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Head gasket


Pierre Gillet

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To do a *proper* job of replacing the head gasket on a Caterham takes about 6-7 hours. You should check very carefully to ensure the head is completely flat and doesnt need skimming and also try to pinpoint the mode and position of failure. If you dont remedy the cause of the failure then it will most likely fail again.

 

Oily

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My limited experience (I have changed one) suggests that 6-7 hours is enough for an expert but if you DIY allow a weekend and/or a few evenings. I find it easier to do big jobs like this in small chunks of an hour or two.

 

The head will almost certainly need a skim, unf. the cams and valves need to come out for this. It isn't expensive to get heads skimmed (UKP 30) and if you don't want to strip the head yourself (you need a special tool to lock the cam pulleys and no you can't easily make one that is tough enough to stand spanner pressures) then this costs c.2 hours labour.

 

When I did mine I took the head off and delivered it to the engineering works, the bill was around (UKP)

 

Gasket set 75

Cambelt 28

Skim 30

Head strip and rebuild 60

VAT for Gordon 30

Total UKP 230 app.

 

Crack test if required (I took the risk) 35

New head bolts if reqd, 40 for the set.

New cambelt tensioner if paranoid or the old one is rumbling.

 

It is a big job, you will need a good toolkit, a lot of patience and a manual. The Haynes is actually OK and covers the main jobs with enough accuracy. It's a shame you aren't nearer Saumur, if you were I'd help.

 

 

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Thanks OldBlattered,

Humm, I am a bit scarred now...but at the same time I parallel the 230 £ with the 1400 £ of the DVA 155 bhp kit (1.6 K) which includes a head fully ported, and I guess skimmed, on an exchange basis.This would mean getting the kit for circa 1200 £, a very good deal indeed (my car is not SS).

Questions:

- would a 30000 km motor be able to stand such power increase?

- how is the exchange of heads performed time and moneywise ?

- car is leaking coolant when hot, but there is no internal leak (no apparent pressure in the cooling system).Can I still use it safely?

I appreciate very much your proposal regarding the manual, but I think I will buy it anyway because I will need it quite often.... Can you tell me which title is best suited?

Really too bad that you are located not so close from Paris...

Cheers,

 

Pierre

 

Edited by - Pierre Gillet on 10 Jun 2003 13:33:14

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The head gasket fails in one of two ways. Sounds like your compression rings are still intact... but they won't be if you use the car. The loss of coolant will introduce air pockets and reduced pressurisation will lead to more potential hot surface cavitation.

 

The failure you have suffered has been fixed by a change in spec of the head gasket, although the Mike Satur gasket that DVA supplies is also immune to this mode of failure. There is an area of the water jacket retaining silicone bead that is compromised by an oil path that is under pressure. This promotes the start of coolant leakages at the head gasket. This sort of failure is relatively easy to fix, but as Oily says, close inspection is necessary to ensure ongoing reliability.

 

DO NOT USE THE CAR.

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Scarred or scared? Scarred is what I am AFTER a job like this, I'm generally scared before...

 

The Haynes manual for the Rover 214/414 is quite good, for a change, and very cheap. There may be a French eqvt.

 

If you buy the DVA you will still have to buy a gasket, belts etc. so the saving is smaller than you think. Unless that price is fitted?

 

Do stop using the car. It will not heal up and you risk wrecking the engine.

 

As for being nearer Paris, no thanks. I visited at the weekend and at €5 for a demi and €250,000 for a small 2 bed flat in 5°arr I am better off here. Nice city though, good to visit, nice girls to look at.

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Thank you for correcting my broken English *wink*. I am so scared that the job will be done by Rover at St Germain. They have no idea of what a Caterham is

☹️ though, but I explained it will be easier to work on it than on an MGF *thumbdown*

By doing so, I am hoping to go to les Coupes de l'Age d'Or at Monthléry on June 28 with my Seven but without scars *wink* . Probably the last time the event will take place as the oval track might lose its licence.

