Supercharger: Possibility for our engines? Options

[Dr Evil]

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?

[Zimms]

Roots style blower

I am still a big turbo fan, though. THere are a lot of sizes and with the aftermarket availability of EFI, you should be able to get the lag down to something respectable.

I really like this Turbo bug clip. The guy posts on Jake's site, and his set up looks sweat!

Sandeep Bug

Sorry for highjack. Back to supercharging!

[type47]

Volumex supercharger

[rick 918-S]

Paxton has been around since the begining of hot rodding Here is a 1965 example but they have been around longer than that.

http://www.paxtonauto.com/article.php?id=4

You need to add an AC clutch to the drive belt so you can switch it off and one like Mad Max.

[SLITS]

Get a Supercharger off a Merceces Kompressor ... has an electic clutch already.

[sixnotfour]

There is a boxster supercharger set up used for 3k in seattle.
craigslist

[sixnotfour]

Or there is this electric setup;
http://www.superchargerswarehouse.com/Pors...-Superchargers/

[bozo914]

Dick Landy Industries did a Rootes type for the Type 1, maybe you could rig up 2 for the Corvair. Definite WOW factor.

[Dr Evil]

Or there is this electric setup;
http://www.superchargerswarehouse.com/Pors...-Superchargers/

Really? I have a hard time believing that Porsche sanctioned the use of its name with this product. If it worked,3psi would be nice for $200. Shit, I would chain 3 of them and get 9psi (IMG:style_emoticons/default/smile.gif)

[Dr Evil]

Get a Supercharger off a Merceces Kompressor ... has an electic clutch already.

Picture? Example? Diagram? Hieroglyph?

[Hontec]

Mercedes SLK compressors are roots style and very cheap to come by. Over here they are used plentyful to whatever engine you can come up with. Just make a bracket and pick your pulley size for the rpm/pressure..

Advantage of SC vs Turbo , is no lag...instant power and if you keep the roots under 10-12 psi, no cooling required (roots chargers are very hard to cool, you need to custom build a cooled intake.)

The rotrex chargers are the new thing, I just built one on a Honda S2000...450hp, intercooled..they are beautiful.....

Check out Kraftwerks for some nice units.....or Rotrex

[Dr Evil]

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

[Dr Evil]

Mercedes SLK compressors are roots style and very cheap to come by. Over here they are used plentyful to whatever engine you can come up with. Just make a bracket and pick your pulley size for the rpm/pressure..

Advantage of SC vs Turbo , is no lag...instant power and if you keep the roots under 10-12 psi, no cooling required (roots chargers are very hard to cool, you need to custom build a cooled intake.)

The rotrex chargers are the new thing, I just built one on a Honda S2000...450hp, intercooled..they are beautiful.....

Check out Kraftwerks for some nice units.....or Rotrex

Wow, they are real cheap in comparison. I wonder what direction they rotate.

This will have to be incorporated into my engine at some time.

['73-914kid]

Now I want a supercharger on my 914.. thanks guys..
@Type47, is your motor able to breath with that carb on it? Seems kinda small for a supercharged engine?

And how do you connect the belt to the impellor fan?

[Dr Evil]

Question; can a SC bee hooked up to a CIS without modification to the CIS action? It would appear to be possible since it is volume/fuel dependent.

[sean_v8_914]

same way they did the AC. although it might need a beefier belt
914 had a pulley behind the impeller. belt exit went behind the fan housing to the right opposite teh alternator

or maybe could be like they did the smog pump. it was mounted atop the fdan housing. there was an extender shaft in front of teh fan. the fan housing had a 3 legged bracket suspended in front of teh fan mounted to the 3 holes that the Bus used for teh fan screeen

Jake has said that boosting teh type 4 creates head sealing challenges. perhaps modest boost #s would be OK

[banger]

You might want to look at a Corrado G60 supercharger. These are fairly small scroll compressors, and can be found pretty cheap. Looks like you could use a modified smog pump setup and mount it above the engine.

[rohar]

Question; can a SC bee hooked up to a CIS without modification to the CIS action? It would appear to be possible since it is volume/fuel dependent.

It can be done on CIS, but I'd recommended a warm up regulator off an audi 5k turbo or similar vintage turbo brick. It's boost sensitive and will increase pressure as the boost comes on.

[bandjoey]

Might as well look into alcohol injection too. (IMG:style_emoticons/default/smile.gif)

[gandalf_025]

I've never dealt with a supercharger, always turbo's..
BUT, it looks like a supercharger would be simpler to plumb and would keep the exhaust away from the incoming air.
And could be placed closer to the intake ports which would = less lag all by itself.

The only question I would have is how much HP does it take to run it ? The big draw of a turbo is that it doesn't take HP to run relatively speaking. Unless you count the restriction in the exhaust flow.

As far as the electric fan "Superchargers" I'd want a lot of proof they really do work..

Judson made superchargers for VW's and Corvairs in the 60's.. I have seen some show up on E-bay at times.