wobbly ollie Posted May 7, 2017 Report Share Posted May 7, 2017 I am looking to re lagg my exhaust pipe but wanted to check if there was any method or advice available? Eg. How many layers? Best method of securing? I already have a new pop studded jacket/sleeve ordered for the manifold (Barrus Shire) but any help would be welcome. Link to comment Share on other sites More sharing options...
luggsy Posted May 7, 2017 Report Share Posted May 7, 2017 Have a look on YouTube on how to lag it Link to comment Share on other sites More sharing options...
wobbly ollie Posted May 8, 2017 Author Report Share Posted May 8, 2017 Thank Luggsy I am struggling to find anything on youtube that refers to a narrowboat diesel. Most are based on motorbikes....but i guess its the same principle... Link to comment Share on other sites More sharing options...
bizzard Posted May 8, 2017 Report Share Posted May 8, 2017 4 minutes ago, wobbly ollie said: Thank Luggsy I am struggling to find anything on youtube that refers to a narrowboat diesel. Most are based on motorbikes....but i guess its the same principle... Just wind on one layer with half width overlaps something like 2'' wide fireproof tape, securing at regular intervals by two round turns and twist together of copper wire. Copper wire pulled out of old mains domestic twin and earth cable will do fine, the grey plastic covered stuff. Link to comment Share on other sites More sharing options...
wobbly ollie Posted May 8, 2017 Author Report Share Posted May 8, 2017 16 minutes ago, bizzard said: Just wind on one layer with half width overlaps something like 2'' wide fireproof tape, securing at regular intervals by two round turns and twist together of copper wire. Copper wire pulled out of old mains domestic twin and earth cable will do fine, the grey plastic covered stuff. Am i right in saying that the purpose of the wrapping is to retain heat within the exhaust and reduce noise to some extent....? Link to comment Share on other sites More sharing options...
bizzard Posted May 8, 2017 Report Share Posted May 8, 2017 2 minutes ago, wobbly ollie said: Am i right in saying that the purpose of the wrapping is to retain heat within the exhaust and reduce noise to some extent....? Well it does that a bit, but its mainly to prevent you from burning yourself on it and to prevent burning or scorching anything close by. Link to comment Share on other sites More sharing options...
wobbly ollie Posted May 8, 2017 Author Report Share Posted May 8, 2017 Got it thanks. Link to comment Share on other sites More sharing options...
Muddy Ditch Rich Posted May 8, 2017 Report Share Posted May 8, 2017 2 hours ago, wobbly ollie said: Am i right in saying that the purpose of the wrapping is to retain heat within the exhaust and reduce noise to some extent....? Nope. Link to comment Share on other sites More sharing options...
Machpoint005 Posted May 8, 2017 Report Share Posted May 8, 2017 2 hours ago, bizzard said: Well it does that a bit, but its mainly to prevent you from burning yourself on it and to prevent burning or scorching anything close by. I agree with its purpose, but the noise still comes out of the spout, not the casing (pipe) and the heat is all waste heat anyway, so it doesn't matter where it is thrown away! Link to comment Share on other sites More sharing options...
ditchcrawler Posted May 8, 2017 Report Share Posted May 8, 2017 2 hours ago, Machpoint005 said: I agree with its purpose, but the noise still comes out of the spout, not the casing (pipe) and the heat is all waste heat anyway, so it doesn't matter where it is thrown away! But without the lagging your enine hole could get much hotter as someone posted the other week. Link to comment Share on other sites More sharing options...
mark99 Posted May 8, 2017 Report Share Posted May 8, 2017 (edited) I used titanium wrap and use two layers 55% overlap and secure with hosepipe clips. Wire is ok but can snag you hence the clips. Jubilee clips iirc. The titanium does not stain like the white stuff. Edited May 8, 2017 by mark99 Link to comment Share on other sites More sharing options...
mark99 Posted May 8, 2017 Report Share Posted May 8, 2017 Note there is a scavenging benefit to wrapping but thats for high perf. engines not your canal boat engine. Link to comment Share on other sites More sharing options...
wobbly ollie Posted May 8, 2017 Author Report Share Posted May 8, 2017 Thanks folks. Any specific source or just a case of Googling 'exhaust wrapping' Link to comment Share on other sites More sharing options...
Chewbacka Posted May 8, 2017 Report Share Posted May 8, 2017 I got mine from ebay. Use 'exhaust tape' in the search box. Often comes with some stainless steel cable ties if you don't want to use copper wire. Link to comment Share on other sites More sharing options...
mark99 Posted May 9, 2017 Report Share Posted May 9, 2017 Be careful applying the stainless ties they are sharp edged. I would use gloves and pliers. Link to comment Share on other sites More sharing options...
magpie patrick Posted May 9, 2017 Report Share Posted May 9, 2017 12 hours ago, ditchcrawler said: But without the lagging your enine hole could get much hotter as someone posted the other week. Indeed: that someone was me, air cooled engine sucking in hot air.. Link to comment Share on other sites More sharing options...
1st ade Posted May 9, 2017 Report Share Posted May 9, 2017 47 minutes ago, magpie patrick said: Indeed: that someone was me, air cooled engine sucking in hot air.. ... some of it from the unlagged exhaust, the rest... Link to comment Share on other sites More sharing options...
GUMPY Posted May 9, 2017 Report Share Posted May 9, 2017 (edited) I have a load of new lagging in my lockup. You can have it for a couple of beers, our exhaust is water cooled so no need to lag it J Edited May 9, 2017 by Loddon Link to comment Share on other sites More sharing options...
Chewbacka Posted May 9, 2017 Report Share Posted May 9, 2017 (edited) Deleted, appeared in a different thread to the one I was reading - most odd Edited May 9, 2017 by Chewbacka Link to comment Share on other sites More sharing options...
magpie patrick Posted May 9, 2017 Report Share Posted May 9, 2017 11 hours ago, 1st ade said: ... some of it from the unlagged exhaust, the rest... From the politicians and university lecturers I keep in the engine bay... Link to comment Share on other sites More sharing options...
Featured Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now