Spitting oil through tailpipes.

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Ironmike

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Yep. I'm not burning oil, my plugs look like new. No smoke. O2 sensor dry and clean.

I noticed a couple weeks ago, a sort of mist on my back bumper and T pipe extensions. Inside the extensions was wet oil. Tonite I noticed the right side actually put a drop on th floor right at the clamp.
Stick a paper towel in my extensions and it comes out black and oily.

So this is the engine I built over winter that made 580 HP . Eddy heads had aluminum tubes pressed and tigged in the 2 boltholes that normally supply oil to the head. Oil holes on top of the deck of the block itself are blocked with setscrews. I am now a pushrod oiled top end.

It runs fantastic and probably has around 1400 miles on it this season, and only a couple passes. Like I said autolite 3924 plugs look great and AFR's are pretty close.

I decided to bolt on my topless valve cover as a test and I can tell you that my valve seals are submerged under oil during operation. If I had no covers oil would pour over the sides of the heads like Niagra Falls. Not draining the sump, though...

Thank God I pulled my header evacs and have been running just breathers for 2 weeks.

I noticed tonite I'm down a quart. Is oil somehow going down my exhaust seals without being burned? Do i need oil restricted pushrods?

I just can't figure it out this time. I need some help!

As usual any and all suggestions are GREATLY appreciated.
 
Be curious if you have checked it after driving it a while and letting the motor get good and warm, or just after startup you are checking it
 
Solid roller. And checked it tonite after a 5 minute ride with 1 pretty good "romp" in there.
I tell ya this got me really really stumped.

I'm NOT a track guy so I don't like to even mention numbers but I will tell you the car weighs 3240 me in it and it ran 126.3 MPH at it's best. It's a street car, full interior. This has absolutely nothing to do with my issue.

I hope it's too much oil up top, but if so, why am I not pulling oil into the intake and actually......burning oil?
 
Solid roller. And checked it tonite after a 5 minute ride with 1 pretty good "romp" in there.
I tell ya this got me really really stumped.

I'm NOT a track guy so I don't like to even mention numbers but I will tell you the car weighs 3240 me in it and it ran 126.3 MPH at it's best. It's a street car, full interior. This has absolutely nothing to do with my issue.

I hope it's too much oil up top, but if so, why am I not pulling oil into the intake and actually......burning oil?

Thanks, just curious how it ran. Impressive!. Followed the build.
The reason i asked if you checked the exaust after it being hot is i wondered if maybe you were getting some forged piston “ rock” cold and after the temps come up the piston “ swells” and the issue goes away.
As you checked it hot, the seals would seem to be the likely culprit
 
Being "mechanical cam" , and push rod oil feed, what form of oil restriction/ control is in place? Using the SBC procedure as a comparison with the 2 thread in gallery restrictors.
 
Solid roller. And checked it tonite after a 5 minute ride with 1 pretty good "romp" in there.
I tell ya this got me really really stumped.

I'm NOT a track guy so I don't like to even mention numbers but I will tell you the car weighs 3240 me in it and it ran 126.3 MPH at it's best. It's a street car, full interior. This has absolutely nothing to do with my issue.

I hope it's too much oil up top, but if so, why am I not pulling oil into the intake and actually......burning oil?



Damn that thing is impressive. The dyno numbers are very close. Turned out nice. I'm glad for you. That was a helluva mess for a while.
 
Being "mechanical cam" , and push rod oil feed, what form of oil restriction/ control is in place? Using the SBC procedure as a comparison with the 2 thread in gallery restrictors.


I'm not sure Ironmike is running pushrod oiling. IIRC I *THINK* he is using Hughes rockers that are shaft oiled.

If it's in the pipes but not on the plugs it's probably exhaust seals. Can you post a picture of a spark plug? I'd like to see your tune up.


Also, you should have someone follow you and not if it smokes on decel or while at a long idle.
 
I'm not sure Ironmike is running pushrod oiling. IIRC I *THINK* he is using Hughes rockers that are shaft oiled.

