Can’t turn over crank to set timing

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Horatius

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Fair enough. Though bare with me here (I can be thick lol) as I'm trying to understand their reasoning. Pressure testing a head involves pressurising the water jacket (with water or air) to find if there are leaks afaik. The cooling system runs at the same pressure (about 15 psi) regardless if it is turbo or not. If they can't replicate that they're in the wrong line of work?

The (likely) most relevant pressure for a cracked head in usage would be from compression (gases entering the cooling system causing overheating). Older non turbo diesels generally had a much higher compression ratio, so would be worse for this than a modern turbo diesel anyway as far as I know (which admittedly isn't that much).

I can see where they might not think it worthwhile, they're non repairable if cracked so if you've already got the head off just change it. They rarely ever seem to do a head gasket anyway, so it might not be considered worth bothering with.
 
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Newnav100

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Fair enough. Though bare with me here (I can be thick lol) as I'm trying to understand their reasoning. Pressure testing a head involves pressurising the water jacket (with water or air) to find if there are leaks afaik. The cooling system runs at the same pressure (about 15 psi) regardless if it is turbo or not. If they can't replicate that they're in the wrong line of work?

The (likely) most relevant pressure for a cracked head in usage would be from compression (gases entering the cooling system causing overheating). Older non turbo diesels generally had a much higher compression ratio, so would be worse for this than a modern turbo diesel anyway as far as I know (which admittedly isn't that much).

I can see where they might not think it worthwhile, they're non repairable if cracked so if you've already got the head off just change it. They rarely ever seem to do a head gasket anyway, so it might not be considered worth bothering with.
I get what your saying . I thought it was bullshit too , that’s way I rang around all over the place . Same answer every time . One place 180kms away said they had the equipment and could do it but refused to, as he wouldn’t be able to give a warranty on the work.
 

Newnav100

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Update. New head on. Timing all lined up. injectors and fuel rail on. Intake cleaned out and finger tight for now. It’s slow going in between work and family. Got the cat emptied out . Can’t believe how easy it was. Had a 15 inch masonry bit and just kept drilling close together then the whole thing popped out. Complete motor gasket set came with the head so replacing everything while I’m at it. I’ll get there eventually
 

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Boogieboots

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Did you keep the guts of the cat?
I saw a vid on YouTube recently where people were crawling under cars and cutting out cats for the platinum/palladium etc. (That was in the US)
Must be enough money in it for a bit of crack at least😁
 

Newnav100

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Yeah but it’s probably not worth the fuel money from where I am. And I didn’t guy it for the hell off it , it was already stuffed
 

Newnav100

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Alright I feel like an idiot but can someone please help me out here . I didn’t take any photos or mark anything when I took the turbo and cat off and now I don’t know which way it’s supposed to go back on. I can’t find anything in the several manuals I have they only have a picture of a turbo for a zd30. I can’t seem to line it all up.
 

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Old.Tony

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It should go:

Exhaust manifold -> Turbocharger -> Dump pipe -> Catalytic Converter -> Exhaust -> Toyota Hilux Driver

If the Hilux is in front of you, you got the turbo on backwards.

For reference: the turbocharger should have 3 bolts that connect it to the exhaust manifold. The dump pipe should have 4 bolts that connect it to the outlet of the turbocharger. The CAT should have 5 bolts that connect it to the bottom of the dump pipe.

The turbocharger should also have a air inlet pipe that comes off the front (where the air goes into the turbocharger) that then leads up to the air filter. It should have a solid pipe coming off its side that connects (via some pipework) to the intercooler.
 

Newnav100

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It should go:

Exhaust manifold -> Turbocharger -> Dump pipe -> Catalytic Converter -> Exhaust -> Toyota Hilux Driver

If the Hilux is in front of you, you got the turbo on backwards.

For reference: the turbocharger should have 3 bolts that connect it to the exhaust manifold. The dump pipe should have 4 bolts that connect it to the outlet of the turbocharger. The CAT should have 5 bolts that connect it to the bottom of the dump pipe.

The turbocharger should also have a air inlet pipe that comes off the front (where the air goes into the turbocharger) that then leads up to the air filter. It should have a solid pipe coming off its side that connects (via some pipework) to the intercooler.
Thanks. I know which order everything goes . It’s just where the cat bolts up to the exhaust is a triangle shaped join and the cat could bolt up to it in any direction. So basically because the join is the same shape in every direction I could have potentialy bolted the cat up the wrong way.
 

Old.Tony

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No worries, I really wasn't sure if you knew about the Hilux though haha ... wait, the turbo to exhaust manifold join is 3 bolts, turbo to dump pipe is 4, dump pipe to cat is 5 bolts ... so the turbo bolts on with the intake facing the front of the car. The dump pipe has to point downwards and the cat should be straight and not matter much about which way it connects, I don't recall if one of the bolts on the cat are offset to enforce a specific orientation. Does that help?
 

Newnav100

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No worries, I really wasn't sure if you knew about the Hilux though haha ... wait, the turbo to exhaust manifold join is 3 bolts, turbo to dump pipe is 4, dump pipe to cat is 5 bolts ... so the turbo bolts on with the intake facing the front of the car. The dump pipe has to point downwards and the cat should be straight and not matter much about which way it connects, I don't recall if one of the bolts on the cat are offset to enforce a specific orientation. Does that help?
Yeah it’s in the correct order just doesn’t seem to line up . I’m going to try mounting the exhaust manifold to the head bolting the turbo up to that loosely then putting the cat on. That way it can’t be wrong . Thanks for the help
 

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