 | Home > Maintenance & Modifications > What stainless exhaust/performance exhaust for 300tdi 110? |
 
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 761   
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I have a standard, early 300tdi 110 Defender, which is good because it is pre-cat/EGR age so we are already ahead of the curve for performance upgrades there.
Just checking her over last week ready for an upcoming MOT and spotted the exhaust front pipe has some corrosion pinholes along the seam so it needs replacing sooner rather than later. Five years ago I fitted some of the Paddocks/SS stainless exhaust sections to replace rotten middle box section and tail pipe. Pretty cheap, but sure enough you get what you pay for and these have since started to rust(?!?!) on the tubes quite badly although strangely the silencer part has remained nice and shiny (under the dirt  ). I suspect the stainless pipe is a very poor grade and barely stainless at all in reality!
Anyway, more fool me I decided that for the price I might as well add the front pipe from the same source but on arrival I didn't like the look of the bends as these appear to stretch the pipe and really shrink the diameter which can't be a good thing for performance surely. I then got the calipers out and measured the diameter to compare to the original standard front pipe. Turns out SS only use 2" pipe and my other sections are also only 2"  . The original pipe is 2 1/4" which I have now found out is the correct standard size so I'm going to return the front pipe for a refund as it isn't the right spec.
I have decided my best option is a full replacement with something stainless in the correct bore, or even better why miss a chance for a small improvement and maybe go a bit bigger...... 
A quick google keeps bringing THIS up and the 2.5" sports silencer option seems to fit the bill. The single silencer will match what I have now as I replaced the centre box with a straight through pipe. They keep the centre silencer but delete the back box instead which is tidier around the rear wheel arch. Is there any other options/suppliers I should be looking at? Custom build maybe? |
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31st Aug 2021 4:35pm |
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| JOW240725 Member Since: 04 May 2015 Location: Suffolk Posts: 7873 
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I have a Demand SS exhaust and my V8 and it is lovely! Great guys too, highly recommend. Only 2 miles down the road too which is handy for me
 James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641 MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557 Instagram @suffolk_rovers |
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31st Aug 2021 6:48pm |
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| donmacn Member Since: 07 Nov 2017 Location: Nth Scotland Posts: 1829 |
I went for a Griffin system. Beautiful piece of work. I think it's 3" bore throughout. Single silencer.
For me it complements a bunch of other stuff, but it just does its job well. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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31st Aug 2021 7:24pm |
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| donmacn Member Since: 07 Nov 2017 Location: Nth Scotland Posts: 1829 |
Yes, it's on my 1994 (only!) Defender.
Like I said, it was to complement other stuff, so I don't think I could say whether the exhaust itself makes the difference. I had my engine rebuilt and while that was being done I had an AMC gas-flowed head fitted; A VNT turbo; Full width intercooler; the fuel pump was tweaked; and I fitted a Donaldson air filter. All of this has made a huge difference to the driveability of the car, and I don't doubt that each thing makes its own contribution, but I'm afraid I couldn't isolate the exhaust, sorry. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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31st Aug 2021 7:59pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5416 
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Had a few systems over the tears. But can’t fault the Demand one. Brilliant quality, no messing about. Great controllable sound on my Td5.
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31st Aug 2021 9:08pm |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 761
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OK, just ordered the Demand one after speaking to them on the phone.
Bit of a wait unfortunately but that's not a big problem other than my impatience. Should have some lovely steel shininess arriving in 10-14 days hopefully. Did look at the griffin 3" system but think it might be overkill for a standard untuned 300tdi and also appears to be sleeved joints with clamps which is not my favourite system. The Demand exhaust has the standard sections and joints, just bigger so looks more 'standard' which is ok with me. |
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1st Sep 2021 11:28am |
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| Litch Member Since: 10 Mar 2013 Location: Oxfordshire Posts: 760 
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I found exactly the same issue with the DoubleS systems.
When my OE 300TDi system came up for replacement I bought a DoubleS system and found the exact same issue, diameter was smaller and the bends were very poor with definite kink / flat instead of a nice smooth bend. Needless to say it went straight back and I found an alternative. Fast forward 15-years or so to last year and I bought a Demand "sports" system with a single silencer. No issues. ONE LIFE, GET IT! Last edited by Litch on 2nd Sep 2021 8:26pm. Edited 1 time in total |
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1st Sep 2021 7:39pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5416
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I had both. You made the correct decision  |
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2nd Sep 2021 8:07am |
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| lb73 Member Since: 27 May 2016 Location: North Wales Posts: 287 
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Another thumbs up here for Demand, just fitted one a few weeks back - spot on!
 Click image to enlarge Click image to enlarge 1999 300TDI 110 CSW BMW 3.0 1972 VW Beetle 1200 2002 Dax Rush 3.9 V8 2012 Audi A3 tdi 2020 Renault Kangoo electric |
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2nd Sep 2021 10:48pm |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 761
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Thanks for all the positive posts about the Demand exhausts, make me feel much better about spending a considerable sum on something so 'ordinary' as an exhaust for an old car
Sounds like I will not be disappointed. |
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3rd Sep 2021 10:43am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5416
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Mine
Click image to enlarge Click image to enlarge |
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3rd Sep 2021 10:41pm |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 761
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Click image to enlarge Spot the difference. Demand front pipe curves v Paddock's/SS attempt! |
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13th Sep 2021 11:00pm |
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| Litch Member Since: 10 Mar 2013 Location: Oxfordshire Posts: 760
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Dug out some old photos of my DoubleS downpipe (which was promptly returned), exactly the same issue.
My photos date from 20/07/2008 so the quality hasn't improved at all! Click image to enlarge Click image to enlarge ONE LIFE, GET IT! |
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14th Sep 2021 8:17pm |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 761
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They are shockingly bad. Wish I had spotted the issues when fitting the rear pipes because I could have gotten to this point much quicker.
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14th Sep 2021 9:44pm |
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