Supercharged Diesels

[smo]

Who makes a supercharged diesel (apart from the LR TDV8) engine?

Alternatively how tricky is it to supercharge a "normal" engine instead of turboing it?

[mark.yellow.series.3]

depends on the engine and how much workj you want to do.
typically you would need lower compression pistons.

[smo]

I shouldnt have thought that supercharged needs lower than turbo's - but yes over NA they need lower compression.

I'd like to go down the pre-supercharged route but canna find many (any) SC diesels :(

[iomlr]

merc? the E class has some good torquie engines!! 3.2 supercharge diesel! sounds good!

[mark.yellow.series.3]

I shouldnt have thought that supercharged needs lower than turbo's - but yes over NA they need lower compression.

I'd like to go down the pre-supercharged route but canna find many (any) SC diesels :(

sorry, year, low compression pistons in a N/A engine.

[Thrasher]

LR don't make a supercharged diesel ... it's just a twin turbo V8 ..... not supercharged - there is a big difference.

Superchargers and turbos are different.

[Eeyore]

The VW Race Taureag is a supercharged diesel (2.1ltr IIRC) - might provide some interesting pointers. It's outputs are about the same as Mitsis 4ltr v6 in the Paj Evos.

A lot of the big industrial diesels are supercharged too. And often two stroke, so that might not help!  :?

Cheers
 8)
Eeyore

[smo]

LR don't make a supercharged diesel ... it's just a twin turbo V8 ..... not supercharged - there is a big difference.

Superchargers and turbos are different.

Yes you are correct, for some daft reason i was thinking the TDV8 was supercharged....but thats the petrol v8, as you said the diesel is twin turbo.

Superchargers and turbo's are indeed different, but not by a huge ammount at the end of the day they both provide forced induction, just different ways of getting it and different characteristics from each source.

[Eeyore]

Confession time, I've been chatting with a few folk about super-charging a 300tdi. It seems highly feasible using some very simple bits and a bit of well-applied thought.

Needless to say, research is ongoing

.....but sourcing the blower is remarkabley easy.  

Cheers
 8)
Eeyore

[smo]

What blower are you looking at using eyeore? Is it somthing like the one from a SC mini?

[Range Rover Blues]

Just to add my 2 penneth, 'Torbo' or 'turbo charger' is a shortening of 'turbine supercharger', for that's all it is.

the reason they work differently is that Tubos are gas-driven, so when the engine is working hard but slow the turbo will spin up, eventually, wheras a supercharger is almost entirely dependant on engine speed.  They are highly suited to constant-speed units and not qite so good in sports cars.  Several rally teams had varying success with super/turbo charge combinations to eliminate turbo-lag.

[Eeyore]

What blower are you looking at using eyeore? Is it somthing like the one from a SC mini?

I'd be lying if I said the Easton M45 hadn't crossed my mind.  

There's a few keep cropping up on Ebay where folk swap 'em out for something bigger (death wish, some people). The main thoughts at the moment are plumbing it in suitabley in the induction system, getting the fuelling right, and how to stop the bottom end shaking itself to death. Getting a spare engine could also be a plan to strip and try re-works on.

Still very much in the conceptual phase and dependent on a few other projects first (and cash-flow - as always!).

Cheers
 8)
Eeyore