Another KZTE head failed.

Vlak vark · Post by **Vlak vark** » Tue Jan 17, 2012 12:35 pm

Sad to say. After a lot of debate and head scratching over my heating problems with my lux, I took the head off last knight and with great disepointment no.3 and 4 is cracked.

jacques kotze · Post by **jacques kotze** » Tue Jan 17, 2012 12:40 pm

Jammer om te hoor Nico, Hoop jy kry hom gou reg. Sterkte.

JamesC · Post by **JamesC** » Tue Jan 17, 2012 12:50 pm

Not to rub salt on your wounds...but 2 x kzte motors failed on me with the subsequent result that I am now a converted petrol head.

And interestingly enough, going to Zambia in December petrol available everywhere - diesel tanks ran dry, too many big trucks...

4x4Maniac · Post by **4x4Maniac** » Tue Jan 17, 2012 2:37 pm

Jammer ook om dit te hoor! Ek voel jou pyn.

As jy n 5 gat gasket nodig het, ek het een vir jou!

Marty · Post by **Marty** » Tue Jan 17, 2012 3:13 pm

oi, ek's jammer om te hoor van die issues wat jy op getek het.
Ek hoop jy kom gou reg. Ek is nogsteeds baie gelukkig met my KZ-TE.

Het jy enige werk op die motor laat doen, of was hy nog stock?

OOOOMS · Post by **OOOOMS** » Tue Jan 17, 2012 3:35 pm

Ai Nico, ten minste het jy 'n spaar voertuig.....

Hoop jy kom gou reg....nie lekker as jou baba siek issie....

Myne is nog op antibiotica

SWARTLUX · Post by **SWARTLUX** » Tue Jan 17, 2012 3:53 pm

Eish ek is bly ek het petrol gekoop!

Ek dink nie dis soveel so die diesel wat sleg is nie ek dink net baie mense ry die crap uit hulle uit en verkoop dit as dit oor motor en diens pla ngan en dan koop arme onskuldige mense die goed dinkende dat hy 'n kwaai bakkie koop net om later met probleme te sit.

Dis juis oor al die manne hier op die forum wat so gepraat het va ndie KZt's wat heahs blaas dat ek petrol gekoop het.

Nogsteeds nie lekker gevoel om 'n broken hilux te he nie, maar nogsteeds beter as 'n landrover wat reg is!

Marty · Post by **Marty** » Tue Jan 17, 2012 4:23 pm

Does anyone know of a head that failed that had the intercooler fitted? - I can't find any.

If you go back the intercooler equipped version of the enginewas used in KZJ90 (Land Cruiser Prado, Colorado 3-door), KZJ95 (Land Cruiser Prado, Colorado 5-door)[1], KZN130 and KZN185 Hilux Surf.

And the Prado's are damn good.

Now the thing is do you fix the head that will cost 13k - 18k?

Or go for the updated version 1KD-FTV engine which uses common-rail direct injection and delivers more power while using considerably less fuel.

Or investigate a D4D engine?

Thats my 5cents worth. :)

louis fourie · Post by **louis fourie** » Tue Jan 17, 2012 5:28 pm

Nico, jammer om te hoor, dit is nie lekker nie.

Wag tot Thabo al die negatiewe kommentaar hoor...... dan het julle moeilikheid

My KZ se head het ook gekraak so jaar terug - self reggemaak en al amper 40 000km later en geen probleme.

Thabogrobler · Post by **Thabogrobler** » Tue Jan 17, 2012 5:32 pm

All those knocking the Kz - careful!

Mine just went over 300 000km's and still pulls like a steam train.

BUT it has an intercooler since 72k km and 99.5% of the driving was done by myself.

Anyway, hope you get your baby up and running soon!

And why not have the new head polished while you are at it?

Thabogrobler · Post by **Thabogrobler** » Tue Jan 17, 2012 5:33 pm

louis fourie wrote:Nico, jammer om te hoor, dit is nie lekker nie.

Wag tot Thabo al die negatiewe kommentaar hoor...... dan het julle moeilikheid

My KZ se head het ook gekraak so jaar terug - self reggemaak en al amper 40 000km later en geen probleme.

Jitte Louis, jy is darem maar net reg!

