Mud-club

Vehicle & Technical => Range Rover => Topic started by: pongo_bob on March 27, 2007, 22:38:51

Title: V8 coolant loss
Post by: pongo_bob on March 27, 2007, 22:38:51

Loosing a litre of coolant every 50 miles and a puddle on the drive overnight. Ordered some head gaskets and new head bolts. Started stripping down the top end ( even removed the exhaust manifolds ) to find the inlet manifold bolts at the back were finger tight  :roll:

Title: V8 coolant loss
Post by: mark.yellow.series.3 on March 27, 2007, 23:25:19

if theres a puddle on the drive, why the head gaskets?

proibibly just a water pump or hose or summat :D

Title: V8 coolant loss
Post by: pongo_bob on March 28, 2007, 11:24:22

It was coming from the back of the engine, running around the gearbox and dripping off the bell housing. As I couldn't see where it was coming from and it's a 4.0 and now at 110K miles I suspected the worst.

Title: V8 coolant loss
Post by: hairyasswelder on March 28, 2007, 17:09:51

Quote from: "pongo_bob"

It was coming from the back of the engine, ........ I suspected the worst.

Heater matrix ?? Would rather do the heads  :wink:

Steve

Title: V8 coolant loss
Post by: dave362 on March 29, 2007, 08:57:24

Remember the engine slopes front to back! When I fitted my thermostat housing back on badly, it leaked into the inlet valley, ran down bell housing and then dripped down about 3 feet from where it was leaking from

Title: V8 coolant loss
Post by: thepsychoman on March 29, 2007, 12:26:44

Core plugs?

Title: Re: V8 coolant loss
Post by: Range Rover Blues on March 30, 2007, 01:46:26

Quote from: "pongo_bob"

to find the inlet manifold bolts at the back were finger tight  :roll:

I think the clue was in this statement.  I hope that fixes it Pongo :wink:

Title: V8 coolant loss
Post by: pongo_bob on April 06, 2007, 22:43:33

Looks like the coolant leak is sorted now \:D/  RRB . 1 week and the level hasn't changed a bit.

 According to the manual the coolant comes up the block at the back to  the inlet manifold , flows to the front of the manifold and on to the rad. On my '95 4.0 the coolant ports at the back of the cylinder head are blanked off by the inlet manifold casting.
I guess that makes sure the coolant goes through the head casting rather than the inlet manifold.

 Did LR just not update the manual or have I got a mutant manifold ? The manual must have been right at some time as the valley gasket has got holes in the right place.

Title: V8 coolant loss
Post by: Range Rover Blues on April 07, 2007, 01:57:53

Is yours a serpentine belt engine? they did have the cooling system reworked a little.  I notice most that the heater is so much better.

Title: V8 coolant loss
Post by: Garth on April 15, 2007, 23:25:32

3.9 1991 is the same as yours

Thought the same as you when I took my manifold off but checked part numbers (part of the casting somewhere) and its the correct one for my engine number.

Title: V8 coolant loss
Post by: Range Rover Blues on April 16, 2007, 01:13:10

Yeap, had a look and mine's the same.  Can't use mine as a benchmark though as Blue is a Heinz 57.  Started life as a 3.5 flapper and now it's a 3.9 Hot wire, borg-warner T-Box and a few other toys.