white2001s10

iTrader: (4)

First has anyone (themselves) pressure tested Comp 918 springs?
If so what pressure did you get at a 1.8" installed height? And what installed height are you running with them to give you what seat pressure?



Secondary question: Does anyone know the stock LS6 intake valve weight? and the stock LS6 spring pressure on the seat & installed height?


I'm looking for actual numbers measured here, not trying to figure out how to do something okay. I'm just trying to verify info against what others have measured.

For those that have any input on this, Thank You!

SNW Vette

Hi,
02 LS6 valves & springs measured data:
intake 76 grams, exhaust 63 grams
Valve springs, 90/95 lbs seat @1.800 with 345/360 lbs/inch rate
Chevy manual gives 90@1.8 & 375

LS1 valves
Intake: 99 grams, Exhaust: 86 grams

Stock LS1/6 retainer 11.2 grams, Comp Ti 7.2 grams

28.36 grams/ounce

Good luck,
Steve

white2001s10

iTrader: (4)

Thank you! That's very helpful.
Anyone else test the 918 springs?

white2001s10

iTrader: (4)

ttttt

LASTLS1

iTrader: (7)

Give me the the installed seat height and the compressed height and I'll give you the pressures.

white2001s10

iTrader: (4)

Comp puts the numbers on the side of the box and I can see those, but if you've got a spring handy and a pressure tester, here you go.

1.8" seat

1.23" compressed.

thanks!

TA2SLOW346

iTrader: (3)

ttttt