I am assembling my head after a skim and valve job.
I started with an installed h of 1 5/8" ,the previous setting.The 3 spring exhaust had a opening pressure about 75lbs.I was thinking about 95 lbs would be good.Adding even .060 shim didnt change much and it looks like I dont get up to 95/100 until valve is more than 1/2 way open.
So the question is does anyone have any experience with the original or moss triple spring set or other suppliers.Im not sure if I can run the tr4 2 spring set and new retainers with my 3/8 stems.
I really dont get the 3 springs on such a small relatively low rpm valve.
I did run this head previous with these springs and no problem other than grooved ex.valve faces after 20k miles,so maybe im overthinking this.
Thanks
Tom
I started with an installed h of 1 5/8" ,the previous setting.The 3 spring exhaust had a opening pressure about 75lbs.I was thinking about 95 lbs would be good.Adding even .060 shim didnt change much and it looks like I dont get up to 95/100 until valve is more than 1/2 way open.
So the question is does anyone have any experience with the original or moss triple spring set or other suppliers.Im not sure if I can run the tr4 2 spring set and new retainers with my 3/8 stems.
I really dont get the 3 springs on such a small relatively low rpm valve.
I did run this head previous with these springs and no problem other than grooved ex.valve faces after 20k miles,so maybe im overthinking this.
Thanks
Tom