HD Valve springs or stock?

THINGONER · Posted: Tue Mar 05, 2013 7:01 pm Post subject: HD Valve springs or stock?

Trying to determine whether these are HD valve springs or stock-can anyone identify?

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SRP1 · Samba Member Joined: January 06, 2007 Posts: 4340

Need a better pic, but I'm guessing stock due to the use of the stock retainer.
Can you take a pic with the rocker shaft removed? A side shot is best.
Tell tale sign on stock springs is two of the coils are closer together than the rest. The closer coils are supposed to be seated toward the head, but sometimes get installed the other way by less experienced builders.
Also many stock springs will have a paint mark on them, could be yellow, blue, white, pink, red, etc.

THINGONER · Posted: Tue Mar 05, 2013 7:29 pm Post subject:

Cool thanks I have a couple more pics in my gallery but was having trouble posting those.

mark tucker · Posted: Tue Mar 05, 2013 8:42 pm Post subject:

mofoco used stock type retainers, need to check them to see what the pressure is,eyebaling dont do squat.

THINGONER · Posted: Tue Mar 05, 2013 9:08 pm Post subject:

Ok thanks! I take it I need to pull them off the head to do that?

[email protected] · Posted: Wed Mar 06, 2013 9:59 am Post subject:

They are most likely stock springs which will have 60-70lbs of pressure at 1.5 inches. New stock springs have 90lbs of pressure at 1.5 inches. HD new springs have 120lbs of pressure at 1.5 inches.
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Cylinder Head Reference Sheet


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