CwazyWabbit Posted April 8, 2013 Share Posted April 8, 2013 Couldn't find any comparison pictures of a Double 'S' exhaust system on here when I looked a while back so thought I'd post some from a 110 sport's utility system (so no midbox) compared to my old system. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 8, 2013 Author Share Posted April 8, 2013 Quote Link to comment Share on other sites More sharing options...
western Posted April 8, 2013 Share Posted April 8, 2013 I have a double S stainless system on my 110, I replaced the centre box with a straight through pipe a few years ago, it's been a good system. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 8, 2013 Author Share Posted April 8, 2013 It does seem more spritely and I have noticed the turbo is now boosting to a higher pressure, so I guess I'll need to adjust that now. Quote Link to comment Share on other sites More sharing options...
Big.Mike Posted April 8, 2013 Share Posted April 8, 2013 Couple of questions, where'd you get it and is it my eyes or is it a narrower pipe? Quote Link to comment Share on other sites More sharing options...
Aragorn Posted April 8, 2013 Share Posted April 8, 2013 Was it expensive? Not keen on those compression bends, the over axle one looks horiffic. The factory stuff is all mandrel bent. Also, is it just me or does it look smaller diameter?! Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 8, 2013 Author Share Posted April 8, 2013 It was direct from the factory (Double 'S') and they are cheap for a stainless exhaust at 303 pounds including vat and delivery. It is a slightly smaller diameter and the over axle bend does look better in the picture than in real life! Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted April 8, 2013 Share Posted April 8, 2013 wow, some good photos there, definitely something to munch on. but if you dont mind, i have some questions and opinions on the exhaust. Q, it certainly looks good. but it doesn't have a center silencer. does this make it much louder? and your old one has no end silencer, which one is louder/sounds better? your point about higher boosting, are you sure? as i understood (happy to be corrected ) but removing the mid box allows it to spool up faster rather that increase boost pressure? the bends.. they look rather constricting? epically over the axle! can you get a diameter measurement on the over axle bend please and of the rest of the exhaust please as it looks like it has a smaller diameter than your old one. and last but not least. where did you get if from and how much? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 8, 2013 Author Share Posted April 8, 2013 wow, some good photos there, definitely something to munch on. but if you dont mind, i have some questions and opinions on the exhaust. Q, it certainly looks good. but it doesn't have a center silencer. does this make it much louder? and your old one has no end silencer, which one is louder/sounds better? ..... My original used to have a back box ... but it fell off a year ago so I replaced it with a bit of pipe I made from a rolled up bit of computer case (pikey I know) but losing the back box made no noticable difference from standard. Removing the mid box on the new system has made it ever so slightly louder inside but not unpleasant, sounds quite nice .... not had a chance to rev it while standing behind the car due to short arms and no mates ...... your point about higher boosting, are you sure? as i understood (happy to be corrected ) but removing the mid box allows it to spool up faster rather that increase boost pressure? .... I agree with what you say as that is what I believed, however I base the comment about a higher boost purely on the fact the boost guage is now showing nearer to 20psi than the 15psi it used to show. ..... the bends.. they look rather constricting? epically over the axle! can you get a diameter measurement on the over axle bend please and of the rest of the exhaust please as it looks like it has a smaller diameter than your old one. and last but not least. where did you get if from and how much? I'll get some diameter measurements tomorrow when it's light Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted April 8, 2013 Share Posted April 8, 2013 My original used to have a back box ... but it fell off a year ago so I replaced it with a bit of pipe I made from a rolled up bit of computer case (pikey I know) but losing the back box made no noticable difference from standard. good improvisation! and thanks for the answers, much appreciated. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 8, 2013 Author Share Posted April 8, 2013 Had a quick measure of the pipe (will do the bends tomorrow though). Standard pipe is 60mm Stainless pipe is 54mm Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 9, 2013 Share Posted April 9, 2013 What is the wall thickness Barry? I still think it shouldn't be like that on the bends if its been done with the correct tooling. Looks like someone bent it over their knee Quote Link to comment Share on other sites More sharing options...
