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[05omegav6]

Incidentally, not using coolant, and not overheating... primary issue is no cabin heat.

Car is mostly used for short journeys.

For clarity, I haven't seen the car, and it belongs to a colleaguey who could really do without a)spending a fortune to fix it or b) replacing it.

Wonder if it's worth a pumt changing the thermostat

Late "k" engines have a remote thermostat fitted under the rad,its not unknown for the original position behind the water pump to have one fitted as well with fairly dire consequences,worth checking as it would be a cheap and easy fix(there should be a dummy stat in there with no guts in it).If its not pressurizing or overheating then it could even be the heater tap down on the bulkhead in the engine bay(if the latest ones still have it and I think they do)

Heater was working following a decent run, 40+ miles, but has now given up again... There is also mention of rad weld type stuff being used

What is this heater tap, and what does it do?

[henryd]

Incidentally, not using coolant, and not overheating... primary issue is no cabin heat.

Car is mostly used for short journeys.

For clarity, I haven't seen the car, and it belongs to a colleaguey who could really do without a)spending a fortune to fix it or b) replacing it.

Wonder if it's worth a pumt changing the thermostat

Late "k" engines have a remote thermostat fitted under the rad,its not unknown for the original position behind the water pump to have one fitted as well with fairly dire consequences,worth checking as it would be a cheap and easy fix(there should be a dummy stat in there with no guts in it).If its not pressurizing or overheating then it could even be the heater tap down on the bulkhead in the engine bay(if the latest ones still have it and I think they do)

Heater was working following a decent run, 40+ miles, but has now given up again... There is also mention of rad weld type stuff being used

What is this heater tap, and what does it do?

Most modern cars have heat flowing through the matrix all the time,from memory the 25 has a heater tap similar to what was fitted to a mini years ago whereby it stops the flow of water through the matrix,if Radweld has been added at any time the matrix will probaly be clogged up,a back flush will help that a lot(my 75 had many cans of fix added to it before I got involved and some still flushes out even now almost 2 years later)

[05omegav6]

Ok, that makes sense... So as a course of action, check that valve and a compression test... Ifboth ok, then coolant flush and go from there...

[78bex]

Might be of help

https://www.youtube.com/watch?v=8UXvQA-wOTM

[henryd]

Ok, that makes sense... So as a course of action, check that valve and a compression test... Ifboth ok, then coolant flush and go from there...

If the coolant is clean with no oil deposits and no pressure when run up its unlikely to be the HG,K series motors normally let you know in short order if they are Fubar

[TheBoy]

K symptoms are fairly classic - fluids mixing and/or cylinder pressure issues.

Be aware that *any* cooling glitch on this engine normally kills the gasket, as there is little tolerance to rapidly changing coolant temps, and the coolant capacity is tiny (to meet the criteria of reaching temp in 90s).

*IF* you have to change it, you need:
HG
Bolts (Can't reuse, despite the measurements in the official docs)
Inlet gasket
Exhaust gasket and I think there is a manifold to cat gasket from memory.

You *may* get away with reusing the cam cover "sheet"/gasket

Note, if buying bits, will be later K series.

[tidla]

Another helpful video to help make up your mind.

https://www.youtube.com/watch?v=-i-op1aceUg

[05omegav6]

Another helpful video to help make up your mind.

https://www.youtube.com/watch?v=-i-op1aceUg

Fanks

[05omegav6]

What's the labour time likely to be is two days diy realistic?

[Lazydocker]

What's the labour time likely to be is two days diy realistic?

Easily doable in a day but if you take the head off you really should have it checked, pressure tested and skimmed if needed.

[henryd]

What's the labour time likely to be is two days diy realistic?

I can have the head off a front wheel drive K series in less than an hour,going back together takes longer as liner heights etc need careful checking,the multi layer steel gasket isn't the life saver everyone thought it was and the latest payen BW750 blue elastomer gasket is much more tolerant of low liner height, if the head has got hot its also worth using a head saver shim which is glued to the head with weldseal to stop the gasket wearing rings in the now softer head material.

[henryd]

Al, if your doing this as as earner forget it,if you need a cheap nippy shitter for work it makes more sense as they aren't a bad drive

[05omegav6]

Al, if your doing this as as earner forget it,if you need a cheap nippy shitter for work it makes more sense as they aren't a bad drive

Considering it as a paid repair job for current owner rather that trying to turn the car round for a profit... Been quoted £650 which sounds like alot

[Lazydocker]

Al, if your doing this as as earner forget it,if you need a cheap nippy shitter for work it makes more sense as they aren't a bad drive

Considering it as a paid repair job for current owner rather that trying to turn the car round for a profit... Been quoted £650 which sounds like alot

Sounds about right for a garage to me As long as that includes head testing etc

[05omegav6]

No mention of that... Typical cost