Rapid said:I am working on an annoying oil leak at the front of the engine. After a 200 mile trip at highway speed, 2800-300 rpm, I find oil on the front of the engine, under the hood and"blown" back along the inner fender. I also find the dipstick just above being seated in the tube and oil there also. I have a breather and a PCV valve on a 65 289 with minor mods.
HistoricMustang said:If it is blowing out the dipstick tube, put a spring on it. This is what I did.
HistoricMustang
www.historicmustang.com
Rapid said:Thanks for all the info guys. The oil is clean and not like the great coffee! I did put a little bend in the dipstick and that helped some and convienced me that it is coming up the tube. I do have a closed breather with a tube coming off and a new PCV. I don't know if it matters but I put the PCV on the drivers side valve cover and the breather on the passenger side. As for rings, I am getting about 135 lbs per cyl on a compression check. Would the lack of an oil slinger make any difference?
bnickel said:try switching the pcv valve to the other side and get one that opens at a higher amount of vacuum. you can actually tune your idle to some degree with different pcv valves. i would buy several different pcv valves and use the one that gives you the smoothest idle and see if that doesn't fix your blow by through the dipstick, actually it's probably not blow by from the rings but the actual crankcase pressure that is popping it out. a windage tray would help with this also. you really need to be pulling as much vacuum through the crankcase as possible, this also helps the rings seal better too.
anyway start out with different pcv valves and make sure your breather hose is connected to the air cleaner in a way that it is actually pulling air from the breather through to the carb, this will also help your problem. as the engine accelerates it will pull more air out of the crankcase through the breather tube. i have also seen people use 2 pcv valves as well as a closed crankcase breather.
Edbert said:Don't mean to sound insulting but often problems come from silly/simple errors and I figured you might double check. Your oil level isn't too high is it?
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