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Thread: 2.5 Turbo, Power?

  1. #1
    Join Date
    Oct 2006
    Location
    North MS
    Posts
    878

    Default 2.5 Turbo, Power?

    Know I have been away for a good while, but have been lurking for a while. I picked up a 1988 Defender 110 pickup (non-hicap) a few weeks ago. I am really enjoying driving the RHD, but I do have a few questions on the turbo. The engine runs ok and always starts easily, but it doesn't seem to have any power. I mean I have driven 2.25 petrols with more power...

    I noticed a split in the air hose coming from the air cleaner to the turbo, and it appears to have been there for a while, meaning air was bypassing the air filter. I replaced the hose, but also checked the play in the turbo shaft and it seems excessive. Checked it by rocking it up and down, like checking a wheel bearing.

    Is there an easy way to check to see if the turbo is doing anything at all? And when I say no power, I mean it won't pull even a slight hill in 5th gear without needing to downshift, and this is without hauling or towing anything. What kind of power should I be expecting out of the TD?

    P.S. - So I'm at the auto parts store Saturday, and someone walks up and says, my buddy has one of these, but he never drives it. I think he wants to sell it. So am going to look at a 71 IIA tonight. As if I needed any more Rovers!
    66 IIA 109" Pickup (WIP)
    67 IIA 109" NADA Wagon
    88, 2.5TD 110 RHD non-hicap pickup

    -I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.

  2. #2
    Join Date
    Feb 2007
    Location
    MD
    Posts
    216

    Default

    One can never have too many Rovers! My wife keeps count of mine but I don't.

  3. #3
    Join Date
    Oct 2006
    Location
    North MS
    Posts
    878

    Default

    Update: I finally convinced myself that the turbo was bad. The previous owner, who is a nice enough fellow, sent me a new boost diaphragm and a used turbo. I got these installed and drove the truck. I could finally hear the distinctive turbo whine, and it seemed to have slightly more power, but not dramatically so. I called the PO again and he said to just drive the truck for a bit. Ok no problem I thought. So I headed out to my mother’s house about 20 miles away. About 2 miles out, the turbo whine changed pitch slightly. About 5 miles out, all hell broke loose. I was going 40mph on a narrow two lane road in 4th gear when the engine went into overspeed. The damned motor finally found some power! I shifted to 5th gear quickly to bog the engine down and keep from blowing the motor. Smoke was billowing out the exhaust. Tapping the accelerator, I was able to get the motor to slow down for a minute. Quickly approaching a stop sign, I slowed as much as possible without stalling, was ecstatic to see no cars, blew through the stop sign, down shifted to 2nd, and made a u-turn just as the engine took off again. I had no choice but to take a second chance on the narrow road, with ditches on either side. Getting stuck on this road would be bad, since the 40mph limit is almost completely disregarded (shamefully admitting that I myself had been 120mph on it in a BMW), and there are two blind hills. She was pulling like a freight train in 2nd gear, quickly approaching the redline. A quick shift to 4th and I was ok. Getting to the opposite stop sign there was one car almost at the sign. I knew I couldn’t shift this time, and just braked down to 30mph and held down the horn, blowing smoke the whole way through. It was touch and go, but I made it home. Making my driveway turn would have been impossible, so right through the grass and shallow ditch I went at 30mph!, but that was not a problem. She pulled the hill in 4th and stalled just at the top of the drive. I had made it!

    The motor was hot as a firecracker. Pulling off the intake hoses revealed the cause. Turbo bearing failure. It was burning its own oil.
    66 IIA 109" Pickup (WIP)
    67 IIA 109" NADA Wagon
    88, 2.5TD 110 RHD non-hicap pickup

    -I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.

  4. #4
    Join Date
    May 2006
    Posts
    2,171

    Default

    Wow, close call.
    So, next stop a new Turbo?
    Les Parker
    Tech. Support and Parts Specialist
    Rovers North Inc.

  5. #5
    Join Date
    Oct 2006
    Location
    North MS
    Posts
    878

    Default

    Getting it rebuilt now. But the most important thing I learned is that this engine is starved for fuel. LR must have really cut the mixture back to meet fuel economy and emissions regs...

    Have to figure out how to turn the fuel up on this baby to get some power! Got any tips on adjusting the injector pump?
    66 IIA 109" Pickup (WIP)
    67 IIA 109" NADA Wagon
    88, 2.5TD 110 RHD non-hicap pickup

    -I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.

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