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MG MGF Technical - Eaton supercharger by Mynheer

Came across the following engine conversion kit whilst surfing: http://www.mynheer.co.uk/engine.html

Not sure as to the engineering integrity of the conversion, but the cost is way, way less than the 2000 quid that Turbo Technics want for their supercharger conversion - with a cost (I am told) of under 500 quid...

The Eaton supercharger looks to be mounted rather high on the intake manifold - so some modifications to the rear bulkhead and possibly the bootlid may be rquired to fit it.

Anyone feeling brave enough?
Rob Bell

Are you sure you haven't missed a zero off the price?
Surely the list of parts (MEMS, inlet manifold etc etc) would cost more than 500 quid without the charger?

Darren.
Darren

I haven't looked into it to be perfectly honest - best to check with Mynheer directly (I got the price info second hand so could, quite easily, be utter *@%$^£*s ;o)
Rob Bell

Er, maybe I'm missing something too, Rob, but in my literature from TT they want £5,800 for the conversion.

That's why I'm chewing it over...

...and praying for miracles from a Daytona!:0))
chris

Painfully expensive isn't it (spot the typo - meant to write 5k not 2k, but then that figure's still about a grand adrift).

Chris, the Turbotechnics conversion is well engineered, and the installation is very tidy (with a neat installation of an intercooler radiator adjacent to the main coolant radiator - nice). Certain things have not been addressed and worry me slightly - such as engine block / liner stability, and water and oil cooling with the potential implications that bings with respect potential for HGF. That's the bad news. Good news is that the installation has been continuously refined (mainly thanks to interest shown by Elise owners - and the abuse they give their cars on the track) - and is now widely regarded as a pretty complete and reliable conversion. I have to confess that my personal experience with this kit is very limited - so can only go on what others have said. Overall, it appears that customer support provided by TT is very good - and that's what you want with a conversion such as this.

I too would consider this option very seriously - and if I did go down this route, I would fit an oil cooler, and I would modify the cooling system in the manner pioneered by Simon Scutham and Carl (and detailed on Dieter's web site http://www.mgfcar.de/thermostat/Water_System_Mods.htm)
Rob Bell

Darn, have air conditioning :(
it'll have to be a turbo
Kingsley

Or the Mynheer Eaton supercharger Kingsley? ;o) It mounts in a completely different place.

Mind you, it all looks a tad Heath Robinson...
Rob Bell

I thought you could only mount either side of the engine?
gearbox one end AC compressor other end?
Where does the supercharger go?

or is there something i'm missing?

Nearly the same power levels 190bhp ish can be gained from different valves, cams, heads, manifolds etc
Heck a whole 190 BHP VHPD engine wouldn't cost much more than a supercharger


Kingsley

I'm venturing into an area I'm not too knowledgable on, but here goes.

Is it not the case that a supercharged car has the increased power band throughout the rev range.

The VHPD engine generates 190bhp at peak revs but has a less powerful band at low revs. Lumpy even?
Chris

Have a look at the styling section under Centuri
http://www.mynheer.co.uk/styleindex.html
JFK

>>Have a look at the styling section under Centuri
http://www.mynheer.co.uk/styleindex.html


Oh dear :(
Kingsley

Chris, spot on. Supercharger makes much more torque throughout the rev range, whilst the 190 VHPD head is significantly more peaky, with less available torque. Which is better? Difficult one to answer, but a relatively heavy car like the MGF (as compared to the Elise for example) would benefit more from having a more torquey engine.

Mynheer appear to be mounting the Eaton supercharger on top of the inlet manifold. The drive belt is worryingly exposed - looking at the picture - with drive taken from what looks to be one of the cam pulleys (???) I don't think I'd be keen to try it TBQH (to which read: "Wouldn't touch it with a barge pole"). However, in principle, it overcomes your problem with the A/C in that the A/C compressor mounts on the same side as the alternator - on the other side of the engine to where Mynheer have perched the Eaton 'charger. In principle mounting the supercharger in this way may confer certain advantages... I'm just not convinced that this is thoroughly thought through or not.

I could be wrong, but would you trust a kit from someone who thinks that the Centuri kit is a good idea??? ;o))
Rob Bell

I have made enquiries about price ect.
The kit is not available at present due to some parts being unobtainable.They are developing a turbo charge kit which they claim will give more power at a cheeper price.
Paul

>>I could be wrong, but would you trust a kit from someone who thinks that the Centuri kit is a good idea??? ;o))

Good point ;)
Kingsley

Hi, I just scanned the post and can't see any price. Have prices been released?

Cheers RichieR
RichieR

RichieR, what happened to NOS?
got it already??
Hanah Kim

Hi Hannah,

I had the system in with 50 jets car went like a rocket at about 5 secs to 60 and 13.8s 1/4 mile however the weak clutch was doing my head in so decided on uprating the clutch.

At the same time decided to up-rate and strengthen the engine with porting, forged pistons, seals, rings, etc as this will allow me to use the 100+ lbft jets. Performance then should be astounding at about 4ish secs to 60 and under 13 1/4 mile (FYI this will beat a STD 911 Turbo)

I'll let you know how things progress.

Cheers RichieR
RichieR

200bhp quoted in the e-mail I received from Mynheer! Not sure that an engine that's done 150K, which mine probably will have done by the time the turbo charger is availble, would take that much power increase. :(

Ralph
Ralph

Shouldn't be a problem per se Ralph - as the engine would require extensive mods to be compatible with a turbo - not least a modest reduction of compression ratio to enable higher-than-atmospheric pressure intake charge.

The BBR GTi web site gives a clearer indication of the work required to get a turbo conversion to run reliably.
Rob Bell

This thread was discussed between 25/07/2002 and 01/08/2002

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