STD Maintenance General Hmm... MPG not what i expected....

Hmm... MPG not what i expected....

Hmm... MPG not what i expected....

 
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MFSuper90
Budget Builder

1,533
06-06-2011, 07:18 PM #1
So in my 82 300D im only getting 20mpg, at most. I adjusted the valves, but have not got around to IP Timing. Not sure what gears i have, but i run around 3000 rpm at 70mph.

Any help is much appreciated,
Eric Smile

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-06-2011, 07:18 PM #1

So in my 82 300D im only getting 20mpg, at most. I adjusted the valves, but have not got around to IP Timing. Not sure what gears i have, but i run around 3000 rpm at 70mph.

Any help is much appreciated,
Eric Smile


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

dieselboy
Rotatin 5500 times a minute

680
06-06-2011, 07:31 PM #2
That sounds right for a stock car.
You should have a 3.07 diff.

-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.
dieselboy
06-06-2011, 07:31 PM #2

That sounds right for a stock car.
You should have a 3.07 diff.


-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.

led-panzer
Holset

541
06-07-2011, 06:48 AM #3
Also depending on your location you might have that low cetane crap fuel.

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
06-07-2011, 06:48 AM #3

Also depending on your location you might have that low cetane crap fuel.


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

willbhere4u
Six in a row make her go!

2,507
06-07-2011, 09:34 AM #4
25 mpg should be closer on a 300d turbo with average mixed city,highway driving

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
06-07-2011, 09:34 AM #4

25 mpg should be closer on a 300d turbo with average mixed city,highway driving


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

MFSuper90
Budget Builder

1,533
06-07-2011, 10:19 AM #5
The ol girl doesn't see alot of the highway, and i run offroad Wink

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-07-2011, 10:19 AM #5

The ol girl doesn't see alot of the highway, and i run offroad Wink


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

led-panzer
Holset

541
06-07-2011, 10:46 AM #6
Don't get caught Big Grin

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
06-07-2011, 10:46 AM #6

Don't get caught Big Grin


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

MFSuper90
Budget Builder

1,533
06-07-2011, 11:25 AM #7
The cops in southeastern ohio probably dont know the difference Big Grin
But i noticed other people getting alot higher MPG (30-35)
How do they achieve this?

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-07-2011, 11:25 AM #7

The cops in southeastern ohio probably dont know the difference Big Grin
But i noticed other people getting alot higher MPG (30-35)
How do they achieve this?


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

led-panzer
Holset

541
06-07-2011, 11:38 AM #8
(06-07-2011, 11:25 AM)MFSuper90 The cops in southeastern ohio probably dont know the difference Big Grin
But i noticed other people getting alot higher MPG (30-35)
How do they achieve this?

No I wouldn't expect them to once its in the tank, just getting caught filling. Unless you work construction or something and get it that way, the place by us where we get it has a big UNLAWFUL blah blah blah sign on the pump.

I don't know of anyone truthfully getting that kind of mpg unless its pure highway. I have to see what kind of gains I'm getting from the vnt, the tank does seem to be lasting longer though. Before the turbo swap I was getting 24 with mixed driving on summer diesel.

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
06-07-2011, 11:38 AM #8

(06-07-2011, 11:25 AM)MFSuper90 The cops in southeastern ohio probably dont know the difference Big Grin
But i noticed other people getting alot higher MPG (30-35)
How do they achieve this?

No I wouldn't expect them to once its in the tank, just getting caught filling. Unless you work construction or something and get it that way, the place by us where we get it has a big UNLAWFUL blah blah blah sign on the pump.

I don't know of anyone truthfully getting that kind of mpg unless its pure highway. I have to see what kind of gains I'm getting from the vnt, the tank does seem to be lasting longer though. Before the turbo swap I was getting 24 with mixed driving on summer diesel.


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

MFSuper90
Budget Builder

1,533
06-07-2011, 11:56 AM #9
Well i dont have to worry about getting caught filling up, we own a dairy farm and have a 3,000 gallon tank full of offroad for our equipment Angel
But how it the VNT working out for you? I wish i had enough knowledge about them to hook one up myself Confused

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-07-2011, 11:56 AM #9

Well i dont have to worry about getting caught filling up, we own a dairy farm and have a 3,000 gallon tank full of offroad for our equipment Angel
But how it the VNT working out for you? I wish i had enough knowledge about them to hook one up myself Confused


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

willbhere4u
Six in a row make her go!

