Coupe exhaust manifolds needed

Moderators: scimjim, erikscimitardemon, Lukeyboy46, Roger Pennington, philhoward

roymck
RSSOC Member
Posts: 1101
Joined: Tue Mar 24, 2009 11:33 am
Location: Dorking Surrey
Has thanked: 15 times
Been thanked: 24 times

Coupe exhaust manifolds needed

Post by roymck » Sat Nov 24, 2018 8:11 am

Jim , been in touch with QRG , waiting for Nigel to get back to me .



roymck
RSSOC Member
Posts: 1101
Joined: Tue Mar 24, 2009 11:33 am
Location: Dorking Surrey
Has thanked: 15 times
Been thanked: 24 times

Coupe exhaust manifolds needed

Post by roymck » Sun Nov 25, 2018 12:41 pm

This is the one on the car , any idea who made these? Bit pointless having stainless manifolds if you use a ordinary steel flange that rusts away . I suppose I could find a way of repairing these but would prefer to use something else .
F395C3EB-0762-43D3-ACA6-8BFE0055C1B8.jpeg
F395C3EB-0762-43D3-ACA6-8BFE0055C1B8.jpeg (445.42 KiB) Viewed 1407 times



User avatar
scimjim
RSSOC Member
Posts: 37862
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 138 times
Been thanked: 983 times

Coupe exhaust manifolds needed

Post by scimjim » Sun Nov 25, 2018 1:05 pm

I have exactly the same - but I think this one has had an impact as the stainless has also cracked! I think these are double S from the 80s/90s as supplied by the traders.
image.jpg
image.jpg (263.92 KiB) Viewed 1403 times
image.jpg
image.jpg (328.49 KiB) Viewed 1403 times


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

User avatar
David Tew
RSSOC Member
Posts: 486
Joined: Sun Aug 06, 2006 11:09 am
Location: Cotswolds
Has thanked: 10 times
Been thanked: 40 times

Coupe exhaust manifolds needed

Post by David Tew » Sun Nov 25, 2018 3:30 pm

Wow Jim, that's a mess.
Here are my manifolds. They're Double-S bought from Don Pither when he sold-up. The collector has a ball-joint to prevent any stress on the manifolds themselves. Don told me he paid for the specific jig so they might be different to the V6 Coupe manifolds Double-S still list (@ £1,035.59 :shock: ) .
(Excuse the dust! :) )
rsz_manifold.jpg
rsz_manifold.jpg (137.35 KiB) Viewed 1387 times


- My wife says I don't listen to her ...... or something like that! -
SE4B Coupe - rebuilt on brand-new chassis.
Bought in 1978 and an RSSOC member since. 😲

AntC
RSSOC Member
Posts: 775
Joined: Wed Mar 03, 2010 10:23 am
Location: Chelmsford, Essex. UK
Has thanked: 6 times
Been thanked: 2 times

Coupe exhaust manifolds needed

Post by AntC » Sun Nov 25, 2018 4:03 pm

So that’s the rather dubious “lifetime guarantee” out of the window Jim! The person who bought a car from me fitted with a Double S exhaust that cracked was told that once the original purchaser and the car parted company, the guarantee was void. Having said that, I like the company and its products and my 5 is fitted with them.


Cheers
Ant

Scimitars owned:
2018 - 19 SE5 SCV 748 G
2001 - 13 SE4b - TMA 911 J
1971 - 76 SE5 CYB 435 J

roymck
RSSOC Member
Posts: 1101
Joined: Tue Mar 24, 2009 11:33 am
Location: Dorking Surrey
Has thanked: 15 times
Been thanked: 24 times

Coupe exhaust manifolds needed

Post by roymck » Sun Nov 25, 2018 5:04 pm

David Tew wrote:
Sun Nov 25, 2018 3:30 pm
Wow Jim, that's a mess.
Here are my manifolds. They're Double-S bought from Don Pither when he sold-up. The collector has a ball-joint to prevent any stress on the manifolds themselves. Don told me he paid for the specific jig so they might be different to the V6 Coupe manifolds Double-S still list (@ £1,035.59 :shock: ) .
(Excuse the dust! :) )
rsz_manifold.jpg
£1,035.59 jeez I hope that includes VAT . That’s shocking !



User avatar
David Tew
RSSOC Member
Posts: 486
Joined: Sun Aug 06, 2006 11:09 am
Location: Cotswolds
Has thanked: 10 times
Been thanked: 40 times

Coupe exhaust manifolds needed

Post by David Tew » Sun Nov 25, 2018 8:10 pm

roymck wrote:
Sun Nov 25, 2018 5:04 pm
£1,035.59 jeez I hope that includes VAT . That’s shocking !
Oops, just realised that's for a complete system - sorry.
They don't actually give a price for Coupe manifolds alone but GTE ones are £480.46 so the Coupe ones shouldn't be too different. The part numbers for the Coupe manifolds themselves are SSRT10 and SSRT11. I suspect these are short-branch as they list the front pipes separately. (SSRT36).
Double-S.JPG
Double-S.JPG (50.77 KiB) Viewed 1350 times


- My wife says I don't listen to her ...... or something like that! -
SE4B Coupe - rebuilt on brand-new chassis.
Bought in 1978 and an RSSOC member since. 😲

Scimitarv6coupe
Posts: 11
Joined: Wed Aug 15, 2018 10:39 pm
Been thanked: 2 times

Coupe exhaust manifolds needed

Post by Scimitarv6coupe » Sun Nov 25, 2018 9:11 pm

My pattern set are the longer type with the ball joint. I'm talking to a local fabricator and hope to have some sets made up within the next month or so



User avatar
dand
Posts: 48
Joined: Sun Jan 24, 2016 5:41 pm
Been thanked: 1 time

Coupe exhaust manifolds needed

Post by dand » Sun Nov 25, 2018 9:23 pm

As Tim (ScimboTimbo - would have been better!) says I recently used Simpson Race Exhausts for a custom Caterham system. They're very good and will design and build the system to exactly fit the car but they're not cheap. I'll give them a call next week to see if what they can do.



