Oil be darn
- Thread starter 69conv
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I will never be your caliber builder but i thought I would check that. I pulled the pvc and ran a tissue up it from both ends and there wasn't any noticable amount of oil there, so just to make sure I ran the camera down the carb and didn't see oil in the runners.
Just to be sure I may disconnect the pcv and plug the inlet to the carb and see what happens. Kinda the problem is there is so much iol in the exhaust it will take a while even after the problem is solved so the best bet is keep checking the chambers.
jbc426
Well-Known Member
Nice car! Good luck!
Thanks, she's 90% there just need to solve this problem.
The back story on my car. Dads Barracuda
I've gotten ring sets with the wrong size oil rings/expanders, one set was std & the oils were.030" over.....luckily I'd done enough at that point that I knew as soon as I installed the 1st set of oils something wasn't lookin' right. So before I installed the 2nd ring I tried compressing them, uhmmm..nope, and set it on the bore just to see...WHAAAwhaaaooow.......
Another std. set had the correct oils & the expanders were for who knows, I was in a bind for time, in went the OE expanders.........ran like a pup, zero oil consumption issues, still in there 27yrs. later.
It's possible Yours were packed with a std.-bore oil set, which to be fair to the builder, would be harder to detect than the other way around.
So remove the distributor and boroscope the intake valley.
What would I look for?
I couldn't get the boroscope far enough down the carb to see the intake/head juncture.
Look under the intake ports to see if you see oil.
CudaJason
Well-Known Member
you need to pull the intake, you will be able to see pretty quick which, if not all the ports are sucking oil from the lifter valley. Then you can check the angle of the intake in comparison the the heads. If you pull the intake, then clean the gasket surfaces on the heads and intake, set it pack on with no gaskets. you can usually see pretty quick if the angle is off, it has got to be completely flat against the head or it will not compress the gasket properly and suck air from the lifter valley, with a ton of oil as well.
Thanks CudaJason, thats the conclusion I have arrived at. I took a measurement of the fel pro gasket in place and am planning on tearing down the intake to see whats going on.
DODGE Fel-Pro 1213 S-3 Fel-Pro Performance Intake Manifold Gasket Sets | Summit Racing Presently installed gasket.
See post 3. That is absolutely unacceptable and it’s junk. Find a shop that knows how to hone a cylinder because that’s not it.
Not necessarily. could still use oil.
So are you thinking its the rings and not the intake gaskets?
Highly unlikely thats a gasket issue. Pull the intake first and have a look because it’s cheaper.
I’ve had enough junk come across my dyno in the last couple of years that look just like that. It was always the rings and a 1975 hone job.
I've got some replacement gaskets coming in to see whats going on/
Ran a leakdown test and it looks pretty good.
Did a compression test and they were all within 10%. BTW the engine was cold. Got most of the top pulled apart and ready to take off the intake. Ran outta time.
You may be looking at valve seals and or guides.
I was going to suggest just pulling the carb, since You have the inspection cam, & feeding it down the runners.
Also, just because the ring seal is good compression/leakdown-wise, doesn't mean the oils are OK, or that 1st or 2nd compression rings aren't flipped.
Just some things to keep in mind if the cause turns out to be evasive.
jbc426
Well-Known Member
You can remove the intake & gaskets, lay 8 pieces of 3 inch long, small diameter solder vertically next to the ports and snug the intake back down. The solder will smash down and reveal what the relationship is between the angle on the heads and the angle on the intake. Remove the solder before reassembly.
Worse case, you may have to have the manifold cut to improve and match the angle of the heads, or re-ring the bottom end and have the heads looked over carefully.
Worse case, you may have to have the manifold cut to improve and match the angle of the heads, or re-ring the bottom end and have the heads looked over carefully.
PA Dodger
Well-Known Member
I had an Eddy Air Gap that had the right angles but was still milled wrong. It was bottoming out on the china rails just as it was getting to the head gaskets, almost like when heads were cut. Comparing against three other manifolds showed the Air Gap to be wrong.
While you're there, make sure the dowel pins in the china walls were removed.
Icetech
Well-Known Member
I was having weird issues with my engine (mainly due to my brain) but i ended up filling the intake with smoke and ran a scope into the valley to check for any leaks... a lot easier than tearing down
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