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Hamilton Valve Springs 103 (w/ Steel Retainers)

Quick Overview

Stock springs have 78-82lbs of pressure seat pressure on average at 1.380". If you are over 35psi (boost or drive pressure) and 3,800 rpm, stock springs do not fully control the Valvetrain. This allows a few negative things to happen. First, valve float, which can cause serious damage to the Valvetrain. Second, intake and exhaust valves can be blown open by boost and exhaust drive pressure which allows reversion. Reversion can hurt your power potential by allowing exhaust gasses to enter the cylinder on the intake stroke. Inert gasses in the exhaust, when re-introduced into the cylinder shield the fuel particles from oxygen in the cylinder. This does a few things that negatively affect power. It increases the time delay from start of injection to start of combustion, it decreases the maximum pressure and maximum temperature reached in the cylinder and it increases the total time needed to completely burn the available fuel. Correct valve spring pressure is a very important piece of power production.

If you are running over 4,500 rpm with a large cam, we suggest going with our 103 lb springs with dfferent heat treat and shot peen, for better longevity in extreme applications, as well as our light-weight 4130 or titanium retainers.

For comparison, our 103lb springs have 102-104lb seat pressure and 180lb nose pressure with the 188-220. By running anything other than our 103lb 24v springs with our cam, you nullify the warranty we offer. If you run a cam with more than .320" lobe lift and anything other than the 103lb spring you run the chance of experiencing coil bind before maximum valve

Availability: In stock

$399.00
OR

Details

Stock springs have 78-82lbs of pressure seat pressure on average at 1.380". If you are over 35psi (boost or drive pressure) and 3,800 rpm, stock springs do not fully control the Valvetrain. This allows a few negative things to happen. First, valve float, which can cause serious damage to the Valvetrain. Second, intake and exhaust valves can be blown open by boost and exhaust drive pressure which allows reversion. Reversion can hurt your power potential by allowing exhaust gasses to enter the cylinder on the intake stroke. Inert gasses in the exhaust, when re-introduced into the cylinder shield the fuel particles from oxygen in the cylinder. This does a few things that negatively affect power. It increases the time delay from start of injection to start of combustion, it decreases the maximum pressure and maximum temperature reached in the cylinder and it increases the total time needed to completely burn the available fuel. Correct valve spring pressure is a very important piece of power production. If you are running over 4,500 rpm with a large cam, we suggest going with our 103 lb springs with dfferent heat treat and shot peen, for better longevity in extreme applications, as well as our light-weight 4130 or titanium retainers. For comparison, our 103lb springs have 102-104lb seat pressure and 180lb nose pressure with the 188-220. By running anything other than our 103lb 24v springs with our cam, you nullify the warranty we offer. If you run a cam with more than .320" lobe lift and anything other than the 103lb spring you run the chance of experiencing coil bind before maximum valve

Additional Information

Max RWHP 1000
Ships In 1-2 Days

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