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Discussion Starter #1
It's service time for my GTV, and I'm wondering whether it's time for a cambelt change too. I've a receipt from when it was last done, Jan '09, which includes the belt, rollers, and tensioner. It's done less than 15,000 miles since then.

I've seen anywhere from 3 - 5 years recommended as a safe interval for the belt - what's the consensus around here? Ned at Autolusso told me it's often the tensioner that starts to fail, and showed me how to pry back the cover and make sure the belt isn't starting to creep sideways on the pulleys due to slack (which it isn't).

The only thing it looks like they didn't do last time was replace the water pump for one with metal impellers - not sure when these tend to start failing. Car's about 8 years old, on about 43,000 miles.

I'm leaning toward leaving it forcanother 12 months, but please let me know if you think that's unwise. :)

Cheers! :thumbs:

(edit: excuse the awesome grammar in the thread topic :lol:)
 

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had mine done on the 4th year and it was also 15000 miles i had a plastic waterpump ( should have been metal it is said ) and it was showing signs of ware and was not working at full eficiency


recomendation i belive is 5 yrs by Alfa so thats why i did mine 1 year early my crazy logic
 

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40k or four years for a v6 Id say
 

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Because a lot of them fail prematurely (or a tensioner fails)
What a shame as they are a cracking looking engine but I guess it wouldnt be an Alfa if it was bullet proof :lol: funny that no one has come up with a better belt and tensioner kit after all these years.
 

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It was from Alfa 5 or 72k, this has been found to be to long. the general excepted rule for the V6 is 4 and 48K.
If it is a 3.0 it should have a metal impela already, however it may of been swaped to a plastic one on a previous service! remember if the belt snaps then you will likly be scrapping the car.

Another point is are there any other V6's out there athat produce the same bhp with as few problems?
If that MG 2.5 KV6 based on the K series at all do you not have all the lovly K based head and stud issues ?
 

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If that MG 2.5 KV6 based on the K series at all do you not have all the lovly K based head and stud issues ?
Nope not at all matey. The KV6 is a bullet proof V6 I'm afraid and the only weak spot on the engine is the inlet manifold which can suffer from broken hangers or VIS failure. HG failure on a KV6 is like rocking horse poo and it may not produce the same horses but you have to remember when fitted to a ZS it was one of the lightest cars in its class. Tiff did himself say it was also one of the best front wheel drive cars he had ever driven.

Sorry this wasnt a KV6 vs Alfa V6 as I already know that the Alfa V6 engine looks better and sounds slightly better but more to why a strong V6 engine needs such maintenance.
 

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The man I trust to look after my pride and joy assures me 5 years; so it'll be getting done when she goes back on the road Easter (ish) time.
 

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Discussion Starter #13
Thanks for the opinions, chaps. Sounds like I should get one more year out of it, then.

I had a twinspark 156 before this, so got used to being paranoid and changing it every three.
 

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Nope not at all matey. The KV6 is a bullet proof V6 I'm afraid and the only weak spot on the engine is the inlet manifold which can suffer from broken hangers or VIS failure. HG failure on a KV6 is like rocking horse poo and it may not produce the same horses but you have to remember when fitted to a ZS it was one of the lightest cars in its class. Tiff did himself say it was also one of the best front wheel drive cars he had ever driven.

Sorry this wasnt a KV6 vs Alfa V6 as I already know that the Alfa V6 engine looks better and sounds slightly better but more to why a strong V6 engine needs such maintenance.
The KV6 in the Rover 800 certainly wasn't bullet proof.

A mate of mines dad had one, it let go 15000 miles from new.

I also hear the KV6 belts are a nightmare to change, as there are 3 of them.


The 24V version of the Alfa V6 was a bit of an afterthough upgrade to the 12v, as such there isn't much of a contact radius between the belt and 2 of the cam pulleys. This makes the belt more likely to slip than on some other V6's.

Compared to the TS though cambelt issues are pretty rare.
 

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In my opinion the 24v have better coverage on the cam gears than the 12v.

The main problem with the 24v are that a lot of people do not tension the belt properly.
With the tension a bit low the tesioner pivot pin will wear resulting in the roller turning sideways ever so slightly allowing the belt to run off to the side.
What I would suggest is remove the top cover and make sure that the belt is perfectly tensioned.
If it is not tensioned properly, retention and drive happily.

A dead giveaway of a badly tensioned belt is a knocking sound especially audible on cold start.
 

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40k or four years for a v6 Id say
tbh cos ive always had v6 since the early days the 12 valve had a bad habit of belt slipping a toothrather than snapping because of how it ran round the right hand cam pulley and also that combined with a notorious de tensioner
However the 24 valve belt has a better fit so i reckon 40k is a bit premature but old habits die hard
the twin cam belt driven alfas DONT LAST 72K change them at 40-50k
 

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The KV6 in the Rover 800 certainly wasn't bullet proof
Indeed it wasnt, it was rubbish. But Rover never stopped working on it and in its last revision found in the MG Zed's its bullet proof.

I also hear the KV6 belts are a nightmare to change, as there are 3 of them.
Indeed they are, but a proper specialist can change them in 4 hours for £500 so I wouldnt say a nightmare just a lack of knowledge from your local mechanic. This is the same time and price for a TS so no nightmare.
 

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Good question!

my cambelt was replaced in May 2008 28k miles and previous owner was an engineer on a yacht apparently so presumably knew a thing or two about engines the change was at 4 years 10 months (5 years really) garage assures me metal water pump would have been replaced too if needed, but not itemisation for water pump on the invoice :confused:

4 years comes round May 2012 so getting quotes - anything from 400 to 845 for premium it's the extras that start to add up e.g. water pump spark plugs etc not sure whether to get it done this year or next probably better safe than sorry

does water pump need doing again too?

anyone know if idler pulleys and idlers are the same thing?? :confused:
 

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You'll see from my previous threads that my very first experience of owning a V6 GTV began in somewhat fraught circumstances! The belt was 42k and 5 years old at the time but the lowest interval I've seen in 4yrs/48k so yours should be good for another year.

As for the KV6, I haven't driven a ZS, however, the 800 I drove with it in was lumpen and slow. The Honda derived 2.7 version however, was a very nice engine, apart from the HLA issues (not massively powerful, either, though).
 
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