Exhaust manifolds

Technical questions and answers
Post Reply
User avatar
Geoff
Posts: 599
Joined: Sat Oct 29, 2011 2:21 am
Location: Leicester UK

Exhaust manifolds

Post by Geoff »

Seeking others' experiences/observations on replacement exhaust manifolds, Genuine, claiming to be OEM, or pattern made by who knows?, as the price differences are enormous. And the quality differences??
2 1981 Stage One 109 V8 SWs
Image
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

Do you have a link? As I haven't noticed any.
User avatar
Geoff
Posts: 599
Joined: Sat Oct 29, 2011 2:21 am
Location: Leicester UK

Re: Exhaust manifolds

Post by Geoff »

https://www.johnrichardssurplus.co.uk/l ... c5925.html

https://www.pablanchard.co.uk/shop/prod ... C5925.html (incorrectly referred to as LH here)

https://www.pablanchard.co.uk/shop/prod ... R2537.html (I understand this to be different part number, same part)

http://www.lrseries.com/shop/product/li ... LD-RH.html

https://www.brit-car.co.uk/product.php/ ... sy___inlet (incorrectly referred to as 'inlet')

https://www.johncraddockltd.co.uk/serie ... toxed.html

https://www.island-4x4.co.uk/manifold-e ... 20736.html

https://www.lrdirect.com/ERR2537-Manifold/

http://www.paddockspares.com/err2537-manifold.html

https://midulster4x4.co.uk/product/exha ... err2537-2/

Well, you asked. As far as I know, the LH manifold is completely unavailable new. I'd also be interested in suggestions for an alternative RH manifold (for both the 11G and the 14G engine, if that makes any difference) if I no longer need the heat transfer thing, as well as any suggestions for any alternatives for the LH manifold for either of those engines. The number of different part numbers for the manifolds for these V8 engines is a nightmare. ERR2533 looks like the RH manifold to use if you don't want the heat transfer box, with prices varying between £60 and £400, but I think that's enough links for now. Anyone fitted a 'cheap' Britpart or Bearmach one?
2 1981 Stage One 109 V8 SWs
Image
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

I'm still not sure where you're going.

From you're opening comment I'd thought you'd found someone selling reproduction manifolds. As in BRITPART had found some former soviet tank foundry to make manifolds from leftover slag and depleted uranium for £5 each. As per usual Britpart standards.

From those I looked at they're just the myriad of different designs for the RHS for various basic V8 applications. Plus the later revised castings for the same item. Only a fraction of the actual castings made for the 3.5 in its countless applications.
Lewy
Posts: 77
Joined: Sat Jul 16, 2016 1:22 pm

Re: Exhaust manifolds

Post by Lewy »

Why not get headers? These should fit.

https://www.performanceexhaust.com.au/p ... IE/GEN325E
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

Obviously your definition of fit is different to the dictionary version. If you ever find a set that actually fit without the usual exhaust shop buggery, gas-axe butchery, DIY bits from scrap etc. then yes I'd probably buy a set.
User avatar
Geoff
Posts: 599
Joined: Sat Oct 29, 2011 2:21 am
Location: Leicester UK

Re: Exhaust manifolds

Post by Geoff »

Sorry, to my untrained eye, and from looking at only photos and part numbers (where photos were even available), all those looked the same part to me. From your comment, can I take it that you would never recommend fitting a Britpart manifold or any other similarly priced manifold from another supplier such as Bearmach? I googled this before opening this thread and the only result I came up with (see link below) was someone who said (in 2008) that they had fitted two pattern (in their case for the 2.25 engine) exhaust manifolds and both had "warped and leaked after less than 10,000km". Someone else replied that they had fitted a pattern one some five years earlier and experienced no problems with it, though a friend had not been so fortunate. He also commented that he "always considered they must be manufactured by a UK OEM - possibly now they come from India or China ?" So I was just looking for some update on that, and confirmation that I would be better looking for a used Genuine manifold in reasonable condition if I didn't want to pay for a new Genuine one. That's the RH one - as I said, as far as I am aware, nothing new is available for the LH, unless anyone can tell me different?

https://www.lrukforums.com/threads/exha ... art.66213/
2 1981 Stage One 109 V8 SWs
Image
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

Someone else's car and they're a lazy tightwad owner, I'd warn them then fit it and put the warning in bold on the invoice.

