Brian Crower springs and retainers VS. GSC Beehive Springs
Jun 8, 2011, 01:28 PM
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Brian Crower springs and retainers VS. GSC Beehive Springs
Hey guys I just bought some GSC S2 cams for my VIII and I was looking for some insight on what valve train to run with them. I am stuck between the GSC beehive springs on oem retainers or Brian Crower single spring with retainers (BC0100). They run about the same price new.
Here are the specs:
Brian Crower-Spring Pressure: BC1100 Seat: 1.550" @ 95 lbs / Open: 1.000" @ 235 lbs / Coil Bind: 0.935" (no machine work required)
GSC Springs-Seat @ 1.56"=68 lbs / .300"=160lbs / .400"=190lbs / .450"=210lbs / .625"= Coil bind
Any help is much appreciated and thanks for your guys time in advance
Here are the specs:
Brian Crower-Spring Pressure: BC1100 Seat: 1.550" @ 95 lbs / Open: 1.000" @ 235 lbs / Coil Bind: 0.935" (no machine work required)
GSC Springs-Seat @ 1.56"=68 lbs / .300"=160lbs / .400"=190lbs / .450"=210lbs / .625"= Coil bind
Any help is much appreciated and thanks for your guys time in advance
Last edited by Rex915; Jun 10, 2011 at 11:31 AM.
Jun 8, 2011, 04:44 PM
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If you want to run flat throttle shifting, you will need a higher than stock seat pressure.
Stock seat pressure with GSC springs and stock retainers/seats is 68lbs.
I could not run Flat throttle shifting on that setup because the burn in the exhaust manifold (from retarded ignition) caused the exhaust valves to push open.
I've had to change to the GSC retainers and Seats, which puts seat pressure to 100lbs when closed. This will stop the valves opening when they aren't supposed to.
Hope that helps
Stock seat pressure with GSC springs and stock retainers/seats is 68lbs.
I could not run Flat throttle shifting on that setup because the burn in the exhaust manifold (from retarded ignition) caused the exhaust valves to push open.
I've had to change to the GSC retainers and Seats, which puts seat pressure to 100lbs when closed. This will stop the valves opening when they aren't supposed to.
Hope that helps
Jun 8, 2011, 05:14 PM
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If you want to run flat throttle shifting, you will need a higher than stock seat pressure.
Stock seat pressure with GSC springs and stock retainers/seats is 68lbs.
I could not run Flat throttle shifting on that setup because the burn in the exhaust manifold (from retarded ignition) caused the exhaust valves to push open.
I've had to change to the GSC retainers and Seats, which puts seat pressure to 100lbs when closed. This will stop the valves opening when they aren't supposed to.
Hope that helps
Stock seat pressure with GSC springs and stock retainers/seats is 68lbs.
I could not run Flat throttle shifting on that setup because the burn in the exhaust manifold (from retarded ignition) caused the exhaust valves to push open.
I've had to change to the GSC retainers and Seats, which puts seat pressure to 100lbs when closed. This will stop the valves opening when they aren't supposed to.
Hope that helps
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Jun 9, 2011, 07:16 AM
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BC's quality seems to be hit or miss. not just here. In the Honda world it was the same thing. People don't like BC's.
I know their cams when compared to others aren't giving the same numbers.
I know their cams when compared to others aren't giving the same numbers.