Got a set of valve covers that the passenger side just won't seal, damn China. Going through put my og ones back on, put new intake carb and pcv valve on. Should I drill out spot for pcv valve? Don't have oil filler tube anymore either. Should I do a breather on the covers?
What the the original valve covers that you have? pictures? Generally adding a hole for a PCV valve doesn't work out to well, unless you add a good oil separator under it. Like maybe get one from a later model stock valve cover, and tack weld it in. And make sure you put the hole between two cylinders, so there's enough room between the rockers for it. I'd probably find some covers off a newer engine, if I had to run PCV on the valve covers.
Hmm...I think I would try to find an intake with an oil filler tube that you could put a breather on and then run your PCV for the crankcase vent at the back of the block to the carb base. A PCV in the valve covers makes it look too much like a 350, IMHO. Just a thought.
I'm not sure how it ended up in here. They are stock 327 gm covers that came with the car, I'm going to check the leaking one I put on and see if it is a little warped, maybe a tweak here or there will help? Can a mod move this to the proper place?
Are they leaking because there aren't any breathers? On your Chinese specials you might try cork gaskets and glue them to the cover with 3M weather stripping adhesive just don't cuss me when it's time to get them off.
There are breathers on them. Just passenger side leaks, going to mess with it and see if I can bend it in, it leaks in the middle bottom. Got lucky with driver side. Got cork gasket 5/16 glued with black rtv weighted down overnight.
What do the corvair valve cover clips look like? I bought spreaders for the bolts, I need to check it on a flat surface. It may be twisted a bit. Trying to salvage them, don't want to swap them back to the originals. The chrome looks nice
so why talk about drilling covers since there are already breathers? if stock they should already have baffles in them. use correct size grommet for PCV.
Even if you do drill a hole for a PCV, or use a different set of covers that already have them, you still need to have a vent to pull air in through. That usually means a front fill tube breather, another breather in the opposite valve cover, or some variation of those two things. Most aftermarket intakes have a bung that can be machined for an oil fill tube. Most 327's have a spot on the rear on the block for a PVC pickup point or vent. You could also add a couple of "race type" vents to both valve covers, use the rear of the block for the PCV pickup, and you would't have the worry of sucking oil off the valve covers. But, you would also need the factory valley cannister baffle to use with a PCV. There are many threads here to look through. I am Butch/56sedandelivery.