[928uk] 928S4 Left Exhaust Manifold Split

[Ben Hodges]

:-)

Yeah I think that why I went with the copper flashed steel ones!

No one needs an expanding nuts problem!

On Tue, 2 Aug 2022 at 20:19, Paul Lacey <t595 at btinternet.com> wrote:

> Hi,
>
> I’ve not seen your nuts, nor do I wish to J
>
> My concern with changing material would be the constant heat cycling these
> particular nuts endure. Brass and steel having different expansion rates
> I’d be worried they might undo. Probably an unwarranted worry but we don’t
> want jangling nuts do we !?
>
>
>
> Paul L
>
> P.S. yes those 6 damn bolts on the flanges are a particular hate of mine
> !! There are two which are a complete nightmare to cut off when they rust
> to lumps as they all do.
>
>
>
> *From:* Ben Hodges [mailto:benhodges1975 at gmail.com]
> *Sent:* 02 August 2022 18:13
> *To:* Paul Lacey
> *Cc:* 928 Org; Stuart
> *Subject:* Re: [928uk] 928S4 Left Exhaust Manifold Split
>
>
>
> Are you dissing my nuts Mr Lacey? 😂
>
>
>
> Correction - just checked and I used copper flashed lock nuts for the
> manifolds to engine. I used brass on the manifold to y pipe as those
> buggers were completed rusted/seized.
>
>
>
> But as Paul said the Porsche ones are prob the best option - they go
> crusty but don’t seem to seize.
>
>
>
> Cheers
>
> Ben
>
>
>
> On Tue, 2 Aug 2022 at 18:41, Paul Lacey via 928uk <928uk at lists.928.org.uk>
> wrote:
>
> Hi Stuart,
> Late into this conversation but I'll chip in anyway.
> I'll be very surprised if you have any studs wanting to shear. In my
> experience these nuts always come undone pretty easily but sometimes bring
> the stud with them, as others have said.
> The washers are special, and very thick, don't lose them.
> Most nuts will be accessible with a 13mm 3/8" drive socket on a short
> extension (preferably a wobble extension). If you can't get socket on then
> use a ring spanner.
> You definitely should drop the alternator, and if you hang it / prop it
> then you can leave the wiring attached.
> (In my view) the wadding cannot have come up from the front silencer. I
> can't see any way that could happen. Someone has mentioned, and I agree
> 100%, it's wadding from the engine mount heat shield, an item that always
> falls to bits and is right where your manifold split is located.
>
> P.S. The nuts are lock nuts and have a metal split lock washer built into
> the top of them. They are not just "ordinary nuts". Personally I'd reuse
> them or new ones. Not sure I'd go with brass myself.
>
> Best of luck with it,
> Paul Lacey
>
> -----Original Message-----
> From: Stuart [mailto:stuart.hendry2 at gmail.com]
> Sent: 02 August 2022 13:27
> To: 928 Org
> Subject: Re: [928uk] 928S4 Left Exhaust Manifold Split
>
> You’ve given me some hope after all !
>  I’ve had a look at the manifold nuts yesterday and they are rusty as are
> the exposed stud ends but the washers still look in reasonable shape and
> not too rusty considering 35 years
> Looks like studs are still available if need be.
> Should copper grease be used on assembly or brass lock nuts better?
>
> Richard - I’ll be in touch.
>
>
>
> Stuart
>
>