inline6power

i thought people were saying on a thread 2 days ago about how you could not run a supercharger on a diesel? well i just found this in the members section and it looks like an actual kit and not just something someone put together. what do you guys thinK?

derek840378

turbos are WAY more efficient on a diesel

cummnz4x4pwr

That is PDR's prototype that they came up with a couple years back, never went into production... they were thinking about offering a kit but never got enough of a response. and it actually lost power over just an hx35. the bottom end response they said was just short of amazing.

Jake

qmcdt

The old two stroke detroit diesels were all supercharged. It was the only way for them to get air flow (at all) and scavenge the cylinders properly. Later when they added the turbos to them, and the engine speed got high enough that the turbo was out flowing the supercharger, the turbo would flow around the supercharger. I can believe the bottom end must be through the roof on that thing. They probably geared it to make 15+ lbs boost at idle.

apwatson50

Turbos are more efficient then belt driven intake air compressors on any engine. The only problem is "turbo lag" but with a properly designed system it will be minimized. But it also depends on the application.

RustyJC

Not to pick nits, but the devices on the 2-stroke Detroits (-53, -71, -92 series etc.) were scavenging air blowers, not superchargers.

Rusty

Gotlift01

The supercharger idea was to help with the turbo lag.......instant boost off the line and then upper to mid range is when the turbo was supposed to do it's thing......been kinda cool if it worked!!

Could you imagine having the whine from the supercharger and then the whine from the turbo............ahhhhh that'd be the life!!


~Nick

derek840378

the supercharger gets in the way of intake air at higher rpms. if you could have a supercharger and turbo w/ a way to bypass the supercharger at a certain rpm, that would be the cats meow

RustyJC

That's doable with $$$$. An electric clutch (similar to an A/C compressor clutch) to shut off the supercharger at high RPM (eliminating its parasitic load) with a butterfly valve and bypass to route the turbo output around the supercharger at high loads.

Rusty

Charlie8301

I can't find the thread that went with this pic but I think it was making 10 psi at idle and 90ish at wot


Randy

twistingawrench

that thing is realy EDIT off looking!! absolutly awsome..

Gotlift01

Good grief that thing looks EVIL!! I wonder if they could even get the hood back on there.....looks like it sits really high......either way that would be SWEET



~Nick

Red3quarter

YEah older detroits were supercharged, and so are EMD engines in locomotives. They actually refer to it as a Roots Blower. On the EMD's they are geared to the engine. All an EMD is, is a very large screamin Detroit, and its 2 stroke too! At work we refer to them as blowers or superchargers.

boostjunkie1

BMW has a Turbo Kit that they offer on the Mini Cooper that bolts in with the Factory Super Charger. This takes power to 345hp at the wheels!!!!!! This is used like a Twin Set-up on our Cummins. The seperate chargers compound the air to make the total package more efficient. The stock Mini S makes around 140hp to the wheels.

RustyJC

I've worked for an engine manufacturer for 32+ years with 28 of those in technical management. We build both 2-cycle and 4-cycle industrial engines. 2-cycle industrial engines use scavenging air blowers - they are not supercharged (a word that has a very specific meaning to engine designers) unless a device such as a turbocharger supplements the scavenging air blower.

Rusty