What I've noticed from the 70,s to now in four wheel drive owners seem to have a monster truck attitude and push and abuse their gear until catastrophic failure when I was kid no one had the money to replace anything so we took care of our Tojo,s and Landy,s or it could mean your life if you got stuck in the middle of nowhere attitudes have really changed.
Toyota lightened the pistons as part of reducing emissions. With extended towing the exhaust gas temperatures could rise and damage the pistons resulting in failure. This occurred to my standard non modified 3.0 litre D4D doing a three week trip towing a 1.5t camper trailer. Turns out I should have fitted a pyrometer and monitored this. No mention of this in the manual. However Toyota did go back to heavier reinforced pistons towards the end of the 3.0 litre model run. European Toyota dealer service bulletins recommended against fitting standard pistons when overhauling this engine. Before this trip I had serviced this vehicle from new; 5k oil and filter changes and new injectors as a precaution. Motor was in good condition with minimal carbon in the intake. Conclusion: not fit for purpose. Not good enough for a $55k investment. These are not a highly stressed engine compared to others. The company I chose, that rebuilds these engines refuses to put OEM pistons back in. A large percentage of their work is rebuilding 3.0l D4D that have had this failure.
I've taught you well,l just had my old mate ring saying his done his 4 cylinder engine in a iveco at low km,new engine he said was a bit sluggish without the chip. I told him get the bigger engine if you want to tow your 5th wheeler.
The real issue is the gap between the Landcruiser and Prado in price and performance. If you want to see this country and you have kids you have to tow in most cases. It a marketing strategy. So they push the 4 cylinder hard tune it down when first released tweak it too increase power and torque for future releases and increase tow weight. Modifying that further with chips tunes and remaps is just stupid unless your loaded. Put a v6 diesel auto in the Prado and see how many Landcruisers sell-
You're the best. It's so simple but people don't get it. Everyone just tries to find an excuse for anything that goes wrong. The truth is that the only thing unreliable about any toyota is actually the owner.
I had a px ranger 3.2, tuned and guess what? It ended up with a cracked head at 150000km. Now got a 200 series, nice big engine for towing and I'm not going to mess with it!
Hi Anthony, love your videos. Wish I had found them sooner before doing all my mods, unfortunately already fitted most of the mods. if you have already had a remap and you don’t tow or drive your vehicle hard would this crack piston? I have been driving it for around 20000km since the remap but now concerned that I could damage a piston on my KD 120
Modifying an engine from standard will pretty much always increase the risk of failure. Servicing is critical. But how you drive and how much stress you put on components is also critical. You can tow heavy loads but if you want the engine to last don't push it too hard. Your coolant system needs to be operating perfectly and it's a good idea to watch it. And if it's a 40 degree plus day ask yourself do I need to tow this now? And if you do then drive to reduce heat. Heat is the thing that will crack pistons and blocks faster than anything else. And a lean mixture combined with excess heat is asking for trouble. Cheers mind you some engines are simply badly designed engines and there is allot of freely available information about these engines. Oh and lastly towing isn't the major source of stress a well maintained 4wd will face. In fact in terms of stress on a vehicle it can be a non issue if you consider the points I have made above. What will really kill a 4wd fast is high loads and low speed. Flogging a vehicle in sand and mud. Flogging it in low range climbing where everything gets so hot the exhaust pipes glow and because your crawling the underbonnet temperatures reach Mercury. Keep it cool and generally you will stay cool. Cheers all
@fourby4diesel Hey mate I have a 2013 150 series Prado, and it as oil leak around intake side of the turbo... have you sen this issue and what will cause this? Should I be worried?? Do you have videos on that?
Toyota want 4 details when doing a pre-claim for cracked pistons. 1) Accessories & Mods (inc. Genuine) 2) Towing Percentage & KM’s per month 3) Towing Weight 4) Driving City Type or Highway inc percentage.
Hi! It does'nt matter, who it is... Ford, GM, Chrysler, Mercedes Benz, VW... Toyota... TOO MUTCH Power for too less Displacement... Too small and too light Engine-Parts for better Fuel-Consumtion...very thin Aluminium-Walls in the Block/Cylinder Head, AND the DPF, CAT and the other installed Tech, that all kills a long Engine-Livetime... More parts, more failors... And they have NO interest on "Longlive-Cars"... Cars with 500000Miles on the Odo... HISTORY FOR EVER... They want and must to sell cars... More then ever... THATS THE WHOLE TRUTH...
