↓ Advertise on Defender2 ↓

Home > Maintenance & Modifications > Exhaust newbie - do I need to use paste?
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

Exhaust newbie - do I need to use paste?
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...
Post #810838 18th Jan 2020 11:12am
View user's profile Send private message View poster's gallery Reply with quote
htb2



Member Since: 02 Nov 2018
Location: aberdeenshire
Posts: 507

Scotland 
Didn't, with my stainless system on my 300tdi 90, No problems since or at MOT time
Post #810839 18th Jan 2020 11:26am
View user's profile Send private message View poster's gallery Reply with quote
landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5408

2006 Defender 110 Td5 USW Zermatt Silver
No. Not needed
Post #810840 18th Jan 2020 11:26am
View user's profile Send private message View poster's gallery Reply with quote
donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

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...
Post #810852 18th Jan 2020 2:57pm
View user's profile Send private message View poster's gallery Reply with quote
htb2



Member Since: 02 Nov 2018
Location: aberdeenshire
Posts: 507

Scotland 
Bodgers paste for filling gaps in misaligned sections.
Post #810864 18th Jan 2020 4:20pm
View user's profile Send private message View poster's gallery Reply with quote
custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 19452

United Kingdom 
Flanged mating surfaces on the Defender systems so not used. (Unless aftermarket.)I didn’t either.
The only place sealant paste would be used that I could think of is two scenarios.

1.) Misalignment causing exhaust gas leaks, temporary solution. Should be fixed properly.

2.) Sleeve fittings with clamps, mainly due to again misalignment.

I wouldn’t use it really unless you find it’s required, more of a fix than a requirement. Diesels Lives Matter. ⛽️🛢️👨‍🔧🧰⚙️
And if You Love the Country, then we’re on the same side ~
I got’ love for Britain, I got’ British pride’. 🇬🇧
Post #810880 18th Jan 2020 5:32pm
View user's profile Send private message View poster's gallery Reply with quote
Litch



Member Since: 10 Mar 2013
Location: Oxfordshire
Posts: 758

England 
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? Confused
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! Very Happy


DoubleS downpipe.


Click image to enlarge




Click image to enlarge



Demand system (stock photo).


Click image to enlarge
 ONE LIFE, GET IT!
Post #810889 18th Jan 2020 6:46pm
View user's profile Send private message View poster's gallery Reply with quote
donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

^^^

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. Confused 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...
Post #810917 18th Jan 2020 10:29pm
View user's profile Send private message View poster's gallery Reply with quote
donmacn



Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1829

custom90steve wrote:
Flanged mating surfaces on the Defender systems so not used. (Unless aftermarket.)I didn’t either.
The only place sealant paste would be used that I could think of is two scenarios. .


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...
Post #810923 18th Jan 2020 10:59pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums