Anatomy of a Blow Off Valve (BOV)
Detailed information on the construction of a Blitz SS Blow Off Valve!
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in response to some questions I’ve recieved…
If your car isn’t fitted with a turbocharger, your car ONLY SUCKS the air into the engine for combustion, so due to there being no “pressure in the pipe from the throttlebody or carby inlet to the air filter, there is nothing to push a blowoff valve to open.
When a turbo is fitted, there is extra pressure in the pipe between the turbine compressor blades and the engine, therefore when the butterfly is released (closed) the turbo is still pushing the air against the butterfly, and due to the pressure created by the turbo, it pushes the Blow off valve piston open, which in-turn prevents the turbo blades from slowing down…
The turbo remains at a high speed when the blow off valve opens and effectively gives less “turbo lag” (time the turbo takes to spool up to create boost)
So… if your vehicle is Naturally Aspirated (NO TURBO) a blowoff valve will not “blow off”, you’d be wasting your money!
For an illustration of how it works, here’s a diagram I created:
http://cordiafreaks.com/cpg1410/displayimage.php?pos=-146
If you’re looking for a cheap turbo car with good performance, I’d recommend the Mitsubishi Cordia Turbo (normally between $500 – $4000)…
If I’ve caught your interest, please visit my website: http://www.cordiafreaks.com
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This entry was posted on Salı, Mart 4th, 2008 at 09:10 and is filed under Marşlar. You can follow any comments to this post through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
