I am about to remove the head on the MGTF 160 (again). How good are the redesigned N series head gaskets or should I stay with the MLS type?
Good point, thanks for mentioning the liner heights.As I see it, the fundamental question here - before considering which type of multi layer gasket will be most suitable - is :- is any type of multilayer gasket acceptable to use?
Surely it can only be established whether to use a multi layer or elastomer once the head has been removed, at which point a multi layer gasket will be acceptable if all liner heights are a min. of 3 thou above, and all of an even height. If this criteria isn’t met, then an elastomer gasket has to be used.
Of course, the ‘again’ may point to you having prior knowledge of this particular engine, and you already know the liner situation.
The SAIC head gasket is an MLS typeHow good are the redesigned N series head gaskets or should I stay with the MLS type?
I don't think it has - he needs to take the head off to attend to a suspected damaged valve seatIt would be helpful to know first where the gasket failed.
See my earlier post. There are quite a large number of people who have fitted the SAIC gasket to an MG Rover/Powertrain built engine, and I haven't heard of many (or indeed, any) having issues further down the line.I would be interested in the N series gasket performance when fitted to a Powertrain built K.
One liner was out but was so little that I didn't have a feeler gauge thin enough to measure. The others were all .3T, I think the short one was .29999999. But the head is being removed this time due to the hanging valve. the gasket has not failed.OK, did you check the liner heights and evenness last time?
Julian, some good points, I understand what you mean about attitude and willingness to learn. I have one mechanic in the Brisbane QLD Australia area that I trust. He sorted out the mess the car was in when I got it with only 52,000Klms on the clock. The engine was out 2 teeth, exhaust and inlet manifold gaskets were for the 1300cc engine. there were signs on nuts and bolts that a multi grips tool had been used! Unfortunately my trusted mechanic has so much work at the moment that he can pick and choose what jobs to take. He doesn't like my job.It would be helpful to know first where the gasket failed. Of course, you will only know this once the head is removed. All the comments on liner height et al are valid. 5K Kms is not good but I am afraid that unless one has an experienced and careful mechanic, one never knows if the job is being done correctly or in a hamfisted way. Here there is one mechanic I know who has worked on 'K' series engines (mainly Landrover) for years (late 40's) and knows his stuff. If you have a young mechanic with no experience of the 'K' and is not willing to learn, then you are in for trouble whatever gasket is used!
In your instance, you do not have the problems one faces when relying on a garage. But you may not possess all the special tools required to measure liner heights, head surface et al. To do a proper job, you will need to invest in these tools (unless you already have done so).
I would be interested in the N series gasket performance when fitted to a Powertrain built K.
Best of luck. Tell us how you get on.