Laser etched timing marks on a pressed on pulley with no keyway? Sounds smart.05plsrt4 said:
Improper tuning with big HP increases cause oil pump failures also using the wrong thickness of oil, boost spiking, cold revving and increased rev-limts will cause the same failure. A powdered metal oil pump cannot handle large increases in power and even the slightest detonation at 50+ HP more than stock can cause these gears to shatter. The only answer for big power increases is an external dry or wet sump oiling system. Guys are willing to spend 1000's for power but not spend about 1000 once to solve this problem. One engine rebuild is much more than porper oiling. Solid aftermarket crank pulleys have nothing to do with the failure, the oil pumps fail with a stock pulley, that goes for the SRT4, Honda engines or any engine with gerotor type pump. Aftermarket dampers will not help either, especially since they are not tuned to the smaller engines properly, not to mention they are heavier than the stock pulley and cause losses in power from beign heavier. Last but not least they cost twice as much as a stock or quality underdrive pulley.05plsrt4 said:since the underdrive pulleys without a damper are possibly causing oil pump failures
That is what happens when a domestic V8 company tries to dable in sport compact engines. No common sense. I've got a flux capacitor I can sell you toojasonsrt4 said:Laser etched timing marks on a pressed on pulley with no keyway? Sounds smart.05plsrt4 said:
This is also around the peak torque area where detonation is most prevalent.ptperformance said:There is a bad spot in our motors at 4200 and 6700 RPM.
The move through the bad spots quick enought or are not held there like some dynos do for tuning. To be totally honest I have not idea. I didn't have a 500 WHP SRT4 when we did our testing for the pully. It was a stock one. The company that did the testing for us (BHJ) has done this for many other vehicles in the past and have a very good rep for getting it "right".SpeedEuphoria said:
yes it has a seperate hub. a few of the 2.0/2.4 swapped 1gs are running the ATI, the only gripe they have is they dont have a alternator only pulley.05plsrt4 said:They are possibly using a damper for a different vehicle with a hub that fits ours.