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Author Topic: Matt's S12  (Read 212348 times)

Offline seishuku

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Re: Matt's S12
« Reply #1260 on: 09:35:03 PM / 10-Apr-14 »
Well cold idle oil pressure is 80PSI, so down to 30PSI is fairly warmed up. My water temp is up to 180f by the time oil pressure is down to 50PSI.
Anyway, today it all seems worse, and it's blowing smoke out the valve breather when cold, so it's not only water vapor, but also exhaust gas. :grumpy:
Cylinder leakdown didn't seem enough to cause THAT much combustion leak, but it's also not drawing in oil either, so I don't know what's doing on there.

On a lighter note, I got the new brake hoses installed in the rear now, they fit perfectly and as I suspected I had to reuse the copper crush washer.
« Last Edit: 05:26:19 PM / 19-Oct-19 by seishuku »
Matt W.
Daily: 2015 Ecoboost Mustang
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Offline Big Brother

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Re: Matt's S12
« Reply #1261 on: 03:23:53 PM / 11-Apr-14 »
Which means it's head gasket time again, or the head is cracked...

You can't catch a break, can you?

Go air cooled, no head gaskets! lol

Offline seishuku

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Re: Matt's S12
« Reply #1262 on: 04:05:20 PM / 11-Apr-14 »
I guess not.

It's not the head gasket though, the other cylinders are a solid seal, no oil leaking, no coolant leaking. It's just rings on #1.
I wonder if something got in there and gouged up the bore wall and that's where it's blowing by, but I would think that would have made noise.

I thought about a VW motor in there, not exactly a quick fix for my current problem though... I guess I'll just have to deal with it for now, and maybe keep an eye out for a decent/cheap S14 SR20 long block or something.
« Last Edit: 04:05:37 PM / 11-Apr-14 by seishuku »
Matt W.
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Offline Big Brother

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Re: Matt's S12
« Reply #1263 on: 01:49:37 PM / 12-Apr-14 »
Blowby, eh? Sure you don't have a cracked ring/bad lands? I think Harbor Freight sells a cheap borescope with a light, maybe have a look-see down #1 plug hole to confirm?

Offline seishuku

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Re: Matt's S12
« Reply #1264 on: 03:25:39 PM / 12-Apr-14 »
It's possible I guess, but there's usually bad noises associated with that... it doesn't sound any different than usual.
I'll have to see if I can get a scope and take a look...
Matt W.
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Offline seishuku

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Re: Matt's S12
« Reply #1265 on: 06:09:30 PM / 14-Apr-14 »
Interesting... it doesn't seem as bad today coming home from work.
Its still blowing exhaust out the valve cover vent, but not nearly as much.

I wonder if it might be a stuck ring, or maybe some how the rings rotated to the point where the gaps are nearly on top of each other (not likely).

Whatever, I don't really care anymore... just gonna toss a catch tank on it and keep going. :lol:
Matt W.
Daily: 2015 Ecoboost Mustang
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Offline Big Brother

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Re: Matt's S12
« Reply #1266 on: 12:30:19 PM / 15-Apr-14 »
lol, as long as it don't leave you stranded at some point what's the harm I guess.

Update on the Dodge: went through 2 recon heads with a place based in Texas, but they both had issues I wasn't comfortable with. First one had a small crack in one of the water passages, this recent one had some welding done to the intake ports (probably to fix cracks) and they didn't do the machine work correctly. There was a gap under both the new intake seats, so I don't think they went into the casting all the way. That and a generally unfinished look to the welding repair itself, like not using a die grinder at all to clean it up and blend back the port wall, was enough to turn me away. They claim that when they machined the counterbore for the new oversize seats it leaves a small step from the old counterbore, but I was able to insert a thin piece of metal across the entire width of the seat so I don't trust it. Not like they are going to pay the mechanic for his work when it drops a seat...

Long story short I found an old post from last year on a forum where a guy was selling an NOS cylinder head for only $260 shipped, he still had it so it's on it's way from Oregon now. That plus a new T3 to replace the tiny TE04H Dodge decided to foist upon this great engine, and I should be ready to rock soon. Now I just need an intercooler...

