Some questions
1.) What was happening when you noticed it? Right after running 6500 RPMs ? Right after a 4 hour road trip?

2.) How many miles on it since it was installed?

3.) Are there any other issue that started at the same time? Any no matter how small, a hesitation, dead spot or vibration that was not there before.

Just cause a engine was built by pro does not mean a mistake was not made. There are so many things that can go wrong. Most involve mis comunication. Example: Tech thinks he is installing a rod bolt made from a steel that can handle 250,000 PSI but because the wrong part was shipped he is now over torguing a set of bolts that can only handle 150,000 PSI. Just a matter of time till those over tighened nuts come loose.

New engines can equal green castings. Green casting is a term we use when the casting still has stress in it from the casting process. If you machine a green casting they can and will move after. This could effect line bore for either the crank or the cam.


I am not trying to scare you I just want you to go into problem with a open mind. With the info you have given so far anyone of the above post could be right. Check the easy stuff first, Pull the oil filter and cut it inhalf but if you do not maintain 10 PSI of oil pressure per 1000 RPMs don't run it.

Good luck, Hopfully you have a defective oil filter