Bad tune=bad valve, need valve job...

[Yellow_rag]

Got a bad (Bama) tune, ran lean, and now the mechanic tells me an exhaust valve is fried. Did a compression test and leakdown, got blowby. Anyway, looking for input on how many hours or cost estimate for doing a valve job on both heads.

Btw, in case you're wondering why I drove it lean, I had immediate codes with the new tune including banks lean, but the exhaust reaked of fule, so assumed it was something else. thanks!

 

[slowmoving1]

you might have a hole in a piston as well.
G/L

 

[MaximumVelocity]

So the leakdown test showed air coming out the throttle body or exhaust? I would also borescope the motor to check the pistons as suggested. That way you don't get any bad news when you pull the heads.

 

[Yellow_rag]

Mechanic said leakdown showed bad exhaust valve. If there was a hole in piston I'd expect air out PCV too, right? Or you just talking crushed top ring land or something? Anyway, will ask mech if he has a scope.

Anybody got any idea how many hours this job would be without machine work? Just want to make sure I'm getting a decent deal. Or may just try it myself. thanks for input.

 

[Johnny03]

Here is a thread from awhile back. 3rd post down. Good luck!

http://www.svtperformance.com/forums/tech-231/334485-smoke-startup-2.html

 

[03&68cobras]

That quote was only to pull the valve covers and replace the seals. I just got a quote to R&R the left head for $1300 labor only. I had intended to purchase a FRP head for $1100 and have the shop install it.