2,507
06-07-2011, 12:03 PM #10
I've seen our 83 get 29mpg highway at 75-80mph would probably do better at around 70ish

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
06-07-2011, 12:03 PM #10

I've seen our 83 get 29mpg highway at 75-80mph would probably do better at around 70ish


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

led-panzer
Holset

541
06-07-2011, 12:22 PM #11
(06-07-2011, 11:56 AM)MFSuper90 Well i dont have to worry about getting caught filling up, we own a dairy farm and have a 3,000 gallon tank full of offroad for our equipment Angel
But how it the VNT working out for you? I wish i had enough knowledge about them to hook one up myself Confused

It's working out great so far, really pulls hard off the line now. I plan on creating a "how to" thread soon instead of just adding to my car profile. I'm still not completely done with the oil drain and a couple other things, I want it to be definitely a check in the win column before I go showing off Rolleyes

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
06-07-2011, 12:22 PM #11

(06-07-2011, 11:56 AM)MFSuper90 Well i dont have to worry about getting caught filling up, we own a dairy farm and have a 3,000 gallon tank full of offroad for our equipment Angel
But how it the VNT working out for you? I wish i had enough knowledge about them to hook one up myself Confused

It's working out great so far, really pulls hard off the line now. I plan on creating a "how to" thread soon instead of just adding to my car profile. I'm still not completely done with the oil drain and a couple other things, I want it to be definitely a check in the win column before I go showing off Rolleyes


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

MFSuper90
Budget Builder

1,533
06-07-2011, 01:00 PM #12
Does your pump have enough fuel to support it throughout the rpms?
Sounds completely awesome Big Grin

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-07-2011, 01:00 PM #12

Does your pump have enough fuel to support it throughout the rpms?
Sounds completely awesome Big Grin


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

led-panzer
Holset

541
06-07-2011, 01:14 PM #13
Not yet, I haven't touched the pump yet Blush

One thing at a time Big Grin

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
06-07-2011, 01:14 PM #13

Not yet, I haven't touched the pump yet Blush

One thing at a time Big Grin


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

dieselboy
Rotatin 5500 times a minute

680
06-07-2011, 01:30 PM #14
I get 33+ @ 65. I average 20 around town. (heavy foot and mountains)

-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.
dieselboy
06-07-2011, 01:30 PM #14

I get 33+ @ 65. I average 20 around town. (heavy foot and mountains)


-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.

MFSuper90
Budget Builder

1,533
06-07-2011, 02:17 PM #15
(06-07-2011, 01:30 PM)dieselboy I get 33+ @ 65. I average 20 around town. (heavy foot and mountains)

How? Tongue

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-07-2011, 02:17 PM #15

(06-07-2011, 01:30 PM)dieselboy I get 33+ @ 65. I average 20 around town. (heavy foot and mountains)

How? Tongue


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

willbhere4u
Six in a row make her go!

2,507
06-07-2011, 02:49 PM #16
65mph is just about the best speed for milage

I had a 1966 200d and the owners manual said it would get (60mpg @ 30mph) 50 mpg @ 40 mph (40mpg @ 50mph) and 30mpg @ 60mph +

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
06-07-2011, 02:49 PM #16

65mph is just about the best speed for milage

I had a 1966 200d and the owners manual said it would get (60mpg @ 30mph) 50 mpg @ 40 mph (40mpg @ 50mph) and 30mpg @ 60mph +


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

dieselboy
Rotatin 5500 times a minute

680
06-07-2011, 02:51 PM #17
Efficiency. Get air in and out without the engine working to do it.

I actually have no idea what my timing is either. I've never checked it.


-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.
dieselboy
06-07-2011, 02:51 PM #17

Efficiency. Get air in and out without the engine working to do it.

I actually have no idea what my timing is either. I've never checked it.


-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.

 
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