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jonsnapart
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big end shells

I have a fourteen year old gtv twinnie with 85000 on the clock.. engines as sweet as a nut..compressions up and even..doesn't burn oil.. seen 130 on the clock.. doing a bit of restoration on it.. anyway I've seen some specialists recommend renewing the big end shells to aid longevity..this kind of goes against the grain with me as I'm an old school engine tuner and would not ordinarily re-shell without a regrind..
comments and opinions please gentlemen..

Last edited by jonsnapart; 29-07-10 at 22:16.
 
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If aint broke don't fix it...Only time you need to change in my opinion is if you snap a cam belt, overheat the engine and blow a gasket or they fail...
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I would leave it as well. The shells and big ends will do 150k plus if they are not subjected to any trauma such as running low on oil or the cambelt snapping.
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If aint broke don't fix it...Only time you need to change in my opinion is if you snap a cam belt, overheat the engine and blow a gasket or they fail...
Good thats what I want to hear...it aint broke so I'm not gonna fix it..thanks
 
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A 14yr old GTV 2.0 would have the CF1 engine - these are much sturdier than the later Twinsparks found in the 147 & 156 and they just go on and on. A customer of ours has one with 201,000 on the clock, or at least it did have when I last saw it.
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A 14yr old GTV 2.0 would have the CF1 engine - these are much sturdier than the later Twinsparks found in the 147 & 156 and they just go on and on. A customer of ours has one with 201,000 on the clock, or at least it did have when I last saw it.
As long as you keep the oil topped up. Mine was great until I forgot to check the oil in the run-up to me moving house at the beginning of this year.

christmas time someone came a-knocking and it wasn't a fat guy in a red suit.

I changed the engine after I had moved, and one of the shells on piston 2 had turned, and was basically welded to the other shell, and lots of little silver bits were all over my engine
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jonsnapart
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Yep its a CF1.. I'm an obsessive oil level checker/changer.. castrol edge sport.. every 5000..(former aeroplane mechanic).. an engine siezure could seriously f*** up someones conservatory roof.. I've always used castrol ?? did you know that the name 'Castrol' comes from 'Castor oil' (bit of worthless trivia there)

Last edited by jonsnapart; 31-07-10 at 07:06.
 
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an engine siezure could seriously f*** up someones conservatory roof..


By the way, isn't Edge Sport a 10W60 oil? That'll be great for oil pressure on the bottom end when hot, perhaps not so good for keeping the top end lubed?
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Dunno mate.. I'm getting on a bit now.. I grew up on castrol gtx and my grandad said that multigrade wasn't 'propper' oil..
my owners book says 10W 60 for sporty driving.. I see what you mean though.. thicker when hot.. higher pessure and the pump can shift it more easily versus lower flow rate..

glad you liked the joke.. nothing like coming home to find a hot and steaming 24 litre V12 in the dog basket.

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I would use a 5w-40 fully synthetic.

There isn't a lot of point going for a thick oil like a 10w-60 for road use in the UK unless your car burns lots of oil.

It simply won't get upto its correct operating temperature in normal use.
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I would use a 5w-40 fully synthetic.

There isn't a lot of point going for a thick oil like a 10w-60 for road use in the UK unless your car burns lots of oil.

It simply won't get upto its correct operating temperature in normal use.
There's a guy up the road from me who uses us for parts, more into Lancias than Alfas really but replaced his Thema with a 166 2.0.. He told me he's done over 100k in it personally and always used the same Selenia HPX he used in the Thema, which is a 20W50!
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Ok thanks.. I'll give it a try... only recently into alfas.. I'll try the 5 40 .. tell you the truth I'd never heard of selenia before I got into this malarky.. then I started reading these forums and the concensus of opinion seems to be ..best thing since sliced bread ...or... wouldn't put it in my lawn mower..
 
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Selenia is ok, but no better than any other Brand IMO.

You certainly don't want to be leaving it in the engine for the 12k miles that Alfa say it is ok for..

Have a look on the Opie oils website, you can get a 10% discount with them if you register on their site. They often do free carriage deals and other offers too if you are a member.
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oh no no..always been a 5000 - 6000 oil changer.. I can't for the life of me understand why people spend a small fortune on a car and then resent changing the oil twice a year.. And even then they try to save a tenner by putting 'tescos own brand' or something like that in.. Madness!!
 
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oh no no..always been a 5000 - 6000 oil changer.. I can't for the life of me understand why people spend a small fortune on a car and then resent changing the oil twice a year.. And even then they try to save a tenner by putting 'tescos own brand' or something like that in.. Madness!!
Totally agree. I change the oil once a year or every 6000 miles, as thats about my annual mileage.

I have a feeling that the long service intervals specified by Alfa help increase the incidence of Cam wear and bearing failures on these engines.
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