POS DD500

[Bandit102]

Why does everyone love these Detroits? My 97 FL Classic has one (500hp) with a 10spd. 4.7 miles per gallon is average. Have a friend with a 400 N14 that can blow my doors off up a hill and get 6.5 mpg doing it. 100K on an inframe o/h, 1 gal. of oil per 2,000 miles, pushes the dipstick 2 inches out of the tube. (Yes, the draft tube is clear) Oh, but it is operating normally. Thats more oil than usual, but everyone I've taken it to says its running normally.

[yoopr]

Your friend probably has a 13 speed
Ten speeds, unless you're on the Flats, when you're climbing you're either over-revving or Lugging.

[Bandit102]

His is a 10 as well. Dont know the rears, tho. I can smoke him after a while on the flat ground, that would explain him being faster on the hills. I guess. This Detroit just doesnt seem right to me. Maybe it is.

[bob h]

Why does everyone love these Detroits? My 97 FL Classic has one (500hp) with a 10spd. 4.7 miles per gallon is average. Have a friend with a 400 N14 that can blow my doors off up a hill and get 6.5 mpg doing it. 100K on an inframe o/h, 1 gal. of oil per 2,000 miles, pushes the dipstick 2 inches out of the tube. (Yes, the draft tube is clear) Oh, but it is operating normally. Thats more oil than usual, but everyone I've taken it to says its running normally.

#1... everybody doesn't love them. I loved them when I worked as a tech at the dealer.

The s60s that I saw "doing well" were 430s and 470s, they made decent power and excellent fuel mileage. Any 500s I worked with were fuel pigs, power complaints were fewer with the 5 though.

If you are using a gallon per 2000.... your rings probably didn't seat from the in-frame. Is there slober (black, oily substance) beneath your exhaust manifold or between the exhaust manifold sections?

[mrpersons]

Might want to check your intercooler for leaks. That seems to be the #1 cause of poor performance with detroits in Frieghtliner. How's your boost pressure looking under load??

[Bandit102]

It does, It does! It slobbers oil out the exhaus pipe coming off the turbocharger, down the frame, onto the leafsprings and down onto the ground while idling. Nasty darn Detroit. And you should see her smoke when you leave a parking lot after idling at 1000rpm for a couple of hours. Move over James Bond!!!

#1... everybody doesn't love them. I loved them when I worked as a tech at the dealer.

The s60s that I saw "doing well" were 430s and 470s, they made decent power and excellent fuel mileage. Any 500s I worked with were fuel pigs, power complaints were fewer with the 5 though.

If you are using a gallon per 2000.... your rings probably didn't seat from the in-frame. Is there slober (black, oily substance) beneath your exhaust manifold or between the exhaust manifold sections?[/quote]

[bob h]

It does, It does! It slobbers oil out the exhaus pipe coming off the turbocharger, down the frame, onto the leafsprings and down onto the ground while idling. Nasty darn Detroit. And you should see her smoke when you leave a parking lot after idling at 1000rpm for a couple of hours. Move over James Bond!!!

#1... everybody doesn't love them. I loved them when I worked as a tech at the dealer.

The s60s that I saw "doing well" were 430s and 470s, they made decent power and excellent fuel mileage. Any 500s I worked with were fuel pigs, power complaints were fewer with the 5 though.

If you are using a gallon per 2000.... your rings probably didn't seat from the in-frame. Is there slober (black, oily substance) beneath your exhaust manifold or between the exhaust manifold sections?

[/quote]

are you sure it's oil? ... wipe it off the block with your fingers and then rub them together, and then pull your fingers apart... is it sticky??? or smooth and slippery? sticky indicates fuel, slippery is oil.


I would expect that you're gonna pull the pistons to hone the glazed cylinders. IMO.

some dealers will do a hard-ass dyno run to try and brake glaze, but it usually doesn't work .................................................. .................................................. .................................................. .. as i've said before --- drive it like you hate it... or, it won't break in properly!

[Bandit102]

Might want to check your intercooler for leaks. That seems to be the #1 cause of poor performance with detroits in Frieghtliner. How's your boost pressure looking under load??

Not sure about my manifold pressure. I dont have a mash meter in this truck. Pyro doesnt work either. (Big surprise there, huh?)

[bob h]

It does, It does! It slobbers oil out the exhaus pipe coming off the turbocharger, down the frame, onto the leafsprings and down onto the ground while idling. Nasty darn Detroit. And you should see her smoke when you leave a parking lot after idling at 1000rpm for a couple of hours. Move over James Bond!!!

[/quote]

make sure the oil leak don't come from the turbo oil supply line, or any source other than the mainfold itself... any decent ddc tech will be able to guide you from there...

SO, is it oil or fuel!!!!!!!!!!!!!!!!!!!

yeah, I figured it was oil

[Bandit102]

I'm gonna run this Detroit till it does something really stupid. Then I'm gonna buy a big boat, cause I already got the anchor. Found and bought a wreched FL Classic with an ISX @ 525hp and an 18 spd. trans. Think it'll be an easy swap??? Anyhow, once I get the cummins in here, I'll be showin those CAT/Pete guys a thing or two!!!!

[mrpersons]

bandit You're in for fun switching out that engine into your chassis!!

I did a similar thing several years ago with the Classic I'm currently in now.

I bought this truck with a wiped out hurricane damaged body with only 100k miles on it for cheap! I then bought a complete body also for cheap. The fun was tranfering the wireing harness from one to the other!

I stripped the new body, which was setup for Detroit, down to to near the last nut and bolt, repainted it, then took all the harness from the wrecked body, and installed it, along with a new interior to match the chassis, which was/is Cat powered. I did this so the harness would match the engine/chassis/body combination.

While the engines are essentially "stand alone" in the way the computer is configured, matching different powered ones to the harness and getting everything to work correctly will be tough to say the least. That's why I changed over the complete harness.

Mine worked great, but it was a tedious job pulling the whole dash apart to do it. Take lots of pictures as you pull the one out of the wreck, so you'll know for sure how it goes into you're present one.

Fitting the engine/trans should be just a matter of pulling one out, mounts and all and intalling them exactly as they were in the wrecked one.

Good luck! This project took me about a year to do, but worked out well for me. Had less than $22k in it, 3yrs later, still going with no problems at all.