Is there really a benefit from using a twin supercharger setup over a single. I mean some twin turbo applications I understand. On some you have a smaller turbo for low-end and a bigger turbo for highend, on others you have one turbo per cylinder bank. But you dont need that with a supercharger. Aren't you just creating more parasitic loss?
Are two sc's feeding 2.5L each more efficient than one feeding 5.0L? Or would two sc's make more cfm at lower rpm's than a single?
I just dont see the point.

if you look at the m5 intake layout you can see it has 2 air intake boxes for each side of the engine. 2 superchargers for 2 intakes seems like a logical step to me.

if you look at the m5 intake layout you can see it has 2 air intake boxes for each side of the engine. 2 superchargers for 2 intakes seems like a logical step to me.

Not the reason at all. Those two intake pipes feed into a single plenum on top of the motor. The dinan M5 s/c has a single inlet pipe from a single s/c.

I would guess it would have to do with the flow of the rotex units.

^^^^^Yeah, my thoughts exactly. Instead of designing a supercharger large enough to supply the engine just bolt on 2 of these smaller one's. Seems like a huge waste of money to me.

The rotex chargers are tiny and dont support alot of airflow, so they use 2.

There are multiple other supercharger brands that would do with a single unit at this powerlevel - but none of them have a contract with AA.

why? because

I mean some twin turbo applications I understand. On some you have a smaller turbo for low-end and a bigger turbo for highend, on others you have one turbo per cylinder bank. .

this isnt the only reason for a twin turbo setup.. you can use 2 smaller turbos and have the exact power ability as a larger one, but you will have faster spool up then a single turbo

this isnt the only reason for a twin turbo setup.. you can use 2 smaller turbos and have the exact power ability as a larger one, but you will have faster spool up then a single turbo
Alot of guys like to use the twin banks = twin turbos idea. However, if there is enough room for one turbo, then that would be ideal. The cost alone of twin everything is huge!

If you think about how much lag 4-cyl turbo engines have depending on the turbos they are sized up to...look at a V8. It is like two 4 bangers merged together sharing the same crankshaft. Now anything that is T3 might have a little bit too much lag for one side. So two of those isn't going to help out the lag since each turbo only gets exhaust gases from 4 runners.

However, think of all the exhaust gases going from 8 runners into one turbo! Now you can bolt up a turbo that normally has a lot of lag on a 6-cyl engine but will spool quickly on this V8. Instantly you can bolt on a 800rwhp turbo that normally has a ton of lag, that now spools up like a tiny turbo on this V8, yet holds until redline. My buddy has a small block with a T70 turbo. That things spools instantly and he makes 800rwhp!

I wish I had the money. A guy I know has a M5 and stopped by my office today. Luckily I was driving the Supra. He had never seen it but heard about it. I showed every inch of her to him. Then he said, "So, when are we racing for slips?" I laughed and said, "Oh yeah! I sure could use an M5!" It has ACS Type II wheels on it. Man I would single turbo the hell out of that! :devillook

if you look at the m5 intake layout you can see it has 2 air intake boxes for each side of the engine. 2 superchargers for 2 intakes seems like a logical step to me.

:lol

This actually made me laugh out loud ... that's kinda like saying if you had four exhaust tips on a four cylinder car, you'd quadruple the HP gain. Both intakes feed into one section of the motor if you look carefully, as Spencer mentioned.

Tisk Tisk I haven't even looked at this thread since I posted it last night. I agree two sc's seems like a waste of money to me, but what is this about a contract? AA picked up Stimpee's twin screw kit, why couldn't they use a vortech unit for the M5? I doubt that they're obligated to use rotrex units because of a contract.

And Bartco I dont think two turbos would give you the same power ability as a single larger one. Correct me if I'm wrong but I think the reason people switch to single turbos, say, on there tt supras is for higher efficiency meaning better power output.