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Originally Posted by 2JZ Beast
my engine go tdamaged during testing, so looking for a new one, any help? it was bored to 3.3 already could i go 3.5 cause two pistons got damaged, the connecting rod broke during the run. i am desperate.
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Regarding your damaged engine, you could either go with a used jdm aristo 2jz-gte longblock (about $3k), or a new shortblock from 'yota (about $2400).
Regarding the bore #s you quoted, was that inches or Liters? I'd have to assume you're talking about liters, because a bore of 3.3" would be less than the oem bore size of 86mm=3.385827". If you are talking about liters, please note that an increase in bore alone can't take the 2jz-gte to 3.3L. Again, oem bore size is 86mm. 1st overbore is 86.5mm, and then max adviseable overbore 87mm. This is only a 1.2% increase, which means your new engine goes from 3L to 3.
04L. I've heard that an 87.5mm or 88mm overbore is possible, but I've also heard of cracked cylinder walls, so personally I wouldn't recommend it. Even with an 88mm overbore (a 2.3% increase), you're still only looking at 3.
07L. The only way to get to 3.3L or 3.4L is to install a stroker kit (but your profile doesn't mention stroker). Fwiw, I've never heard of 3.5L even with a stroker...
Lastly, I can't help but comment that you must have been either spraying a hellacious amount of no2 (a 200 shot???), or spraying under 3k rpms (or both) to break a 2jz-gte connecting rod...be sure to tell your tuner that he needs to to retard the timing based on the size of the shot (for a 200 shot, you should be retarded by at least six to eight degrees from a conservative boost-only curve),
and to never spray under 3k rpms*. If you're spraying that 200 shot all at once, consider installing a progressive controller...it's harder on the solenoids, but
much easier on the engine...
*Note that a very small shot (eg 50-shot), or a progressive shot can be safely sprayed at 2500-2800 rpms, if properly tuned, but the general rule for a straight shot in a 2jz-gte, with anything even in the ballpark of an oem timing curve, is no no2 under 3k.