Yaris Intake Manifold

[Tamago]

Originally Posted by richardholdener

I am helping the community out by findin gout exactly what caused the probelm before jumping on the speculation bandwagon. The boost level did not hurt the motor nor the length of time spent at any given boost level. There had to be some type of ignition error that that resulted in excessive timing. We are looking into this and will report if we find the answer.

ok i guess that's a non answer ;) stock 1NZ rods break on fully stock xA/B's due to high RPM's for extended periods of time. toyota fixed this by giving you Yaris people taller gears (better highway cruising) ..

if you read the write-up done by elprototypes on boosting the 1NZ the rods are the first things to go. the engine is over-square and offset crank which causes piston slap (which is obviously made worse by boost) and ultimately rod failure. there is no "speculation bandwagon" on the 1NZ.. it's been around almost 10 years..

is this your first 1NZ vehicle, Richard?