If it's in the pipes but not on the plugs it's probably exhaust seals. Can you post a picture of a spark plug? I'd like to see your tune up.


Also, you should have someone follow you and not if it smokes on decel or while at a long idle.
Good to see you chime in, YR! Actually I AM running Hughes rockers, but our buddy Mike over at B3 Racing converted them along with T&D adjusters , to be a true pushrod oil top end. The original tubes my guy pressed in the boltholes were brass and leaked. Had to switch them to Aluminum and tig them in solid.

So now I'm running bal/ball rods with the standard .080 hole. I damn near ordered the. 029 restricted hole type but the dude at Smith Bros. advised against .

I'll shoot out to my shop in a minute and get a plug pic for ya. I sure hope it's only something to do with seals or flooding the head.
 
I'm not sure Ironmike is running pushrod oiling. IIRC I *THINK* he is using Hughes rockers that are shaft oiled.

If it's in the pipes but not on the plugs it's probably exhaust seals. Can you post a picture of a spark plug? I'd like to see your tune up.


Also, you should have someone follow you and not if it smokes on decel or while at a long idle.
Here ya go, Tim. Gauge shows a little rich at a 45mph cruise, but 13.7 at WOT.
20180824_232120.jpg
 
I was being optimistic lol

I hope you can get it sorted out. I mean the exhaust valve seals is really the only logical posibility right?
 
How far have you ran the car at one time since the new motor, has it sat quite a bit.
More i think about it, it runs so good it almost seems unlikely whoever did the heads missed something.
Almost wonder if it really is sooty/ condensation/carbon and its kinda foolin ya. You havent said anything about seeing smoke out the exhaust, would almost have to if rings or seals
 
Unless its the exhaust valve seals, could be that the exhaust gas is carrying the leaking oil through the pipes? Once the exhaust gas exits into the exhaust port is it carrying the oil with it through the pipes? But you would think with the temp of the exhaust that the oil would burn.

Im curious what is your exhaust setup? What brand of mufflers are you running? Also are you running cats?
 
How far have you ran the car at one time since the new motor, has it sat quite a bit.
More i think about it, it runs so good it almost seems unlikely whoever did the heads missed something.
Almost wonder if it really is sooty/ condensation/carbon and its kinda foolin ya. You havent said anything about seeing smoke out the exhaust, would almost have to if rings or seals
It's friggin amazing ain't it? Stuff like this ONLY happens to me. I've driven it quite a bit this year. We took a 2 hour ride last weekend. It is definitely oil.
I think at times of high manifold vacuum, oil is running down those seals out the exhaust port. Not hot enough to burn it all or cause smoke but enough to get through the pipes. I don't think they dont do well submerged........I think.
 
Unless its the exhaust valve seals, could be that the exhaust gas is carrying the leaking oil through the pipes? Once the exhaust gas exits into the exhaust port is it carrying the oil with it through the pipes? But you would think with the temp of the exhaust that the oil would burn.

Im curious what is your exhaust setup? What brand of mufflers are you running? Also are you running cats?
TTI headers and 3 inch ehaust with Dynomax Ultraflow 2 chamber muffs. No cats. I hate cats.
 
TTI headers and 3 inch ehaust with Dynomax Ultraflow 2 chamber muffs. No cats. I hate cats.

Ok was just curious as if it could be coming from the mufflers.

Have you pulled the flange loose at the header connection to see if there is oil there
 
Ok was just curious as if it could be coming from the mufflers.

Have you pulled the flange loose at the header connection to see if there is oil there
This is exactly what Mike at B3 Racing thought. But it's been a week now with several very thorough blasts.
 
Id almost want to take the pipes loose and see if its in the headers, i looked and all they supposedly put in there is fiberglass matting but who knows, possible they but some adhesive in there to hold it in place? And its melting and coming out the exhaust?
 
maybe (carefully) pull the intake manifold and see if the intake ports are wet with oil. Maybe the intake is not sealing on the bottom of the intake ports and drawing oil vapor into the ports, and burning some, but not all, of the oil.
 
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