Just ordered a half cut 1jz, just wondering about any design flaws or reliability issues with the engine I should know about. From what I read it's more reliable than the 7m, but then again... of all the mkIII's out there probably less than 5% have 1jz swaps. For those of you who own one What should I expect from this engine?
1jz reliability issues?
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504 Posts
can't forget about the front oil seal, but other than that they're the ish..
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4,291 Posts
and it still ran :lol:
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429 Posts
Yep...hard to break this motor.
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1,215 Posts
Coil packs arcing, which was stated, but can easilly be fixed with epoxy over the cracks
Bad ECU can hold injectors open, but can be fixed with a little rewiring
I've heard several people having low oil pressure on startup (myself included), but it's not a big deal, it goes away in 30 seconds.
Your turbos will probably blow white smoke at some point, needing a rebuild or replacement.
the PCV valve fails, it's like a $8 part from the dealership for a 2JZ one that fits right in.
All the gas you'll use because you just can't stop driving the thing
Bad ECU can hold injectors open, but can be fixed with a little rewiring
I've heard several people having low oil pressure on startup (myself included), but it's not a big deal, it goes away in 30 seconds.
Your turbos will probably blow white smoke at some point, needing a rebuild or replacement.
the PCV valve fails, it's like a $8 part from the dealership for a 2JZ one that fits right in.
All the gas you'll use because you just can't stop driving the thing
You'll be fine man, why worry about design flaws or reliability issues when you can just wack in one of those fuel atomisers you are spouting about in that thread you created.TiWo2.0 said:
http://www.supraforums.com/forum/showthread.php?t=367902
Double the horsepower and get even better mileage out of the 100,000+ km engine you just bought with the small outlay of just $1500. It works, you told me so. :iwdumbass
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8,910 Posts
I am very abusive. and I dont think I have abused any motors as much as this one and it has yet to give me any kind of problem. Deff a solid motor.
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2,975 Posts
i love mine never any problems outside of a bad waterpump and it sux to have blown turbos. 1jz>all
~scott
~scott
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999 Posts
Im on my 3rd ps pump, but think I could've salvaged the 2nd one, I just didn't want to, was really pissed at the time. You can drive the hell out of this motor and then some and all you'll do is eat gas...its a wonderful motor. Its my only car (for now) and I used to commute 70 miles daily in rush hour, you will have no problems whatsoever....maybe just speeding tickets lol
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1,095 Posts
drove mines on about 1.5 quarts of oil for about 4-5 months due to lack of time and ended up spinning ONE bearing and still driving it for 2-3 weeks and changed blocks....no problems so far except for the turbo seals that blew when the wastegate line popped off and i was driving trying to figure out why is it missfiring at high rpm lol then saw it was going up to 1 bar and cutting
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