This is quite a common thing with Toyota 3 litres from 2005 I have repaired numerous in standard trim no mods,they tend to crack along the gudgeon pin and work there way up the pistons are a weak point.
@@Fourby4Diesel not always have seen them with over a million km and still running in Taxi buses but I have seen them cracked with less than 100 000km as well I have also seen a few 2.8 naturals crack no 4 piston as also.
The pistons are cracked due to bowl design and the cracking usually starts in the top of the piston pin bore ( note all cracks are inline with the pin axis) . Tuning will speed up the cracking process but is not the reason for the failure.
That's 100% correct. And just to add to that, Toyota has superseded those pistons with a new thicker walled piston due to the cracking issue. There is a Toyota bulletin out on this issue.
Bowl design is fine, very common design and for a reason. DI's need it. Piston design is an issue, not the bowl. Look at the bigger issue in the soot......
Four wheelers,,, if you're serious about getting out in the open air,,, must have at least 6 cylinders,,,, I can't fault my 97 rd28,,, upgrade on air intake, exhaust, next turbo after factory, 1/8th turn on fuel,,,, sitting at 390000kms,, 200000 kms since upgrade still not 1 little issue,,,, regular maintenance,,,, but yeah, it is a patrol!!!!! Love your no bullshit attitude dude!!!!!!
A deep dished piston experiences extreme radial pressure that is completely absent in a domed piston. If you have pressure spikes due to overfueling then the piston will crack in that manner. I think if you were to put a pressure transducer in the combustion chamber and run the engine on an engine dyno you would be shocked.
Most of the remapping expert tuners have no idea what they are doing. They overfuel and engines run very hot, sure you will get more power but it comes at the expense of reducing the longevity of your motor. Remapping with a proper diesel expert who understands diesel engines can set up a vehicle for max power output without overfueling but most tuners have plenty of experience on petrol engines but not diesel.
You will never hear of a cracked piston on a stock standard untouched regularly maintained TOYOTA. All the crap people add are the causes of unreliability.
I'm quite surprised the crank doesn't let go after the retunes rechip in these motors with the added torque and power towing some of the big asks these owners expect these vehicles to do. Especially with these vehicles weighing 2 tonnes and they expect them to tow another 2 tonnes or more on top of that
once again some very good advice on both the towing capability of these under powered 4wd's and the flogging they have to do to tow these vans , the tunning is just a disguise to the real problems hidden inside ,, sloppy service work is another issue , incorrect oil's and non expert rebuilding the motor ,, tip buy a long motor and you got a warranty at least
So, lets look at the bits not harped-on about. #2 piston is not from that engine, very different piston. Common issues for blowing a particular piston (ZD30's blow/melt #4 thanks to EGR and poor design (Less air in back pot, same fuel, gets hotter than rest)) need to be looked at when pushing more than stock. Yes, those pistons have a design flaw wich can be seen with "Straight Cracks" in same spots above the pins. What is also seen is the there is too much fuel being added too late and its spraying on the tops rather than into the bowl. Tuning needs a lot of work along with understanding. Too many tuners without dyno's who are plug-n-play while not understanding the dynamics.
That is true the engine is undersized for the size of a large four-wheel-drive simple as that if it was just a vehicle no towing probably OK for example a hilux but what people ask of them is way too much
I think its foolish to blame ECU remaps for Toyota's weak piston design. It would be like going to a Doctor for an ingrown toenail and the Doctor blaming the ingrown toenail on smoking 🤔 Perhaps you guy's should visit some of the reputable diesel performance workshops in Thailand sometime. Those guy's know how to build and tune Diesels.
Agree. Instead recommend a piston with a better design that will last longer or has the issue fixed. Irrelevant if the engine is tuned or not. I want the best parts for my engine.
My question is if it’s a weak piston design why is it that most engines lost for many hundreds of thousands of kilometers with no problem how can a week pissed and do that?
