ausmini :: View topic - Maniflow extractors, bottom mount

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.

Attachment:

FAM1234EVA.jpg

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

Attachment:

bracket2.jpg

Said bolt had worked loose, completely stripped the thread in the diff housing, and worn away a fair chunk of the side plate...

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.

screws into the remote from the top

....

It's a PIA to get to.

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...

Author:	simon k [ Mon May 08, 2017 10:50 pm ]
Post subject:	Maniflow extractors, bottom mount
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??

Author:	minimans [ Tue May 09, 2017 4:14 am ]
Post subject:	Re: Maniflow extractors, bottom mount
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. Attachment: FAM1234EVA.jpg Oops that's not the one I was originally thinking of. Try this one Attachment: bracket2.jpg

Author:	drmini in aust [ Tue May 09, 2017 6:52 am ]
Post subject:	Re: Maniflow extractors, bottom mount
You can twist or bend the supplied clamp strip a little to fit the bottom side cover bolt.

Author:	simon k [ Tue May 09, 2017 8:00 am ]
Post subject:	Re: Maniflow extractors, bottom mount
minimans wrote: 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. Attachment: FAM1234EVA.jpg Oops that's not the one I was originally thinking of. Try this one Attachment: bracket2.jpg 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

Author:	Tim I [ Wed May 10, 2017 11:15 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
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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Maniflow extractors, bottom mount https://ausmini.com/forums/viewtopic.php?f=2&t=95356	Page 1 of 2

Author:	1071 S [ Thu May 11, 2017 11:30 am ]
Post subject:	Re: Maniflow extractors, bottom mount
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

Author:	Matt I [ Thu May 11, 2017 12:00 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
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...

Author:	simon k [ Thu May 11, 2017 12:20 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
Matt I wrote: Said bolt had worked loose, completely stripped the thread in the diff housing, and worn away a fair chunk of the side plate... 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.

Author:	winabbey [ Thu May 11, 2017 1:00 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
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.

Author:	drmini in aust [ Thu May 11, 2017 1:48 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
winabbey wrote: 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. 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

Author:	winabbey [ Thu May 11, 2017 2:20 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
No brackets from the extractors themselves, just the usual front and rear hangers for the exhaust system. Attachment: GCoates s-l500 4.jpg

Author:	IndigoBlueCooperS [ Thu May 11, 2017 7:59 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
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.

Author:	miniron [ Thu May 11, 2017 10:50 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
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

Author:	simon k [ Fri May 12, 2017 12:02 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
miniron wrote: screws into the remote from the top .... It's a PIA to get to. I bet it is!! no wonder they all ended up being cut

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Author:	Phil 850 [ Fri May 12, 2017 9:00 pm ]
Post subject:	Re: Maniflow extractors, bottom mount
Matt I wrote: 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... 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 ?