Hey, my friend recently did a rebuild on 1hz 105 because of a cracked head and piston, he said it is common for 1hz, my question is what causes this crack and how can i avoid this for my 1hz 105 that ran around 220Lkm
what causes a cracked 1hz head? (1 Viewer)
- Thread starter jeffKerala
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AussieHJCruza
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Are you turboed?
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No. Both N/A engine
AussieHJCruza
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Ensure that the cooling system is kept in 100% condition then.
IDI diesel engines are more prone to head issues because the pre-combustion chamber design puts more heat into the cylinder head than a DI diesel, and subsequently into the cooling system.
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so avoiding overheating situations is the key, right?
Just bought an imported LHD GCC source 1996 HZj80 with an aftermarket turbo, arrived Monday night and I've been driving with a smile on my face all week. It's Friday night and I'm making a list of maintenance 1st priorities, etc...
1) coolant reservoir is low and it has a blue-coolant at the bottom. Can anyone give me a straight-forward answer on what to top this beast off with before I can do a full-coolant-flush?? Thanks for any help
1) coolant reservoir is low and it has a blue-coolant at the bottom. Can anyone give me a straight-forward answer on what to top this beast off with before I can do a full-coolant-flush?? Thanks for any help
Wow. Thank you!!
AussieHJCruza
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Don't add this without a flush!
Why??? And if not, should I just top off with distilled-water for a week or two before I flush? Any insight you can provide is appreciated.
AussieHJCruza
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The genuine Toyota coolant isn't 'compatible' with most other coolant and forms sludge when mixed with other coolants.
Thanks AussieHJCruza that's what I thought and why I asked about top-off not what a full-flush would be best. I figured I'd wait to here from others. I'm still looking for any advice on what to top-off with for a few weeks. I suppose I'll just add some distilled-water for now?? Since I don't know what the current blue-coolant is?
awesomeissquid
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Adding distilled water is safest if you already have an unknown in the system for the time being. When the time comes flush everything through until it comes out clear enough for your satisfaction.
