Whilst having some other servicing done (ARC bushes and front lower arms) I asked my independent specialist to have another look at the source of a whistle on acceleration that has been there for the last 10k miles or so. Now getting a bit louder. (It's not the upper boost pipes).

Previously the guys thought it was a lower boost pipe leak, which is bad enough since that means body off to fix apparently.

Now they aren't sure but think it might be the known issue that afflicts TDV8s of a warped N/S exhaust manifold allowing exhaust gas to escape at the mating surface of manifold and cylinder head; probably due to a broken stud.

(BTW I had previously suggested this but the possibility was dismissed the first time around).

It was also noticed that one of the bolts holding turbo to exhaust is not fully home but it won't move and there's no sooty deposits so may not be leaking.

It looks as if the body is going to have to come off whichever of these possibilities is the problem.

I'm worried that if there is a broken stud, then removing it unless done properly might cause a bigger problem requiring cylinder head removal.

So ..... anyone know the best way to handle it? Any new wizzo techniques?

I've heard of using left handed drill bits to encourage the little b*****d to come out, and similarly using a left handed tap wound into it. I've had some experience before and know that those tapered extractors are useless. Never tried the 'Easy Outs' that Snap-on supply but some say they are good.

Drilling centrally and straight is usually the biggest problem. What's the access to the manifold like once the body is off? Easy or restricted? 2008 MY Java Black TDV8 HSE

Interested in this one. My TDV8 has started to whistle on acceleration and I'm told that the turbo bracket on the NS turbo is missing! I'm wondering if there's a leak like yours. I didn't know that this leaking was a known issue on the TDV8 though (missing bracket notwithstanding).

.  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

RRSTDV8 - you may well have the same issue. Forum contributor 'Bob.' kindly supplied the text of the relevant TSB in a previous post:

http://www.rrsport.co.uk/forum/post391360.html

Of course it may not be the exhaust manifold leaking but the evidence is strong.

Having just spent some serious money on the transmission fix and the suspension arms etc, it is a bit gutting to be facing another big bill quite so soon but think it has to be done. Perhaps my independent would do us a deal for both vehicles? 2008 MY Java Black TDV8 HSE

Mine has started making a whining/whistling type noise but it's only once the road speed increases. Hard acceleration at low speed doesn't cause the noise until about 40-50mph. Above that, it happens when throttle is applied. The noise doesn't change in tone with revs / road speed. Sitting in neutral on the drive and giving the throttle a good push doesn't cause the noise but maybe that's because there is no load on the engine.

I'm chasing my indie to get them to have a look at the missing bracket issue. I fear a body off in which case I might suggest the manifolds are changed. Actually, just quickly looking for prices of these, RimmerBros have them at £600 each +VAT! F**king Eek! That's looking like a £2.5k+ bill to replace them both...  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

I have succefully had manifolds skimmed in the past

Most annoyingly, the TDV8 FFRR manifolds are only £60 each

RRSTDV8 wrote:

Mine has started making a whining/whistling type noise but it's only once the road speed increases. Hard acceleration at low speed doesn't cause the noise until about 40-50mph. Above that, it happens when throttle is applied. The noise doesn't change in tone with revs / road speed. Sitting in neutral on the drive and giving the throttle a good push doesn't cause the noise but maybe that's because there is no load on the engine.

Disco-Mikey wrote:

Most annoyingly, the TDV8 FFRR manifolds are only £60 each

Yes that is the worst example of JLR's predatory pricing I've ever seen. Disgusting. 2008 MY Java Black TDV8 HSE

Dropped in at the workshop today to see how things were going and was presented with this:

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A (relatively) good outcome by the sounds of it. Hopefully it will result in a long and quiet life for the turbos from now on.  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Pleased to report she's back. Ran sweetly on the 12 mile trip home from the workshop. Considering all the work involved to fix the lower boost pipe assembly, sort out the dodgy downpipe connection, replace the four front to rear brake pipes, replace the upper boost pipes and finally rid me of the useless POS metal sump on the gearbox a very fair price.

Just in case you missed that....... the metal sump conversion is a complete waste of time and I recommend you never do it as the useless thing will leak like a sieve.

So nice to plant the right foot now and not hear the sound of air leaking past on the induction side. May be my imagination but it feels a bit more sprightly on the pick up.

It is good to take the car to a place where they appreciate it if you understand what's involved and give them credit for doing a good job even if they do gently rib you for being a bit fussy. "We didn't think you'd want us to wash it". (Correct!) 2008 MY Java Black TDV8 HSE

Quote:

Just in case you missed that....... the metal sump conversion is a complete waste of time and I recommend you never do it as the useless thing will leak like a sieve.