Talk to me about power adders...

Okay I think that I have gone sick in the head (so I fit in just fine with the rest of you).

I got thinking about the small superchargers used to add some balls to some of the more modern 4cyl and V6 engines. Would two of these little buggers be able to pump enough extra air into a 350 to make it worthwhile? I have odd images of the new injection setup I just bought, and a couple of these small superchargers shoved under the hood of the Olds could make things a bit exciting. There is quite a bit of room under that hood so I think things would fit, it would just take a load of fab work and learning.

Are there better options? Not sure I would want to go with nitrous and turbos have always seemed more complex to me I'm not sure why.

It doesn't help I'm watching Mad Max again and drooling over the supercharger in the interceptor

one big supercharger? It would simplify things and there is no advantage to two small sc's like there is with two small turbos.

mw wrote: one big supercharger?

Generally very expensive. I'm looking at ones that you can find for generally a small amount especially when yanked out of a wrecked car

mw wrote: one big supercharger? It would simplify things and there is no advantage to two small sc's like there is with two small turbos.

Agree. A lot easier if you are talking "rootes" type superchargers. Mainfolding for two "rootes" types would be a nightmare.

You could use two small centrifugals. Charge tubing woild be easier to do. But performance (boost change, etc) would be more like a turbo.

Hal wrote: Agree. A lot easier if you are talking "rootes" type superchargers. Mainfolding for two "rootes" types would be a nightmare.

I was talking roots type (least expensive). I believe you can "remote mount" one (or two) of these off to the sides where you don't have to dill with the manifold mess. It would be about the same as the the centrifugal ones just cost less. Think the Eaton M90 as a reference.

Why not look for an M112 take-off from a Lightning or 03-04 Cobra? Those guys are always replacing the Eaton blowers with twin-screws so the take-offs are relatively cheap. A 112 may be a bit small for a 350, but should still do some good.

http://www.noe-v.com/images/articles/tbucketengine.jpg

aussiesmg wrote: http://www.noe-v.com/images/articles/tbucketengine.jpg

HOLY COW! I doon't want a ride in the bottom one! TORQUE MONSTER + no weight = squirley as @#$# ride!

1500 hp, built by Rod Hadfield in Oz, check his other cars out

http://grassrootsmotorsports.com/forum/grm/rod-hadfield/16770/page1/

Just found this http://www.toohighpsi.com/SCTC/sctc.htm

Guy built a twin supercharger Ford Turbo Coupe. He is using twin Eaton M90 superchargers off of Supercoupes.

rebelgtp wrote: I was talking roots type (least expensive). I believe you can "remote mount" one (or two) of these off to the sides where you don't have to dill with the manifold mess. It would be about the same as the the centrifugal ones just cost less. Think the Eaton M90 as a reference.

But you still have to have some type of adapter to feed the air from the rectangular output of an Eaton into the head or at least into some intake manifold.

Edit: I see you found one while I was typing. Would be interesting to see how the adapter fits to the mainifold.

rebelgtp wrote: Just found this http://www.toohighpsi.com/SCTC/sctc.htm Guy built a twin supercharger Ford Turbo Coupe. He is using twin Eaton M90 superchargers off of Supercoupes.

THAT sounds like a fantastic, interesting, and very unique idea. You could probably do it better with two turbos, but I like this idea, and the lack of lag. It sounds like fun - try it and let us know, What possible donors are you looking at?

Well my local yard seems to be a hot bed for Pontiac GTP's...so they have several M90's on their shelves.

Hal ah I see what you are talking about now. I thought you were talking about a manifold setup similar to the old top mounted roots blowers you see sticking out of the hood of old hot rods. I have found someone doing a similar setup though with one M90 on a 3rd gen f-body pumping through a TPI.

How about a centrifugal feeding a roots?

Or twin turbos feeding into above setup?

Rick Dobbertin's J2000 - Hot Rod of the year in 1986. Two superchargers, two turbochargers, and 20-port Nitrous. Probably the height of the "ProStreet" movement back in the day.

I think the blower(s) were made by Magnacharger.

alright this is just getting silly

Turbos plus nitrous does a lot to cool the incoming chsrge. Just sayin.

An M90 consumes what?.....45hp at peak boost.

Yup

So two of the suckers would take some 90hp to turn at high boost. I would hope one larger supercharger might be a bit more efficient...or just a turbo and a supercharger.

For some reason this thread made me want to make a "Power Thirst" spoof for cars...

SkinnyG wrote: Rick Dobbertin's J2000 - Hot Rod of the year in 1986. Two superchargers, two turbochargers, and 20-port Nitrous. Probably the height of the "ProStreet" movement back in the day. I think the blower(s) were made by Magnacharger.

Most of those crazy pro street cars had nonfunctional stuff to make the bling factor. I'll bet the thing couldn't manage a 13 second pass. Those guys are (were) the anti GRM and rarely had the car, or the car prep to make anything come of all the shiny.

The idea about how much power two blowers take is valid, but I suspect it will be close to the argument about one big turbo vs two little ones, the two blowers might take a smidgen more than a comparably sized big one, but if they are sitting there at the junkyard, it may be worth the loss to save the wallet from a custom new blower.

tuna55 wrote: The idea about how much power two blowers take is valid, but I suspect it will be close to the argument about one big turbo vs two little ones, the two blowers might take a smidgen more than a comparably sized big one, but if they are sitting there at the junkyard, it may be worth the loss to save the wallet from a custom new blower.

This is kind of my point. A single big custom blower could be done, might be a little more efficient but its also going to drain my wallet real quick. My local junk yard actually gets these smaller superchargers in and they can be had for a reasonable price. On the other hand I live in a rural area and the only turbos available at the yards are big honking things off of diesel trucks.

Shoot this idea is a lot more tame than some of the stuff I see going around on this place. Or do I need to remind some of you of the Durocco and some of the other crazy engine swaps and the like some of you guys have done .

Heck, you could probably even whip up a dual supercharged engine on a CHALLENGE BUDGET. Try that with a big blower out of a Summit catalog.

-Brian

rebelgtp wrote: .... On the other hand I live in a rural area and the only turbos available at the yards are big honking things off of diesel trucks....

To quote Rick James: "Holsets are a hulluva drug..."

rebelgtp wrote: *snip* smaller superchargers in and they can be had for a reasonable price. *snip* the only turbos available at the yards are big honking things off of diesel trucks. *snip*

Sounds like you need to build a twin-charged v8 with an m90 spooling a huge turbo

Why not look for an M112 take-off from a Lightning or 03-04 Cobra? Those guys are always replacing the Eaton blowers with twin-screws so the take-offs are relatively cheap

^ This, all the way.

I mean, you CAN run a single m90 on a small block, spin the E36 M3 out of it, and make boost.. as long as you remote mount it and use a badass intercooler.

But an m112 will support more power than 98% of street-car small blocks are making.