muddy Posted August 28, 2008 Share Posted August 28, 2008 Morning folks, A friend of mine wants me to build him an exhaust for his 90 with a 2.8 isuzu lump in it, i'm going to use 2 1/2 pipe for the downpipe and mid section but going over the axle is a bit of a pain not to mention 2 1/2 bore silencers are bloody expensive everywhere i look. Whilst i was in my local motorfactors i got a price for a td5 90 rear section and it came out at £43 plus VAT which i didnt think was bad at all by the time i have bent the pipe, bought the silencer etc etc so my question is just what size is a Td5 exhaust? Secondly where can i get the flanges to join the pipe together at a half decent price, on my trialer i just made a sleeve so i could use a clamp but i would prefer to do this job a little more proffesionaly. Thanks, Will. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 29, 2008 Share Posted August 29, 2008 I can't check until tomorrow but I would have said Td5s were 2.5" bore...? Quote Link to comment Share on other sites More sharing options...
tuko Posted August 29, 2008 Share Posted August 29, 2008 I have a Td5 down pipe in the corner of the garage that measures 63.6mm ( 2½") in OD. Todd. Quote Link to comment Share on other sites More sharing options...
Eightpot Posted August 29, 2008 Share Posted August 29, 2008 You can use late 300TDi sections as well - still 2.5". There isn't a rear silencer on the back sections of these, they use a single large centre box - replace this with a Britpart stainless silencer replacement section and you've got a straight through system for less than £100, which will take you to within a couple of feet of the manifold. Quote Link to comment Share on other sites More sharing options...
Eightpot Posted August 29, 2008 Share Posted August 29, 2008 300TDi rear exhaust section - ESR4527 £45 delivered from DLS ) Quote Link to comment Share on other sites More sharing options...
freeagent Posted August 29, 2008 Share Posted August 29, 2008 Cheapest source of flanges is to cut them off scrap exhaust components.... I agree with Eightpot, try to use standard parts where possible, they are cheap and easy to replace... Quote Link to comment Share on other sites More sharing options...
muddy Posted August 29, 2008 Author Share Posted August 29, 2008 Cheers Folks. Yep I try and use standard but seen astho its got a 2.8 isuzu and the turbo is on the other side i'm fairly certain that a mid pipe will be too far forward for the downpipe to connect up to. Looks like i will be ringing round for a td5 exhaust in the near future Will. Quote Link to comment Share on other sites More sharing options...
will_warne Posted August 29, 2008 Share Posted August 29, 2008 First off, does he need a silencer??? The turbo will take out quite a lot of the noise anyway. When I came to making up a mild steel system on the 90 I settled on a 'Cherry Bomb' straight through box. Made to order (2.5" ID x 3.5" OD x 12" IIRC - Si White has the box now so you could ask him to get out the measuring tape) it was only about £40. Although it was small it was pretty quiet while cruising and only slightly boomy on full chat - much quieter than I expected given the size! Quote Link to comment Share on other sites More sharing options...
smo Posted August 30, 2008 Share Posted August 30, 2008 63mm on mine from memory (2.5") - i built the exhaust on my d-lander, its a downpipe connected to a single piece of stainless tube....i used the flanges from the old system on mine, just migged them on and voila Quote Link to comment Share on other sites More sharing options...
muddy Posted August 31, 2008 Author Share Posted August 31, 2008 The problem with flanges is that the existing exhaust is a NA one so i cant use the flanges on that and i'm not buying a td5 system just for the flanges! Will- once i have bought a silencer for £30 then had it delivered then bent up and welded the pipe to it and made a tailpeice it seems easier to just buy a td5 one readymade it should save time too- you know thus reducing build time Quote Link to comment Share on other sites More sharing options...
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