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  • 2003 1KZ Diesel Engine Life

    Hi, can any body give me some indication as to what Klms you would expect to get from the 1KZ diesel.
    I am the 3rd owner and from what I have been told the engine has been serviced regularly.
    Since we have had the Prado it has done 30,000 klms with oil being changed every 5,000klms.
    It uses about 1 litre of oil after about 4,000 klms.
    It would also be nice to get some idea as to would be the xpected rebuild cost.
    Our Prado has done 232,000 klms.
    It does not blow smoke and runs well.
    Thanks

  • #2
    Hi, I have a 2003 GX that's done 230,000km and it does not blow smoke or use oil (noticeably). I've been pretty good with the 5000km services. I expect mine to keep on going strong for another 100K - 200K but more maintenance will be needed. I've had the fuel filter replaced and the injectors and have just completed a clean-out of the inlet manifold. The engine itself seems to go really well (touch wood) and I'm hoping the inlet clean-out will return some power and the fuel economy we used to enjoy.

    Not sure what a rebuild will set you back but I've seen 1kz motors on ebay for (I think) about $4000. I've heard that if you pull the engine out yourself and drop it into a workshop you save a heap on the costs of a rebuild.
    ------------------------------------------------------------------------------------------------------
    2003 GX TD Prado, 245 Cooper ST, Bilstein + Ridepro suspension, Icom 4400 UHF, Dig Options Sat Nav, ARB Alloy rack, Foxwing awning, 2012 Tvan Marranji Camper Trailer.

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    • #3
      1 litre every 4k sounds excessive ?? Myn didnt use a drop but only had 107 on it when I sold it, my 1kz had 103 on it when the head went (cracked RS) needed a new one, it was serviced every 5k oil and filter, ran good quality oil, genuine filters and genuine coolant, never over heated the head just went bang out of the blue, still drove it around for a few weeks prior to getting it fixed, 4g later and all done. It only showed it had a problem on the freeway when giving it some, even then the guage didnt move, I noticed it early due to water level in the overflow bottle. Im not a lover of the 1kz and personally think they go a heap better in manual then the auto but just my opinion, and for a diesel dont think there that great on fuel and not sure on other peoples but mine would use fuel like a petrol V6 on the freeway if trying to maintain 110k, under 100 was good, would just nudge under 10L per 100, 120 would see it jump to 13/14L per 100. Put it this way my 120 V6 sitting on 110k loaded with air on will give me figures of between 11 and 12L per 100k, guess what ?? same as my 1kz use to, round town is the difference, about 3L per 100. Dont think alot of these new motors will do the klms the old non turbo diesels did.....not without some serious money on them...Cheers Steve
      Face lift 150 Prado V6 auto. No mods yet

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      • #4
        Yeah Roo dont really hear of the 120 cracking heads for some reason, why ?? I have no idea, I thought everything engine wise was the same?? Maybe some one else might now why ?? But seemed extremely common in the 95's and the lux's. They use to say the same in regards to the VL commodore running the nissan engine and the skyline, VL's proned to blowing head gaskets they reckon cause the radiator was lower in the commodore then the skyline ?? I had a VL and never had the head go and it copped a fair flogging by me and been an ex chaser, or as you said all luck with what ever you buy like the patrols with the ZD 30 plenty running around never had an issue although I wouldnt buy one to take a chance........Cheers Steve
        Face lift 150 Prado V6 auto. No mods yet

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        • #5
          Roo,
          I hear what you're saying about everything else in the engine bay playing its part but doesn't the 1KZ in the 120 have a different head casting to the 1KZ's in the 90 series?

          Just curious, I would never buy either of them.
          [B]Declan[/B]: [SIZE=1]1997 GXL 4.5 Auto 80 series on [B][COLOR="#FF0000"]LPG[/COLOR][/B], ARB bullbar, 2" OME lift, 32" MTZ, GME UHF, rear ARB locker, Kaymar spare wheel carrier[/SIZE]
          [B]PLANNED[/B]: [SIZE=1]3 or 4" suspension lift, 2" body lift (maybe), winch, 35" MTZ + roadies, front locker, sliders, cylinder head rebuilt for [B][COLOR="#FF0000"]LPG[/COLOR][/B], Garret [COLOR="#4499ff"][B]Turbocharger[/B][/COLOR][/SIZE]

