Okay thanks guys as you can see there is always another way to skin the cat, never thought of hydraulic. Ia,
Conversion from NA to SUPERCHARGED NOT Turbo....
- Thread starter ianstaley
- Start date
What about the load rating, not sure on Modern Blowers but the old 6/71's would take 100hp to turn at 5000 rpm.redrocco;1891165 said:
At 12,800 RPM the f11-005 has about 20 LBS TQ and 19 HP if my math is correct. Probably wouldn't spin a big old 871 but should be just fine for a 1.5L to 3.0L whipple or autorotor style supercharger.
A couple view points of my own, although some of the ideas presented are quite interesting to me...
-I can only think of maybe 2-3 modern boosted cars running superchargers anymore, most are high end sport/super cars.
-A small, responsive turbocharger setup will make a smaller engine feel bigger. Size it right, and you won't have noticeable lag. Example that comes to my mind is the later Z31 turbo 300zx. They spooled so fast, it felt like you were driving a small displacement V8.
To play devil's advocate here, a smaller ball bearing turbo would grant near instant spool over a nice rpm range, and still provide that extra "oomph". :evildeal:
-I can only think of maybe 2-3 modern boosted cars running superchargers anymore, most are high end sport/super cars.
-A small, responsive turbocharger setup will make a smaller engine feel bigger. Size it right, and you won't have noticeable lag. Example that comes to my mind is the later Z31 turbo 300zx. They spooled so fast, it felt like you were driving a small displacement V8.
To play devil's advocate here, a smaller ball bearing turbo would grant near instant spool over a nice rpm range, and still provide that extra "oomph". :evildeal:
te72;1891457 said:
Modern turbos have far better characteristics than the turbos most of us are used to. Hell, throw in modern variable vain technology and it's even better (look at the porsche 911).
I'm doing the next best thing, since there hasnt been a good solid reliable aftermarket variable vane turbo: EFR turbo, twin scroll, and a quick spool valve!
Yep, lots of ways to do it.
- Quick-spool valve
- Antilag
- Honda's flapper style
- Porsche's moving veins
- diesels that slide a plate back and forth
Even without that, a modern designed turbo (turbine wheel, compressor wheel, housings, ball bearings, sized correctly) will spool like nobody's business and supply serious low end torque.
Hell, a properly sized turbo doesn't really have lag. If you have lag, it's called a transmission...downshift.
- Quick-spool valve
- Antilag
- Honda's flapper style
- Porsche's moving veins
- diesels that slide a plate back and forth
Even without that, a modern designed turbo (turbine wheel, compressor wheel, housings, ball bearings, sized correctly) will spool like nobody's business and supply serious low end torque.
Hell, a properly sized turbo doesn't really have lag. If you have lag, it's called a transmission...downshift.
Poodles;1892431 said:
This guy knows whats up. It's not the 80s anymore...in 30 years, there has been massive leaps and bounds made in turbo technology. Heck, in just the past 5 years there have been. I dont imagine there to be massive improvements (like billet compressor wheels have been) to happen again in the near future, unless VGTs or foil bearings become feasible, but engineers will find a way!
Look at the original 911's for example. The term "slow in fast out" was made for them because the turbos weren't progressive in their power delivery...
I have to admit guy's I liked this statement best "If you have lag, it's called a transmission... down shift." the biggest point I was trying to look at was doing as little as possible to the bottom end of the engine other than regrind ect. By using turbo pistons I would be reducing the compression a bit, however, so to hear with a supercharger that would be a backwards step. So right now still thinking about the future. I do realise that a modern Turbo is nothing like the KKK that I had fitted to the beamer. So that may still be the best way. Need to check out the net for the differences in the blocks. Thanks all .....