Aragorn Posted April 9, 2013 Share Posted April 9, 2013 54mm sounds quite small to me for a big turbo diesel engine... Assuming the same wall thickness thats a 20% reduction in area over stock! Not to mention the further restrictions on those bends. 2.5" or 63mm would be the minimum i'd expect, especially given its an aftermarket "upgrade". The factory TD5 system i've fitted to my rebuild is 63mm. I certainly wouldnt accept anything less than the factory 60mm pipe. Personally if it were my money, i'd be sending it back! Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 9, 2013 Author Share Posted April 9, 2013 54mm sounds quite small to me for a big turbo diesel engine... Assuming the same wall thickness thats a 20% reduction in area over stock! Not to mention the further restrictions on those bends. 2.5" or 63mm would be the minimum i'd expect, especially given its an aftermarket "upgrade". The factory TD5 system i've fitted to my rebuild is 63mm. I certainly wouldnt accept anything less than the factory 60mm pipe. Personally if it were my money, i'd be sending it back! I was concerned about it when it arrived but I had waited a month for it as they had run out of centre pipes and my current exhaust was literally hanging off (the rear section had lost the end pipe and exhaust hanger had detatched, I'd also had to weld the mid box up again) so I needed to get an exhaust on as it is my only vehicle. After fitting it and going for a drive it does feel more free reving, this can only be down to the lack of mid box or the fact the turbo now seems to be reaching a higher boost pressure (which I'don't fully understand why). Out of curiosity what diameter is a TD exhaust? I know a number of people are still running those after upgrading their engine to a TDI. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 9, 2013 Author Share Posted April 9, 2013 Ralph, out of curiosity could you take a picture of the over the axle bend in your exhaust please? Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted April 9, 2013 Share Posted April 9, 2013 My Janspeed one is 57mm diameter (and I now have a wet arse) but the bends are all mandrel bends so there's no reduction. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 9, 2013 Author Share Posted April 9, 2013 Do Janspeed still make them? Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted April 9, 2013 Share Posted April 9, 2013 Yes, but not cheap. http://www.motorsportworld.co.uk/frame-manranges.asp?code=52 Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 9, 2013 Author Share Posted April 9, 2013 Ouch, bit pricier. Do the parts only fit to other Janspeed parts? Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 9, 2013 Share Posted April 9, 2013 Nige had a nice system custom made and wasn't too expensive IIRC. Quote Link to comment Share on other sites More sharing options...
steve b Posted April 9, 2013 Share Posted April 9, 2013 A quick google brought up kewtube.com , a CNC pipe subcontractor , not so far from you , maybe get that one copied in bigger bore then send it back? It does seem a bit small on bore size and those bends are pretty badly crushed, almost like the wrong die was used? cheers Steveb Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted April 9, 2013 Share Posted April 9, 2013 My centre sectoin fitted the standard downpipe, but the second joint is a slide together one instead of a flange. Mine is about 10 years old now, so I don't know about the later ones. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 9, 2013 Author Share Posted April 9, 2013 I have spoken to Double 'S' about the exhaust, specifically the rear section with the bend that goes over the axle. They said that pretty much all the compression bends they do come out like that, they do also do mandrel bending (but not for that part) however due to the restrictions of their tooling it would increase the price considerably as they would have to cut and weld the bends together. So it does seem to be a case of you get what you pay for. The person I spoke to did also say that they hadn't had anyone come back to them with any performance problems after fitting one of these exhausts. I would add that so far that would seem to be the case with this system fitted to mine, although I can't help wondering what it would be like if it was a mandrel bent system of the correct diameter. Quote Link to comment Share on other sites More sharing options...
Les Brock Posted April 9, 2013 Share Posted April 9, 2013 Bends on my Griffin exhaust are like this ! Quote Link to comment Share on other sites More sharing options...
reb78 Posted April 9, 2013 Share Posted April 9, 2013 I had a full stainless system fitted by the same place as Nige. My downpipe was slightly smaller diameter than the rest (determined by the diameter of the turbo outlet), and then it went to a flexi joint by the sump and on through 2.5 inch diameter pipe. I have two free flowing silencers fitted (in the normal places). They also welded the bend over the rear axle, so it wasnt a bent curve. Whole thing cost £500. Lifetime warranty and they have tweaked it for me FOC since fitting to remove a little more of the exhaust drone i had. Quote Link to comment Share on other sites More sharing options...
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