Potential Head Problem

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crepello
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Re: Potential Head Problem

#16 Post by crepello » Fri May 17, 2019 4:59 pm

Mr Teddy Bear wrote:
Fri May 17, 2019 4:38 pm
A decent garage will be able to do both a cylinder compression test and a cooling system pressure test; that's more professional than just making a guess!

The through bolt passages also act as a oil return so there could be a leak between one of those and water jacket, but it would be nice to eliminate all other possibilities first.

You need to entrust any work done to proper experts, there are lot's of [head gasket/thro' bolt/oil rail] permutations including SAIC's latest with a different through bolt & tightening sequence.
Mind you, oil return to the sump is at crankcase (low) pressure, and coolant at higher pressure, so it would be perverse for oil to migrate against the pressure differential.
However, it has been known for poor HG repairs to leave out the front/cambelt end hollow dowel, through which pressurised oil does flow, on its way to the camshafts and tappets.

I suspect that there are garages out there now who chalk up a 'win' if their work or advice removes another Rover or K-series from the roads!

961tat
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Re: Potential Head Problem

#17 Post by 961tat » Fri May 17, 2019 6:00 pm

cybercontroller wrote:
Fri May 17, 2019 9:48 am
Had the Rover nearly three weeks. Felt it a good idea to get a full service done which is when this was pointed out. The Service History is sketchy and there was supposedly a recent service that is not in the history but no way to verify that. The oil is clean though.

I do think it is worth getting head gasket done as you say. I believe there are improved upgraded ones available now too.
Only 3 weeks it could have add a new gasket for all you know and if it has you should be able to tell what type looking between the head and block , I agreed with mr teddy bear go to a garage and get cylinder and coolant pressure check , if it's not broke don't fix it .

I have fitted the later coolant header tank on both my k series (off cars 03/ 04 onwards ) with warning light in dash , if it does fail you won't be driving down the motorway until it is seized and cylinder head may be used again .

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Re: Potential Head Problem

#18 Post by ROVER-25X » Sat May 18, 2019 8:59 am

Call Dave and Kayleigh, they run MG-ROVER Mobile Mechanics, they will come to your door and fix it,
they keep spare heads and other engine parts in their vans if any parts are a lost cause on yours but
I doubt it will be that bad.

They have been doing HGF repairs for years now and are tired and tested.


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JOHNDQ
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Re: Potential Head Problem

#19 Post by JOHNDQ » Sat May 18, 2019 10:04 am

The best 2 gaskets are the Land rover/Payen gasket with the head saver shim and the "new" MG 6 layer gasket (also made by Payen) I wouldn't worry to much about the uprated bolts or the revised torque settings since the supposed 10.9 grade bolts are not available after market and of the many HG I've done only ever 1 set had 10.9 stamped on the head. Your better getting original bolts with "TX" stamped in them so you know your getting good bolts. A lot of the cheap bolts are known to be poor quality and over stretch some have even know to bottom out on the sump at the gearbox end. Don't forget Rover/powertrain done countless hours of testing on the damp liner K Series when they knew it had a fault and found no evidence that fitting stronger bolts made any difference. The new K Series block is cast completely different from the old one and is much stronger that's why it has the stronger bolts and tightening torques

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Re: Potential Head Problem

#20 Post by JOHNDQ » Sat May 18, 2019 10:13 am

I agree with 1234dist if there's any evidence to believe there many be any fault with the HG do it now. If a fault has started to arise between a oil and water gallery if it only ever get worse and should the seal fail completely the entire cooling system will be ruined. Once oil gets into any rubber parts (i.e hoses, water pump seal ect) it will cause the rubber to go soft and expand and unfortunately no compression test or head gasket chemical test will show that up. They will only up a fault on the compression seal of the gasket which only happens if the liners have dropped or the head is wrapped both mostly caused by over heating and to be fair once overheated the cylinder head is scrap anyway since the alloy will be soft.

cybercontroller
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Re: Potential Head Problem

#21 Post by cybercontroller » Sat May 18, 2019 5:10 pm

So collected the Rover this morning and had a look at he brown sludge in the coolant expansion tank.
They cannot say for sure whether the head would need skimming but feel the HG replacement is very probable. There are some better uprated ones which should cure the problem so that is what I think I need to look to.

