Single or Dual valve springs for the 1.8 BP??
#1
Single or Dual valve springs for the 1.8 BP??
I'm in the process of searching for what valvetrain components I want to use, and I have a simple question.
Single or Dual valve springs? This is for a boost application with a goal of 350whp
Also...are the BPs Interference engines?
Single or Dual valve springs? This is for a boost application with a goal of 350whp
Also...are the BPs Interference engines?
Last edited by Moffitt; 07-08-2012 at 03:07 PM.
#7
I like double springs for 2 reason. You have a small safety net if one fails (not as important in our cars since they are not interference without some meaty pistons and/or cams), and they help cancel out harmonics that can cause valve float, because you can float the valves before the spring is actually insufficient if you hit a harmonic.
Of course you can get the second effect with less weight if you use bee hive springs or conical springs and those have the advantage of being lighter than a dual setup and also allowing more lift since they coil bind at a lower height than straight springs.
Of course you can get the second effect with less weight if you use bee hive springs or conical springs and those have the advantage of being lighter than a dual setup and also allowing more lift since they coil bind at a lower height than straight springs.
#9
This is the set I'm currently looking at.
Supertech SPRK-1012-M18D Dual Valve Springs Kit Miata BP 164 lbs
Im just having trouble now deciding how stiff I want them.
Too stiff?
Supertech SPRK-1012-M18D Dual Valve Springs Kit Miata BP 164 lbs
Im just having trouble now deciding how stiff I want them.
Too stiff?
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