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Author Topic: Coil Bind  (Read 3824 times)

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Wheelhorseracer

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Coil Bind
« on: April 27, 2009, 09:53:51 am »
How close can the coils be at full lift before you run into issues..

Also, if I increase the lift of a stock cam, do you have to change the springs if you don't have coil bind at full lift and are able to shim the springs?

I was looking at that little 8 hp in the shed this weekend that is begging to be played with..
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Offline Hitch

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Re: Coil Bind
« Reply #1 on: April 27, 2009, 10:22:11 am »
I try to keep at least .050 between the coils.Stock springs (use 2 exaust springs) will work but if ya can afford it dual springs are the way to go.
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Carey Hulett aka Hitch
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Wheelhorseracer

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Re: Coil Bind
« Reply #2 on: April 27, 2009, 11:38:55 am »
It's the RPM that makes the valve float right? But if I want to run the motor over governed RPM.. I should put in better springs or just shim them?

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Offline rotten ron

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Re: Coil Bind
« Reply #3 on: April 27, 2009, 08:35:50 pm »
You should have about 45 pounds seat pressure .Ryan has a spring tester that goes up to 250 pounds.He could check them for you
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Wheelhorseracer

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Re: Coil Bind
« Reply #4 on: April 28, 2009, 08:21:36 am »
OK.. I will do that.. he could also give me the proper installed height..

Do Vanny springs fit the flatheads?
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Wheelhorseracer

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Re: Coil Bind
« Reply #5 on: April 28, 2009, 08:00:35 pm »
I was thinking... has anyone used or retro fitted their engine to run on a radius lifter instead of a mushroom lifter?
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