60 seires 515 hp

[jack14r]

I agree with Jon but there is something that we cannot change,as the coaches have gotten more slides and more marble/granite etc. they have gained as much as 8,000 pounds in weight,we must pay for that in fuel mileage no matter how much or little we use our right foot.I don't think that my coach will ever get the fuel mileage that Jon's coach will just because of the difference in weight.

[merle&louise]

There is a guy in Lufkin, TX who drills out the return fuel line orfice and increases the size of the opening from .008 to .009

Supposedly, this increases the fuel economy by 1 to 1.5 mpg!

A fellow POGGER told me about this. He has done it on his coach and now gets the improved fuel economy.

I was going to do it but the tech couldn't reach my return fuel orfice.

[johnklopp]

I agree with Jon. The only method to increase fuel mileage without emptying your coach is to get your foot out of it and slow down. Playing around with the fuel metering orifices puts your engine at risk. If it was that easy, the engine manufactures would have done it. Consider the consequences, a ruined engine 20K? or the EPA knocking at your door.

[travelite]

I'm trying to find the specs but my wife is pushing me out the door. I wanted to give the fuel pressure specs for idle, no load max rpm, and full load max power. Detroit Diesel is very specific about these fuel pressures. Opening the return fuel line orifice will certainly drop the pressures. Remember fuel is a lubricant and a coolant.

[merle&louise]

Kind of glad I didn't do it! Sounds like a bad deal. Ouch!

The good Lord must have been watching out for me.

[phorner]

If you are concerned about fuel economy, buy a Prius, not a bus.

There is absolutely nothing that's going to get your 50,000 pound vehicle, that's shaped like a brick, to sip fuel.

Just drive the darn thing and enjoy the ride

[terryweber]

If you are concerned about fuel economy, buy a Prius, not a bus.

There is absolutely nothing that's going to get your 50,000 pound vehicle, that's shaped like a brick, to sip fuel.

Just drive the darn thing and enjoy the ride

thanks terry

[Kenneth Brewer]

I agree with Jon. The only method to increase fuel mileage without emptying your coach is to get your foot out of it and slow down. Playing around with the fuel metering orifices puts your engine at risk. If it was that easy, the engine manufactures would have done it. Consider the consequences, a ruined engine 20K? or the EPA knocking at your door.

What he said. Thank you.

[terryweber]

There is a guy in Lufkin, TX who drills out the return fuel line orfice and increases the size of the opening from .008 to .009

Supposedly, this increases the fuel economy by 1 to 1.5 mpg!

A fellow POGGER told me about this. He has done it on his coach and now gets the improved fuel economy.

I was going to do it but the tech couldn't reach my return fuel orfice.

thanks terry

[terryweber]

There is a guy in Lufkin, TX who drills out the return fuel line orfice and increases the size of the opening from .008 to .009

Supposedly, this increases the fuel economy by 1 to 1.5 mpg!

A fellow POGGER told me about this. He has done it on his coach and now gets the improved fuel economy.

I was going to do it but the tech couldn't reach my return fuel orfice.

thanks terry