Aidan's loose oily bunghole actually runs a track lap
SADFab Destructive Testing Engineer
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I posted a picture a ways back. It's barely wet. And just on one cylinder.
im quite sure it was honed right. The other 3 motors that were sent in with mine aren't smoking.
im quite sure it was honed right. The other 3 motors that were sent in with mine aren't smoking.
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I'm not discounting your suggestion. Just countering it with the reasons I've been using to rule it out.
There is one last hope.
https://www.miataturbo.net/general-m...tion-gas-8955/
I'm running really rich at higher rpms. Haven't had time to really tune it in. And rich = safer than lean.
Not sure what I'll do if it keeps smoking. Probably valve stem seals again or something. Just keep replacing them until i run out of money.
There is one last hope.
https://www.miataturbo.net/general-m...tion-gas-8955/
I'm running really rich at higher rpms. Haven't had time to really tune it in. And rich = safer than lean.
Not sure what I'll do if it keeps smoking. Probably valve stem seals again or something. Just keep replacing them until i run out of money.
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New ground shim back in. Clearance is right where I wanted it to be. Machine shop killed it. They even showed me how the surface grinder worked.
Hopefully will have it driving tomorrow. I think I'll have some dry time to spin some tires.
Hopefully will have it driving tomorrow. I think I'll have some dry time to spin some tires.
Gotta ask, do you screw with RTV on the half-circle spots when you put the valve cover gasket on? It takes me forever to extract it all to re-seal the thing if I have to check the valve clearances..
Wow you've come a long way. Sorry if you mentioned this- Just skimmed to catch up. (Don't holler and throw **** for stupid question, but) Are the rings directional and could one on number 4 be upside down?
How dirty is the inside of the intake manifold? If it's not the turbo or valve stem seals then. just flinging ideas to help ya' think:
-rings on 4 didn't seat as well as the others
-there's enough residue left in the intake manifold to make it to 4 and smoke
-something keeps messing up a valve seal
-you've got a weird, almost unheard of crack in the head
-rings on 4 didn't seat as well as the others
-there's enough residue left in the intake manifold to make it to 4 and smoke
-something keeps messing up a valve seal
-you've got a weird, almost unheard of crack in the head
Not for the oil rings at least. If they fail, it coats the comp rings in oil all the time and you show good compression, like driving around doing a wet compression test all the time. The motor I built years back where I literally reused the old rings, it had 140 or so compression, but burned a quart every 200 miles or something crazy like that.