User avatar
BigBobPilot
RSSOC Member
Posts: 1240
Joined: Mon Aug 06, 2007 8:41 pm
Location: Warwickshire
Been thanked: 107 times

Coupe exhaust manifolds needed

Post by BigBobPilot » Mon Nov 26, 2018 12:22 am

The collectors on these manifolds are woeful & are guaranteed to fail. The inlet of the collector is not very nice, but it's the outlet that is the real problem.

As the outlet pipe is fitted inside the collector (blue line below) you get gas flow between the collector wall & the pipe (red arrows). This just makes the pipe & collector really hot in an area that is subjected to repeated stress. The gas flow is also very poor, but then the exhaust condensate also collects in there too, which is pretty corrosive, they are a cheap ferritic stainless steel so will have some corrosion, but where the weld is, they are more likely to corrode, so the fatigue & condensate will just finish them off over time. The nice shiny stainless steel pipe people think of are austenitic (i.e 304). A magnet won't stick to austenitic stainless, but will to ferritic stainless.
Collector-1.JPG
Collector-1.JPG (147.8 KiB) Viewed 1291 times
The cheapest & easiest way to give these manifold a new lease of life is to cut the outlet pipe off, get a new piece of pipe (ferritic 441 would be ideal) swaged to fit on the outside of the collector (yellow in image below) welded to the outside of the collector (green below) and welded using the correct filler wire, using standard filler wire will weld, but it & the surrounding metal will corrode. You can then decide whether to keep a flange joint where you have it, or have the tube bent through 90 degrees and have the joint under the floor & inline with the pipe underneath, this would be better as it will take less stress. I've done this myself in the past purely for performance gains on my original hillclimb car. The performance gain is that the gas flow is vastly improved, the restriction of the design is like having a smaller pipe on there.

Although Jim's manifolds look beyond redemption, roymck, yours look like a simple repair as long as there are no other cracks, but they'll need to come off the car to be repaired. I just used Jim's photo as it was clearer.
Collector-2.JPG
Collector-2.JPG (150.18 KiB) Viewed 1291 times


Ben

SS1 CA18DET race car
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

roymck
RSSOC Member
Posts: 1101
Joined: Tue Mar 24, 2009 11:33 am
Location: Dorking Surrey
Has thanked: 15 times
Been thanked: 24 times

Coupe exhaust manifolds needed

Post by roymck » Mon Nov 26, 2018 6:57 pm

scimjim wrote:
Fri Nov 23, 2018 8:33 pm
Did you ask QRG? I think Nigel said he was going to get some made a while ago?
Got reply from Nigel , he does not have any manifolds in stock . He is looking for a new supplier but has no pattern to make from . So that avenue doesn’t look too good.



User avatar
scimjim
RSSOC Member
Posts: 37862
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 138 times
Been thanked: 983 times

Coupe exhaust manifolds needed

Post by scimjim » Mon Nov 26, 2018 7:05 pm

Presumably that means Graham doesn’t have any either. That means double S have the only pattern at present?


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

User avatar
Roger Pennington
RSSOC Member
Posts: 20034
Joined: Tue Aug 29, 2006 9:43 pm
Has thanked: 147 times
Been thanked: 527 times

Coupe exhaust manifolds needed

Post by Roger Pennington » Mon Nov 26, 2018 7:49 pm

BigBobPilot wrote:
Mon Nov 26, 2018 12:22 am
The nice shiny stainless steel pipe people think of are austenitic (i.e 304). A magnet won't stick to austenitic stainless, but will to ferritic stainless.
The Cheesman ones were austenitic, which was always listed as an advantage (though of course it did have a cost attached.....).


....Roger

RSSOC member (since 1982)
- - - - - - - - - - - - - - - - -
Image

"Condition can be bought at any time; Originality, once lost, is gone forever" - Doug Nye

User avatar
dand
Posts: 48
Joined: Sun Jan 24, 2016 5:41 pm
Been thanked: 1 time

Coupe exhaust manifolds needed

Post by dand » Tue Nov 27, 2018 10:41 am

One off set of custom made manifolds is looking like £1100-1200 plus VAT!!! :shock: :shock:



User avatar
David Tew
RSSOC Member
Posts: 486
Joined: Sun Aug 06, 2006 11:09 am
Location: Cotswolds
Has thanked: 10 times
Been thanked: 40 times

Coupe exhaust manifolds needed

Post by David Tew » Tue Nov 27, 2018 11:19 am

dand wrote:
Tue Nov 27, 2018 10:41 am
One off set of custom made manifolds is looking like £1100-1200 plus VAT!!! :shock: :shock:
Crikey, that's more than a complete stainless system including manifolds from Double-S! It will be interesting to see what ScimitarV6Coupe finds when he speaks to his local fabricator.


- My wife says I don't listen to her ...... or something like that! -
SE4B Coupe - rebuilt on brand-new chassis.
Bought in 1978 and an RSSOC member since. 😲

Post Reply

Return to “Coupé”