12j 2.5 NA - When to rebuild? - Defender Source
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  #1  
Old February 15th, 2016, 09:06 PM
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Tom Schuler
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Question 12j 2.5 NA - When to rebuild?

Bought an 88 LR 90 with 186k Miles (300k km). Everything seems to work extremely well. Gonna drop and reseal the transfer case and replace the input gear. Will also rebuild the swivels and do all the wheel bearings. Not sure when timing belt was last replaced, so will do that too. All in all the thing seems really solid and my son has been driving daily since we got it. Bad thing...mileage is not up to spec. Getting about 18.5 mpg (USgal) so this is about 20% less than what you would expect. My impression is that the truck has been pretty well serviced. Any idea how many miles you can get out of these engines before a rebuild becomes necessary?
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  #2  
Old February 15th, 2016, 09:17 PM
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They should never need a rebuild if treated properly. They don't wear out.
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  #3  
Old February 15th, 2016, 09:27 PM
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Raub A.
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They should never need a rebuild if treated properly they make great boat anchors.
Fixed it for you.
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  #4  
Old February 15th, 2016, 09:39 PM
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Tom Schuler
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Well, I don't have a boat, but in the meantime I can certainly take my time looking for a 200 TDI. That said, if they are really that durable that has a certain level of attraction as well....rest of the power train should be not highly stressed....
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  #5  
Old February 15th, 2016, 09:57 PM
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Raub A.
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Tom, come to the Uwharrie Safari this April and I will be more than happy to let you drive my 110 with a 200Tdi in it so you can actually feel the difference. The acceleration is so poor with a 2.5na in your truck it is dangerous on any road over 35mph especially hills and interstates.
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  #6  
Old February 15th, 2016, 10:41 PM
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That's a great offer. As we get closer to April I'll have to see if I can get organized enough to attend. And you're right...these hilly North Carolina roads would really like a few more horses...
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  #7  
Old February 16th, 2016, 12:19 AM
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Even if you come for just Saturday it would be worth it to see all the different trucks. And if your truck isn't ready no problem just jump in the wife's Camry and haul ass heck you are only and hour and half or so away. Anyway offer is open.
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  #8  
Old February 16th, 2016, 07:54 AM
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Robert Davis
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There are some that swear by the 2.5 N/A and 2.5 TD.
In spite of the lethargic performance some enjoy the durability.
In IMHO, if those engines were so well suited for a Land Rover, the TDI would have never been developed.
But it was and it is a better option, along with the Isuzu 4JB1-T, OM617, and Iveco PS10 engine used in the late Santana.
Our 110 with a 4JB1-T is a joy to drive... at full boost speed increases about 10MPH per second.
Scrubs has a 110 with OM617 pushing over 200HP.
He hasn't been on a dyno yet, but may be much higher.
There are bolt in options that will make your ride perform much better without cutting and welding.
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  #9  
Old February 16th, 2016, 09:19 AM
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Just googled it. You're right: it's close and it looks like fun. My wife and I are tent campers, so this could be our first outing of 2016.
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  #10  
Old February 16th, 2016, 09:22 AM
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Uhwarrie is a good time.
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  #11  
Old February 16th, 2016, 09:41 AM
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Good engine. If you ever decide to replace it, the 2.5 NA diesels are popular with the series rover crowd.
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  #12  
Old February 16th, 2016, 09:43 AM
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Should be a good time
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  #13  
Old February 16th, 2016, 11:04 AM
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I happen to know where there is a 200tdi ready to go.......
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  #14  
Old February 16th, 2016, 11:06 AM
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Quote:
Originally Posted by ranewman View Post
I happen to know where there is a 200tdi ready to go.......
Why don't you put it in your truck then? Scared of the POWER!?!
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  #15  
Old February 16th, 2016, 11:10 AM
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will run circles around you sir......no issues here...
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06 L322 Range Rover "The Black Pearl"
06 L322 Range Rover "2.0"
97 Disco SD "Emma" (250k and going strong)
95 P38 "Gus" RIP
99 P38 Callaway Edition #106 RIP
85 Defender 110 2.5NA "Margret"
01 D2 SE7 "Cuzn It" (blown up POS)
03 D2 SE "Fred"
Hoarder of 2.5 NAD parts
"In God we trust. Everyone else keep their fucking hands where they can be seen."
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  #16  
Old February 16th, 2016, 11:11 AM
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Originally Posted by ranewman View Post
will run circles around you sir......no issues here...
Uhh no Newman, maybe with your L322 but not your 110.
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  #17  
Old February 16th, 2016, 11:14 AM
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Hahahahahahhahhah!!!!!
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  #18  
Old February 16th, 2016, 11:19 AM
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off road gentlemen.....off road...you have to know how to drive it and not be afraid of the 2.5......
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06 L322 Range Rover "The Black Pearl"
06 L322 Range Rover "2.0"
97 Disco SD "Emma" (250k and going strong)
95 P38 "Gus" RIP
99 P38 Callaway Edition #106 RIP
85 Defender 110 2.5NA "Margret"
01 D2 SE7 "Cuzn It" (blown up POS)
03 D2 SE "Fred"
Hoarder of 2.5 NAD parts
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  #19  
Old February 16th, 2016, 11:25 AM
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Quote:
Originally Posted by ranewman View Post
off road gentlemen.....off road...you have to know how to drive it and not be afraid of the 2.5......
A legit fear. I have been with Raub when he had to use low range on paved roads to get up the hill with the 2.5. Blame it on me, but I only add 250 lbs.
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