I have a pair of Trick Flow twisted Wedge on my 1987 Camaro. TO make a long story short, I have a problem with my oil consumption. I am loosing allot of oil. It not dripping, and I am not getting the traditional blue smoke that come from burning oil.

I do get a faint smoke, visible if you get to the tail pipe. The last time I took my carburator for calibration purposes, I notive that film of oil on the bottom of the carb, as well as the wall of the intake manifold. It wasn't heavy film of oil.. but there was oil. I am deducing that my valve guides as worn out and this is the culprit of my problem.

I have taken my sparkplug out, and I do have the sign of oil leak. I just don't know if it is from the piston or the heads.. I have check my compression and if fine.. but that doesn't mean that my oil rings are not mess up...

Any comments?


P.S: What about HTC coating for my old headers?:lala:

 

have you tried using a thicker oil (20W50) now that summer is here?

 

You're probably sucking oil in through the intake manifold.

 

Fulo,

It's possible that the oil rings are worn. You may also have a valve guide/seal problem, or an alignment problem with the intake and heads.

If you can recall, how well did the ports in the heads match to the intake gaskets? The intake? If there was too little mating surface area between the intake and heads, you may be losing a little vacuum and oil through those areas.

Have an assistant follow you in another vehicle. Have them note the exhaust color (if any) while accelerating hard, normal acceleration, part throttle cruise, decceleration, and a hard decceleration (downshifting). If there is oil smoke apparent on hard decceleration, you may have a vacuum leak or worn valve guides. If the oil is more prevalent at acceleration or cruise, it may be the rings. Oil smoke a part throttle cruise only could indicate a PCV problem.

Valve guides and stems can be checked by removing springs and measuring side play. Checking rings is a lot more intense. Checking the intake seal would require the removal of the intake itself. Obviously, the PCV can be inspected easily.

As for the headers, before any successful coating all the rust would have to be removed, which could be a lot of work.

 

How many miles have you had those trick flow heads on there? If i remember correctly, trick flow heads (at least some of them) have had problems with their valve guides, which would explain the oil consumption. I'd perform a compression and/or leakdown test of the engine to determine if the problem is the bottom end (ie rings), the heads (seals, guides), or an intake gasket leak as mentioned above.

 

Just a heads up. I have the twisted wedge heads too and when I took them apart to clean them with about 8000miles. intake valve guide were worn and cracked. You can see where the heads where drilled off center for the guides. Check the placement of your guides if you dissamble the heads.

 

Fulo,

It's been a long time since i have had valve guide problems...6 years. Anyway, a frind told me to do a compression check on all cylinders. then squirt 10cc's of motor oil in a cylinder. Then check the compression. If the compression raises over 10-20 points, the problem could be the rings. If no change, suspect valve guides. It;s been a long time since i've done this ......but it can give you some clues where to go from here. good luck and keep us posted!

 

See post "Oil on Spark Plugs" last dated 9/10. I sent a personal message to Mykos1980 and he also had Trick Flows. I am also looking in to this problem on my own new motor with screw in rocker studs on SR Torquers. My fix (temporary) was to plug the breather on the pass side valvecover and let the PCV valve pull a good vacuum on the crankcase. If this is my problem then the oil seepage through the rocker studs would stop when the pressure is equalized above and below the stud (equal vacuum that is).