aaronth777
Proven Member
- 92
- 26
- Apr 12, 2015
-
Dayton,
Ohio
Please excuse the long post. This is a bit of a newbie question, but I did a balance shaft delete about 300 miles ago and the engine seems to be making a lot more noise than it should be. Here's the details:
Balance shaft belt broke and threw the timing, had the head rebuilt because of bent valves. Left the front bs in place with no belt, and installed the stub shaft in place of the rear bs. Lubed up the oil pump and reinstalled everything. Used Royal Purple 10w-30 synthetic oil for the first time (used to use penzoil high mileage conventional 10w-30). Engine was naturally loud on first start up but quieted down after a good drive.
When I have my windows down and drive past a wall, it sounds like I have an exhaust leak but I spent hours searching and I'm 95% sure I don't have one. At idle, the engine sounds fairly normal, maybe slightly noisy. But if I rev the engine from the throttle body while right next to the engine, it is noticably loud and rpm dependent. It's not really a whine or rattle, it's hard to describe. I removed all accessory belts and timing cover and nothing changed. Using the hose-to-ear method, it seems like it might be coming from the oil pump/rear bs area. The factory oil pressure guage is reading normally and the car runs fine otherwise, but the noise concerns me. I'm unsure if the noise has been there since the rebuild or if it's gotten worse over time.
What would the symptoms be if the stub shaft is backing out or fell off altogether? Also if I used too much assembly lube in the oil pump could that be causing issues? Maybe I'm being paranoid, but i can't afford another catastrophic engine failure.
Balance shaft belt broke and threw the timing, had the head rebuilt because of bent valves. Left the front bs in place with no belt, and installed the stub shaft in place of the rear bs. Lubed up the oil pump and reinstalled everything. Used Royal Purple 10w-30 synthetic oil for the first time (used to use penzoil high mileage conventional 10w-30). Engine was naturally loud on first start up but quieted down after a good drive.
When I have my windows down and drive past a wall, it sounds like I have an exhaust leak but I spent hours searching and I'm 95% sure I don't have one. At idle, the engine sounds fairly normal, maybe slightly noisy. But if I rev the engine from the throttle body while right next to the engine, it is noticably loud and rpm dependent. It's not really a whine or rattle, it's hard to describe. I removed all accessory belts and timing cover and nothing changed. Using the hose-to-ear method, it seems like it might be coming from the oil pump/rear bs area. The factory oil pressure guage is reading normally and the car runs fine otherwise, but the noise concerns me. I'm unsure if the noise has been there since the rebuild or if it's gotten worse over time.
What would the symptoms be if the stub shaft is backing out or fell off altogether? Also if I used too much assembly lube in the oil pump could that be causing issues? Maybe I'm being paranoid, but i can't afford another catastrophic engine failure.