Do 283,327 engines breath differently than 350's ? A lot of 283,327's had that breather tube at back, and oil tube at front of intake I was a cruise tonight in Goderich and when it was over , I beat it for home...3,4,5 000 rpm When I got home I parked car in driveway . I moved it later, into garage, and noticed a large puddle of oil.. I opened hood, and oil was on underside of hood, and a lot on chrome timing chain cover area... I wiped it down, and off, as best I could.. I pulled out oil rubber plug and PVC valve and the other side had a closed grommet I had not the proper gromet and pipe to air cleaner(yet) so I stuck a closed grommet in hole... I have picture of covers I got with car.... They have a PCV valve and brather on other side...
These are the Z28 covers I had PCV valve on left and oil plug for oil adding and on the right is only one hole and I had a closed grommet on it The grommet was not a tight fit, so i am guessing it night have blown out? The car ran fine with all hole open and didn't leank at timing cover I first though it had blown out at the front of oil pan ?????
I just noticed that the chrome timing cover is not in first photo hmm I know why! the car had a 350 hp cam added laSt year.. and HEI and MSD wires
-- Edited by 427carl on Wednesday 12th of August 2009 09:49:19 PM
I think you need a twist and turn cap, not that push in grommet. Look at mine, otherwise our valve covers have the same set up, PCV and oil fill on driver's side , breather on passenger side.
do you have a photo of other side showing your breather? My valve covers don't have the 2 notches for the oil fill style you have.. Mine are set up for push in.. It seems that using the closed grommet was a no no but how can it push out so much oil??
This is the only one I can find of the passenger side, it has a breather similar to your first photo. My Valve covers are from an IROC-Z. Have you checked the valve cover bolts for tightness? I think your valve covers are from an 80's era Corvette.
Carl is right though you need a breather. You can us the one from the first photo in that hole I would think. That grommet just doesn't seal tight enough to stop the blow oil.
-- Edited by 73SC on Wednesday 12th of August 2009 10:08:33 PM
Yes, you need a breather in the cover opposite of the pcv valve for it to work properly I think.
I was going to run a tube to the lT1 style air cleaner.. I think from reading other on line info, I was stupid to use a closed grommet Its a wonder it didnt blow out, as it was not a tight fit Maybe it was sucked tight? I will clean it off and check it next week We are going RVing tomorrow
I have this HOSE from/to air cleaner just dont have the connector and grommet yet.. It will draw air (breath) from AIR CLEANER?
-- Edited by 427carl on Wednesday 12th of August 2009 10:24:01 PM
just put a breather cap on it-don't chance sucking oil from the crankcase only to put it in the carb. Get that engine breathn' so you don't suck the rings out of it.