It is hit and miss. OEM is an overly masturbated term flogged by sellers and end users. Both too dumb to recognise that the OEM supplier (if they ever were) is frequently making a low grade knock-off to cash in on tooling they already have. However some are simply making the same part. You could buy UK made water pumps for Mini that were OEM and the company machined the Leyland swirl off the casting. They were supplied in a plastic bag, never had any problems and wish I'd bought more.

A present day Lucas toggle switch (modern part number and part number label on side) isn't as good as an original British made item (full Lucas part number branded in) and I haven't tried the mystery brand version.

I usually try and buy genuine wherever possible.

Genuine NOS RH in just about any version are available and usually affordable. Not that I've tried it but offered up the only apparent difference I could find when fitting a basic RH to the LHS was the stud location. Problem with either when buying used is that the studs rust in place and fuse together. They can be a nightmare to extract and many owners and repairers do absolute butcher jobs. Metric studs in a UNF manifold, crooked, misplaced…. plus the carbon, rust and scale.

In RH I usually grab any NOS without EGR but with the two side stud holes for the heat shield. But if you've ever tried to remove an old EGR for replacement, buy the new manifold if there's one available. You save on the labour.

"IF" you could actually buy a free flow manifold with matching Y pipe that would bolt up to the standard pipework, plus clear the starter etc. then I'd buy a set. But not the generic fit nothing crap offered for Rover V8 (ANY rover v8 - P5B, P6B, SD1, Morgan, Range-Rover…) with the secret squirrel implication of butcher your car as required and put your seat belt on and off with both hands incessantly, while chanting 'performance'.
User avatar
Geoff
Posts: 599
Joined: Sat Oct 29, 2011 2:21 am
Location: Leicester UK

Re: Exhaust manifolds

Post by Geoff »

Thanks very much for your reply, which only confirms my existing view that pattern tends to be rubbish and that OEM can be anything between rubbish to same as the original Genuine item depending, and that's it's an overworked term. I'm only concerned with my own 'cars' and am neither lazy nor a tightwad and, like you, generally choose Genuine when possible unless I think I'm being ripped off for it and paying a huge premium for a branded cardboard box - it usually depends on whether you're in a position to be able to judge the quality of a cheaper OEM, or indeed pattern, part - which often one is not, especially if buying online and where companies are bought out and the name is the only thing remaining the same (I'm aware of the situation regarding Lucas)

I'd wondered about fitting a basic RH manifold (ERR2533 I think) to the LHS so thanks for that.

Notice no one has leapt in yet to defend pattern/'OEM' manifolds for around £70 or even more, and I'm not holding my breath ...
2 1981 Stage One 109 V8 SWs
Image
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

I had wondered why 2.25 manifolds were reproduced. As generally used items are plentiful. I'd guessed that TD5 had a design issue from new.

Someone had suggested the short tubular replacement as with the Disco et-al twin port manifold. But there didn't appear to be any follow up with who was the manufacturer or supplier and whether they'd make a single port version.
disco2hse
Posts: 1655
Joined: Sun Apr 27, 2008 3:51 am
Location: Auckland NZ

Re: Exhaust manifolds

Post by disco2hse »

What about Disco 1 manifolds?

Mine now is 3.9 with them. Tight fit and some creative adjustment, but they went in and they are replaceable.

Oh, and about exhaust shop buggery, what about this? You might get better results from your headers with a little bash and slash.

https://www.youtube.com/watch?v=azPKIjx ... endChannel
Alan

1983 ex-army FFR 109 Stage 1
2005 Disco 2 HSE TD5
map1275
Posts: 1094
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Exhaust manifolds

Post by map1275 »

Seen that one before.
I once raised the issue of noise testing with Queensland Transport about an owner potentially squishing the exhaust pipe with giant multi-grips to reduce db. All was good as long as nothing else was affected. And yes, owners do such things to pass noise testing.

What about where the exhaust shop force the wrong studs into holes, throw away expensive heat shields, ignore anything now being melted by radiated heat, chop off flange joints in favour of butt welds so you can't pull anything apart again...
disco2hse
Posts: 1655
Joined: Sun Apr 27, 2008 3:51 am
Location: Auckland NZ

Re: Exhaust manifolds

Post by disco2hse »

Well, I guess you don't need to go to those kinds of service provider ;)
Alan

1983 ex-army FFR 109 Stage 1
2005 Disco 2 HSE TD5
Post Reply