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Levi
10-08-2002, 07:45 AM
I found number 3 melted. All the metal must have gone out the exhuast. Did a small amount of damage to the wall, I may be able to remove the damage with some honeing, but the dog ear is broke, so every thing is basically fucked.

The other 3 cylinders are like new, except number 2 had a small amount of oil in it, it seems weird.

The top side of the head is also coated with some sort of oil repellant coating. I assume this is normal.

I am not sure, if I want to go through another full rebuild.

Anyone have any ideas on total cost for replacement parts? if it too much money, I may just trade it for a dune buggy.

My Father wants me to put a RWD 340 in it!.... Holy Shit!
CrazyMoparGirl
10-08-2002, 07:57 AM
Are you sure you had a piston in there?
Levi
10-08-2002, 10:52 AM
I assume thats a joke right?

I am not very happy, after just doing a fresh engine.

I guess the one injector went bad, any ideas?
whore
10-08-2002, 11:35 AM
FYI, thats why people use forged pistons.

If pieces went out your exhaust, your turbo is most likely fux0red
whore
10-08-2002, 11:37 AM
ideas? we'd need more info. what was happening when it died?
Levi
10-08-2002, 12:43 PM
well the story goes, I had very bad explosions coming out of the 3" dump pipe. I mean bad heistation and everything. I popped the timing cover for the cam and found that it was not centered, while #1 was @ TDC.

So we pulled the timing covers and checked the other marks and they all were way off from where they should be. We put everything back into what should have been perfect timing, and the car ran like shit. We3 checked the flywheel marks and they were gone! All we could see was 4 punch marks?

We ran it around the block twice and it was missing in lower gears, but ran like a scalded dog in 3rd and 4th and hit a soild 15 psi very quickly.

Then I notice smoke inside the car, I pull over and the entire engine is soaked with oil, from the dipstick and was smoking because oil got all over the turbo. I assumed PCV went bad or something, was causing it to puke oil. I drove it back home and it start making a slight knock, and no power, but turbo spooled up just fine. In the driveway, smoke was starting to now come out the exhaust. I guessed I blew a ring or piston and I was right, I melted a piston.
mpbiv
10-08-2002, 01:16 PM
Ok...... another question

Did you re do the ignition timing when you re did the cam timing?

You didn't mention checking ignition timing specifically which is why I asked.
Levi
10-08-2002, 02:23 PM
Yes, we pulled the cap and made sure it was pointing to number 1 and it was, and we even pulled the plug and made sure it was TDC #1


it was weird!
mpbiv
10-08-2002, 02:38 PM
I should have been more specific, did you check the ignition timing with a timing light?
Levi
10-08-2002, 02:47 PM
Timing light what is that????



Just kidding. Yes. I moved the timing all over the place, before we lost the marks.

Funny thing is they showed up with the light in the exact spot. I guess we changed the timing exactly backwards.

I was talking with Gary this morning about it and he said I had prolonged detonation. He also seems to want me to continue to build my car, but no one around me has any ideas, and I am all alone on this.
whore
10-08-2002, 04:04 PM
you moved the ignition timing all over the place... but mpbiv wants to know what it was set at? 12* BTDC? 15*?

I would say that if you were driving around boosting it with the cam timing all screwed up enough to cause "huge explosions" and terrible breaking up... thats how you broke the piston right there. It it was trying to come up and was 45* BTDC when the plug fired, and who knows where the cam was... well thats a lot of abuse for a cast piston!

Time for a rebuild, maybe a turbo rebuild, and make sure things are right before you boost to 15psi!
Levi
10-09-2002, 08:20 AM
I had the engine timed right around 8 advance.


And what you said makes sense. Now the question is how would I correct it? I assume timing wheels can only go on one way right?
CrazyMoparGirl
10-09-2002, 09:17 AM
Originally posted by "Levi"

I assume thats a joke right?

I am not very happy, after just doing a fresh engine.

I guess the one injector went bad, any ideas?

yes it was a joke, I've never heard anyone describe one piston completely melted, especially after a rebuild
Levi
10-09-2002, 10:11 AM
Really, well thats, just me for ya. I change all the rules!
Iroc Joe
10-09-2002, 10:45 AM
In a related story, I finally got the truck running right again...sorta. The distributor moved so I spun it back in place....still stumbled....replaced fuel filter...much better but still low rpm stumble. Fucking p.o.s. Napa fuel pump....time to get dirty replacing it.

But hey, I've still got all 8 pistons :D

j/k mang :)
mpbiv
10-09-2002, 12:01 PM
Timing is a major key to any engine. Its absolutely critical, and I admit I have also been learning this the hard way.
Levi
10-09-2002, 12:18 PM
The school of hard " knocks".

What a way to get an education!
whore
10-09-2002, 04:22 PM
Originally posted by "Levi"

Now the question is how would I correct it? I assume timing wheels can only go on one way right?

the sprockets can, yes. But the belt can go on a million different ways
whore
10-09-2002, 04:23 PM
and also.. if the injector was totally bad.. it wouldnt melt the piston.. it would just have a miss. Think about it... no fuel in the cyl to burn.