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  #1  
Old 03-25-2006, 04:52 AM
alk1979's Avatar
alk1979 alk1979 is offline
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Location: Pennsylvania
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Question How to know what to trim from a valve spring?

I'm trying to go low pressure. I am stuck at 460psi 285-290 fps.

Is there a way to know when your valve spring is to light. I did the valve mod to my stock valve . I have the 32* light valve and the heavy main.

I am looking to get 400 psi with a medium or light main spring" the heavy spring is to loud and I'm told it puts extra wear on the striker. If I go lighter on the valve spring is it possible to waste gas? If I over trim the spring would streching it out fix it?

Maybe I need different parts in my gun? Any ideas?

Thanks
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  #2  
Old 03-25-2006, 10:56 AM
ooglieboogliebob ooglieboogliebob is offline
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Default Re: How to know what to trim from a valve spring?

well ... try a new VA ... since you really can't go that LP without high flowing parts ... and you might want to fiddle with your springs a bit ...

a light valve will use more gas though ... try the new VA first though .. you should be able to get a little lower with that ...
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  #3  
Old 03-25-2006, 11:40 AM
Hob Hayward's Avatar
Hob Hayward Hob Hayward is offline
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Default Re: How to know what to trim from a valve spring?

A drilled VA should be fine, but if you only drilled one hole, drill to either side of the main hole to open it up alot more.
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  #4  
Old 03-25-2006, 12:51 PM
alk1979's Avatar
alk1979 alk1979 is offline
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Default Re: How to know what to trim from a valve spring?

Quote:
A drilled VA should be fine, but if you only drilled one hole, drill to either side of the main hole to open it up alot more.
When you say main hole do you mean coming from the regulator or coming from the lpc. I have two holes drilled coming from the regulator but from the lpc its a long run with a drill bit I didn't wanna chance going crooked but I will if it makes a difference.

Thanks for the help!!
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Electra DX---Evlution II
BL torpedo
Phycobalistics long drop
Drilled and Bored VA
Stock Valve---Bolt mod
32* light valve heavy main
Polished internals 14" evil pipe kit
48/3000 pmi r/t switch mod
Stock for the rest
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  #5  
Old 03-25-2006, 01:28 PM
ooglieboogliebob ooglieboogliebob is offline
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Default Re: How to know what to trim from a valve spring?

well you want to drill both of them ...
VA mod

But ... other VA's will give you better flow resulting in lower PSI's
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  #6  
Old 03-25-2006, 02:27 PM
druid's Avatar
druid druid is offline
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Default Re: How to know what to trim from a valve spring?

he means this....
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