I have a 103 cu in engine that has only 7500 miles on it. The problem I had was the oil pressure gauge would build to 30 lbs when you start it on a cold start, after it would warm up it would drop into normal operating lbs around 10 lbs, but when I would start out on a ride instead of the pressure going up as you ride it would go up some and then start to drop at high RPMS and then it would climb up and then lose pressure again while riding at say 60 miles per hour. I changed the gauge and the sending unit and had no change. My question could it be the pump or a blockage? It also has a oil cooler

 

Any recent work in the cam chest?

 

Is this a factory built 103?

 

No, this motor is factory out of crate. No work has been done on the cam

 

Yes this is a factory motor. The other motor that was in it blow up and Harley gave me another factory built motor. Now I'm having pressure problems

 

No warranty?

 

"it would go up some and then start to drop at high RPMS and then it would climb up and then lose pressure again while riding at say 60 miles per hour."

Can you give some numbers-?

What weight/grade of oil do you have in there?

Mike

 

I use 20/50 standard Harley Oil, no warranty. Change oil every 2500 miles.

 

I don't understand. A new factory motor with no warranty?

 

That's right no warranty. The other motor blew up before my old warranty stopped and I still had 1 month of warranty on the new motor. Harley Davidson would not give me an extended warranty on the motor, not even one year. This drive train has been the drive train from hell. One blown motor at 37,000 miles, four inner primary seals, two compensator sprockets and the list go on and on. The motor has 7500 miles on it right now and I have a oil pressure problem. Harley refuses to stand behind there trash.