anyone ever blown their engine??????
02-15-11, 08:53 PM
#16
the 1uz is pretty bullet proof, i ran the motor 10k miles without changing the oil once, there was only like 2 quarts left in the motor, i've red lined it a couple of times when i wasnt paying attention to the rpm meter and my motor is well over 300k
02-15-11, 09:21 PM
#17
Dont quote me on this but I read something, somewhere that said that as to Toyota's knowledge, to date, there has never been a report of catastrophic engine failure in any vehicle with a 1uz (gs400, ls400, sc400, soarer, aristo, celsior and crown majestic) that hasnt been proven to have been missused or abused.
I just spent about 20 mins trying to find that article with no luck. If anyone else can find it, please post the link.
I just spent about 20 mins trying to find that article with no luck. If anyone else can find it, please post the link.
lol 10 000 miles? why would u wait so long.
300 000 miles is something very few engines ever see, impressive
02-15-11, 09:23 PM
#18
02-15-11, 09:57 PM
#19
It's like comparing apples to oranges when determining the reliability of said motor. Comparing an OEM motor to one that's been modded introduces different elements when calculating how reliable a motor is. Yes, Toyotas can go 250k+ miles quite easily, then that can be said about the majority of major manufacturers today. Once you talk about forced induction, it's a totally different realm.
I have not personally experienced a blown motor; it's not a matter of "if" but "when", I know my day will come soon. However, I do know of several people that have been through motors. These motors saw nearly 40 pounds of boost, so they were basically ticking time-bombs. The current motor my friend has is regularly making around 1100 horsepower at around 38 pounds of boost. Is the motor reliable? I would say so, it has about 8000 - 10000 miles (street and race miles) on the last build. It's due for a freshening up at the end of the season.
As with anything else. If you have proper supporting mods, a correct tune and if you develop an acute sense of listening and feeling your motor you can eliminate many things that can go wrong. One of the most important things is to have supporting fuel and a means of measuring AFR's.
I have not personally experienced a blown motor; it's not a matter of "if" but "when", I know my day will come soon. However, I do know of several people that have been through motors. These motors saw nearly 40 pounds of boost, so they were basically ticking time-bombs. The current motor my friend has is regularly making around 1100 horsepower at around 38 pounds of boost. Is the motor reliable? I would say so, it has about 8000 - 10000 miles (street and race miles) on the last build. It's due for a freshening up at the end of the season.
As with anything else. If you have proper supporting mods, a correct tune and if you develop an acute sense of listening and feeling your motor you can eliminate many things that can go wrong. One of the most important things is to have supporting fuel and a means of measuring AFR's.
02-15-11, 10:02 PM
#20
lol i agree! i did the same ******!! the oil was super black and once in a while the low oil light would flicker for a sec. so i did it at my friends. we pored the oil back into the empty quarts and was only filled 2 qrts!! my heart dropped cuz i was beating the hell out of it! the motor still ran Strong and very Smooth! it was a 95 sc400 with 193k.. wat a beast!!
A $20 - $30 oil and filter change beats replacing a motor.
02-16-11, 07:49 AM
#21
It's like comparing apples to oranges when determining the reliability of said motor. Comparing an OEM motor to one that's been modded introduces different elements when calculating how reliable a motor is. Yes, Toyotas can go 250k+ miles quite easily, then that can be said about the majority of major manufacturers today. Once you talk about forced induction, it's a totally different realm.
I have not personally experienced a blown motor; it's not a matter of "if" but "when", I know my day will come soon. However, I do know of several people that have been through motors. These motors saw nearly 40 pounds of boost, so they were basically ticking time-bombs. The current motor my friend has is regularly making around 1100 horsepower at around 38 pounds of boost. Is the motor reliable? I would say so, it has about 8000 - 10000 miles (street and race miles) on the last build. It's due for a freshening up at the end of the season.
As with anything else. If you have proper supporting mods, a correct tune and if you develop an acute sense of listening and feeling your motor you can eliminate many things that can go wrong. One of the most important things is to have supporting fuel and a means of measuring AFR's.
I have not personally experienced a blown motor; it's not a matter of "if" but "when", I know my day will come soon. However, I do know of several people that have been through motors. These motors saw nearly 40 pounds of boost, so they were basically ticking time-bombs. The current motor my friend has is regularly making around 1100 horsepower at around 38 pounds of boost. Is the motor reliable? I would say so, it has about 8000 - 10000 miles (street and race miles) on the last build. It's due for a freshening up at the end of the season.
As with anything else. If you have proper supporting mods, a correct tune and if you develop an acute sense of listening and feeling your motor you can eliminate many things that can go wrong. One of the most important things is to have supporting fuel and a means of measuring AFR's.
with all the people here boosting and supercharging I figured there has to be people blowing their engines.
I see people saying things on there signature like "boosting daily" and I say I wonder how long the engine can take it.
anyways thanks for the response
Monitoring oil is a key component when expecting a motor to be reliable. It's best to keep oil full and changed at regular intervals. Letting oil run low means there's less oil to lubricate and cool moving parts; having a lower volume also means the oil in the pan will get contaminated much quicker. Damage that can be done that's not initially apparent over time are spun bearings.
A $20 - $30 oil and filter change beats replacing a motor.
A $20 - $30 oil and filter change beats replacing a motor.
02-16-11, 07:41 PM
#27
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IMO these are one of the best motors i have had the privelage of working on. Ive built quite a few domestic and import motors, ex: chevrolet small blocks and big blocks, ford small blocks, and a mitsubishi eclipse motor (worst POS ever). If you keep up with the maitnence and treat it right it will treat you right, even if you decide to have some fun, it always seems like the 1uz wants more abuse. My grandfather who has built stock car motors for 40+ years is absolutly amazed with these motors, I remember the first weekand I got my car, we took it all the way apart to the block and put it all the way back together. For a car with 148,xxx miles it seemed like it was brand new. I have only heard of one case of a blown 1uz though.
02-17-11, 08:00 AM
#28
IMO these are one of the best motors i have had the privelage of working on. Ive built quite a few domestic and import motors, ex: chevrolet small blocks and big blocks, ford small blocks, and a mitsubishi eclipse motor (worst POS ever). If you keep up with the maitnence and treat it right it will treat you right, even if you decide to have some fun, it always seems like the 1uz wants more abuse. My grandfather who has built stock car motors for 40+ years is absolutly amazed with these motors, I remember the first weekand I got my car, we took it all the way apart to the block and put it all the way back together. For a car with 148,xxx miles it seemed like it was brand new. I have only heard of one case of a blown 1uz though.
thanks for the response
07-13-11, 01:50 PM
#29
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Heh, they are really that good! Toyota put a lot of r&d into the 1uzfe and its reliability is legendary. That's not saying they wont ever experience catastrophic failure, though.
The motor BenStoked mentioned was not a 1uz.
Detonation is also called "knocking" and occurs for various reasons like running too lean for example.
The motor BenStoked mentioned was not a 1uz.
Detonation is also called "knocking" and occurs for various reasons like running too lean for example.
Running lean causes combustion temps to go uncontrolled and will lead to melting piston crowns...warped head, block and cracked rings.
Generall,y any car that has a halfassed maint. schedule should last 150,000+
Last edited by 2003is300; 07-13-11 at 01:55 PM.
