I did it to a buddy in highschool who was being a prick. Had a little 66 mustang coupe with a 6 and said it was quicker than anything i could build. Came out at lunch and poured half a quart of ATF down his carb. Smoked out the entire parking lot.
Checked the intake gaskets everything looks to be in order put it all back together more smoke looks like the yard is on fire! Just did that looks to have good compression. I would have to kick someones ass at this point! I sure hope I find it. The gauge I borrowed only checks compression. No leak down option. Yes the floor of the intake is wet with oil good friend of mine is a master mechanic and has never seen a motor do this before. At this point I wish I would have used the BBC.
Did you lay the intake down in the valley with NO gaskets to check mating surfaces and verify there is little to no deviation? I don't know the spec right off hand but I am thinking 3-5 thou. max.
Curious, do you have power brakes? Is the vacuum line connected to the intake manifold? Why, the power brake booster could be bad and sucking brake fluid in! Had it happen to me years ago. Just a thought.
While the intake is off, prime the oil pump by chucking an old distributor shaft into your drill trick and see where the oil goes.
Checked that the first day but still good place to look. I will try this might run the pump with a drill. Man if I drove it around I would not be able to see backing out my drive.
we used to seat rings doing this 10 times about 30mph tork up to 50 mph and keep repeating, when done you have seated rings and gain a bunch of power i used to use the cheepest black rings and use a ball hone after doing the ridge, just be sure to wrap the crank journals with duct tape!!!
Are you sure its oil and not trans fluid. Modulator valve on tranny may have let go and sucking fluid through the intake. I seen a guy tear a motor completley apart rebuild it and have it be the modulator.
Looking at the compressed imprint on the intake gaskets you should be able to see if the gasket got crushed enough all the way around the ports.Are they the FelPro blue gaskets? After doing a number of rebuilds over the years I got one that smoked right from the git go.I finally pulled the pistons and found a few bent second rings and oil rings.The rings were new so it's likely I got sloppy during assembly.I din't want to admit to myself I fucked up
If the rings are bad, then the oil could be from blow-by. The rings can't hold the pressure in the cylinder so it blows by the rings compressing air in the crankcase. This is sucked up the PCV system. The oil settles in the intake. I have seen this on one of my POS's. If you have a breather cap, the oil can come out there too. I suggest a vacuum check AND a compression check. Once you do a compression test, squirt a fair amount of oil in each cylinder and re-check. If the pressure comes up, the rings are bad/not sealing. If the pressure is the same, the guides are bad. BTW, I have had heads rebuilt also. If you don't ask/pay for guides they won't be replaced. The heads ARE rebuild, but that don't make them right. I had new guides put in a set of heads last year. The clearences looked good at rebuild, but didn't hold as long as I would have liked. So I had to have guides AND valve job again.
If you did not put the heads together check to see if they put the seals on the valve stems. It seems like a lot of smoke for valve stems, but worth a look.
That amount of blow-by should be coming out of the breather and will fog the entire engine compartment in a short time. The oil squirt test is a good one, a leak down test would be the best way to go. Are they YOUR heads that came off the motor? Just a thought. Since valve guides are where all the valve service tools locate from, they are checked and at least knurled by any reputable shop. That is part of the baseline valve job, of course anything else is extra. I'd take a real close look at the valve stem seals. Bob
Thanks for the advice. I found a bad ring. I decided to have the whole thing gone through at the machine shop. I should get it back sometime this week. Sometimes you win, sometimes you loose.
Hmmm.... What did the end gaps look like on the rings when you checked them? I had a 351w that all the cylinders looked fine, no ridge ring at the top to speak of so I honed them, checked the end gaps and put it together....when i fired it up it looked like the fog machine at a 70s disco, blow-by and burping up oil everywhere.Finally figured out one of the cylinders was "egged out" for lack of a better term toward the bottom of the stroke and when I checked the end gap I had just checked up toward the tops of the cylinders. Good luck!
Happened to me also. Fresh stroker motor, same th350 as I used before. hooked everything up and it was fouling plugs. luckily i suspected the carb, and when i pulled the line off i saw red fluid. I also put the rings in upside down once. a new set of rings cured that one.
Thats too bad on this situation, At one point my old shop was delivering a average of 10 engines a week all in BBC form very repetative, mistakes happen even by very experienced builders so I wouldn't beat yourself up. Shit Happens! But on another note for future reference I didnt see anyone post this I have seen a cheap fuel pump allow oil into the fuel system before and not fuel in the crankcase.
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