Supercharger: Possibility for our engines? |
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Supercharger: Possibility for our engines? |
Dr Evil |
Mar 9 2011, 04:47 AM
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#1
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
I was looking into ways to do odd things to make more power. What else is new. I came across a standard, root type supercharger hooked up to a corvair engine that was pretty kick ass. I like superchargers in that they are cleaner to install that turbos and do not have the lag. Then, I found the Vortech centrifugal superchargers and felt that these just might be an interesting way to bolt on power.
http://www.vortechsuperchargers.com/catego...n=SUPERCHARGERS Cheap? No friggen way, but cool! Used ones can be gotten for much less if you know what model to use. I need to read up on what is required of an engine to be supercharged vs turbo charged if there is a difference in configuration. An interesting aside for my specific interests regarding the reverse running corvair engine; the 4cyl Honda ones would be easily adaptable, possibly. The only problem I see is that there are no 3.1L honda 4cyl engines. So, what do y'all know about supercharging? How about thoughts on doing it to a TIV or any other power plant that we could throw into our cars? |
Dr Evil |
Mar 9 2011, 09:01 AM
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#2
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Ah, a fatal flaw in the centrifugal setup:
"But the biggest disadvantage of the centrifugal supercharger over its positive-displacement counterparts is the low boost pressures produced at low engine RPMs. As we mentioned earlier, this is because the centrifugal supercharger's air-flow rate increases at the square of its shaft RPM. The result is that a centrifugal supercharger will typically produce maximum boost at the engine's redline with hardly any boost pressure below 2,000 engine RPM. However, boost pressure does build quite quickly in the upper half of the engine's powerband. CONCLUSION The lack of low boost at low engine RPM means that the centrifugal supercharger would be suitable for quick reving, light cars with manual transmissions rather than heavier vehicles or vehicles with automatic transmissions. Thus, if you have a truck or a car with an automatic transmission, a positive-displacement supercharger, which makes full boost as low as 1,500 engine RPM, would be a better option. " From: http://www.custom-car.us/superchargers/centrifugal.aspx |
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