Help Identify Part Under Spring Seat
Thread Starter
Staging Lane
Joined: Dec 2010
Posts: 83
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Help Identify Part Under Spring Seat For some reason my engine builder did not put one under the intake seat??? It looks like I need to order 8 more any idea on part#/where to get? Thanks for the help. Somewhat new to this.
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Thread Starter
Staging Lane
Joined: Dec 2010
Posts: 83
Likes: 0
The copper shim. He installed some beehive springs however, I wanted to step up to a dual spring PRC .650" spring kit. I got the PRC kit and was in the middle of installing it when I noticed these copper shims. I'm at the point now do I go without them or try to find 8 more, or leave it the way it is. They are supper thin and should not change anything. By the way this is a 390 built for boost and that was the reason for going with the dual spring to deal with the pressure better.
It appears the original installer measured the installed spring height and made adjustments to get the correct seat value. If you are going to a different spring, then you need to measure installed height and figure out what shims (if any) are required to obtain the seat force you need for your setup. In other words, but a spring micrometer and take the measurements. Don't just add shims because they were there.
I usually put them in a spreadsheet so I can get all the springs close to each other in seat force.
I usually put them in a spreadsheet so I can get all the springs close to each other in seat force.
The copper shim. He installed some beehive springs however, I wanted to step up to a dual spring PRC .650" spring kit. I got the PRC kit and was in the middle of installing it when I noticed these copper shims. I'm at the point now do I go without them or try to find 8 more, or leave it the way it is. They are supper thin and should not change anything. By the way this is a 390 built for boost and that was the reason for going with the dual spring to deal with the pressure better.