Post by **george** » Tue Jan 17, 2012 6:44 pm

Self gewag dat Thabo julle kom reg sien

Julle gaan nou nog vir Niel op julle se case ook he :alvarin:

Het julle die artikel oor die 2.8 colt gesien in die SA4x4?Dit gaan ook oor die heads wat gekraak het en daar is ouens wat 'n oplossing het.Glo nie dis dieselfde as die KZ nie

4x4Maniac · Post by **4x4Maniac** » Tue Jan 17, 2012 7:32 pm

Myne het ook n SAC IC gehad maar het hom gekry op 160k head het gegaan op 235k... Glo dit was n thermostat wat gefail het. Sover nog niks probleme weer nie.

Post by **Mud Dog** » Tue Jan 17, 2012 9:19 pm

george wrote:Self gewag dat Thabo julle kom reg sien

Julle gaan nou nog vir Niel op julle se case ook he :alvarin:

Niel? Wie's hy? Iemand heir op die forum?

Donkey · Post by **Donkey** » Tue Jan 17, 2012 9:28 pm

Nico sorry to hear, ask Louis who had his truck's one cracked also, seems to me the AMC head replacememt is the way to go. Also my observation is that the KZ head crackes as a result of something, not just on its own

me thinks, guys who have heads cracked its either a faulty thermostat, blocked radiotor etc.

Hope you come right, please keep us posted

J.C Avis · Post by **J.C Avis** » Tue Jan 17, 2012 11:25 pm

Dis hoekom ek die D4D ombouing wil doen terwyl my engin in ñ goeie toestand is met geen olie verbruik,het turbo vervang op 210 000km,staan nou op 232 000km. Dat ek nog ñ rand of twee kan kry vir die engin.

Marty · Post by **Marty** » Wed Jan 18, 2012 8:11 am

Thabogrobler wrote:All those knocking the Kz - careful!

Mine just went over 300 000km's and still pulls like a steam train.

BUT it has an intercooler since 72k km and 99.5% of the driving was done by myself.

Anyway, hope you get your baby up and running soon!

And why not have the new head polished while you are at it?

I have to agree, I have had mine since 94000km I am standing on 250 000.
The only issues I have had was dead battery. And the aircon pipes I had to replace.

The guy that works with me, got his up to 360 000km. The major issue he had was the oil pump.

Vlak vark · Post by **Vlak vark** » Wed Jan 18, 2012 6:46 pm

I have my truck for 3 years. From the word start the heat gauge would rise on a uphill.
As soon as I drive on a straight the temp will drop. When I got her she had 182000km on the
Clock, now she stands on 242000Km.
I actualy took her for the dyno to see if the heat problem won't vanish.
So the only mod. Was to increase the boost from 0.45 to 0.7 bar.

ROBERT · Post by **ROBERT** » Thu Jan 19, 2012 9:25 am

Donkey beat me to it, apparently the AMC head is much stronger than the OEM head and also cheaper. As far as I can remember its about R4k for the head.

4x4Maniac · Post by **4x4Maniac** » Thu Jan 19, 2012 10:03 am

Vlakvark, ek dink jyt n dud gekry vd begin af. Daai naald gaan nie op nie as die head reg is nie! Dit wys jou net dat jy gery het met die gekraakte head al die pad.

4x4Maniac · Post by **4x4Maniac** » Thu Jan 19, 2012 10:05 am

Robert, realistically I think the AMC head is probably around 7k the other imports are around 4k

Hoppy · Post by **Hoppy** » Thu Jan 19, 2012 10:48 am

I use the AMC heads, it is a good idea to replace the visco unit and thermostat with OE parts.

Ps: Remove the blue and white sticker on the back to prevent further damage.

Mr_B · Post by **Mr_B** » Thu Jan 19, 2012 11:18 am

I'm no diesel fundi, but isn't it worth fitting a EGT gauge to monitor the exhaust gas temp? I've heard from numerous people that most cracked diesel heads are caused by overheating of the exhaust mani, which in turn cracks to head?? Maybe that's all just nonsense?

Vlak vark · Post by **Vlak vark** » Thu Jan 19, 2012 12:09 pm

Ps: Remove the blue and white sticker on the back to prevent further damage.[/quote]

Dit is hoekom hy so lank geloop het. :evil: :evil:

Het klaar vir Louis gekontak vir al die besomderhede.

