Since this truck had a cracked head when they sold it to you are they going to be coughing up some of the funds for the new head?
Or is it a buyer beware thing.
Or is it a buyer beware thing.
Pulling the head ?
- Thread starter light_duty
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- #22
Basically they offered me a used head to be placed in the back of "the next LJ78 that I buy". And they said they'd give me $1000 off "the next LJ78 I buy".
Too bad the head inside the truck would be siezed as contraband. And there's no way I'm buying another truck from them regardless. In my last email I suggested they simply send me $500 US and we'd call it even. Surprisingly, I haven't heard back.
Just say "no" to carjunction.com!
Robin
Too bad the head inside the truck would be siezed as contraband. And there's no way I'm buying another truck from them regardless. In my last email I suggested they simply send me $500 US and we'd call it even. Surprisingly, I haven't heard back.
Just say "no" to carjunction.com!
Robin
- Thread starter
- #23
Speaking of, here are some pictures of the head:
Cylinders 3 and 4
Cyl #1
And a picture of the cylinder bores. Note that the honing marks are still visible on the cylinder walls. No sign of scoring or anything like that.
Robin
Cylinders 3 and 4
Cyl #1
And a picture of the cylinder bores. Note that the honing marks are still visible on the cylinder walls. No sign of scoring or anything like that.
Robin
Bores look good Robin. One thing when you put it together, don't clean the carbon off the tops of the bores. This build up helps to stop oil leaking past the oil rings. That's one thing that I have found having changed the heads on a few, leave the carbon alone, it will build up again anyway but for the first couple of thousand miles the engine will smoke like a pig.
The head cracked in exactly the same places it always does except when mine went and also on a few others there were cracks beteen the exhaust valve and the pre combustion chambers as well.
Mine went between the valves on all 4 cylinders and between the exhaust valve and pre-comb chamber on 2 and 4.
Glad you got the head off, putting it back is a bit quicker I have found.
The head cracked in exactly the same places it always does except when mine went and also on a few others there were cracks beteen the exhaust valve and the pre combustion chambers as well.
Mine went between the valves on all 4 cylinders and between the exhaust valve and pre-comb chamber on 2 and 4.
Glad you got the head off, putting it back is a bit quicker I have found.
denis
(O) toyota nut (O)
I have a head that displayed some hairline cracks between the valves similar to what your pictures show, but it tested OK, and has done a couple thousand miles including race miles with no issues. What does the head gasket look like ?
- Thread starter
- #26
The gasket is actually sitting on the block in the last picture. It seems to be in fine shape, but this is the first HG i've done so I don't really know what I'm looking for.
I've read on this forum about 3B heads running fine with cracks between all valves, but I guess it depends on how deep the crack goes and whether or not it reaches a water jacket. Denis, you're running a 2L-T, right?
Robin
I've read on this forum about 3B heads running fine with cracks between all valves, but I guess it depends on how deep the crack goes and whether or not it reaches a water jacket. Denis, you're running a 2L-T, right?
Robin
- Thread starter
- #27
Silly question?
Can I re-use the precups from this head? Or is it wiser to replace them?
Thanks!
Robin
Can I re-use the precups from this head? Or is it wiser to replace them?
Thanks!
Robin
denis
(O) toyota nut (O)
light_duty said:
I'm not running the head myself, a friend does. 2L-T it is, indeed (first gen.) The cracks didn't seem to propagate very any further beyond the surface, at least it didn't look likethey did. The HG went out between a water passage and the cylinder IIRC. Weird stuff. He had the big white smoke when engine was cold thing. Another guy I know had the same thing, but this time it was a crack at the bottom of a cylinder wall (1KZ-TE). Just make sure you know where your problem comes from before you start spending money IMO. If you don't have the head tested you can't be sure its the culprit. (it probably is).
crushers
post ho
if the precups are not cracked then it is fine to reuse them.
the cracks between the valves can widen when the engine is warn hence the need to do a coolant pressure test when the engine is at operating temp and not when cold.
cheers
the cracks between the valves can widen when the engine is warn hence the need to do a coolant pressure test when the engine is at operating temp and not when cold.
cheers
crushers said:
In the UK on the Hilux Surf, a lot of them seem to come into the UK with the cracks already there, they run fine for a while - mine did up to a year before the cracks widen enough to cause problems.
However the problem is they never get better, they don't heal themselves and they will go at some time. Problem being if they catch you at the wrong time and you don't stop immediately and allow the engine to cool, you can cause other problems (it's rare but if water gets into the combustion chambers too much and contaminates the oil, you could be talking piston or bottom end damage.
crushers
post ho
related story.
i was approache dby a customer to take a look at their dead 2CT van. the head was removed and the head was cracked BADLY but that was not the worse of their problems, it seems they kept driving the unit long after it should have been shut down and ended up with 2 cylinders completey buggered. i have never seen such a mess.
anyone know where i can pick up a rebuild kit for this engine?
cheers
BTW, the problem with cracked precups is the chance they can break off and fall into the combustion chamber and get pounded by the piston buggering the piston and maybe even the cylinder wall...
i was approache dby a customer to take a look at their dead 2CT van. the head was removed and the head was cracked BADLY but that was not the worse of their problems, it seems they kept driving the unit long after it should have been shut down and ended up with 2 cylinders completey buggered. i have never seen such a mess.
anyone know where i can pick up a rebuild kit for this engine?
cheers
BTW, the problem with cracked precups is the chance they can break off and fall into the combustion chamber and get pounded by the piston buggering the piston and maybe even the cylinder wall...
