How reliable is the turbo on the 1.7 diesel model?

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MULLEY
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How reliable is the turbo on the 1.7 diesel model?

Post by MULLEY » Mon Oct 16, 2006 9:11 pm

Anyone got any ideas on how long they last, how can u tell if its not working to full capacity.

Are there any ways to make sure the turbo doesnt get damaged, i know on petrol turbo cars, you should let them idle for a minute or 2 before switching the engine off, is this the same for the 1.7 td?

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Post by jeremy » Mon Oct 16, 2006 9:23 pm

XUD turbos are exceptionally reliable - and bearing and seal failure is virtually unknown. Look at the for sale/wanted column - no one wants the things!

To check its working - you need a boost gauge which is a nice toy on your dashboard anyway as it will move as the boost builds up. Easy to fit - a 'T' off the extra fuel device piping from the intercooler.

Usually the only problem can be the wastegate sticking.

In fact its quite difficult to pull up without the engine having idled or run slowly for a couple of minutes. I make a point of shutting windows etc before turning off the engine as a habit.

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Re: How reliable is the turbo on the 1.7 diesel model?

Post by Terry Brooks » Mon Oct 16, 2006 9:28 pm

MULLEY wrote: is this the same for the 1.7 td?
Yep ......sez so in t' drivers instruction book ......cant remember how long for though......
Dunno how long they're s'posed to last ........my tizzydee's done 153,000 and still going strong ........a "bloke who knows more about 'em than me" commented about 1000m ago that it was "one of the sweetest 1.7's he'd heard for a while".
How can you tell if its working to full capacity? ............Presumably if it'll rev to the red line [OK :shock: red marks then :P ] on the tacho or do 110+mph.
Change the oil regular ........I change mine every 3000 and the filter every 6000.
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tim leech

Post by tim leech » Mon Oct 16, 2006 10:30 pm

The one i have has 95k on it and pulls like a train, will leave my 1.6 beetle for dead!

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Post by MULLEY » Mon Oct 16, 2006 11:15 pm

So there would be no point in buying a spare turbo?

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Post by docchevron » Tue Oct 17, 2006 1:30 am

Very little mate. The Garret and KKK turbo's are really well made and unless you turn the wick right up and abuse the hell out of them they last at least as long as the engine.
As with all things, regular oil changes with good quality oil helps.

Idling the engine is an absolute must before switching off to avoid oil starvation to the turbine. 30 seconds should be ample unless you've just pulled up from full throttle / boost situations (which doesn't tend to happen unless you drive like me!).

Equally, I always let the engine idle for a few moments before pulling away and I never work a cold engine hard, always best to let the lump warm up gently before working it hard.

If you are unlucky enough for the turbo to fail when on boost then the head would probably have to come off.....

Some I'm aware of failing have sounded bl**dy awful for a while before exploding while others just "let go".

On the whole though, it's much more likely the head gasket will give up than blow a turbo, they really are very well made so save your money!

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Post by BX Bandit » Tue Oct 17, 2006 8:37 am

If it helps, my turbo has done 195K and the car pulls very well. I have a spare turbo of which I don't know the history but if anyone gets stuck for one then hopefully it will get another td back to full glory.

The rubber diaghram that controls the extra fuel needed during turbo boost failed on my Rotodiesel pump about 3 years ago and it took me a year to get round to fitting a replacement pump. The car was sloooow and struggled up hills but I got around ok.

Does anyone know if the lack of extra fuel during boost is the same as having no turbo at all?
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Post by jeremy » Tue Oct 17, 2006 9:22 am

Yes - to get any benefit from the turbo you must have the extra fuel. Without it you have a low compression 1.7 - ie about 55BHP pulling a gearbox which is far too long-legged for it. There might be a marginal increase due to higher compression when the turbo is running.

We have a 1.7TD Estate and a ZX 1.9D - and what is noticeable is how much beter the ZX moves off and really surprisingly how much better it is on really steep slow hills. Of course get the turbo running and the BX reaaly goes but if for example you have to slow right down for really tight corners the BX is not very happy - but the ZX is.

Incidentally they both have the same tyre size and first and second gears are the same.

The easy way to feel what its like is just to disconnect the pipe from the intercooler to the pump!

tim leech

Post by tim leech » Tue Oct 17, 2006 10:23 am

Ive just changed the oil mulley and used vw approved castrol turbo diesel oil and a decent filter.

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Post by MULLEY » Tue Oct 17, 2006 9:07 pm

Hi Tim, the car is sounding good (i might be getting a teensey wee bit excited at prospect of diesel ownership).

Thanks for all the help on this one guys, the only reason for asking is possible impending ownership of Tim's TZD & i saw the following on ebay & thought that looks cheap, might be useful as a spare, however sounds like i would be wasting cash, so anyone else interested?

http://cgi.ebay.co.uk/Turbocharger-Luca ... dZViewItem

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Post by docchevron » Tue Oct 17, 2006 9:40 pm

I noticed that but immediatley decided against.
It looks right but the photo is a gallery file not the turbo for sale and I dont recall Lucas making Turbo's for XUD's, I'm pretty sure that would be a recon unit of the KKK variey if it's in a Lucas box.....?

Either way, The Garret is the better turbo but they really do last forever so save your pennies mate. Invest it in beer instead!!! Much as I do! Cheers!

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Post by MULLEY » Wed Oct 18, 2006 7:18 pm

Ok, i am persuaded not to buy turbo, so will spend on wifey's birthday rather than beer, although i could change my mind......

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Post by Stewart (oily!) » Wed Oct 18, 2006 7:36 pm

Wise move, every scrapyard engine whether it died from head gasket, cambelt breakage or whatever generally has a serviceable turbo bolted to the back, I have two or three in my garage should anyone need a replacement (mind you it makes an inteesting afternoon swapping one in situ)
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Post by docchevron » Wed Oct 18, 2006 8:00 pm

MULLEY wrote:Ok, i am persuaded not to buy turbo, so will spend on wifey's birthday rather than beer, although i could change my mind......
BEER BEER BEER BEER BEER BEER BEER ~ale~ ~ale~ ^^ ^^ ^^bx>

Cheers
Chris G
Smokes lots, because enough's enough already!

Far too many BX's, a bus, an ambulance a few trucks, not enough time and never enough cash...