Vlak vark · Post by **Vlak vark** » Thu Jan 19, 2012 12:19 pm

Nou net met head sone gepraat.amc head A klas R8000 1 jaar waarborg. B klas head R5100 8 maande waarborg.

Donkey · Post by **Donkey** » Fri Jan 20, 2012 7:49 am

Ps: Remove the blue and white sticker on the back to prevent further damage.

Alan please explain a bit here what you mean.

4x4Maniac · Post by **4x4Maniac** » Fri Jan 20, 2012 8:13 am

Mr B,

I'll also recommend getting an EGT, but the only times I recon it will save the engine is if something goes wrong eg you experience extremely high temps. I took mine to the dyno and with load the brought it back from 720 degrees to 700 with a load. Maybe ceramic coat on the exhaust mani would also keep it cooler. Hense longer lifespan of the head.

louis fourie · Post by **louis fourie** » Fri Jan 20, 2012 4:31 pm

Vlak vark wrote:I have my truck for 3 years. From the word start the heat gauge would rise on a uphill.
As soon as I drive on a straight the temp will drop. When I got her she had 182000km on the
Clock, now she stands on 242000Km.
I actualy took her for the dyno to see if the heat problem won't vanish.
So the only mod. Was to increase the boost from 0.45 to 0.7 bar.

Daai heat gauge bly op die helfte van 74°C tot 110°C. So akkuraat soos wanneer 'n mens 'n shifting gebruik vir 'n vernier.

louis fourie · Post by **louis fourie** » Fri Jan 20, 2012 4:37 pm

wbisschoff wrote:Mr B,

I'll also recommend getting an EGT, but the only times I recon it will save the engine is if something goes wrong eg you experience extremely high temps. I took mine to the dyno and with load the brought it back from 720 degrees to 700 with a load. Maybe ceramic coat on the exhaust mani would also keep it cooler. Hense longer lifespan of the head.

Werner

Jou EGT loop baie hoog. Ek hardloop so tussen 240°C en selde oor 650°C. Google EGT - die maks is 650° en vir kort rukkies kan jy na 704°C toe gaan om heeltemal veilig te wees. Hoe lank daai kort rukkie is, dit weet ek nie.

Ek het Desember karavaan gesleep en die maks op geskuif 685°C (sodat die alarm nie altyd in my ore raas nie) en 2 of 3 keer by die temp uitgekom

Allan wat is jou gevoel oor die maks EGT?

4x4Maniac · Post by **4x4Maniac** » Sat Jan 21, 2012 9:03 am

Hi Louis,

Ek glo nie dis die norm nie en hardloop nie naastenby daardie temperature gewoonlik nie (sonder load). Onthou hulle het hom op sy maks load vasgetrek volgens spec so dis hoekom dit so hoog was, hoop regtig nie dit is altyd so nie, maar gaan eers n EGT moet opsit om te vergelyk. As jy die EGT gauge in het behoort jy dadelik die alarm te hoor en dan die pedaal bietjie laat skiet. Dis wat ek glo die head se leeftyd verleng. Warmee ek meer gerus is, is die feit dat my maks 700C is op maks load, maar sal nogsteeds EGT wil insit om daai hoe temperature heeltemal te verhoed en soos jy se nie eers oor 650C te gaan nie. Onthou dit is nie noodwendig die hitte wat hom laat kraak nie, maar die wisseling van warm vs koud.

louis fourie · Post by **louis fourie** » Sat Jan 21, 2012 9:08 am

wbisschoff wrote:Hi Louis,

Ek glo nie dis die norm nie en hardloop nie naastenby daardie temperature gewoonlik nie (sonder load). Onthou hulle het hom op sy maks load vasgetrek volgens spec so dis hoekom dit so hoog was. As jy die EGT guage in het sal jy mos dadelik die alarm hoor en dan die pedaal bietjie laat skiet. Dis wat ek glo die head se leeftyd verleng. Warmer ek meer gerus is, is die feit dat my maks 700 is op maks load, maar sal nogsteeds EGT wil insit om daai hoe temperature heeltemal te verhoed!

