Thread: New D2 issue

Hmmm...
Warped manifold normally tend to be more of a squeal than a whistle but anythings possible.
It just means that exhaust gas is getting out between the head and the manifold itself, instead of all of it going out the exhaust pipe.
Honestly? It probably won't do anything if you keep using it short-term but don't leave it for yonks.
Costs? I'd estimate $600 ish, unless you do it yourself. Lots of people say to cut the webbing out of it, others say use larger studs. Your choice.
As for the noise level, they're not a quiet engine but they're not that bad, are you still running the acoustic covers on the engine? Perhaps freshen up the engine/transmission mounts.
Other than that, enjoy

Originally Posted by Disco Muppet

Hmmm...
Warped manifold normally tend to be more of a squeal than a whistle but anythings possible.
It just means that exhaust gas is getting out between the head and the manifold itself, instead of all of it going out the exhaust pipe.
Honestly? It probably won't do anything if you keep using it short-term but don't leave it for yonks.
Costs? I'd estimate $600 ish, unless you do it yourself. Lots of people say to cut the webbing out of it, others say use larger studs. Your choice.
As for the noise level, they're not a quiet engine but they're not that bad, are you still running the acoustic covers on the engine? Perhaps freshen up the engine/transmission mounts.
Other than that, enjoy

My old Defer i cut the webbing out using a die grinder drilled all the manifold bolt holes slightly larger except the 2 centre holes , That motor as far as i know is well over 200,000 km/s with out issues that i know of

My guess is manifold stud pulled or broken.Drove mine for months before getting fixed.Very common.

For your 2003 model, I believe this to be essential, go to "shop", at the top of the page. Not sure about the engine noise, have a look under, does your D2 have the large centre muffler fitted? Some have been removed for better exhaust flow , makes them a bit noisier, Bob
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On my d2,td5 at about 260k on a routine inspection I found 2 loose nuts on the exhaust manifold.Tried to tighten them and the studs broke.(Were probably already broken).I removed the manifold and got it skimmed by lokal engine-rebuilding shop ($100).The broken studs came out quit easy by pilot-drilling and eazy out. I made a little jig to get the pilot holes in the centre.Fitted with all new genuine studs and gasket, all good.To my surprise there was very little sign of black around the manifold.
Heichen

Originally Posted by heichen

On my d2,td5 at about 260k on a routine inspection I found 2 loose nuts on the exhaust manifold.Tried to tighten them and the studs broke.(Were probably already broken).I removed the manifold and got it skimmed by lokal engine-rebuilding shop ($100).The broken studs came out quit easy by pilot-drilling and eazy out. I made a little jig to get the pilot holes in the centre.Fitted with all new genuine studs and gasket, all good.To my surprise there was very little sign of black around the manifold.
Heichen

One thing about manifold studs, they must be tensioned to the correct amount, otherwise they break easy. Always use a tension wrench. Bob

Thanks...
I'll check on the engine mounts, cover is in place so I reckon I'm paranoid about the engine noise as I'm almost trying to find problems - since picking up on the whistling sound. And just being fairly new to driving the D2 from a smaller petrol engine car.

As for the centre muffler - I don't know. I'll check it out once I get back home.

Glad the work can wait a little while, -$600 isn't the kind of Christmas present I was hoping to give myself!

Thanks again for the responses.
Mike

I'm taking it that thus means the centre muffler has been taken out which could mean slightly louder.