Supercharged or turbo

secla · Post by **secla** » Wed Feb 27, 2013 11:28 pm

I`l never understand why anyone would choose a supercharger over a turbo. TURBO TURBO TURBO
And more so if you want big bhp

As for what you mentioned about 4wd earlier you could use a crv box with a h2b gearbox adapter plate. But i dont think a crv box would hold up very well without some major work

Mudgey · Post by **Mudgey** » Thu Feb 28, 2013 3:57 pm

L

secla wrote:I`l never understand why anyone would choose a supercharger over a turbo. TURBO TURBO TURBO
And more so if you want big bhp

As for what you mentioned about 4wd earlier you could use a crv box with a h2b gearbox adapter plate. But i dont think a crv box would hold up very well without some major work

Here is my personal opinion of both systems:

Turbo:
+ Better adiabatic efficiency = more power per psi than SC.
- Varying degrees of lag.
- No power at low end of the rpm band.
- Non linear ramp up of torque = feels amazing, but can get you in trouble in corners.

Supercharger:
+ Instant power when you mash the throttle.
+ increase in power over whole rpm range.
- Lower adiabatic efficiency, means less power per psi of boost compared to turbo.

In my perfect world i'd have a twin charged car, the supercharger can provide the low down grunt which feels great when driving around town, and then the higher up the rev range you go you can get that fantastic sensation of acceleration you get only with a turbo!

secla · Post by **secla** » Thu Feb 28, 2013 5:22 pm

twin chargers only work to an extent. the charger becomes a restriction at higher boost and heat will become a big issue.

generally intake temps at high psi is a problem with chargers + parasitic losses

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Fri Mar 01, 2013 9:27 am

Really are we doing this?

Fact remains, Mudgey is building one of the two options.

Danni22 · Post by **Danni22** » Fri Mar 08, 2013 11:55 am

I've found a short snout, eaton M90 for sale BUT would that be too large for my application?

Also exactly why do the internals need flipping? Is the do to what way out belts drive on the h22 or the fact it's mounted the wrong way?

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Fri Mar 08, 2013 7:16 pm

M90 will be too much bud. The amount of boost that'll produce you will be into either Mahle forged pistons or sleeved block territory. Would be fun though!

As for flipping the rotors, its down to the rotation direction of the H22 engines. You mount it where you plan and you'll be sucking air not pushing it.

Easiest thing is actually a double sided belt and run it back on itself to run the charger the right way round. Means some additional head scratching and some more brackets/idler pulleys, but less hassle.

Danni22 · Post by **Danni22** » Fri Mar 08, 2013 7:30 pm

I'm loving that idea!! Getting a double sided belt make life so much easier!!

The M62 hunt starts again lol

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Mon Mar 11, 2013 1:16 pm

Merc's will be your best bet bud. Intrigued to know what that M90 was off though, unless it's from another country.

Danni22 · Post by **Danni22** » Mon Mar 11, 2013 2:46 pm

It's off a jaguar

I'm struggling to find an m62 the ones iv found are all m45

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Mon Mar 11, 2013 4:06 pm

Ah, is it the older V6 one, the newer V8 ones have a M112 - avoid that like the plague!

Yeah, unfortunately for the size of most production car engines, M45's are ten a penny, but too under powered for our cars.

Just a case of keep searching. Try some Merc forums to try and find the exact models that had the M62. It'll be the larger capacity engines. I did used to know, but it's slipped my memory. Sorry!

Lude Generation

Supercharged or turbo

Turbo or supercharged