louis fourie · Post by **louis fourie** » Sat Jan 21, 2012 9:09 am

Nico

As jy begin met die job is dit makliker om die exhaust manifold studs uit die head te draai. Dan hoef jy glad nie die turbo af te haal nie - Dawie Nortier se raad as ek reg kan onthou

320busa · Post by **320busa** » Sat Jan 21, 2012 10:16 am

n Intercooler sort daai top se probleme uit. Die exhaust gasse op die KZ enjins raak baie warm, as jy n ordentlike intercooler opsit sal jou exhaust temperature met tot 200 grade sak, wat beteken dat jou top ook nie so warm word nie, dus langer enjin lewe. Sit byvoorbaat n nuwe termostaat in elke 100 000km of so as deel van jou service.

Donkey · Post by **Donkey** » Sat Jan 21, 2012 11:21 am

I think I'll follow your advise Kosie

, will it make any difference if maybe I use maybe a 2.5 Ford intercooler?

Vlak vark · Post by **Vlak vark** » Sun Jan 22, 2012 8:10 am

Het vanoggend gou gekyk na die ou head gasket. Water poorte Aan die exhaust kant is oop,
Water poorte aan die intake kant is afgeblank.

Dit se vir my dat die head van die begin af swak sirkilasie gehad het.
Ek weet nie of die voorige eienaar die head af gehad het nie?

Dalk het die manne wat klaar al hulle heads gedoen het en nog die ou gasket het
Bietjie lig op die onderwerp sit. Ek probeer die photo oplaai met crapberry sonder geluk.

KZTE Nut · Post by **KZTE Nut** » Sun Jan 22, 2012 6:12 pm

Hello manne

Sorry Nico to hear of your KZTE trouble...

I have KZTE and had IC and Dastek Chip fitted at 102 000 kilos. Now sitting on 257 000km
Just had the injectors replaced - the Bosch chap says I should do it every 80 000km. The new injectors made a big difference in low down acceleration.
In past year also replaced :-
- 4x shocks
- aircon and double alternator fan (Use the correct ones that are not too wide or else they WILL break

); trust me...
- aircon tensioner pulley bearing

I washed out the intercooler with petrol (was vuil !)(and rinsed it with plenty water) and I am sure that the effort made a difference. Bakkie felt a bit more responsive. I would love to do the conversion to move IC to position above motor - just like the Prado.

I service the bakkie myself since 102 000 kilos and change fuel filter, air filter, oil filter and oil without fail every 10 000km or sooner if caravan has been towed for longish trip. I always idle her for few minutes after long trips.

I see with interest the tip that I should change the thermostat every 100 000km from 320busa.
Do you have any other valuable suggestions on what I should change to keep her going nicely ?
I have never drained radiator on the bakkie - should I do this ?

I was as thinking of taking my bakkie to SAC for them to dyno it and to check it out. We are pulling caravan to south coast and I want to cruise nicely up the Pietermaritzburg N3

Lastly how do i know if the viscous fan is not operating properly ?

Thanks !
KZTE nut

4x4Maniac · Post by **4x4Maniac** » Sun Jan 22, 2012 6:57 pm

Hi KZTENut,

Yip always a good idea to even take the radiator out and give it a good chemical clean incl the IC. Take it to a radiator shop and have it properly cleaned, like Silverton. Also replace the coolant everytime you service, takes about 3L, dont forget the oil and oil, diesel and air filters. I check my diff, steering and gearbox oils somme at the same time.

4x4Maniac · Post by **4x4Maniac** » Sun Jan 22, 2012 7:02 pm

Hi Vlakvark,

I got a spare gasket 5 hole for the KZTE as I wanted to use the "original" from Toyota, but they are identical. Hope this picture helps to answer your question!

4x4Maniac · Post by **4x4Maniac** » Sun Jan 22, 2012 7:05 pm

320busa,

Yip ek sal daai ingedagte hou, want dit was die oorsaak van head! Thermostat wat nie oop gemaak het nie

Donkey · Post by **Donkey** » Sun Jan 22, 2012 7:24 pm

Mervyn please give more details on your IC.

Thabogrobler · Post by **Thabogrobler** » Sun Jan 22, 2012 10:53 pm

yep, also cleaned the IC December.