          Comment


          • #6
            Hi Declan, going by what Toyota said to me when I was searching around working out which was the best way to get a new head for the prado I was told there was no difference in part number for the head on the 1kz either in the 95's or the 120's since the first 1kz was introduced into the prado model. There was never a superseeded part number, nothing, this was from Toyota and this was after alot of phone calls to toyota technical and speak to there tech guys and also complained to customer service about the issue with cracked heads, didnt want to know about it....I sure myn was from a company in Melbourne, cast straight from a block of alloy and was told they have never had one come back since ?? Couldnt verify that myself but my mechanic had used them before and he also told me not to go toyota again as he had done a few heads on them and never got the new one from toyota as they couldnt tell him wether they were the same casting as what was already on the car or wether it had been modified to rectify the problem and again no change or supseeded part number so no way he was taking any chances....Cheers Steve, PS I would not buy another 1kz myself to underpowered and thirsty for a diesel. I think alot better in manual form....(my opinion)..............
            Face lift 150 Prado V6 auto. No mods yet

            Comment


            • #7
              Definately an issue with the materials as you have said Roo as the hilux's with the 1KZ's didnt come in auto and were still cracking as well, and mine did virtually no towing what so ever ( I did tow but only a few times) I think it was just a shit casting from toyota who new about it but didnt want to bother with the issue once it was out of warranty. Myn was extremely well serviced by the book had oil and filter changes every 5k, genuine filters and genuine coolant from day one and still cracked on me so defiantely down to shit material used by Toyota and a bit of bad luck as well, but as said underpowered in auto form and definately not economical for a turbo diesel.Cheers Steve
              Face lift 150 Prado V6 auto. No mods yet

              Comment


              • #8
                G'day,

                I used to own a 94 Surf ssrx ltd. the thing had ticked over 400k and was still going strong without any signs of slowing down. 5k oil changes, 10k fuel filter changes and CEM oil flush at each oil change kept the internals clean and also helped keep the oil pressure up. I have no doubt that the engine will outlast the body which is still rust free, paint is mint too. As far as the 1KZ's go if you spend the time taking care of it it'll take care of you for a long time.

                Cheers,

                Chris.
                SOLD!!! 2011 Prado GXL manual in silver
                ARB Winchbar, Lightforce HID's, 3" SS Manta exhaust, 3" Monster Rides suspension system, Tracklander roofrack, Ostrich wing awning, Kaymar dual wheel carrier, Gturbo stage two Grunter and reprogrammed ECU. Trackabout Dakar SV Extenda. Purchased 2017 Landcruiser 200 Altitude.

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                • #9
                  Hey Roo
                  Mines done almost 300k and doesnt use a drop of oil. Ive changed the coolant but how do i check if the water pump needs replacing? does it usually leak first?

                  Comment


                  • #10
                    Originally posted by barkern View Post
                    Hey Roo
                    Mines done almost 300k and doesnt use a drop of oil. Ive changed the coolant but how do i check if the water pump needs replacing? does it usually leak first?
                    Hey barkem.
                    I trust u will be changing your timing belt cos at 300 its due again.
                    Be assured your lucky to get this far on your original waterpump... Just change it out when you do the timing belt.
                    You will rest easy on your next big trip mate.
                    Over and out. Drew
                    HERS - KZJ120, BILSTIEN / KINGS, AMTS GEAR, RHINO GEAR, OUTBACK DRAWERS ETC ETC ETC
                    MINE - HDJ78 RV TROOPY. 1HDFTE. TWIN FACTORY LOCKERS. STEINBAUER POWER. OME LIFT. BEAST.

                    Comment


                    • #11
                      F.y.i new long motor at Toyota $8500.

                      Comment


                      • #12
                        Originally posted by Anth120playdo View Post
                        F.y.i new long motor at Toyota $8500.
                        Haha. Yes thats right ####...

                        $8500 for a new motor if you cook your motor by being a tight ass a not changing your waterpump...

                        Geez thats evil isnt it!!!
                        HERS - KZJ120, BILSTIEN / KINGS, AMTS GEAR, RHINO GEAR, OUTBACK DRAWERS ETC ETC ETC
                        MINE - HDJ78 RV TROOPY. 1HDFTE. TWIN FACTORY LOCKERS. STEINBAUER POWER. OME LIFT. BEAST.

