OK guys my cambelt has frayed  ot snapped and potentially slipped one or more teeth.  My question what damage can expect to have happened to the engine.

 

How likley is that the engine just needs a top end rebuild 

 

Or am I realistically looking at a full rebuild.

 

Anyone know of a  good builder West Yorkshire

 

Are you sure your engine has a belt, not chain - what is your engine code?

Depending on the circumstances when the chain or belt let go, you most likely will get away with a top end rebuild provided the piston tops have not been too badly damaged.  

14 minutes ago, Warrior193 said:

Depending on the circumstances when the chain or belt let go, you most likely will get away with a top end rebuild provided the piston tops have not been too badly damaged. 

If there are any marks on the piston(s), there could be hotspots which may cause piston failure.

A case of you pays your money and takes yer chances.

It took a fair bit of searching - but the information I found suggests that the 2017 vRS 230 has a cam chain, not belt.

4 hours ago, dhandley said:

OK guys my cambelt has frayed  ot snapped and potentially slipped one or more teeth. 

 

Let me guess, you are repeating what a mechanic has told you?

Got any photos for us?

I too am intrigued to see what belt has frayed and jumped a tooth?

 

Seen as the 2.0 petrol vrs engine is chain driven as far as I’m aware.

@dhandley   It would have been an idea to say if it was a TSI or TDI vRS !

1 hour ago, Ootohere said:

@dhandley   It would have been an idea to say if it was a TSI or TDI vRS !

The TSI definitely has a chain...

@PetrolDave I know.  But for anyone just clicking on the thread, maybe not even members of this forum it is nice to know what engines someone is posting about.

If it's a vrs230 as a responder investigation indicates the main timing chains and balance shafts and oil pump are all chains. The only belt AFAIK is the waterpump drive.

 

The gen 3 is far improved but not totally immune from timing chain stretch and very rarely compared to gen 2, tensioner failure can happen.  Usually they warn by way of a correlation fault first and still run and there is no damage. If the engine has stopped and let go all of a sudden that is another matter. It does sound like the mechanic investigating and advising the op is either being misinterpreted or is not familiar with the engine and has not got very far into proper diagnosis.

Edited 1 May, 20242 yr by TheClient

9 hours ago, J.R. said:

 

Let me guess, you are repeating what a mechanic has told you?

 

Repeating what .mechanic said and the.photo of a frayed belt still on the engine.  It's a diesel as well not petrol and tbh I have no idea re the.ttpe of e gine its a skpda octavoa vrs 2017 diesel automatic

Simple enough.  You have a Euro 6 emission 2.0 TDI.

Up until last June / July the service advice / recommendations / guidelines in the UK were to change the cam belt at 5 years / 50,000 miles.

Cambelt and Water Pump,

 

Apparently now that has been changed. 

Everyone seems to assume that 1.2, 1.4 TDI, 1.6 TDI & 2.0 TDI are as this sent out.    They might be, they might not, i do not know. 

 

PS.

OT,

but the DQ250 DSG has a Service Schedule for Oil & Filter changes at 40,000 miles. 

 

Cam Belt Guidance change (1).pdf

Edited 1 May, 20242 yr by Ootohere

10 hours ago, Warrior193 said:

It took a fair bit of searching - but the information I found suggests that the 2017 vRS 230 has a cam chain, not belt.

 

A vRS 230 is a 2.0 TSI (Petrol) 

Is that for the diesel engine which mine is ?

Mine is diesel.  It drove home from York to Huddersfield as initially it sounded very noisy top end and a blowing exhaust when the engine ran.  It got.ipto speed 80mph and went fine no noise good acceleration all seemed ok

 Until 5 miles from home when I slowed / stopped for traffic. After that it still limped home and to garage the following morning.

On 01/05/2024 at 09:17, dhandley said:

Mine is diesel.  It drove home from York to Huddersfield as initially it sounded very noisy top end and a blowing exhaust when the engine ran.  It got.ipto speed 80mph and went fine no noise good acceleration all seemed ok

 Until 5 miles from home when I slowed / stopped for traffic. After that it still limped home and to garage the following morning.

I'm not very experienced with the modern CR diesels but I have changed belts on old TDis.  At least we have more confidence in what your mechanic is saying. If the belt is damaged but still intact as the car was still running hopefully it will be ok. But for it to be running badly it does sound like the timing had moved. So your mechanic needs to go through the diagnostic process.  No body can really guess on here any better than you can. Rgds