Bob_Kerr Registered: 02/05/08 Posts: 784 Loc: Hymera, IN	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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