Home > Technical (L322) > Exhaust manifold separation. |
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Phoenix Member Since: 16 May 2022 Location: Gone Posts: 1631 |
Are there any broken exhaust studs? Are you confident in their diagnosis? sounds more like a split inlet manifold to me - to prove either way, a smoke test will be the best way forward. The exhaust manifold can be changed in situ (assuming it's the causal part and not the gasket or the inlet manifold) but if there are any broken studs, these can be easier dealt with by taking the engine out (possibly they are pre-empting broken studs) which would cost more in labour as you've spent a lot of time taking the ex. manifold off 'in situ'.
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11th Oct 2023 2:43pm |
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Byg Nyge Member Since: 31 Dec 2022 Location: Newcastle Upon Tyne Posts: 31 |
Thanks for your reply, It's at the hands of the garage now, I took it in yesterday and had THE phone call from hell, engine out job. Literally just had a call from them, replaced 4 broken studs and the gaskets all good now - hopefully. Jeez, L322 ownership has it's moments! |
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11th Oct 2023 3:32pm |
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Phoenix Member Since: 16 May 2022 Location: Gone Posts: 1631 |
It's likely to be a broken stud(s) allowing a venturi to develop through/around the gasket, causing it to break up. The studs can and do break because the manifolds warp - did they check it? |
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11th Oct 2023 3:37pm |
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Byg Nyge Member Since: 31 Dec 2022 Location: Newcastle Upon Tyne Posts: 31 |
It was broken studs, 4 to be exact, 2 came out easily, 2 broke off so close that they had to be drilled out and re-tapped, head face checked and found good and flat, all new gaskets. Should be good to go. |
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11th Oct 2023 4:20pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2486 |
Were the matching studs on the other side also replaced even though they weren't broken? My brother had to remove the body of his 3.6 RRS a few months later to replace the matching studs on the other side. |
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11th Oct 2023 7:42pm |
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Byg Nyge Member Since: 31 Dec 2022 Location: Newcastle Upon Tyne Posts: 31 |
That's a good question, they had the engine out so I'm hoping they would have resolved all issues. |
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11th Oct 2023 11:43pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2486 |
I was surprised that my brother didn't replace all studs both sides when fixing the first lot. |
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12th Oct 2023 1:10am |
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Byg Nyge Member Since: 31 Dec 2022 Location: Newcastle Upon Tyne Posts: 31 |
Both sides were done and mating faces levelled, new gaskets on the manifolds and all pipework joints for want of a better description. |
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12th Oct 2023 5:13pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2486 |
Excellent! |
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12th Oct 2023 7:39pm |
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Phoenix Member Since: 16 May 2022 Location: Gone Posts: 1631 |
If the repairer did that without prompting, then they know their stuff and did you a favour (albeit one you paid for), well worth giving them your business IMO |
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12th Oct 2023 8:54pm |
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Byg Nyge Member Since: 31 Dec 2022 Location: Newcastle Upon Tyne Posts: 31 |
I found them by accident, we were looking for a new car and it was on route. Called in on spec. re. Engine Management Fault, local guys at a loss, these guys straight out with the diag found the fault, booked in and fixed within 2 days and they didn't charge for the diag session. Been going there ever since for all my L322 woes. |
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13th Oct 2023 12:14am |
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