15 replies to this topic

[Al*]

hey so heres my scenario....I am currently running a 998cc A+ bored out .020 to 1014cc with a 266 piper cam, a 12g295 head and running on twin SU carbs...
I've always been a fan of supercharged cars so recently went hunting around for a supercharger... i found one from a guy locally that the guy was selling as an Eaton m45 off a new MINI but once i aquired it i realised it was not.... a little digging into it and i have discovered it to be a charger off of a Mercedes-Benz 2.3L C230 I've looked in my engine bay and i'm sure i can get it to fit... (i have access to milling machines and a tig welder so building the intakes etc. is no problem....) my big question is this... is there any point fitting this supercharger? i mean is there going to be a substancial gain from it or not? my understanding (and it is pretty vague) is that it shouldn't matter what size engine this came off of to make it work on my 1014cc should it? it will still be turning the pulley so should still be creating power..?...am i right here? I recall seeing in a magazine a while ago a guy that fit an aston martin supercharger to a mini... so this should work (at least in my mind)

I can put up pics if that would help at all....

Any help on this topic would be appreciated more than you know.... basically just am willing to put in the time to do this but want some assurtance that there is some point to actually doing it...?

thanks alot...

Al

[biggav]

anything is possible with time and money.

[Al*]

thats the thing i really don't think it would cost all that much... doing everything myself all i will need to buy is aluminum to make my intakes and bracketry, an hif44 carb, an electric fuel pump, a belt and possbly an idler pulley..... not much else that i can see having to buy really? did i miss anything? I see this taking alot of time and effort but the car is going to be parked for 7 monts or so for the long canadian winter....

Al

[biggav]

crack on!!! lots of pics please!!!!

[Al*]

anyone out there have the technical knowledge to say yay or nay as to if this will work or not? because as i said above i see this working in theory but just want that confirmation....

cheers
Al

[moke'n'andy]

anyone out there have the technical knowledge to say yay or nay as to if this will work or not? because as i said above i see this working in theory but just want that confirmation....

cheers
Al

I am supercharging a stock 998 at the moment.

I have a metro turbo carby, that has been re built and re kitted.
AISIN AMR300 super charger
Intercooler
Elecrtic fuel pump
fuel pressure regulator
intercooler
blow off valve.

The key is to work out the system - Mine is blow through:
Air cleaner - super charger - intercooler - blowoff valve - carby - motor.

From my investigation:
The blower should be sized to find the right CC displaacment to suit the engine - it then needs to be spun at the correct rate to produce the boos required. A small cc output blower (300 cc per rev) would have to spin twice as fast as a 600 cc per rev for the same out put. Blowers have a limit to the speed they can spin. - this needs to be found out.

Mine is 300cc per rev (the eaton 45 is 450 cc per rev I think)

RPM 6000
Engine CC 998
PSI Boost Wanted 6
CC displacement of Blower 450

1.408163265 Boost Ratio
702.6734694 volume / rev
1.561496599 pulley ratio of crank speed
9369 Blower rpm

Above is a scenario based on a 998, 6 PSI boost on a eaton 45cc displacement - tou would need a pulley to give a 1.561 speed increase of crank speed to do it. I have created a excel sperad sheet to calculate the above - e mail me if you want it - to run other set ups.








I will be fitting up the gear in the newx few weeks - making up brackets to fit the intercooler today.

[Al*]

thansk alot moke'n'andy thats alot of info that is now rolling around in my head.... apreciate it... and i will be emailing you for that spreadsheet.. thanks...

heres a couple of pics of my supercharger... shows size by being next to a mini intake manifold....

cheers,
Al

[moke'n'andy]

anyone out there have the technical knowledge to say yay or nay as to if this will work or not? because as i said above i see this working in theory but just want that confirmation....

cheers
Al

I am supercharging a stock 998 at the moment.

I have a metro turbo carby, that has been re built and re kitted.
AISIN AMR300 super charger
Intercooler
Elecrtic fuel pump
fuel pressure regulator
intercooler
blow off valve.

The key is to work out the system - Mine is blow through:
Air cleaner - super charger - intercooler - blowoff valve - carby - motor.

From my investigation:
The blower should be sized to find the right CC displaacment to suit the engine - it then needs to be spun at the correct rate to produce the boos required. A small cc output blower (300 cc per rev) would have to spin twice as fast as a 600 cc per rev for the same out put. Blowers have a limit to the speed they can spin. - this needs to be found out.

Mine is 300cc per rev (the eaton 45 is 450 cc per rev I think)

RPM 6000
Engine CC 998
PSI Boost Wanted 6
CC displacement of Blower 450

1.408163265 Boost Ratio
702.6734694 volume / rev
1.561496599 pulley ratio of crank speed
9369 Blower rpm

Above is a scenario based on a 998, 6 PSI boost on a eaton 45cc displacement - tou would need a pulley to give a 1.561 speed increase of crank speed to do it. I have created a excel sperad sheet to calculate the above - e mail me if you want it - to run other set ups.








I will be fitting up the gear in the newx few weeks - making up brackets to fit the intercooler today.

if you want a copy of the sheet my email address is:

geue at ozemail dot com dot au (replace at-@ replace dot-. if you know what I mean.)

[Al*]

thanks a bunch for that spreadsheet andy it is really handy... so as i was searching the internet for info to help me figure out what i will have to do to this supercharger i got another twig thrown between my spokes.... it seems that this certainly isn't off of a mercedes c230 as the c230 ran an eaton m62 with a built in clutch assembly... mine is myserious for sure... i've been searching and searching trying to figure out what it could be off of and i can't find anything like it... i have no idea what this is off of... i'm gonna look a little more but i'm getting really tempted to just try and find an eaton m45 as it would be a little easier.. (still plan to fab it up myself though)

so if anyone has any clue where this supercharger is from please help!!!

thanks,
Al

[miniboo]

it does look very similar to a eaton m45. it is easy to find a m45 in the UK. obviously not here on canada thoguh. maybe you could get one in the UK and then ship it over. Vmax sell parts for a kit seperately now. have a look on their website. vmaxscart or something like that

[Al*]

yeah it does look really similar to an eaton m45 which is what has me thinking it might be an older one perhaps??? the m45 that is on the new MINI (that everyone is using has the "intake" to the supercharber on the side opposite the pulley coming in sideways whereas this one feeds in through the bottom right next to the "exhaust" bit..... anyone know what else has had eaton m45 chargers through history....

and yeah thanks miniboo vmaxscart does do seperate peices but i'd really like to try to hash this oout as i already have it... (and to be honest it's a tad different.. which i like)

cheers for any and all help...

Al

[cowboy]

Al ive been having a look at som things and come up with this might help with why to use the supercharger not how to build it though..

supercharger info

worth a read if nothing else

[moke'n'andy]

I ran my Stock 998 up on a dyno - a throbbing 30.2 HP at the wheels.

The only direction is up from here!

[Matrix]

This is an Eaton positive displacement roots-type supercharger I am using on mine might help you I with your id. Yours
does look like a BMW one but an early one?

[ferrox_666]

Draw through draw through! the fuel suspended in the air closes up the gaps in the 'charger lobes, however todays machining standards may make that statement irrelevent!?

yo Matrix is that spring thing above the intake runners a valve incase of backfires? i've read about them.. Also are you going to support the supercharger other than just the intakes ?

ps this is cool stuff!