Personally I think it’s foolish to believe that the piston design is weak the combustion process happens trillions of times a month in these engines run for many many months and many many years and many many hundreds of thousands of kilometers how can you even think or believe that the piston design is weak
Why open it up and only do 1 piston? "Do it right the first time" Shouldve done 4 pistons and 4 injectors Dyno tune on other vehicles do not crack pistons, its only on 1kd, go figure, its not the tune, its the motor. A known issue with these 1kds
Nothing wrong with a remap, can even drop cylinder pressures and temps if done right. Most so called stage 1 tunes actually allow the motor to run all the way up its already factory installed mapping and parameters, that are then limited for emissions, transmission capabilities, hell some cars have identical running gear from model to later model but are pulled back so they can say the new one has more power. It's bone head drivers. Fit a pyrometer, drive it with some sense. Reason remapped engines.blow is they are no longer idiot proof, or the so called tuner has no idea what he's doing. I know plenty of, including myself running much much more fuel and boost through small displacement diesels and they work perfectly fine. As I don't rape it at every set of lights just cause I can, sure it might not last 400km like a stocker, but it sure isn't magically going to crack a piston.
And you don’t probably use it longer trips touring Australia or Towing you can often get away with extra performance for people that just go to work and back
One or a few lucky that I only go to work and back or to the drags isn’t a fair test comparing To the engines and the ones that do fail need to be used heavy touring loaded
Wow it's a Toyota ffs that engine should last 500,000km! Just leave it alone and trust Toyota Engineers not some chip. My now 24 yrs old 320,000km+ 5vzfe still runs like new and it's not even a Diesel powerplant. Pro tip: leave it alone and keep stock. Change oil every 5000km. th-cam.com/video/LguQou_2RFw/w-d-xo.html Good on you to highlight these "problems"
@@Fourby4Diesel oh definitely agree with that. I have a stock as a rock low k grandma 120 series in currently with a dead set picture perfect matching holed crack as your one ..
Well I had a 3.0 D4d with 350k km never chipped or mapped 100% factory. Suddenly lost compression on piston 4. It hairline cracked clean in half. When toyota rebuilt the engine the bearings were 100%, They couldn't explain why it happened. Maybe toyota just build shitty engines sometimes.
![[TH] VCT Masters Shanghai Playoffs DAY 2 // PRX vs G2 | EDG vs TH](http://i.ytimg.com/vi/T5j2XVcDFs0/mqdefault.jpg)
What I've noticed from the 70,s to now in four wheel drive owners seem to have a monster truck attitude and push and abuse their gear until catastrophic failure when I was kid no one had the money to replace anything so we took care of our Tojo,s and Landy,s or it could mean your life if you got stuck in the middle of nowhere attitudes have really changed.
Awesome. another great informative video again, really appreciate your no bs content.
Toyota lightened the pistons as part of reducing emissions. With extended towing the exhaust gas temperatures could rise and damage the pistons resulting in failure. This occurred to my standard non modified 3.0 litre D4D doing a three week trip towing a 1.5t camper trailer. Turns out I should have fitted a pyrometer and monitored this. No mention of this in the manual. However Toyota did go back to heavier reinforced pistons towards the end of the 3.0 litre model run. European Toyota dealer service bulletins recommended against fitting standard pistons when overhauling this engine. Before this trip I had serviced this vehicle from new; 5k oil and filter changes and new injectors as a precaution. Motor was in good condition with minimal carbon in the intake. Conclusion: not fit for purpose. Not good enough for a $55k investment. These are not a highly stressed engine compared to others. The company I chose, that rebuilds these engines refuses to put OEM pistons back in. A large percentage of their work is rebuilding 3.0l D4D that have had this failure.
Sounds like what Peter would say 😂
Thanks for the information Anthony👍
Another great Video... Totally agree with you that people want more torque out of these 4 cylinder engines.. Keep them coming.
Tuner Chip, Check. Rolling coal, Check. Load the heck out of it , Check. Bang!
I've taught you well,l just had my old mate ring saying his done his 4 cylinder engine in a iveco at low km,new engine he said was a bit sluggish without the chip. I told him get the bigger engine if you want to tow your 5th wheeler.
