Just thought I would upload a pic of a turbo setup off of a 340 cu inch straight 6 we have. Max RPM about 5000. Currently about 70 PSI on meth. It's not pretty and no I didn't build it. The WG makes me cringe every time the hood is off. The exhaust pipe isn't any better out of the last turbine.



Not sure that is going to bolt up on the BP.

 

10 billion RPM's later when you finally hit full spool...........

 

I think they spool it under a light load after launch at about 4500-5000 but it will pull down to about 3000 before they sneeze on the current application.

 

what engine?

 

Hercules 3400 I think. The old blocks are basically the same. Used for military and implements. This particular application is in a Cockshutt 570 Super.

Used in anything from a personell carrier back in the 60s to passenger busses more lately with turbo EFI.

Runs in a class similar to these.

 

I'm confused by the pic. Is that a sequential setup?

 

not sequential, compound.
Or I guess you would call it compound-sequential

 

RW, you work on the tractors? We all just went to a pull a few weekends ago in murfreesboro TN. Compunds is the correct term... Common in the diesel world. Saw a setup almost exactly like that down at Garmons diesel performance/transmissions south of Atl on friday, they had welded both housings together where they are bolted in the pic above lol. That's why I was curious as to what it came off of. Looks like cummins bolt pattern on manifold but Ive never seen a mani like that one on a truck. My good friend with a common rail is currently putting a 71mm and a 98mm on his truck, I think we may try and mount them similar to this.

 

I don't turn the wrenches on this one much, when asked to help. I installed the datalogger and review after every event.

I call it staged, but I suppose compound is correct. One feeds the other. Diesels many times run three compound for boost pressures in the 120-160 PSI range. Now many meth guys are running two small turbos both feeding a larger turbo for the second compression stage. This is an OLD tractor that has been pulling since the 60's in a continual evolution. Pretty cool to know they used to run both NA and turbo on the same day with a carb and quick release fittings on the turbo.

You likely would never see one of these engines anywhere today, so I would not imagine you would recognise the manifold.

Runs Kinsler mechanical fuel injection with pressures in the 140's depending on load and RPM. 2 stage mechanical injection. Some are now 3 stage I think.

I don't know much about the entire sport but have been around this tractor since a kid. Still kills me to know that when they end a run and shut the TB all that air has to back up out of the turbos... OUCH. Talk about compressor surge. I still haven't convinced them to add a BOV. I almost had them convinced to add a water to air IC but they were outlawed shortly after I started bugging them about it. Air temps on the second stage are a little above 400 deg F.

I can't remember the turbo sizes but I think one is like a A9-90 or something and one started out as an Schwitzer S-4D. Both are custom.

 

that first tractor is the cause of global warming lol

 

Took some video and pics today of the engine put together.





Video of it running.

He tried to load it with the clutch but only had 4 PSI on the datalog. You can see clutch dust fly out on the original video.

The first charger on the intake side has been changed and I forgot. It is a Holset HC5??.

And YES it drives me CRAZY to look at the exhaust pipe and wastegate pipe elbows.

 

 

That's ok..... That tractor has paid for itself many times over... It's 1950's tech for the most part and still runs at the top of the pack of the light class.

Looks a lot better with a hood...

That guy does remind me of some of my neighbors...