                        Comment


                        • #13
                          Originally posted by Talktheroo View Post
                          Quite evil, Drew my boy.
                          Drew is the proud owner of an AMC head. He can tell you all about those Chinese genuine Toyota ones, ah Drew.
                          300,000 kms on a water pump, hmmm..... I am with Drew on this.
                          $8,500 is not bad when it's a long motor. But you do get that sh*tty cylinder head with it. I reckon go the short engine and put a AMC head on it.
                          The difference with the 1KD-FTV cylinder heads is that they are cast in Japan again and not China like the 1KZ-TE heads were.
                          You can buy the Chinese heads for about $930.00 bare. The bare AMC head which is cast out of pure Aluminum ingot is about $1,100.00. The complete head assemblies are more again, but save you a lot of time and labour.
                          The Roo.
                          Good point about he Chinese head that might come with it.
                          I think the engines will last longer than 400-500klms.
                          Water pumps, generally start leaking and Toyota ones, slowly before and huge damage is done.
                          But yes we can replace everything before it fails, how longs a piece of string anyway?????

                          Should I do my alternator too?
                          Starter?
                          Diffs?
                          Ohh missed the gearbox.......
                          Brake calipers?
                          Clutch?
                          Where does it end ?

                          Best just get a new car ey?

                          Lol...... Just having fun not arguing :-)
                          Anth120playdo
                          Banned
                          Last edited by Anth120playdo; 11-05-2014, 09:05 PM.

                          Comment


                          • #14
                            Originally posted by Anth120playdo View Post
                            Good point about he Chinese head that might come with it.
                            I think the engines will last longer than 400-500klms.
                            Water pumps, generally start leaking and Toyota ones, slowly before and huge damage is done.
                            But yes we can replace everything before it fails, how longs a piece of string anyway?????
                            I will do my waterpump at 300,000 if it makes it hey.....
                            Should I do my alternator too?
                            Starter?
                            Diffs?
                            Ohh missed the gearbox.......
                            Brake calipers?
                            Clutch?
                            Where does it end ?

                            Best just get a new car ey?

                            Lol...... Just having fun not arguing :-)
                            Hey ####. What you are saying is gospel mate. You cant have a car with upwards of 1/4 million kays and expect to not start spending money on it.
                            What is relevant is how much mud you drown your alt & starter in i guess...
                            I just had to put new brushes in my starter a few months ago...
                            Ill probably consider carrying a spare alt on my next big trip
                            And im currently sorting thru bushs in the front end.

                            But i guess this thread is about the 1kzte motor not all that other crap...

                            Im looking to make 1/2 million kays out of my donk for sure now.
                            HERS - KZJ120, BILSTIEN / KINGS, AMTS GEAR, RHINO GEAR, OUTBACK DRAWERS ETC ETC ETC
                            MINE - HDJ78 RV TROOPY. 1HDFTE. TWIN FACTORY LOCKERS. STEINBAUER POWER. OME LIFT. BEAST.

                            Comment


                            • #15
                              Oh yes I have replaced the head at 245 kays as well... Geez how could i forget???

                              Geez 'Start up rattle' makes it sound worse than it is mate...
                              Its more like a Lifter 'clackety clack' until all the oil is pooling around the lifters on start up...
                              Ive always used RX SUPER, but since fitting the head ive been using MAGNETEC...
                              The oil seems to not be pooling around the lifter area over night... In otherwords its flowing back to the sump and leaving my lifters dry'ish' in the morning...
                              Ive investigated this but removing the rocker cover to find the lifters with no oil around them...
                              I started it up with no cover on and oil immediaty started running out of the cam bearings and flooding the lifter area...
                              With the lifters flooded in oil again the 'clakety clack' stops...
                              So im in two minds...
                              Either the clearance inbetween lifter & head is too large and the oil flows/drops to the sump overnight or...
                              The Magnetec is not suitable in my FNQ enviornment.

                              I will replace the Magnetec with Penrite HPR15 too see if this fixes the problem...

                              Geez it never stops this chasing your tail shit...
                              HERS - KZJ120, BILSTIEN / KINGS, AMTS GEAR, RHINO GEAR, OUTBACK DRAWERS ETC ETC ETC
                              MINE - HDJ78 RV TROOPY. 1HDFTE. TWIN FACTORY LOCKERS. STEINBAUER POWER. OME LIFT. BEAST.

                              Comment

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