The real issue is the gap between the Landcruiser and Prado in price and performance. If you want to see this country and you have kids you have to tow in most cases. It a marketing strategy. So they push the 4 cylinder hard tune it down when first released tweak it too increase power and torque for future releases and increase tow weight. Modifying that further with chips tunes and remaps is just stupid unless your loaded. Put a v6 diesel auto in the Prado and see how many Landcruisers sell-
Bloody legend 🤘
You're the best. It's so simple but people don't get it. Everyone just tries to find an excuse for anything that goes wrong. The truth is that the only thing unreliable about any toyota is actually the owner.
I had a px ranger 3.2, tuned and guess what? It ended up with a cracked head at 150000km. Now got a 200 series, nice big engine for towing and I'm not going to mess with it!
Until it gets dusted.....
Absolutely love your videos I have an 03 120 series GXL, where are you guys based?
True, my 2013 hard driven 170,000 km young 1KD Hilux does not use one ounce of oil from one 7500km oil change to another!
Thank God..................at last someone who understands you can only wring so much power out of a certain amount of cubic inches!!!!
Hi! Right! Downsizing costs Engine Livetime... One, two, three Turbo's on 1Liter Displacement... Thats it!!! 😎
Hi Anthony, love your videos. Wish I had found them sooner before doing all my mods, unfortunately already fitted most of the mods. if you have already had a remap and you don’t tow or drive your vehicle hard would this crack piston? I have been driving it for around 20000km since the remap but now concerned that I could damage a piston on my KD 120
Modifying an engine from standard will pretty much always increase the risk of failure. Servicing is critical. But how you drive and how much stress you put on components is also critical. You can tow heavy loads but if you want the engine to last don't push it too hard. Your coolant system needs to be operating perfectly and it's a good idea to watch it. And if it's a 40 degree plus day ask yourself do I need to tow this now? And if you do then drive to reduce heat. Heat is the thing that will crack pistons and blocks faster than anything else. And a lean mixture combined with excess heat is asking for trouble. Cheers mind you some engines are simply badly designed engines and there is allot of freely available information about these engines.
Oh and lastly towing isn't the major source of stress a well maintained 4wd will face. In fact in terms of stress on a vehicle it can be a non issue if you consider the points I have made above. What will really kill a 4wd fast is high loads and low speed. Flogging a vehicle in sand and mud. Flogging it in low range climbing where everything gets so hot the exhaust pipes glow and because your crawling the underbonnet temperatures reach Mercury. Keep it cool and generally you will stay cool. Cheers all
what do you think of the vdj engines?
4/D. These D- 4D donks were a marine engine designed by 'Yanmar' in Japan ! Best use is for a boat anchor mista ? V.
@fourby4diesel Hey mate I have a 2013 150 series Prado, and it as oil leak around intake side of the turbo... have you sen this issue and what will cause this? Should I be worried?? Do you have videos on that?
Toyota want 4 details when doing a pre-claim for cracked pistons.
1) Accessories & Mods (inc. Genuine)
2) Towing Percentage & KM’s per month
3) Towing Weight
4) Driving City Type or Highway inc percentage.
Hi! It does'nt matter, who it is... Ford, GM, Chrysler, Mercedes Benz, VW... Toyota... TOO MUTCH Power for too less Displacement... Too small and too light Engine-Parts for better Fuel-Consumtion...very thin Aluminium-Walls in the Block/Cylinder Head, AND the DPF, CAT and the other installed Tech, that all kills a long Engine-Livetime... More parts, more failors... And they have NO interest on "Longlive-Cars"... Cars with 500000Miles on the Odo... HISTORY FOR EVER... They want and must to sell cars... More then ever... THATS THE WHOLE TRUTH...
Is it possible to tell if an engine has been remapped (by a previous owner)? Can it be returned to factory mapping?
Any differences between the 127kw and 140kw versions of these engines?
Does the 1-gd-ftv 2.8 also suffer from cracked pistons?
This is quite a common thing with Toyota 3 litres from 2005 I have repaired numerous in standard trim no mods,they tend to crack along the gudgeon pin and work there way up the pistons are a weak point.
The Are a weak point but sometimes takes 20 to 30 laps around Australia and 400,000k to crack one that makes sense
@@Fourby4Diesel not always have seen them with over a million km and still running in Taxi buses but I have seen them cracked with less than 100 000km as well I have also seen a few 2.8 naturals crack no 4 piston as also.
