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Discussion Starter · #1 ·
Hello

My VW T5 130bhp engine ceased today. Recovery driver reckons the big ends have gone and may need to drill big holes in the crankshaft (?) and fits bigger gaskets.

Has anyone had to do this before? Any idea of the size of the job and what it should cost? Could something else be wrong instead?

Any thoughts / comments much appreciated. Also looking for an honest, reliable garage in/near Glasgow to carry the work out - any suggestions?

Thanks!!
 

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I think the important thing firstly is to find out why it has ceased. If it has been run low on oil, or the oil pump packed up, then your hole engine may only be fit for scrap.

Was it running hot just before seizure? it might be you have a water leak, causing the engine to over heat and grab a piston- you may be lucky- but IIRC these engines have aluminium heads, and they don't like over heating.

Either way, i can't see how drilling holes and fitting extra gaskets is going to sort this out- but i' be very interested if someone can prove me wrong.

Good luck with it!
 

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Discussion Starter · #3 ·
Not sure what caused this. Had the engine remapped about a month ago but no evidence that's the cause of it. What are people's views on ECU remaps and engine failures? Note the engine's done about 144k miles. Van is a 2006 model T5 130bhp

no oil level was fine. not running hot. RAC guy said didn't sound like cambelt issue either. Taken it to an engine specialist for diagnosis. Spoke to him to day and he said it was a mess. Will hopefully find out more tomo.

How much should I expect to pay for replacement/repair of big ends, reboring of crankshaft, new pistons and rings, etc?
Should I consider sourcing a recon engine instead? How much would that set me back for?

Any advice much appreciated. I fear this is going to be expensive...
 

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Discussion Starter · #7 ·
Thanks lunch crasher. Mechanic is still investigating but I don't think we'll ever know exactly what caused it. Probably unlucky as you say. Engine's done 144k miles so that might have played a role? Mechanic mentioned a foreign object but said that could have been a part of the injector or whichever part was the first to fail. He's now waiting to find out if he can have all parts supplied in which case he'd be able to rebuild it. I'm assuming rebuilding it will essentially mean the same as fitting a recon engine as are recon engines basically rebuilt ones anyway?

J-T5 - not sure if it matters who's done the remap but it was carried out by PowerTune Scotland in Motherwell.
 

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Rebuilding and reconditioning is one and the same thing indeed. I had an Alfa 2.4 jtd 156 blow a conrod out the block with 137k on the clock and I will never know what caused that. I know that there were tiny bits of cylinder everywhere. It could even have been water causing hydraulic lock, ie catastrophic head gasket failure. Personally given an option I would get a ready rebuilt engine as you will get some sort of warranty.
 

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hi,sorry to say i have had the same thing on T5 05 130bhp 136k miles,

i have gone down various routes to get it fixed at a worthwhile price and so far no joy. i hope you have more luck and would be interested to have another option. At the moment i am looking for a second hand engine but prices are way to high.
 

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Sorry to hear your mis-fortune, I however tend to find major engine blow-ups have the following in common;
1. Always occur on m-ways, never NEVER EVER on quite country lanes.
2. Always occur on high milers.
3. Always occur on 4 cylinder engines .... never seen a V8 blow etc !!

Now that's just my experience and my view is that you were recovered of the m-way / dual carriage way ??? Last vehicle I fetched back in was a Renault Master Diesel, 4 pots, M6, 168K ..... so you see my drift.

I have to assume that the big end bolts begin to stretch a wee bit over time and with the wear on the BE shells they begin to hammer the BE Cap and sooner or later the, at high speed the bolt stretch becomes too much and it yields ... result is piston, rod and crank see daylight and hit the tarmac .... and you look back to see your engine vomit out its innards!!

Anyway those bolts tend to be HT quality and just cheapo nasty production spec bolts ( with internal threads to rod) I find the big truck type big ends tend to be proper stud & nut affairs and a stud is generally made if better material and has less stresses within it during manufacture and machining. Bolts tend to be made from cold forged while studs usually made from large billet that is chopped up and threaded.

Anyway get a 6 speed box and dont wring its neck on mway next time !!:*
 

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I read the bit about RAC man saying it was not a cambelt issue meant that it was a 4 potter .. but yes the 5 pots are gear driven !!

Only other experience I have had is a valve head "falling off" ....... and it made a RIGHT ROYAL MESS! Most modern valves have a welded stem for ease of manufacture and economy during production but they can and occasionally do "fall off" with expensive results.
Anyway until thread owner comes back with findings, then we are clueless! But if its a non m-way failure then it looks like something was ingested ??? More info required !!:*
 

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Discussion Starter · #15 ·
I have now had a quote for the work of 3,600 plus VAT. this includes complete remanufacture of engine including reboring, pistons, new bearings, new gaskets, new flywheel kit, new clutch kit, new injectors.

Company that supplied the quote is Pistons & Components in Glasgow: http://www.pistoncomponents.co.uk/default.html

What should I do? Negotiate better price/warranty or look for a reconditioned engine elsewhere?
Somebody has recommended I'd look for a low mileage engine from a recovery vehicle? Any idea as to best place to source this?
 

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Hi Priory

What exactly happened to your engine? Did you also have it remapped? What quote did you get for rebuilding it?

Thanks
Hi i am near you in Glasgow, what i can say about piston components is that they are a firm of long standing long and would do a very professional job that are used by a lot of good garages, that said, i may know the very garage to look at your van and assess the situation if you want to pm me
 

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Discussion Starter · #18 ·
I have now had the engine re-manufactured by Pistons & Components in Glasgow. Work is completed (expensive!) and all they need to do is tune it and put it back into the van.

However, they claim the engine requires a specialist, unique tuning tool that is only for this engine and not for any other. Apparently my engine has different gears to need tuning or something. It costs £700 plus VAT and they don't want to buy it just for one job. He's asked around if he can borrow it off other garages including VW dealers etc, but no luck - nobody seems to have it and if they do they are keeping quiet about it.

I am completely stuck here. Not sure what to do or even if they are speaking the truth. Please help ! All I want is my van back, it's been 4 weeks already and summer is nearly over....

Can anyone confirm the story about the tool. What kind of tool is this? What should I do?
 

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Thanks lunch crasher. Mechanic is still investigating but I don't think we'll ever know exactly what caused it. Probably unlucky as you say. Engine's done 144k miles so that might have played a role? Mechanic mentioned a foreign object but said that could have been a part of the injector or whichever part was the first to fail. He's now waiting to find out if he can have all parts supplied in which case he'd be able to rebuild it. I'm assuming rebuilding it will essentially mean the same as fitting a recon engine as are recon engines basically rebuilt ones anyway?

J-T5 - not sure if it matters who's done the remap but it was carried out by PowerTune Scotland in Motherwell.
Only way a remap could have caused anything like an engine failure is if the timing was to far advanced but you really do need to advance a long way before it will make an engine fail.

Check the oil pump as I would suspect its down to this.

Regards
Martin
PendlePerformance
 

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Discussion Starter · #20 ·
the other thing I forgot to mention is that I put a full tank of petrol (£100) into the tank instead of diesel around the same time as the remap. drove 1.6miles before I realised and then had everything flushed through. I take it this could have been the cause?
 
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