Mechanics

CHEVY MINIMUM VALVE SPRING

1993 Chevrolet Silverado

Engine problem
1993 Chevy Silverado V8 Four Wheel Drive Automatic 140000 miles

dear sirs
how do I find the minimum valve spring pressure thats acceptable
with the recommended spring tension of 200 pounds
please help im stuck thanks jim
Avatar
1street1
December 21, 2007.



This question has many answers. First I need to know what you are doing to the engine. Are you rebuilding it? Are you rebuilding the heads? Are these stock valve springs? Is it a stock cam?
Normaly, if there is any question about the strength or integrity of a valve spring, you should replace the whole set.

Tiny
Pear69
Dec 21, 2007.
If a manufacturers recomended spring tension is 200 pounds how do I determan what the minimum pressure would be acceptable for the spring

Tiny
1street1
Dec 21, 2007.
Is it a steel head or aluminum head? Are the valve seats stock? Are the valves steel or titanium? What is the compression ratio? Are you using stock rocker arms? What is the valve duration of the cam?
What I'm trying to get at is this, there is not an exact answer to your question until you tell me what you are doing to the engine. In order to find the minimum acceptable pressure for the spring you must consider what you are asking the spring to do; and are the parts that support the spring--like the retainer -- the keeper -- the head material etc, capable to do the job. There is no reliable answer to your question until all the questions above are answered.

Tiny
Pear69
Dec 21, 2007.