over heat
- Thread starter Dave
- Start date
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Thursday Overheat Update
This morning -
Installed thermastat - gutted, just plate to slow flow slightly. Idled for an hour and never got over one needle above cold. 15 degree drop from top of rad. to bottom.
Road test - uphill, EGT - 1000-1100, Oil 180/190, 50 mph, outside temp - mild, hill - mild, no smoke - I can go 7 miles & hit red. Heavy throttle -same thing only in one mile. Hit red on gauge. Hop out use laser temp. front of head 245, rear 235, to of rad 225, bottom hose 215, turbo 525.
Next - Hydrocarbon analyzer stuck down into radiator. read hydrocarbons, and reading goes up with throttle. Our indication that we may be dealing with a head gasket - in addition to the fact the we have been through everything else 2 or 3 times. Radiator - new for all purposes, Thermastat - new and removed both, Water pump - looks essentially new, intercooler - none.
Current 11th our attempt - burb a bubble out of the block and give it a run in the morning to see if blue cruiser goes to Moab.
No head gasket pieces in cooling system. Only black smoke on full throttle, no obvious loss of coolant.
Still waiting for that DUH!! moment, but haven't stumbled into/onto it yet.
If we were marginal on temps I'd easily suspect air flow, heat shields, venting, and other minor fixes, but right now the temp issues is way out of line, so little fixed won't help.
I am confident we will eventually figure it out - just midly frustrating to not be driving at Moab - hey, but you know what - I'm probably saving my body with my first 4+ trail - saving it for AK06 -I'll donate the body in the north rather than the south.
Bob Bancroft - thanks for the help, issue still hot so any ideas still appreciated. I figure I'll order a 1HD head kit from AU and plow forward on getting bullet proof.
This morning -
Installed thermastat - gutted, just plate to slow flow slightly. Idled for an hour and never got over one needle above cold. 15 degree drop from top of rad. to bottom.
Road test - uphill, EGT - 1000-1100, Oil 180/190, 50 mph, outside temp - mild, hill - mild, no smoke - I can go 7 miles & hit red. Heavy throttle -same thing only in one mile. Hit red on gauge. Hop out use laser temp. front of head 245, rear 235, to of rad 225, bottom hose 215, turbo 525.
Next - Hydrocarbon analyzer stuck down into radiator. read hydrocarbons, and reading goes up with throttle. Our indication that we may be dealing with a head gasket - in addition to the fact the we have been through everything else 2 or 3 times. Radiator - new for all purposes, Thermastat - new and removed both, Water pump - looks essentially new, intercooler - none.
Current 11th our attempt - burb a bubble out of the block and give it a run in the morning to see if blue cruiser goes to Moab.
No head gasket pieces in cooling system. Only black smoke on full throttle, no obvious loss of coolant.
Still waiting for that DUH!! moment, but haven't stumbled into/onto it yet.
If we were marginal on temps I'd easily suspect air flow, heat shields, venting, and other minor fixes, but right now the temp issues is way out of line, so little fixed won't help.
I am confident we will eventually figure it out - just midly frustrating to not be driving at Moab - hey, but you know what - I'm probably saving my body with my first 4+ trail - saving it for AK06 -I'll donate the body in the north rather than the south.
Bob Bancroft - thanks for the help, issue still hot so any ideas still appreciated. I figure I'll order a 1HD head kit from AU and plow forward on getting bullet proof.
HZJ60 Guy
Tank Buster
HEY, Ive never heard of that. Is it possible to TURN an HZ INTO an HD by simply changing out the head????
Let's talk about this.
TB
Let's talk about this.
TB
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Not quite that easy.....
Fuel system would be replaced with the direct injections system and the HZ is of course much higher compression than the HD-T.
Fuel system would be replaced with the direct injections system and the HZ is of course much higher compression than the HD-T.
HZJ60 Guy
Tank Buster
Radd Cruisers said:
Oops. Please forgive my dumb-ass-ness.
Im sure Ill be more than happy with my HZ.
TB
- Joined
- Sep 28, 2002
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- 558
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- 8,122
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- Kamloops, BC Canada
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- www.shopraddcruisers.ca
HZJ60 Guy said:
No need as I myself am a dumb-ass also and by golly I like myself...
Prolly quite a few parts to make this work that I did not mention.
It would certainly also require pistons and probably rods, and I'd want to check the deck height of both HZ and HD blocks to make sure it's the same. Probably a laundry list of little stuff like water pump, maybe timing chain/gears/tensioner, etc. I'd sell a 1HZ to buy a 1HD-T, personally.
Steve
Steve
HZJ60 Guy said:
