I went to start my truck Toy yesterday, which has a transplanted sbc 350. I had to jump it and once it was going I got out to pull the cables and saw a 2 foot geyser of oil shooting out of the top of the oil filter so I ran and shut the engine off.

Anyway, once the engine was off I took a look and it looked like the oil was coming out of the top of the oil filter where you screw it on and the oil pan drain hole (which I know was tight). I pretty much dumped 5 1/2 quarts of oil out in my parking lot in 1 minute. Any idea what's going on here? Is the oil pressure high enough to force its way past the oil pan bolt and oil filter or is something plugged up?

Here's what I've done recently:
1) replaced the front and rear main seal.
2) new oil filter.
3) put new custom clutch slave cylinder on which pushes against the oil filter slightly when the clutch is pushed in.

This truck is driving me crazy, I've already done a bunch of work on it and was going to be able to finally drive it and now this crap happens. Any help would be appreciated.

Thanks

In all my years I have never heard of this:confused: Are you sure you didn't x-thread the filter when you put it on? Try a new filter sounds like that 1 is shot (rare case if new). Are you sure when you put the rear main seal in that the "corner" seated just right? Do you have a 1 or 2 piece rear main seal? Was this engine running ok before you worked on it? Let me know what you got....:eek: :(

Sounds to me like you failed to make sure the gasket came off with the old filter before you installed the new filter pull your filter and i bet their are two gaskets there. they will never seal that way..

Originally posted by hy_desert_4wheeler
Sounds to me like you failed to make sure the gasket came off with the old filter before you installed the new filter pull your filter and i bet their are two gaskets there. they will never seal that way..

my money's with hy_desert's word. I've seen/done that myself,
and it only takes about 20 seconds to drain the pan.

But you give reference to some of your own failed-attempts at
your sbc engine swap.

"the clutch slave cylinder pushed slightly against the filter when
the clutch is pushed in".......... and WHY does it do this? better
fix that shit..........:rasta:

you might have cross-threaded it due to your conflict with the
clutch linkage prob.

--Good luck,

--Sherpa

i'm with hy-desert

Originally posted by Shaker
In all my years I have never heard of this:confused: Are you sure you didn't x-thread the filter when you put it on? Try a new filter sounds like that 1 is shot (rare case if new). Are you sure when you put the rear main seal in that the "corner" seated just right? Do you have a 1 or 2 piece rear main seal? Was this engine running ok before you worked on it? Let me know what you got....:eek: :(


Originally posted by hy_desert_4wheeler Sounds to me like you failed to make sure the gasket came off with the old filter before you installed the new filter pull your filter and i bet their are two gaskets there. they will never seal that way..


I ran it about a week ago for about 10 minutes with no problems after I had done all that work. I was thinking it was the oil filter too. But oil was squirting out of the oil drain plug too. Almost like something was blocked and built pressure up really high.

I know I need to clock the clutch slave cylinder better, but I ran it before without a problem so I can't figure out why that would be a problem now. I'll go out and get another filter to see if that's the problem. Hopefully it's something stupid like that. Has anyone ever had an oil passage blocked and have it build up a bunch of pressure so it blew something out?

Thanks

If it is an old block (really old) then there is a diaphram where the oil filter screws on. It is a common problem that peole will unscrew them and throw them away and not put a new on on b/c they did not realize what they did. I had the same problem with a 327. look and see if it looks as though the inner part of the filter will seal. if it doesn't look as though the seals will line up you will need to get a new diaphram from you local performance shop.

Originally posted by RRaker
If it is an old block (really old) then there is a diaphram where the oil filter screws on. It is a common problem that peole will unscrew them and throw them away and not put a new on on b/c they did not realize what they did. I had the same problem with a 327. look and see if it looks as though the inner part of the filter will seal. if it doesn't look as though the seals will line up you will need to get a new diaphram from you local performance shop.

How old is old? This block was made bewtween '69-72.


Thanks

Originally posted by FattyCBR


How old is old? This block was made bewtween '69-72.


Thanks

You just found your problem

You local performance shop should have what you need it hink it is relativly cheap less than $20.

frustrating isn't it?

i used rtv on mine so i could go wheeling with my friends all weekend long. It still leaked but really slowly :D

Blew the motor 3 months later:nuke:

Check the filter. I'm betting on 2 gaskets as was said. As foor the oil coming out of the plug, are you sure it's not just dripping down the side of the eng and off the plug?

the thing is when you are missing this diaphram then the gasket won't seat. It is the most frustrating thing in the world. It seems like you have two gaskets but you don't the surface that the diaphram sits on is angled and only half teh width of teh oil filter gasket so it seams like it should seat but it won't. the other thing is that your oil won't be filtering because the center gasket won't reach so rather than going through the filter it goes around it.

my block was made in oct of 69 i think

Originally posted by RRaker


You just found your problem

You local performance shop should have what you need it hink it is relativly cheap less than $20.

frustrating isn't it?

i used rtv on mine so i could go wheeling with my friends all weekend long. It still leaked but really slowly :D

Blew the motor 3 months later:nuke:


Originally posted by JeepinIan


As for the oil coming out of the plug, are you sure it's not just
dripping down the side of the eng and off the plug?


If this is the problem that would be good, because it's a simple fix. I just hope the engine isn't fawked up. I'm pretty sure it wasn't oil dripping from the engine because the pan was spotless except for a circle around the drain plug.

Thanks

Originally posted by FattyCBR
... I'm pretty sure it wasn't oil dripping from the engine because the pan was spotless except for a circle around the drain plug.

Thanks

Check the copper washer on the drain plug. It may be bad adn letting the plug drip.