- Location
- Huntsville, AL
All I can say is WOW!!!
WOW! Just doesn't quite sum it up.
All I can say is WOW!!!
Glad you caught that. Working with diesels as long as I have as well as gasoline, this is were most people fall on their face when converting over to diesel. If I wasn't confident in my theory I wouldn't have tackled the project. Transmissions on diesel drivetrain are geared differently...period. Diesels will always turn lower revolutions no matter what you do, but "turning them up" will increase how fast you get there and believe it or not increase your top end rpm's.
Trust me, it is done by myself and many others in the military and contract support while in the war zones I have been. You will have your newer diesels were increasing fuel will not increase your top end, this is where you are electronically governed and you must change the parameters on the ecu (have done that multiple times on CAT, Cummins, and Mercedes). Even when increasing fuel an removing the electronic governor you will hit a brick wall and never achieve without proper gearing the speed a gasoline engine will achieve.
With the TD27 the top horsepower is reached at about 4,000rpm (leading me to believe the stroke is not as high as normal diesels), even so the TD27 in the van that I drove overseas leveled out rpms at 5k rpm. With that in mind even with the stock transmission it would still turn enough for normal highway speeds here. My 03 xterra never saw more than 5k rpm in any condition and about 3k rpm for highway speed(by choice), but that is just me I suppose. But in the end when it is rolling under its own power I will update on rpms versus road speed and top speed.
glad to hear you've thought through all of the bases sir! I'm looking forward to hearing what your end result is, hopefully everything works great!
lol, thats what I thought too, but my wife and I share no really memories with the STi.... the xterra is nothing but memories and good times. Also I just bought the STi only to have spun a bearing 2 weeks after normal driving.... so in actuality I am pulling engines in 2 vehicles at the moment and the subaru is costing me over $1k in parts (for a stock rebuild) with me doing the work... so it has got to go! lol
Ty!Bravo Sir...Bravo!
.... Oh how I would love to make messing with xterra's full time with no distractions!
For this one truck about $6k.
Less than a SAS job!
TheFauxFox said:Less than a professionally installed SAS.
I am going to SAS it myself, but I'll put together an SAS, and I'll not buy the kit. And a diesel swap would be done with some help from a couple friends. But, 6K is a hard number to swallow. At that point, I have to ask myself whether the cost is worth it in the long run. I am looking to see what kind of savings I can get fuel wise. I think it would honestly be more cost effective when the mileage on the 3.3 gets way up there.
part of the cost is the equipment I bought to do the jobLess than a professional install, but I see you are a fabricator. I'm sure you could do it for less than 5.
I dunno dude, the thing is, if you can't do the wrench work yourself to rebuild the diesel, I don't suggest you get one...the maintenance costs *ARE* higher on diesel, which, given the higher price of the fuel as well, I don't see how you'll be making up the cost of doing the swap anytime soon, nor justifying it from the fuel economy standpoint. sure the diesel may have more torque than your 3.3 but, that's all it's got on it really.... as far as a SAS...if you spend less than 6K on a SAS, you've either got a fantastic hook up on parts, or you didn't upgrade to BETTER parts while you did the SAS, you're just getting it in there and will be doing the upgrade later....(there's a LONG thread on this on the nissan 4x4 group on FB, most everyone estimates a SAS job should run you 6-7k unless you junkyard parts absolutely everything, fabricate all mounts/brackets/etc yourself, and even then you're pushing your luck because of adapters that you need.)
Roninjiro: do you have an estimate on what you expect the fuel economy to be on the diesel swap? HP/Torque numbers? I'm curious, I'd like to do a pros/cons on the gas vs diesel...