The pistons are cracked due to bowl design and the cracking usually starts in the top of the piston pin bore ( note all cracks are inline with the pin axis) . Tuning will speed up the cracking process but is not the reason for the failure.
That's 100% correct. And just to add to that, Toyota has superseded those pistons with a new thicker walled piston due to the cracking issue.
There is a Toyota bulletin out on this issue.
Bowl design is fine, very common design and for a reason. DI's need it. Piston design is an issue, not the bowl. Look at the bigger issue in the soot......
Sicaflex it 🤣🤣🤣👍👍👍👍
Can you change pistons in a hilux leaving the engine in the chassis ?
So when you crack a piston, do you need to bore the cylinder sleeves? Or can you just drop another piston in?
If you’re not gonna go to the new engine, the next best thing you can do if the bore looks OK drop four Pistons in
Four wheelers,,, if you're serious about getting out in the open air,,, must have at least 6 cylinders,,,, I can't fault my 97 rd28,,, upgrade on air intake, exhaust, next turbo after factory, 1/8th turn on fuel,,,, sitting at 390000kms,, 200000 kms since upgrade still not 1 little issue,,,, regular maintenance,,,, but yeah, it is a patrol!!!!!
Love your no bullshit attitude dude!!!!!!
A deep dished piston experiences extreme radial pressure that is completely absent in a domed piston. If you have pressure spikes due to overfueling then the piston will crack in that manner. I think if you were to put a pressure transducer in the combustion chamber and run the engine on an engine dyno you would be shocked.
Most of the remapping expert tuners have no idea what they are doing. They overfuel and engines run very hot, sure you will get more power but it comes at the expense of reducing the longevity of your motor. Remapping with a proper diesel expert who understands diesel engines can set up a vehicle for max power output without overfueling but most tuners have plenty of experience on petrol engines but not diesel.
A few shops making a buck out of engine tunes/ecu tunes. A lot of shops making a fortune on rebuilding those engines some as early as 20 to 50k.
Is there any after market pistons available that could be used in these motors
Yes there is, Ive just rebuilt with modified genuine pistons (Machined) For this issue
@@tom6549 please do tell me more.
Is there a link to a article?
Thank you in advance
Ive jus passed 5k on my new Great Wall 2wd single cab..V200 4cyl turbo...its willing to a point..and I accept that.
Should’ve a brought a v6 petty
If remaps are the main cause as you say why isn’t every other diesel known for cracking pistons??
Plenty are
@@Fourby4Diesel like?
Doesn’t seem anywhere near as common as the 1kd. Toyota even redesigned the piston due to it
You will never hear of a cracked piston on a stock standard untouched regularly maintained TOYOTA. All the crap people add are the causes of unreliability.
There's no replacement for displacement.
what do Aussies consider heavy tow? no one I know here uses a toyota to tow.
people should tow at 80 or 90, decent performance, then you won't need a remap, and safer traveling
I'm quite surprised the crank doesn't let go after the retunes rechip in these motors with the added torque and power towing some of the big asks these owners expect these vehicles to do. Especially with these vehicles weighing 2 tonnes and they expect them to tow another 2 tonnes or more on top of that
Crankshaft does sometimes break.
And 45c and a head wind!
once again some very good advice on both the towing capability of these under powered 4wd's and the flogging they have to do to tow these vans , the tunning is just a disguise to the real problems hidden inside ,, sloppy service work is another issue , incorrect oil's and non expert rebuilding the motor ,, tip buy a long motor and you got a warranty at least
So, lets look at the bits not harped-on about. #2 piston is not from that engine, very different piston. Common issues for blowing a particular piston (ZD30's blow/melt #4 thanks to EGR and poor design (Less air in back pot, same fuel, gets hotter than rest)) need to be looked at when pushing more than stock. Yes, those pistons have a design flaw wich can be seen with "Straight Cracks" in same spots above the pins. What is also seen is the there is too much fuel being added too late and its spraying on the tops rather than into the bowl. Tuning needs a lot of work along with understanding. Too many tuners without dyno's who are plug-n-play while not understanding the dynamics.
Absolutely it’s from that engine
First cracked #4 only at 102,000k SteinBauer chip
Car 2.5 years old.