Just take it out and rinse with petrol. About 5L should do it. Surprisingly it was not that dirty after 300 000km, just a sticky residue that easily dissolves in petrol.

Make sure to get ALL the petrol out otherwise you could have some expensive sounds coming from the motor...

Vlak vark · Post by **Vlak vark** » Mon Jan 23, 2012 1:49 am

wbisschoff wrote:Hi Vlakvark,

I got a spare gasket 5 hole for the KZTE as I wanted to use the "original" from Toyota, but they are identical. Hope this picture helps to answer your question!

Same as mine, looked again, there is smaller water holes on the intake side.

I will take a photo with the camera today and post it.

Vlak vark · Post by **Vlak vark** » Mon Jan 23, 2012 2:44 am

What do you argue? Force the water to exhaust side to cool the exhaust side,
Or force the water to the exhaust side to heat the water up?

Vlak vark · Post by **Vlak vark** » Mon Jan 23, 2012 1:31 pm

The purple ones are the existing waterholes. the red one's is blank

there is a crack between the valves and a crack running to the intake side

4x4Maniac · Post by **4x4Maniac** » Mon Jan 23, 2012 11:40 pm

Vlak vark wrote:The purple ones are the existing waterholes. the red one's is blank

there is a crack between the valves and a crack running to the intake side

Janee, myne het ook die kraake tussen die twee valves gekry, maar nie so erg soos joune nie, het ook paar kraakies op die precombustion chambers gekry.

Enige planne wanneet jy die head gaan vervang?

Vlak vark · Post by **Vlak vark** » Tue Jan 24, 2012 7:14 pm

hopenlik binne die volgende 2 weeke. skraap nog die bokke bymekaar :alvarin: :roll:

4x4Maniac · Post by **4x4Maniac** » Tue Jan 24, 2012 7:43 pm

Vlak vark wrote:hopenlik binne die volgende 2 weeke. skraap nog die bokke bymekaar :alvarin: :roll:

Janee, ek moes 4-5 maande met my lux so rondgery het om te spaar, wou vir my baie graag n canopy gekoop het nou spaar ek maar weer en gaan maar eerder een bou!

louis fourie · Post by **louis fourie** » Sat Jan 28, 2012 5:41 pm

Nico

Hoe lyk dit daar by jou. Enige vordering?

Vlak vark · Post by **Vlak vark** » Mon Jan 30, 2012 8:58 am

Trok is reg nuwe head gkoop by part land in pietersburg. Sal vandag probeer on etg gauge en intercooler te bestel. Het gister so 150km gery.alles lyk goed

louis fourie · Post by **louis fourie** » Mon Jan 30, 2012 12:45 pm

Vlak vark wrote:Trok is reg nuwe head gkoop by part land in pietersburg. Sal vandag probeer on etg gauge en intercooler te bestel. Het gister so 150km gery.alles lyk goed

Nico

Voor jy 'n IC bestel, kyk eers na al die komentaar op die forum. Daar is drie plekke, onder in jou sump gaurd, voor jou radiator en bo op jou engine. Opinies verskil natuurlik en daar is voor en nadele met almal, maar die een in die sump gaurd na my mening is heeltemal uit. Ek het 'n Cirus IC voor die radiator, want ek het nie tyd gehad om gate te sny en verf werk te reël nie. Die setup werk vir my en die IC voor die radiator is glad nie 'n probleem nie. As jy stadig ry trek die radiator fan darem ook nog 'n bietjie koeler lug deur die IC

.

4x4Maniac · Post by **4x4Maniac** » Mon Jan 30, 2012 2:47 pm

Vlak vark wrote:Trok is reg nuwe head gkoop by part land in pietersburg. Sal vandag probeer on etg gauge en intercooler te bestel. Het gister so 150km gery.alles lyk goed

Bly alles is nou weer reg! jy recover seker nog vd skok?

Donkey · Post by **Donkey** » Mon Jan 30, 2012 7:47 pm

Vlak vark wrote:Trok is reg nuwe head gkoop by part land in pietersburg. Sal vandag probeer on etg gauge en intercooler te bestel. Het gister so 150km gery.alles lyk goed

Glad to hear Nico