D1 300tdi Owners - Avg MPG's?

dcwhybrew

Adventurer
dcwhybrew - thanks for the comparison chart. Right now, I think I'm closer to $29-30 a day per round trip commute so maybe the 16 mpg was a one horse wonder. My main concern right now is a relatively rust-free donor vehicle and I might have located one. Here's my rough costs comparison: Donor D1 - $4000, complete 300tdi kit with autobox - $4000, installation - $3000 = $11,000. Sell D2 with 18" wheels - $7000, sell 4.0 & autobox from donor - $1000, sell 2003 D2 16" wheels with almost new General Grabber AT2's (although I might keep the tires for the TDI truck) - $800 = $8800, difference $2200. Even if additional costs meant the price went up by 50%, it would still be around $3500 to move into a truck that gets between 60-70% better fuel economy. I will learn about maintaining it but I do have an excellent mechanic that is familiar with these engines. Please, tell me if I'm missing something here.
I've even been researching LPG or natural gas conversions for the D2 but these are more money - $4000 to $5000 but Enbridge Gas will install vehicle fueling stations at home or work locations as part of a rental contract.
I don't want a beater, I've been that route and extra insurance, repairs & maintenance ate into the fuel savings. I want to drive a Land Rover that can still go offroad or camping on week-ends without breaking the bank.
Maybe I'm asking too much :)

So the D1 you are buying doesnt have the Tdi conversion completed already? I think you're being optimistic. You really need to check around on the conversion cost, unless you are doing it yourself. I was quoted $10-$13k by multiple people to covert my 91 Range Rover. It will cost you about $5-6K to aquire the engine and transmission combination. That may or may not include the necessary rebuild. It doesn't make sense to install a 300 tdi with out rebuilding it first while it is out of the truck. Remember, those are old engines and most will have no less than 100k miles.

Additionally, you really ought to go find someone who has one and ask them/pay them to let you drive it. My mechanic in Las Vegas, Bill Goodman (who is from the UK, master certified LR mechanic, and plenty of experience with the Tdi's) said I would hate the power. The Rover V8 is anemic, and he said the Tdi's were "gutless." Actually his recommendation was a Chevy 350 conversion. That will give you regular unleaded gas prices, cheaper parts, more power and better gas mileage.

So, my opinion, you wont be able to justify the conversion financially (paying for it with cost savings). If you want it, you just have to do it because you want to and you have the cash. Otherwise you're going to be severly disappointed. I still think you need to keep the D2 and drive the hell out of it. You can drop in a new 4.6 cheaper than what you are considering. Or buy the D1 and drop a Chevy 350 in it...:sombrero:
 

hks3sgte

César Gómez
Yes! In Oklahoma, we produce our own oil....LOL Seriously, we do have very good gas prices here. I took my daughter to Disney World last week and I had sticker shock at the pump, especially in Georgia and Florida. I used to live in southern NV and Arizona, so I am familiar with gas prices out there too...:Wow1:


Southern California has oil everywhere! But we don't see the savings...

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vtrover

New member
I put a 300 tdi in my '91 Range Rover last winter, also put the R380 in. I average around 26 mpg with 2" lift and 235/85 tires, seems pretty good to me compared to the V8. I didn't base my decision on economics, I just like diesel motors, and they are dirt simple compared to the V8. The power doesn't seem too bad to me and there are ways to get more, but it moves along pretty good even in the mountains, and it's really fun to drive. I think it would be hard to find a complete kit for 4k, I bought a front clip of a disco. 1 and took all the parts from it, which I recommend, there's lots of little things that could kill your budget.
 

DoKarider16

Observer
"Tdi's aren't gutless if properly tuned. I have a 1987 tdi 130 on 35's that will eat a 4.0 D1 for breakfast." I would love to know what you did for this as well. I have a 93 RRC with a 300tdi in it and LT230 automatic. I get about 18-19 around town and 20-24mpg on the highway. I have been slowly working with the injection pump and have the smoke screw one turn in, the star wheel up a 1/4 turn, and the diaphragm in the stock position. Seems not matter how I adjust the injection pump I have to watch the EGT's on long slow grades. I am OK with the power I have now but would love to not have to be so careful of the EGT. I would guess my power is just about on par with my 3.9 in my 91 RRC maybe a little less for pulling mountain passes.
 
What does that do to the longevity of the engine? How is it tuned? Just curious, thanks!

Correct injection pump timing primarily. Rovers setting is somewhat retarded. The engines perform much better when injector timing is correct. This and fresh injectors (80k lifespan) make far more difference than turning up fueling. No fresh injectors and proper timing don't negatively effect longevity.
 
but did you advance the pump timing/plunger first ? How recent are your injectors ?

300 tdi engines with egr crap on them have the timing retarded even further than non-egr engines.

Please also note tdi Defenders have 1.4 transfer cases whch make a huge diference in acceleration, ability to hold a gear on a grade and, and keeping the engine on boost while on the highway.

This 130 is way faster than my 96 SE7 with 96k.
 
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High Center

Adventurer
Depending on the roads you take, what about a motorcycle? They get insane mileage, cheap to own, cheap to insure, even if you get them new its still not a wallet killer.

This is my recipe exactly. My commute is 90 miles (there and back) so I ride my V Strom 650 most days. The Disco is a nice break occasionally.
In terms of gas math: The bike can operate almost an entire week on what the D1 consumes in one day.

If you want one anyway (and who doesn't)- a bike is the best answer.

Best,
DB
 
"I think anything is faster than your SE7 now, no? "


yep. Sal says he has found me a D2 with a slipped liner that I can use this engine to fix.



dead disco.jpg
 

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