Supercharging?

[mr brightside]

Time for my annual daydream. I was thinking how much i wanted a Bathurst Holden Monaro the other day whilst gunning it along the Buttertubs Pass and it got me thinking about whether a supercharger conversion is available for the 944/924s without piston changes. Apart from the problem of where to put a supercharger under the bonnet of a 924s, it doesn't have the provision for a belt by say ditching the air con. There's a company called Storm Developments who fit a Rotrex charger to the Mk2 Golf 8v so a similar system must be compatible with a barn door MAF/Motronic. Any opinions?

 

[pauljmcnulty]

See here

 

[mr brightside]

Of course- lose the airbox, but i still wouldn't have a pulley for it. Nice heatshielding there, not seen that done on hoses before.

 

[robwright]

Didn't Chop Shop supercharge a 944 for David Ginola's son????

 

[Suffolk944]

I recall them chopping up a 944 to produce a sort of American musclecar facsimile for Ginola junior, can't recall if they supercharged it or not.

 

[mr brightside]

Sheesh, he's really gone to town with it hasn't he? Are the engine management mods definitely necessary for it to run and fuel properly under forced induction?

 

[robwright]

Yeah I remember having a tear in my eye as they destroyed a 944 [] but being strangely interested when they blowered the engine. I feel a youtube search coming on.

 

[Lizard]

Top idea & something I've been pondering for my 2.5 8v, I've a supercharged Mx5 just a basic kit, no management, or intercooler standard injectors & is good for in region of 40bhp over stock & makes for a great fun little car - is caged with decnet suspension too, the mx5 lumps are known to be good for 250bhp easy with turbos & s/c.


It should not be beyond the capabilities of a decent engineer to fab up & sort a BMW Mini supercharger- M45 cheap on ebay, an m62 would be better if you could get hold of one tho, ecu can be easily remapped at hi tech in brum if needed, no need to intercooler at low boost- 5psi area tho its easy to sort an intercooler & a v good idea, injectors should flow the extra fine. 190-200bhp & lots of torque should be easy & cheap, how well the 8v woudl flow beyund low boost & that level I dont know but is a 924 sprinter/hill climber with 245bhp

Potentially if you can get the charger cheap enough I reckon this could be done for hundreds rather than thousands, if you have thousands as a budget an s2 or 968 lump transplant is really more apealing.

 

[mr brightside]

I'd rather not bother with an engine swap personally, you don't know what the new engine's like and you may aswell just get an S2. I always remember the value in knowing your own engine, you get to know how it sings to you and what big jobs might be coming up in the future- very important! I know that before fitting a charger i'd need to do my headgasket as the car's done 97k on the original, and sort out the oil flow problem to the tappets which has caused then to be noisy on a cold start. I'd also need to recon my noisy gearbox and maybe change the diff to stop it lighting up the inside wheel and get a better application of my extra power. Big reds would be an idea too. I don't have the garage facilities to custom make a conversion although i do have the engineering skills, so i'd be looking at sending it to someone.

 

[supersport]

ORIGINAL: mr brightside

Time for my annual daydream. I was thinking how much i wanted a Bathurst Holden Monaro the other day whilst gunning it along the Buttertubs Pass and it got me thinking about whether a supercharger conversion is available for the 944/924s without piston changes. Apart from the problem of where to put a supercharger under the bonnet of a 924s, it doesn't have the provision for a belt by say ditching the air con. There's a company called Storm Developments who fit a Rotrex charger to the Mk2 Golf 8v so a similar system must be compatible with a barn door MAF/Motronic. Any opinions?

mmmm, Buttertubs [8D]

Was along there myself just a couple of weeks ago.

 

[mr brightside]

ORIGINAL: supersport

mmmm, Buttertubs [8D]

Was along there myself just a couple of weeks ago.

Best way to get to Swaledale by far, you can worry the folk staring into the Buttertubs with a nice Dansk soundtrack.

 

[Mike_Pollock]

Peter Empson on here has a supercharged 3.0 in a Lux body which is a VERY quick car, (it is also rather light!)
Not sure what type / make he has, but it is fitted where the alternator usually sits with that moved elsewhere.
I know that he has changed the electronics but not sure how or what other mods - fueling etc - hes made.
Mike

 

[944 man]

Id ditch the airbox, the antiquated airflow meter and inlet tract and the Motronic DME, replacing it with a MegaSquirt, TPS and MAP. This solves the fuel/ignition and space problems in one fell swoop.

 

[Diver944]

I'd say never modify a car when there is a faster version already in the range as done by the factory. It will cost you more in the long run, won't be anywhere near as reliable as the factory tested model and will be tricky to sell. The factory car will also probably have better brakes, suspension and cooling as standard to cope with the extra power.

Now if you already have the fastest model in the range it's a different story

 

[mr brightside]

ORIGINAL: A9XXC

Peter Empson on here has a supercharged 3.0 in a Lux body which is a VERY quick car, (it is also rather light!)
Not sure what type / make he has, but it is fitted where the alternator usually sits with that moved elsewhere.
I know that he has changed the electronics but not sure how or what other mods - fueling etc - hes made.
Mike

Yeah, you took the photos of it, Paul McNulty has posted a link at the top of the thread. It looks like the alternator has been moved down slightly and the charger is above it. Can you remember offhand whether the same belt was used to drive the charger and the alternator?

ORIGINAL: 944 man

Id ditch the airbox, the antiquated airflow meter and inlet tract and the Motronic DME, replacing it with a MegaSquirt, TPS and MAP. This solves the fuel/ignition and space problems in one fell swoop.

Aye, but that would be out of my price range! I could stretch to an intercooler though.

 

[mr brightside]

ORIGINAL: Diver944

I'd say never modify a car when there is a faster version already in the range as done by the factory. It will cost you more in the long run, won't be anywhere near as reliable as the factory tested model and will be tricky to sell. The factory car will also probably have better brakes, suspension and cooling as standard to cope with the extra power.

Now if you already have the fastest model in the range it's a different story

You're forgetting that modifying a lesser model gives it status as a sleeper![] I also prefer old school design, i'd rather own a 924S than an S2 although i concede that an S2 is a far superior car. A lot of people who get Porsches go for 944s which is why i've got a 924S, the round dials are a total design classic with those conical fascias.

As for selling it...well it's a car that i can't bring myself to sell. I keep thinking about another Mk1 Golf GTI or a Saab 900 16v but every summer i get in the Porsche and let the good times roll.

 

[944 man]

Wise words from Paul. MS isnt expensive though, in fact, even at the current miserable exchange rate its cheap. Sensors cost a few pounds and youll end up with a far more modern and able system (with more power from standard too).

When you look at the complication involved in adding a compressor, plenum/piping and drive belt into the engine bay; the MS is simple in comparison.....

 

[333pg333]

There also seems to be a plethora of S/C kits for 968s at the moment. Not sure how much you could transfer across, but there's plenty of reading material and viewpoints if you want to search it out. Mostly US based. Quite odd how much there is out there for such a small niche car. Seems to have developed a lot of rivalry in the various camps/websites too.
Of course if you can't make one work for the 944 motor you can always put in a 968 motor, supercharge and install it. Now that would be pretty slippery!

 

[Diver944]

IIRC Peters model is the original 968 offering from SpeedForce Racing in the US which was then adopted by Ninemeister in the UK. Lets face it the 924S/944/968 engine is externally virtually identical and the engine bay they fit in is all from the same chassis so anything can be made to fit with imagination

 

[Tam Lin]

ORIGINAL: mr brightside

You're forgetting that modifying a lesser model gives it status as a sleeper![] I also prefer old school design, i'd rather own a 924S than an S2 although i concede that an S2 is a far superior car. A lot of people who get Porsches go for 944s which is why i've got a 924S, the round dials are a total design classic with those conical fascias.

Aah, a kindred soul. The other advantage of a sleeper is that you can park it anywhere. A 924 doesn't stand out. To a lot of the sad car-thief/vandal/big-in-front-of-mates scum out there a 911 or a 944 S2 does.