Timing valves for 280 camshaft

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Wkuehnis
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Timing valves for 280 camshaft

Post by Wkuehnis » Fri Dec 08, 2023 1:49 am

Hi,
Can somebody please describe the timing of the valves for the 280 camshaft from Snyders ?
Thanks
Willi


Kerry
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Re: Timing valves for 280 camshaft

Post by Kerry » Fri Dec 08, 2023 2:06 am

Same as any timing of a cam, by the marks on the gears.


Topic author
Wkuehnis
Posts: 2
Joined: Fri Sep 29, 2023 2:23 am
First Name: Wilhelm
Last Name: Kuhnis
* REQUIRED* Type and Year of Model Ts owned: 1925 roadster
Location: Oberriet

Re: Timing valves for 280 camshaft

Post by Wkuehnis » Fri Dec 08, 2023 12:59 pm

Thanks, thats a funny answer.
Valve timing is the position, when the valves open and close.


tman1913
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Re: Timing valves for 280 camshaft

Post by tman1913 » Fri Dec 08, 2023 2:27 pm

If you are wanting to verify the opening and closings events google Degree cams by centerline. You cam should have a cam card with all the information you need.


Kerry
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Re: Timing valves for 280 camshaft

Post by Kerry » Fri Dec 08, 2023 2:54 pm

Funny answer? more like a funny question, who needs to verify the cam timing when they all correspond to the timing marks on the gears, I suppose you can check it with a degree wheel but what for? the cams are not made to a guess that they need checking let alone you can only move the timing by gear tooth increments :? now if you said you are trying to work out if you have a 7.5 degree advanced cam grind or gear, then the cam would be marked, or not hard to see if the gear is the 1/2 tooth 7.5 against an old gear. just don't use both.


Distagon2

Re: Timing valves for 280 camshaft

Post by Distagon2 » Fri Dec 08, 2023 3:28 pm

FWIW, Bill Stipe told me to set valve lash at 0.012" for all valves with his 280 camshaft. Is valve lash what you are really asking?


Dan McEachern
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Re: Timing valves for 280 camshaft

Post by Dan McEachern » Fri Dec 08, 2023 3:42 pm

Exh lobe centerline 109 deg btdc

Int lobe centerline 122 deg atdc

lobe separation 115.5 deg

There's a reason some engines seem to run better than others..................


Norman Kling
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Re: Timing valves for 280 camshaft

Post by Norman Kling » Fri Dec 08, 2023 4:17 pm

Valve timing as done in the old days was done to check the position of the piston when the valve opens. The idea was to have them the same so the engine would run smoothly. In those days the valve stems were ground for the clearance and with a worn camshaft the position of the valve opening could vary with wear. The new cams are ground precisely and with good timing gears, good bearings and new adjustable lifters, the valve lash can be measured the same for all valves and it will run smoothly as long as the timing marks on the gears line up.
Norm

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