This may be an obvious question, but here goes.... I just purchased CTR cams and wanted to upgrade the valve springs when I get the cams installed. I was looking at the link http://www.lightningmotorsport...a.htm. Am I correct in assuming that I need 4 exhaust inner, 4 exhaust outer, 4 intake inner and 4 intake outer springs?

Also, has anyone else with this upgrade also installed new lost motion assemblies? Ive done some research on the internet and found mixed suggestions. Thanks

 

You need (8) of each type. IN/EX and inner/outer of each.

The engine has 16 valves, and eaach valve uses an inner and outer spring. 16x2 = 32.

8 IN (inner & outer)
8 EX (inner & outer)

You won't need to upgrade the LMA's as long as you've already got B18C LMA's.

Forgot to mention that you'll reuse the GS-R IN (inner/outer) springs on the EX side, so you only need to buy the P73 IN (inner/outer) valve springs.