Then in Another car it did that in
Spot on. Too many flogs flogging their motors
Any reason they crack on the same axis ?
Where all the force is ie.over the gudgeon pin.
The crack is aligned with gudgin pin weaker here.
Yup - across the gudgeon pin, kind of ‘folding’ down around it.
performance chips = increased fuel rail pressure - never trust a chip.
These gutless underpowered engines are just too small for a heavy 4wd. Toyota should make a 6 cylinder.
That is true the engine is undersized for the size of a large four-wheel-drive simple as that if it was just a vehicle no towing probably OK for example a hilux but what people ask of them is way too much
Question ❓ is do Thay learn
I think its foolish to blame ECU remaps for Toyota's weak piston design.
It would be like going to a Doctor for an ingrown toenail and the Doctor blaming the ingrown toenail on smoking 🤔
Perhaps you guy's should visit some of the reputable diesel performance workshops in Thailand sometime. Those guy's know how to build and tune Diesels.
Agree.
Instead recommend a piston with a better design that will last longer or has the issue fixed.
Irrelevant if the engine is tuned or not.
I want the best parts for my engine.
My question is if it’s a weak piston design why is it that most engines lost for many hundreds of thousands of kilometers with no problem how can a week pissed and do that?
Personally I think it’s foolish to believe that the piston design is weak the combustion process happens trillions of times a month in these engines run for many many months and many many years and many many hundreds of thousands of kilometers how can you even think or believe that the piston design is weak
Yanmar is a Chinese company there made china thay have contracts with may names Toyota Hyundai kaboto and so forth
Double the hoarse power half the engine life
Horse
Why open it up and only do 1 piston?
"Do it right the first time"
Shouldve done 4 pistons and 4 injectors
Dyno tune on other vehicles do not crack pistons, its only on 1kd, go figure, its not the tune, its the motor.
A known issue with these 1kds
Nothing wrong with a remap, can even drop cylinder pressures and temps if done right. Most so called stage 1 tunes actually allow the motor to run all the way up its already factory installed mapping and parameters, that are then limited for emissions, transmission capabilities, hell some cars have identical running gear from model to later model but are pulled back so they can say the new one has more power.
It's bone head drivers. Fit a pyrometer, drive it with some sense.
Reason remapped engines.blow is they are no longer idiot proof, or the so called tuner has no idea what he's doing.
I know plenty of, including myself running much much more fuel and boost through small displacement diesels and they work perfectly fine. As I don't rape it at every set of lights just cause I can, sure it might not last 400km like a stocker, but it sure isn't magically going to crack a piston.
And you don’t probably use it longer trips touring Australia or Towing you can often get away with extra performance for people that just go to work and back
One or a few lucky that I only go to work and back or to the drags isn’t a fair test comparing To the engines and the ones that do fail need to be used heavy touring loaded
Wow it's a Toyota ffs that engine should last 500,000km! Just leave it alone and trust Toyota Engineers not some chip. My now 24 yrs old 320,000km+ 5vzfe still runs like new and it's not even a Diesel powerplant. Pro tip: leave it alone and keep stock. Change oil every 5000km. th-cam.com/video/LguQou_2RFw/w-d-xo.html
Good on you to highlight these "problems"
theses a tsb on them cracking from toyota without chips or tunes
With old flogged Injectors causing wrong combustion
@@Fourby4Diesel have you seen the tsb ?
How can I send it to you ?
So much more common faster with chip/tune/ add towing
@@Fourby4Diesel oh definitely agree with that.
I have a stock as a rock low k grandma 120 series in currently with a dead set picture perfect matching holed crack as your one ..
@@Fourby4Diesel as for those that insist on running chips .. keeps us busy 👌
Well I had a 3.0 D4d with 350k km never chipped or mapped 100% factory. Suddenly lost compression on piston 4. It hairline cracked clean in half.
When toyota rebuilt the engine the bearings were 100%, They couldn't explain why it happened.
Maybe toyota just build shitty engines sometimes.
Old flogged injectors
Not always #4
Far from it
Blocked port is also a contribution in those cases.
Less air, same fuel.
Think!!
Can’t wait for a good decent electric dual cab in 15 years. Electric motors are much better