Engine Unorthodox crank pulley...dangerous?

Unorthodox crank pulley...dangerous?

I was looking into if anything else cost effective can help my reliable 1zzfe. What I found was the unorthodox crank pulley. From what I've read, if a crank pulley doesn't have the harmonic dampener, the crank shaft can wear down very fast and even break. I assume the unorthodox crank pulley doesn't have the dampener...but I'd like to ask anyway; does anyone here have it on their car? is your car DEAD?

I don't trust underdrive crank pulleys. Read up on them on newcelica.org, since they have the same engine.

same here a bit risky, your choice, keep running,or kill your motor.

except that toyota pre-balances their cranks before they head out...... (at least they did for the 4ag's)..... i've heard from a couple shops that toyota balances their cranks better than anyone else..... hence, there is less need for a harmonic balancer as long as the pulley and flywheel are balanced......

for example, 4ag's don't even have (that i've ever seen) harmonic balancers.....

yeah but what's the life expectacy of the engine?

Mine has 125k on it..runs beautifully.

I went with a lightweight pulley with my older Celica (3SGE) and put one about 115K with pulley before I sold it (~225K total). All the OEM engines I've worked on had a harmonic damper - but like toyotaspeed90 mentioned, Toyota makes very good and well designed engines - you may not see any problems. On an older 4AGE, 3SGE, and variants of them - I wouldn't worry too much, always had big power potential and responds well to tuning. On the newer 1ZZFE and 2ZZGE - I'd find other ways to make extra power, a bit risky given ther other little problems this series of engines had. But it is your call in the end.