coil bind/valve shims
#1
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I now have the trex cam and patriot gold springs. Install height is 1.800, spring coil bind is 1.090. Lift on my cam is .618 and .613
1.800 1.800
-0.613 -0.618
-------- --------
1.187 1.182
-1.090 -1.090
-------- --------
.097 .092
-.050 -.050
------- --------
.047 intake .042 exhaust
So this means that I need .047 shims for my intake valves and .042 shims for my exhaust valves. If this not correct please correct me.
Where can I get this amount of shims?
1.800 1.800
-0.613 -0.618
-------- --------
1.187 1.182
-1.090 -1.090
-------- --------
.097 .092
-.050 -.050
------- --------
.047 intake .042 exhaust
So this means that I need .047 shims for my intake valves and .042 shims for my exhaust valves. If this not correct please correct me.
Where can I get this amount of shims?
#3
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Originally Posted by 01350ss
I now have the trex cam and patriot gold springs. Install height is 1.800, spring coil bind is 1.090. Lift on my cam is .618 and .613
1.800 1.800
-0.613 -0.618
-------- --------
1.187 1.182
-1.090 -1.090
-------- --------
.097 .092
-.050 -.050
------- --------
.047 intake .042 exhaust
So this means that I need .047 shims for my intake valves and .042 shims for my exhaust valves. If this not correct please correct me.
Where can I get this amount of shims?
1.800 1.800
-0.613 -0.618
-------- --------
1.187 1.182
-1.090 -1.090
-------- --------
.097 .092
-.050 -.050
------- --------
.047 intake .042 exhaust
So this means that I need .047 shims for my intake valves and .042 shims for my exhaust valves. If this not correct please correct me.
Where can I get this amount of shims?
If all you are doing is installing a set of springs, I would just check that the installed height is 1.8" or within +-.010" of that. That should give you around the advertised seat pressure of 135lbs. Make sure you heat cycle them properly or the seat pressure could become inconsistent and lead to premature failure.
#4
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^ok, I will be measuring the springs, but if the springs are indeed 1.800 installed height, is my math correct to get the springs .050 from coil bind? If not than I'm a little lost.
#5
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At 1.800" you should have right 140 lbs. As we said earlier, we can provide you with hardened .015" shims. If you decide to go ahead and shim them, let us know and we can sell you the hardened shims you will need.