Nothing to see here, just project Sisyphus, move along
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From: Very NorCal
Exhaust ports. Sorry, this was done with a flashlight and cell phone 
I tried to get a couple of angles on each of the ports. The second pic for #3 wasn't worth a damn so you only get one.
1A
1B
2A
2B
3A
4A
4B
Oil AAAAALLLLLLLLLL down the side of my block, oil pan, subframe...
I just cleaned and/or painted all that crap.
I tried to get a couple of angles on each of the ports. The second pic for #3 wasn't worth a damn so you only get one.
1A
1B
2A
2B
3A
4A
4B
Oil AAAAALLLLLLLLLL down the side of my block, oil pan, subframe...
I just cleaned and/or painted all that crap.
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From: Very NorCal
It's obviously the valve stem seals.
Tops of the ports are wet, bottoms are mostly dry and there is a very distinct set of streaks where the oil flows down the port and down the runner. Interestingly enough there is no or very little oil on the valves themselves.
There is no point in pulling the head and trying to send it back to have the stem seals replaced. I'll be down for weeks, plus head gasket, plus that drama. There is also no point in taking it to a shop to have $12.49 worth of seals replaced for some obscene sum of money worth of labor charges. Pretty much the only option that's worth a damn is doing it myself.
Tops of the ports are wet, bottoms are mostly dry and there is a very distinct set of streaks where the oil flows down the port and down the runner. Interestingly enough there is no or very little oil on the valves themselves.
There is no point in pulling the head and trying to send it back to have the stem seals replaced. I'll be down for weeks, plus head gasket, plus that drama. There is also no point in taking it to a shop to have $12.49 worth of seals replaced for some obscene sum of money worth of labor charges. Pretty much the only option that's worth a damn is doing it myself.
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Thread Starter
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https://www.miataturbo.net/general-m...ls-head-82278/
My big question is WHY is this leaking? These are valve stem seals, they are pretty hard to **** up. This makes me think something else is going on here.
My big question is WHY is this leaking? These are valve stem seals, they are pretty hard to **** up. This makes me think something else is going on here.
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Thread Starter
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From: Very NorCal
I'll probably just order one, they are $60-80 on Amazon. The question is can I compress the Supertech übersprings with any of those compressors with the head on.
Yes, that's where its from.
Yes, that's where its from.
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From: Beaverton, USA
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It's obviously the valve stem seals.
Tops of the ports are wet, bottoms are mostly dry and there is a very distinct set of streaks where the oil flows down the port and down the runner. Interestingly enough there is no or very little oil on the valves themselves.
There is no point in pulling the head and trying to send it back to have the stem seals replaced. I'll be down for weeks, plus head gasket, plus that drama. There is also no point in taking it to a shop to have $12.49 worth of seals replaced for some obscene sum of money worth of labor charges. Pretty much the only option that's worth a damn is doing it myself.
Tops of the ports are wet, bottoms are mostly dry and there is a very distinct set of streaks where the oil flows down the port and down the runner. Interestingly enough there is no or very little oil on the valves themselves.
There is no point in pulling the head and trying to send it back to have the stem seals replaced. I'll be down for weeks, plus head gasket, plus that drama. There is also no point in taking it to a shop to have $12.49 worth of seals replaced for some obscene sum of money worth of labor charges. Pretty much the only option that's worth a damn is doing it myself.
Whatever brand valve stems seals were used, I'd probably make sure those are NOT the brand that goes back in it. I'm curious which ones you used, so I can make sure I never use those.
And you called me a troll when I said I would question whoever assembled that head.
If I were you I'd yank the head and check EVERYTHING before something more catastropic than a bad valve stem seal happens. At least then you'll have peace of mind knowing it's all right. As an example, if all 8 exhaust valve stem seals are leaking, I think this would warrant pulling the intake manifold and having a peak on that side too.
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