Offline seishuku

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Re: Matt's S12
« Reply #1267 on: 03:44:17 PM / 15-Apr-14 »
Damn, 2 bad heads? Sounds like a shop to avoid in the future. :lol:
$260 for a brand new head sounds like a hell of a deal though.
Matt W.
Daily: 2015 Ecoboost Mustang
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Offline seishuku

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Re: Matt's S12
« Reply #1268 on: 08:38:40 PM / 23-Apr-14 »
MegaSquirt display part 2!
http://youtu.be/qqdF7Ks2VH4

That's on my MSP430 LaunchPad (kinda like an Arduino), but shouldn't take much effort to port that code to the MegaSquirt like I did with the first display.
« Last Edit: 05:27:07 PM / 19-Oct-19 by seishuku »
Matt W.
Daily: 2015 Ecoboost Mustang
Previous Daily: 2011 Camaro V6 (tree fell on it)
Previous previous: 2013 VW Jetta TDI super polluter (got bought back)

Offline Basic

Re: Matt's S12
« Reply #1269 on: 11:07:27 PM / 23-Apr-14 »
Cool stuff. I'm currently working on a arduino consult display/data logger. If I had a megasquirt I'd like something like this as well.
Hey, truck engine + truck turbo - why not?

Offline seishuku

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Re: Matt's S12
« Reply #1270 on: 06:01:58 PM / 24-Apr-14 »
That's how this started, it was going to be a digital interface display for my Innovate wideband (no analog signal loss), but displaying MegaSquirt data is just as good.
Here it is running on the MegaSquirt:
http://youtu.be/pJhWr3sL1ks

These displays are ridiculously easy to use, they use one 74hc595 (shift register) per display and passes overflow data on to the next chip, so all you need to do is send out one byte per digit... In this case, 16 bytes.
I was a little worried about overtaxing the MS processor, I know these microcontrollers can be lacking in available clock cycles, but it seems to be taking it ok (even with bit-banging the SPI data).
« Last Edit: 05:27:19 PM / 19-Oct-19 by seishuku »
Matt W.
Daily: 2015 Ecoboost Mustang
Previous Daily: 2011 Camaro V6 (tree fell on it)
Previous previous: 2013 VW Jetta TDI super polluter (got bought back)

Offline seishuku

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Re: Matt's S12
« Reply #1271 on: 06:36:29 PM / 25-Apr-14 »
Made a panel for the displays

http://youtu.be/AhzRVIopdWg

Just need a flux capacitor... :shifty:
« Last Edit: 05:27:57 PM / 19-Oct-19 by seishuku »
Matt W.
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Offline EternalSwap

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Re: Matt's S12
« Reply #1272 on: 07:46:17 PM / 25-Apr-14 »
That looks SO awesome lol I love it
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Offline seishuku

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Re: Matt's S12
« Reply #1273 on: 09:26:24 PM / 06-May-14 »
Well... The engine is done, or is it that I'm done with it? Either way.

It's been having a little blow-by issues on #1, manageable, it wasn't burning oil... Then one day while cruising, big cloud of black smoke, super rich... Now it smokes and burns oil.
I thought an injector was messed up and #1 was getting worse, but apparently not...

This was nearly 3 weeks ago.

Apparently, that cloud wasn't an injector, nor was it #1... It was #3.
Must have popped a ring-land, or broke a ring... Because tonight I finally got around to pulling spark plugs, #1 was a touch lean, #2 looked good, #4 looked good, #3 completely soaked in oil, though seems not enough to completely foul out the plug because it was still able to light off somehow (thus the burning oil and rich AFR).

Not that it matters if it's #1 or #3 that's jacked up, it's done, I've parked it and now have a nice cheap 2002 Audi A6 Quattro 4.2 as a daily driver.
« Last Edit: 09:26:59 PM / 06-May-14 by seishuku »
Matt W.
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Offline IggyEGuana

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Re: Matt's S12
« Reply #1274 on: 02:02:01 AM / 07-May-14 »
damn thats a bummer

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Offline sideways_s12

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Re: Matt's S12
« Reply #1275 on: 09:22:36 PM / 18-May-14 »
That sux bro!


Offline seishuku

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Re: Matt's S12
« Reply #1277 on: 12:18:48 PM / 17-Aug-14 »
Know something I don't? :lol:
That's not a bad deal, I would have to source a trans or bell housing for it... In the end it'll still have the same crummy FS5W71C transmission behind it...

I think if I ever had to replace that trans again, I'll have to go with a FS5R30A from a TT 300ZX... The old W71C's just don't hold enough power.
Matt W.
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Offline Big Brother

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Re: Matt's S12
« Reply #1278 on: 06:42:32 PM / 17-Aug-14 »
Slushbox comes with it, give your clutch foot a break for a while! Might not be as fun as rowing, but that didn't take away anything from my buddy's R33 Skyline back in Italy.

Offline seishuku

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Re: Matt's S12
« Reply #1279 on: 10:03:46 PM / 17-Aug-14 »
Eh, the only "auto" I'd ever like is a double clutch (DSG), but even those are more manual than slushbox.
Besides, the Audi's got an auto (which will probably be swapped before too long).

It also means I'd need a custom prop shaft (of course I would need one with the R30A trans too), but those auto boxes aren't known for their power handling capabilities either.
Matt W.
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