Replacement cylinder head

**Bush65** · 29th December 2008, 07:04 AM

Originally Posted by Disco2tow

When you say the rad rodded is that the same as removed & cleaned or like new coils? He has put a new thermostat in.
...

Land Rover radiators are cross flow - the tubes run horizontal between the tanks on either side.

"Normal" radiators have vertical tubes between a top and bottom tank.

Gravity causes sediment in the water to drop-out of suspension. In a normal radiator the sediment falls into the bottom tank, which is easy to flush out.

Gravity works against cross flow radiators and the sediment drops out of suspension inside the tubes. As this happens the velocity of water flowing in the tube slows, which promotes sediment drop-out until the tube is blocked.

Flushing does not work because there is no water flow in the blocked tubes. The only way to clean the tubes is to remove the tanks from the core (they are soldered on) and physically push the sediment out of the tubes with a rod. Once the tubes have been rodded, they can be chemically cleaned to remove any remaining build-up. Then the tanks are soldered back on and pressure tested.

The above is a job for a radiator specialist (Natrad and the like) who do this sort of thing routinely.

I see the water pump and thermostat have been replaced. The other thing that is often overlooked is the viscous coupling for the fan - they become fault over time and it is surprising how often they are the cause of overheating (even when they look/feel ok).

**ladas** · 29th December 2008, 07:51 AM

Can't say much about the engine, but with the air con, if they say "they think it's the compressor" then they haven't a clue.

Any air con technician would be able to say one way or another if a compressor is faulty or not simply by looking at the gauges - and some touching of the pipes to assess temperatures at various point.

For the air con go to a specialist, I can recommend one or two in Perth if you want. Just PM me and I will send you their details

**PAT303** · 29th December 2008, 11:51 AM

I work with A/C alot and I am amazed by how many major parts are replaced on road vehicles when site vehicles that work far harder just need a clean out and re-gas.The compressors very rarely need replacing. Pat

**PhilipA** · 29th December 2008, 03:43 PM

I work with A/C alot and I am amazed by how many major parts are replaced on road vehicles when site vehicles that work far harder just need a clean out and re-gas.The compressors very rarely need replacing. Pat

Pat, the last one I had done was on a Mazda 121. The aircon guy explained/claimed that when the shaft seal went on the small rotaries, it usually grooved the shaft, and that they often had combacks from repeat leaks within a short time.
To avoid reworks and of course unpaid labour on their part, they recommended a new compressor.
This is probably a different scanario to big units or even the old Kirby reciprocators.
Regard sPhilip A

mike 90 RR · 29th December 2008, 10:02 PM

Originally Posted by Bush65

The above is a job for a radiator specialist (Natrad and the like) who do this sort of thing routinely.

So on that note .... I would recommend

Perth Radiator Center ... Beechboro rd .... in Bayswater

Old company // Been there for years
They rod out all my radiators when I buy a car ... and I get them to rebuild (recore) new radiator's

I shop no where else

**GuyG** · 30th December 2008, 12:42 AM

Did they do a complete rebuild or just those items already mentioned, if they did in fact do the complete rebuild then that sort of money is probably quite close. I had the motor in my rangie done last year and if I/we didn't do a lot of the work ourselves then it would have probably been that amount also or very close to it.

**loanrangie** · 30th December 2008, 12:58 PM

For 7K, when i lifted the bonnet i would want to be looking at an LS1 or i'd be taking it back. 2nd hand heads would only be a couple of hundred after a freshen up so $2800 labour is overkill for what is essentially a 1 day job.

**PAT303** · 30th December 2008, 01:31 PM

Second that. Pat

**GuyG** · 30th December 2008, 02:00 PM

Originally Posted by loanrangie

For 7K, when i lifted the bonnet i would want to be looking at an LS1 or i'd be taking it back. 2nd hand heads would only be a couple of hundred after a freshen up so $2800 labour is overkill for what is essentially a 1 day job.

So has anyone actually had the job completed for the 7K or is this just an estimate of what it would cost - not doing it yourself but drive in drive out?

**PAT303** · 30th December 2008, 03:16 PM

A mate of mine had his done in newcastle because he never changed the coolant.It was an '85 county and both heads were done in his driveway,the bloke that done it was a mobile mechanic and it was just under 3K,that was a couple of years ago and it has run trouble free since. Pat

Thread: Replacement cylinder head

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