Diesel Roadrunner

http://www.dieselarmy.com/news/video-plymouth-road-runner-gets-an-unlikely-heart-transplant/?utm_source=rss&utm_medium=rss&utm_campaign=video-plymouth-road-runner-gets-an-unlikely-heart-transplant

Diesels in everything?

"Running on a 50/50 mix of diesel and cooling oil, the engine isn’t exactly a screamer with 101 horsepower and 205 pound-feet, but it does return admirable fuel economy at 25 mpg."

Not terribly impressed.

The diesel fad has never appealed to me. Where I live, we have an annual "bro-dozer festival" with all the diesel douche-baggery one town can stand at one time in one place. The south end looks like a smoking war zone with those idiots wreaking havoc in various ways.

Guess I'm saying "Get off my lawn....."

Interesting swap to say the least. Kinda stumped after that on what to say...

that poor car needs rescued and late model hemi swapped. 4x the power and the same mpg

Diesel Roadrunner.

https://www.youtube.com/embed/mpVuOzFmrBE

4bt is one thing...but a naturally aspirated 3cyl diesel that makes barely 200ft lbs of torque. Why is all I have to ask

He did say he's working on fixing the naturally aspirated part of that. Then again, a 2 stroke Detroit isn't quite naturally aspirated. It has a roots blower and literally can't run without it. It just doesn't build any useful boost.

Yeah isn't the "supercharger" on the exhaust side anyways? More like a giant scavenger pump than anything.

Yeah, it's literally used as a scavenging pump. It's on the intake side though, not the exhaust side.

It's used in place of using the crankcase to pump the air into the cylinder.

Tradeoff the expense of the blower for the need for things like reed valves, complex crankcase design (ever see the inside of a Mercury Marine 2-stroke V6?) and the need to mix oil in the fuel.

I wonder. Does Diesel have as much lubricity as oiled gasoline? I'm asking out of curiosity and totally not because I keep getting ideas in the back of my mind for running a rotary dual-fuel on Diesel or kerosene.

In reply to Knurled:

I would hazard a guess that diesel would be more lubtastic, being that it is basically a thin oil.

Ultra low sulfur diesel isn't nearly as good a lube as the older stuff was. I think there's additives to fix that though.

Diesel 4x4 road runner?

https://www.youtube.com/embed/Uoi95SBE2wM

https://www.youtube.com/embed/cnrbWoPNi70

rslifkin wrote: Ultra low sulfur diesel isn't nearly as good a lube as the older stuff was. I think there's additives to fix that though.

Yeah, 2 stroke oil ~1oz/gallon, also bumps the viscosity up to that of the old stuff.

In reply to BrokenYugo:

I premix about 2oz/gallon. Part of why the Voices want to run dual fuel would be to save money on two stroke oil. The oil costs 31 cents/gallon of fuel for the cheap stuff, 60cents/gallon of fuel for the good stuff, running on a separate tank of Diesel for highway cruise starts to make sense at this point even if it costs significantly more than (raw) gasoline. Rotaries will run on Diesel and other "heavy fuels", and rumor has it that when Mazda was running in IMSA, they were running on 80 octane fuel that was a mix of racing fuel and kerosene...

I really like this swap. It sounds quick enough for driving the snot out of in otherwise normal traffic, and it looks simple, and it sounds kinda neat. Good enough!!

It should probably be mentioned that the lubricity issues with ULSD have allegedly been solved.

I'm assuming we're talking about a dorito motor with the factory oil injection pump disabled? Based on how little oil (and oil not really meant for that job at that) I'm led to believe those things metered out, I'd guessing you probably wouldn't see worse wear from burning just pump diesel, but don't quote me on that.

In reply to Fueled by Caffeine:

I thought that's what this was going to be about

You should have heard the purist's heads explode when this thing debuted. I dig it.

I prefer the 6bt swapped charger