I have attempted to attach some pictures of the expansion tank and the sludge but it does seem to allow me to do so.

cybercontroller
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Re: Potential Head Problem

#22 Post by cybercontroller » Tue May 21, 2019 5:22 pm

Having a look at the Service history.
Main Service at 3344 miles (Aug 2006)
Another with Brake Fluid change at 10025 miles (July 2008)
Again with Brake fluid and Coolant change at 18064 (July 2010)
Again at 21864 (July 2011)
Again at 23722 ? (July 2012)
Again with Brake Fluid and Coolant change at 26360 (July 2013)
Again at 29939 with stated Cambelt and Power steering belt (July 2014)
Last in the book at 39785 with the Brake Fluid and coolant change

The mileage is now 59800 and the garage I bought it from said there had been another service since then but I am not taking that as gospel as they must have been aware of this problem. Which must have occurred since the last stated service.

I am going to look to contact a few of the options mentioned previously here.

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1234dist
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Re: Potential Head Problem

#23 Post by 1234dist » Tue May 21, 2019 6:44 pm

60k, defo time for a gasket then :laughing2
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GTiJohn
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Re: Potential Head Problem

#24 Post by GTiJohn » Wed May 22, 2019 7:09 am

cybercontroller wrote:
Sat May 18, 2019 5:10 pm
I have attempted to attach some pictures of the expansion tank and the sludge but it does seem to allow me to do so.
Flickr, or a similar photo hosting sjte, is what you need.

If there isn't a 'how to' guide on this site already, there will be soon...
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1234dist
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Re: Potential Head Problem

#25 Post by 1234dist » Wed May 22, 2019 7:16 am

Since my last post, I've had a 216 in that was losing water but no mayo, 4hrs later the hg was done and now nothing leaks.

Now, when they came in to see, they decided to have a full service done as well.

Just ger er done.
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cybercontroller
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Re: Potential Head Problem

#26 Post by cybercontroller » Wed Jun 05, 2019 1:20 pm

Managed to get booked for later this month with MGRoversolutions who look pretty good. MGrovermobile are booked until mid October and Kayleigh directed me to Russell who was actually already on my list.
So hoping all will be sorted by the end of the month.

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Re: Potential Head Problem

#27 Post by cybercontroller » Fri Jun 28, 2019 11:42 am

After a dead battery on the Wednesday night that required RAC assistance, Russell came by yesterday and changed the HG as well as the one below which was also a bit tatty. Flushed most of the crud out but this is still ongoing and will require another coolant change in the near future.
Took for a good test run yesterday afternoon and the gauge held just under halfway throughout, not that it overheated previously for me but as I got caught in some rush hour traffic and it was quite a hot day I think this is quite promising.
Commuted in today which is a around 20 miles each was and got the MOT booked for next Wednesday which I am hoping all will be fine so will look to use early next week too.

cybercontroller
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Re: Potential Head Problem

#28 Post by cybercontroller » Wed Jul 03, 2019 4:11 pm

The Rover 25 passed the MOT on a retest today.


Date tested
3 July 2019
Pass
Mileage 59,957 miles

Expiry date 29 July 2020


Monitor and repair if necessary (advisories):
•Vehicles internal headlight adjuster altered to recheck lights ()
•Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

It needed some bulbs changed to get through but that is a trade off I was happy with.

Will look to get the pads done at the next service but any thoughts on the Internal adjustor.

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Re: Potential Head Problem

#29 Post by montegoman » Wed Jul 03, 2019 6:47 pm

I would guess that the electric headlamp adjustment was on one of its lower positions and they had to put it back to 0 to check the beam position. No more than that.
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cybercontroller
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Re: Potential Head Problem

#30 Post by cybercontroller » Thu Jul 04, 2019 9:43 am

That would be dead handy. I will ask them about that when I go and collect on Saturday.

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