A friend of mine had a HGF on his Freelander 1.8 petrol -2000 for a week ago. The car has now 46500 miles on the clock and he bought it for a year ago. I have decided to help him out and do the HG replacement for him.
As he described to me, the car had suddenly a serious loss of power until it stopped while he was driving without any warning (overheating). The symptoms where no water in the expansion tank and mayo in oil. It ran fine when cold.
Yesterday i removed the cylinder head and my observations is:
- Water in oil - brown emulsion.
- Inlet manifold gasket was replaced by the previous owner.
- OEM head gasket fitted with plastic dowels, elastomer loose from gasket.
- Cylinder head surface looks fine, no porosity and no indention from the fire rings.
- Liners are flush with cylinder head and even between each other.
- Cylinder head had original height (never skimmed)
- No melted plastic parts at the cylinder head/block
Hopefully he hasn't cooked the cylinder head soft, but time will show this.
Regarding the liner heights, I think these are to low to fit a MLS gasket.
So far, I think a reasonable plan would be:
- Have the cylinder head skimmed.
- Fit an uprated oil rail.
- Fit the uprated payen BW750 elastomer gasket with steel dowels (this one is less tolerant regarding liner heights compared to the MLS gasket)
- Fit a head saver shim ( http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT
- Reuse the cylinder head bolts
- Fit a new inlet manifold gasket
- Fit a new water pump, timing belt + tensioner
What do you think? does this seems like a reasonable plan that will work?