Best MGP Inline-Six (1 Viewer)

[Grayscale]

Numbers have my interest. I'd like to see your reports of MPG. I really want to score some impressive stats while I squander quite a bit of my monetary and other resources dialing-in a junkyard engine. Forever doing something to make it just slightly better wont quit. I still can't believe that I've made it actually road-worthy - that is such a great feeling.

I just tallied-up mine and I scored 14.7 MPG combined town / highway.

 

[ceylonfj40nut]

Chasing ghosts son. Nothing is impressive on these. Smiles per gallon. Running engine is where it ends.

 

[Grayscale]

Chasing ghosts son. Nothing is impressive on these. Smiles per gallon. Running is where it ends.

There was a lot of effort, and even more attention, that went into the build, as well as discussion on this forum. Just seeing who's reading the numbers on the pump in relation to distance traveled.

 

[brian]

14ish

 

[rkymtnflyfisher]

Currently 12ish

 

[GA Architect]

Some MPG stats on my rebuilt 2F with a Sniper:

5.18.20 - "200 miles (10% highway & 90% back-roads), Fuel consumption was 14.4 gallons, Mileage = 13.89 mpg"
7.10.24 - "I'm getting 12.64 MPG with 100% country driving."

So, around 13mpg +/-

 

[71-CRUISER]

After 20+ years and several Cruisers I’ve never once been concerned with fuel mileage.

It’s a tractor engine after all.

 

[sogncab]

My 2F pretty routinely got 12-14mpg.
1fz gets about the same lugging around my 80.

I like keeping tabs on mileage. It's information that can be handy for range, or something going wonky if it drops off dramatically for no apparent reason.

 

[fyton2v]

11 to 14, depending on what I'm doing.

 

[rkymtnflyfisher]

I like keeping tabs on mileage. It's information that can be handy for range, or something going wonky if it drops off dramatically for no apparent reason

This right here.


I keep tabs as more of an indicator of the condition of the engine, I can tell when something is going wrong. Things as simple as a heavier weight motor oil will reduce mileage, cold weather, wind, gas from a BS station all play a part. I keep a log book of every tank of fuel, it allows me to see a trend of what's going on, sometimes I know it's weather related, or like my last drop in mileage, due to 15w-40 oil. The numbers are just an indicator for me, I'm going to drive it regardless.

 

[zerotreedelta]

Same...I just track every fill since you're standing there twiddling your thumbs anyway. It's a good way to catch anomalies.

Sadly, my latest anomaly is that my 10s digit is now stuck on my odometer...my last MPG was negative according to the math.

 

[Grayscale]

My stats were at altitude (6,800'-10,300'). Some compression braking. 14.7mpg. I'm using the larger (sea-level) jets that came with the carb. 4.11s, 28-inch treads.

I have ambitions of getting as much of the smog stuff back in service, and/or the motor looking or operating like a North American model again, which is better than all of those parts taking up space in storage. So, I'd want to use MPG as a crude measure of power-output, before and after.

Maybe it is a lack of acoustic insulation, but, when it sounds like a sewing machine, the throttle is always really responsive, and the block and carburetor are always warm. I know that cold really reduces fuel range, and it creates a roughness to the idle, like almost half (8mpg). My spark plugs foul easily, so I'm always thinking about congestion removal in the combustion chamber, and at the rings, with fuel additives - certainly reducing any pre-ignition causes can help power output. Perhaps, I should rebuild the original 2F that it came with, keeping it all numbers and vintage correct?

I'm fairly certain that a motor's life is cut short by running lean (burnt exhaust valves), or running rich (fuel dilution of crankcase oil, or inconsistent spark due to carbon fouling). Both conditions would likely reduce mpg. I'd consider MPG as good as a vacuum or compression test as an indicator of engine performance, especially if it was for sale, with or without the car.

 

[Engineer8000]

I get a little over 15 with the 3FE. But I drive it like I stole it so it probably could be better.

 

[Slapshot]

I get 8 mpg with a 327 4barrel carb V8!