Quote:
Originally Posted by cadillac512
Generally no...but it sure won't hurt to inspect the spring and valve while you have the intake off. If the seating areas look good and the spring is in one piece and has decent tension it won't improve pressure to shim it in your case. However, it won't hurt anything either.
The 5 lbs at warm idle and 10 lbs at speed is a bit odd. Usually an engine with 10 lbs at speed will idle at zero. The gauge may be suspect if the relief valve and spring are ok.
Terry
|
You know your stuff! It had "0" at idle before the teardown, I was being optomistic. I took a look at the oil relief valve and spring today prior to putting the intake back on and it was in good physical condition in appearance. I did put a 1/4" shim at the top of the spring insert since I was there and figured it couldn't hurt anything. I completed the intake installation and went for a drive for about 25 minutes and included traffic, stops, steady 45mph speeds and long idles. I noticed an improvement in the oil pressure at all areas, up about 10lbs at speed and 5 at idle when hot. It was 87* and I'm impressed right now with the difference. I'll be driving to a show tomorrow, 30 miles one way and will get a better look at the long term affect. I also think that after blocking the heat rise from recycling into the carb that it is running cooler and the engine is running smoother/better. I do have mechanical guages, one temp for each head (L&R), and one for the oil. I'm anxious to drive more tomorrow and get more data and I'll share that info back here. Thanks again for your input, much appreciated.