I bought a new set of Maniflow LCB extractors, the pipe for the outer pair has a clamp on it that should go to a diff side cover bolt or something, but nothing lines up with it.

Before I make something new, does anyone know where it is meant to go??

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Yes there should be a bracket on the diff side cover held by two bolts. It's available from minispares or a simple 4 bends on a piece of strap steel.

Oops that's not the one I was originally thinking of. Try this one

You can twist or bend the supplied clamp strip a little to fit the bottom side cover bolt.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Cool, thanks, happy i wasn't missing an obvious mounting point.

Those 2 brackets you posted are the same i reckon, just flipped over

I'll sort something out

Thanks minimans & Kev

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did I tell you that I won a trophy?

When we fitted the maniflows I wondered the same thing as you Simon, and I put a slight twist in the bracket as described by Drmini.
A couple of months later we realised that the mystery bracket we had floating around and didn't recogmise was the missing link! The bracket we have is the same as pictured but painted black. It looks new old stock and is clearly unused, which added to the mystery.

It is still sitting on the bench I think, but the intention is to fit is at some stage.

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Using the bracket is a good idea if you can.. attaching the LCB to a single gearbox bolt will mean that it will take quite a beating. If you do use only the single mount, keep an eye on it

Cheers, Ian

I do think the bracket is a good idea... An engine we fitted to our moke had a strap welded to the (factory) downpipe using a single bolt. Said bolt had worked loose, completely stripped the thread in the diff housing, and worn away a fair chunk of the side plate...

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Sapphire Blue Deluxe spread across three parts cars, two sheds and a driveway...

I hear that... mine hadn't worn away the side cover, but I plugged, redrilled and helicoiled the thread in the diff housing a long time ago.

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did I tell you that I won a trophy?

I'm watching this discussion with interest as I'll be fitting the original Cooper S pressed-metal extractors to my car and I know they are vulnerable to damage due to the thin metal used and method of construction. From the factory there was no support at the bottom end but I reckon it will be worthwhile fabricating a bracket like you've described, otherwise any hit on the exhaust will potentially cause stress where the extractor down-pipes attach to the cylinder head. Attaching to two housing bolts sounds like a good idea.

The Sonic extractors I used back in 1970's had a flat strap welded to the bottom section just above the bend that aligned with one of the diff housing bolts.

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ex-NSW Police 1970 MK II Cooper S
VMCI #43

I thought the original Cooper pipes maybe attached to the remote extension housing? there is an angled tapped pad near the front, dunno what else it was for.
(back then I was a dirt poor apprentice, and couldn't afford a real 997 Cooper).... haha

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

No brackets from the extractors themselves, just the usual front and rear hangers for the exhaust system.

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ex-NSW Police 1970 MK II Cooper S
VMCI #43

I think Kev is onto it.
From memory my original Mk2 had a flat clamp around the engine pipe, clamping the pipe to the extractors and bolted at an angle onto the front of the gear change housing.

The original clamp for the manifold/tailpipe joint attaches to the remote housing via the clamp bolt that screws into the remote from the top.
It clamps the pipes together and screws into the remote at the same time.
It's a PIA to get to.

A bit more info.
1275 manifolds are 1/4" longer than 997/998/970/1071 manifolds as the 1275 block is 1/4" taller.

RonR

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68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

I bet it is!! no wonder they all ended up being cut

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did I tell you that I won a trophy?

I thought I could add some info here as I have a Maniflow LCB with a bracket onto the diff side cover.
In the dark I shoved the phone under the car a took a snap.
Bugger ther, the bolt has fallen out.
It's 5/16" but is it coarse or fine thread ?

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