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[JasonH]

How can I be certain that the sound I get under load is the passenger side exhaust manifold?

Can't see or hear any leaks when stationary, even when rev'ed hard. Can't see any evidence of a leak either.

I don't have the shield / insulation on the downpipe anymore - it fell apart. Would this make a similar sound to an exhaust leak - but only under load?

[Marks DTM Calib]

Without teh heatshield/insulation wrap, they are noisier, worth getting some exhaust wrap as a first step....

[JasonH]

Will do, not sure I'm up to changing the passenger side manifold gasket.

Had a go this weekend (without moving the engine) and rounded off a manifold nut. Mind you not moving the engine wasn't the cause - the nut/stud was seized. On the plus side at least it didn't shear.

If it is the manifold, and bearing in mind I have at least one seized stud, is it engine out or head off?

Head off - seems like a mamouth task with plenty of scope for error. Head bolts, angle torquing, camshafts off etc.

Engine out - no hoist and no air con emptying / refilling facilities

:-/

[cipher]

i was told by 2 garages (vx being one of them) that mine was a manifold, but it turned out to be a downpipe/manfold gasket.

less that £11, and now quiet.

Check this first, just feel up around the joinj and you feel it blowing, then may be worth changing.

[JasonH]

I was wondering what the outcome of your leak was - it seems you were most fortunate 8-)

I've had a feel round there - but can't find anything - b*gger!

[markey mark]

jason it will most def your manifold to head gasket leaking bud !! dont have to take head off or take engine out just take your time and move as much stuff out the way as you can !!   you wont be able to feel anything because of all the heat sheids and it gets too hot too quickly to get your hand under it hth mark !!  

[JasonH]

I had a bloody good go at the weekend. The problem is the seized stud is the one nearest the ABS modulator. The nut has rounded off. There's no room to hammer a socket on and I suspect the stud will shear before the nut or stud comes out. If it does and it's flush with the head I'm scuppered. The car won't be drivable and the engine will need to come out to drill the stud out.

BTW this forum software does strange things with some of the words I'm using......

[markey mark]

oh bug.ger  :-?  you need to get that nut or stud out first   when i did mine all the studs came out of the head wich makes it easier to get manifold out some were really yight but none did shear   just remember they in alloy will strip threads before it snaps stud   hth mark