As for the DVA K03 kit it does include a heavy duty head gasket and even head bolts!

 

 

Pierre

 

Edited by - Pierre Gillet on 10 Jun 2003 20:17:57

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Arf! What planet is your friend from?

 

Rover engine? Yes, but in a Caterham installation, fitted with a Caterham shallow sump. i.e. not used as Rover intended.

 

The shallow sump results in excessive oil temperatures which are hard work on the gasket.

 

Either way, the engine survived the best part of 6 years which takes it entirely outside the only applicable warranty period (12 months from caterham).

 

Also you have a history of fitting the incorrect coolant against advice given, with the resulting coolant leaks giving the possibility of hotspots and other cooling related issues. All told it is not surprising the poor little gasket failed.

 

Save your time and just get the car fixed.

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Does it have to be a Rover dealer? Any *decent* mechanic can change a head gasket properly if he sets his mind to it. Mind you, maybe it is true what they say about French engineers:

 

In Heaven, the police are English, the cooks are French, the engineers German, the lovers Italian and everything is organised by the Swiss.

 

In Hell, everything is exactly the same, except that...

 

The English are the cooks

The engineers are all French

The police are all German

The lovers are the Swiss

 

And the whole bloody shambles is organised by the Italians! 😬

 

Good luck Pierre, when you get it sorted we will have to meet up somewhere in the middle, maybe near Chartres, for a blat *thumbup*

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Well , Oldbattered, I thought that Rover might better know the K Series engines than other mechanics given the fact that this type of engines is not that common in France. It seems that K series engines are a bit "exotic" *wink*

By the way, are you talking about a mechanic or an engineer? In my case I just need a mechanic 😬. Till now, I have always performed the maintenance of my cars by myself, and thus do not have a mechanic that I would trust.

All right, will see.

Relative to the coolant issue raised by Peter who knows the energy I have spent to follow his recommendations for the right coolant spec. without being successful,this Rover concessionnaire is using exclusively Castrol products. Does anybody know if their coolants are suitable for K series motors?

 

Pierre

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Pierre - don't be too scared. I did my engine this Winter, and the part involved with changing the head gasket is very easy, and no more than about 5 hours work. The only special tool needed was a camshaft locking tool which cost £3.

 

The head gasket is the real weakness of the K series. the rubber comes away from the metal part and so they leak when hot. A mechanic told me they go every 50k miles in the Rover/Landrover application. PC obviously knows what he is talking about with these things, but you may well find that the head etc is just fine, and you can just put it all back together again

 

2 months after I finished my engine, my wife's Freelander blew its head gasket showing exactly the symptoms you describe. Took me 5 hours, and it is a much bigger job on a Freelander because you have to remove quite a lot of the car to get at the engine. And I am not soemone with any eperience of working on engines until last Winter. Parts came to £110.

 

The Haynes manual for the Freelander was excellent by the way - it worked just fine for the R500 rebuild

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5 hours for a head gasket is impressive, and you reckon you aren't a mechanic? It took me longer, albeit spread over a few days. To second this though, it isn't too bad a job, just long and it seems like EVERYTHING is coming off. Pierre, if you already do your maintenance and you have the time, especially if you have a pal who can help, get a decent manual, buy the tools you need, and go for it. Tu t'en sortiras!
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Thanks very much for your kind support.

I am just back from Le Mans where I was able to chat with Fat Arnie and others. All these Sevens made me miss mine. Sadly, I had to use my Defender TD5 110 SW to travel on the autoroute, but finally found it OK at 130 km/h on the speedo. People now in France are so scared to loose their driving licence that they seldom speed at more than 140 km/h it seemed to me.

 

Pierre

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After the brilliant change of the induction collector gasket by a Rover concessionnaire, the leak is always there *eek*

I found the Team Durville which races Caterham(s) at the French Caterham challenge. Jérome durville, a very nice guy has agreed to take care of my Seven *thumbup* for the head gasket removal.

 

Pierre

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