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Valve Spring Pressure

Can anyone tell me what is an acceptable range of tension/pressure in a valve spring for a W5 engine? Is it ever necessary or appropriate to use shims?
Thanks for any advice.

Do You own a car built by Durant? \'29 Durant 40 and \'27 Star R cabriolet

Re: Valve Spring Pressure


I don't believe there are any specs for sping compression at least I have not seen any. The only thing I have seen is that is that they should all be about the same.

You can set up a crude test with a drill press and bathroom scales. Set the drill press so you can compress the springs a set distance, maybe a half inch. Put each spring on the scales and compress each one the same distance and record the pounds required to compress this distance. You should be able to identify any weak springs.


Re: Valve Spring Pressure

Hi Bob:
That sounds like a good idea for testing pressure when you don't have the spring gauge.
Hope you are keeping well. We remember the good times in Omaha.
Keep that Star rolling.

Do You own a car built by Durant? Frontenac

Re: Valve Spring Pressure



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