 | Home > Maintenance & Modifications > Exhaust newbie - do I need to use paste? |
 
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841  
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Morning all,
Despite working on cars for a few years, I've never actually done any work on exhausts. I think mainly because it's a job that's much easier with a ramp, and I've never had access to one of them - so I've usually left this to garages. Now though, as part of the rebuild/refurb I have a quality stainless exhaust to fit, and find I'm lacking some basic experience. The mounts and clamps will be easy enough ( good quality T- bolt clamps etc ) but when I'm assembling it - a stainless exhaust - do I need to use any kind of paste or sealant on the pipe joins? Thanks in advance (300Tdi 110 if it makes any difference) 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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18th Jan 2020 11:12am |
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| htb2 Member Since: 02 Nov 2018 Location: Carmarthenshire Posts: 529 
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Didn't, with my stainless system on my 300tdi 90, No problems since or at MOT time
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18th Jan 2020 11:26am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5698 
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No. Not needed
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18th Jan 2020 11:26am |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841
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Thanks very much gents. It certainly makes life easier.
I knew exhaust paste existed, so kind of thought it might be for routine use. 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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18th Jan 2020 2:57pm |
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| htb2 Member Since: 02 Nov 2018 Location: Carmarthenshire Posts: 529
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Bodgers paste for filling gaps in misaligned sections.
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18th Jan 2020 4:20pm |
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| Litch Member Since: 10 Mar 2013 Location: Oxfordshire Posts: 762 
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As above, paste should not be required.
As a matter of interest what make of exhaust have you bought, if it is a DoubleS then check it before fitting? 
I bought one for my 300TDi 90 several years ago and it went straight back due to the poor quality of manufacture. Not only was the CSA of the pipe considerably smaller than the genuine system it was replacing but the downpipe was flattened at the 90degree bend. When I queried it with DoubleS they said it wasn't a problem and they had sold lots like it! Needless to say it went straight back and the SS system I replaced it with was properly built and fitted & worked perfectly. Took delivery yesterday of a Demand SS system...…………………… lovely! 
DoubleS downpipe.  Click image to enlarge Click image to enlarge Demand system (stock photo). Click image to enlarge ONE LIFE, GET IT! |
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18th Jan 2020 6:46pm |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841
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^^^
I think I'd seen this thread/post about these exhausts before, and registered enough to know that it wasn't an option I would go for. I've got a Griffin system for mine - appropriate for all the other engine mods/enhancements which I've found myself doing/having done. Won't say any more at the moment - not trying to be a t*ss*r, tease or any such thing, just that I'm kind of looking forward to the big 'reveal' in my rebuild thread below. 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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18th Jan 2020 10:29pm |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841
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Steve - thanks - hadn't seen your reply earlier on the phone. As above, hopefully the quality of the Griffin system will avoid any such issues. But... a more general question after all of the above feedback. If there were small leaks in the system, how would I know? I know what a blown exhaust sounds like - even a 1.2 Clio can sound like a Harley - but if it was 95% OK, just leaking slightly, would I be listening for soemthing, or looking for soot traces, or what...? As I say, I've just never done this particular job before. 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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18th Jan 2020 10:59pm |
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