I Leak Oil
Expedition Leader
Doing it just because you want to.....good on ya man!
School me on diesel fuel systems
- Thread starter Mrk1
- Start date
FellowTraveler
Explorer
6.2 diesels all are good, early non turbo 6.5 good, early turbo 6.5 not so good May 1999 and newer 6.5 td is a NAVISTAR and the best. Mechanical pumps are every reliable providing you use something to lube the system so the low sulfur does not destroy your injection pump, injectors or lift pump I use 2 stroke oil added to the fuel. As for a lift pump keep it simple go w/block mounted unit not chassis electric. Cetane boosters mostly solvents cause wear! In extreme sub zero temps for long periods jet fuel mixed w/2 stroke is best.
DividingCreek
Explorer
why would anyone would strive for a non turbo diesel ? Diesels literally come alive when turbocharged. You can go with half the displacement and weight if you utilize a turbo diesel.
on another note not all diesels have injection pumps. The 300hp engines in my boat have no injection pumps or computer controls.
on another note not all diesels have injection pumps. The 300hp engines in my boat have no injection pumps or computer controls.
David Harris
Expedition Leader
That's pretty good. I had an M1009 Blazer with the J code 6.2 and it averaged under 20 a gallon on the road. In my 3.9 Range Rover, I have achieved 360 miles on a tank on the highway. When you factor in the greater cost per gallon of diesel, the numbers come closer from an overall cost standpoint.
aka rover
Adventurer
I would agree that putting a diesel in for just fuel savings is not a economic reality with the cost of the motor and the cost of the swap even if you do it yourself. The reason I swapped in a diesel to my series was the simplicity and the longevity and durability ,..and I drank the kool aid . I plan on doing a few more conversions just because I can 
Antichrist
Expedition Leader
I was including winter blends as treated. I was trying to keep it very broad since there are so many detail variations.
Antichrist
Expedition Leader
Interesting. What engines are they?
As for turbos, yeah. And they don't really add a significant amount of complexity. I'd much rather have a turbo that electronic fuel shutoff.
to me its either, small displacement with a turbo or large displacement NA. The 6.2 obviously fits the second
David Harris
Expedition Leader
Even the 6.2 really needs a turbo for all around use. I used to own a 6.2 Suburban and drove it all around the mountains in Colorado. It was a real dog at high altitudes, belching black smoke across the traffic jam forming behind me. Drove fine on the flats though.
David Harris
Expedition Leader
Right. That's the thing with the diesel swaps: Either you have to go with less power, like a 300 Tdi, 6.2, to keep from having to mod the rest of the drivetrain and keep the cost down, or go with a bigger/powerful motor and be forced to mod everything to stand up to it. The same goes for alternative V8 swaps. The bigger the motor, the less the fuel mileage advantage. Also, keep in mind that when you load the Rover up for a trip, the lower powered diesels will be slow vehicles, especially if you have air conditioning.
redneck44
Adventurer
6.2 GM has 40 hp and around 40lbft torque more than a standard 200 tdi engine, a minor fuel pump tweak and your nearly equal.
200 tdi is a bombproof engine, a lot lighter and designed to fit.
Availability is your problem on your side of the pond though.
If you want all the fun of doing an engine swap then drop a cummins in there.
200 tdi is a bombproof engine, a lot lighter and designed to fit.
Availability is your problem on your side of the pond though.
If you want all the fun of doing an engine swap then drop a cummins in there.
DividingCreek
Explorer
GM 8.2 liter 4 stroke v8's. Known as the "Fuel Sipper Series". Injectors are plunger operated off of the cam. 300hp @ 3000 rpm ea. Usually running after less than a 1/2 revolution after hitting starter button.
Do some reasearch on the 6.2 before you buy one. If I remember right, any manufactured before mid 85 were considered not worth retrofit or rebuilding do to inherent flaws.
Do some reasearch on the 6.2 before you buy one. If I remember right, any manufactured before mid 85 were considered not worth retrofit or rebuilding do to inherent flaws.
Last edited: