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+--- Thread: 3" Custom Downpipe - what did you buy, advice and critique required! (/showthread.php?tid=18536)
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3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 02-11-2013
Want to get the 205 moving along, need to make a downpipe for the GT2052V, what have people used?
Stainless or ordinary steel?
Obviously it'll be 3" 90 degree so heres a few I've found on eBay from a quick search:
Bend 1:
http://www.ebay.co.uk/itm/180726818044
![[Image: %24(KGrHqFHJDME-mK53dw+BPsht8TP,Q~~60_12.JPG]](http://i.ebayimg.com/t/76mm-3-OD-90-Degree-Stainless-Steel-Tube-Pipe-Mandrel-Bend-Hose-T304-/00/s/NDUwWDQ1MA==/%24(KGrHqFHJDME-mK53dw+BPsht8TP,Q~~60_12.JPG)
Bend 2:
http://www.ebay.co.uk/itm/111084566646
![[Image: %24T2eC16hHJIYE9qUcQY,UBQSG51OfVQ~~60_35.JPG]](http://i.ebayimg.com/t/76mm-3-90-degree-tight-1D-t304-stainless-exhaust-mandrel-bend-tube-pipe-bend-/00/s/MTY2WDEyNA==/%24T2eC16hHJIYE9qUcQY,UBQSG51OfVQ~~60_35.JPG)
Search results:
http://www.ebay.co.uk/sch/i.html?_from=R40&_sacat=0&_nkw=90+mandrel+bend+3%22&_sop=15
It'll then need some flexi pipe right so have people gone for 3" again straight after the bend then reduced down to 2.5" straight after the flexi?
is this flexi long enough or will I likely need a longer one with more "flex"?
3" Flexi x4":
http://www.ebay.co.uk/itm/121118351209
![[Image: %24T2eC16h,!wsE9suw0QCLBQJmS-izpQ~~60_12.JPG]](http://i.ebayimg.com/t/3-x-4-Inch-Exhaust-Flex-Tube-Joint-Flexi-Pipe-Repair-Flexipipe-76mm-x-100mm-/00/s/MzM0WDQwMA==/%24T2eC16h,!wsE9suw0QCLBQJmS-izpQ~~60_12.JPG)
3" Flexi x6":
http://www.ebay.co.uk/itm/181240997947
![[Image: %24T2eC16NHJGYFFk)ZGYmKBS(+B(S7Og~~60_12.JPG]](http://i.ebayimg.com/t/Exhaust-Flex-Tube-Join-Flexi-Repair-Flexipipe-Pipe-Joint-76mm-x-152mm-3-x-6-/00/s/MTIwMFgxNjAw/z/glUAAOxy-sRSX~BY/%24T2eC16NHJGYFFk)ZGYmKBS(+B(S7Og~~60_12.JPG)
Then I'll need some straight pipe and various bends but I can just get that fabricated at a garage or buy the appropriate bends off eBay / whatever once I have the downpipe all sorted.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - padge - 02-11-2013
im running a 3" downpipe, but my turbo is relocated so kinda have more room, ill be ordering one of those flexys today, as im going full 3" system, probs get the 4" one lol.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Ricky - 02-11-2013
I think I went 3" mandrel bend, cut as short as possible so it didn't hit the gear linkages, then a reducer to a 2.5" short flexi, to another cone reducer to 2.25" to attach to the leftover standard downpipe.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 02-11-2013
(02-11-2013, 01:43 PM)padge Wrote: im running a 3" downpipe, but my turbo is relocated so kinda have more room, ill be ordering one of those flexys today, as im going full 3" system, probs get the 4" one lol.
Mmm, not helpful!
(02-11-2013, 02:18 PM)Ricky Wrote: I think I went 3" mandrel bend, cut as short as possible so it didn't hit the gear linkages, then a reducer to a 2.5" short flexi, to another cone reducer to 2.25" to attach to the leftover standard downpipe.
You went from the 3" bend straight to a short reducer then to flexi?
Surely your better off having 3" for a slightly longer period or does it literally just matter for that inital 90* bend to help with the initial flow?
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - zx_volcane - 02-11-2013
2.5 will be fine
Running 2.5 turbo back on the gt22v which has been good for 200+
3 inch is just more likely to foul things
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Ricky - 02-11-2013
I was worried about space tbh.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 02-11-2013
(02-11-2013, 02:35 PM)zx_volcane Wrote: 2.5 will be fine
Running 2.5 turbo back on the gt22v which has been good for 200+
3 inch is just more likely to foul things
You have a 2.5" bend off the turbo? I always thought 3" was the ideal size, but it's just from reading with no actual evidence..!
(02-11-2013, 02:36 PM)Ricky Wrote: I was worried about space tbh.
It's going on my 205 so I should be worried about space too!
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - padge - 02-11-2013
my 3" downpipe clears linkages
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Ricky - 02-11-2013
I thought the 205 actually had more space behind the engine?
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - 306Puggy - 02-11-2013
FFS I've already make a thread about this! I am going for a 3" elbow into a reducer to 2.25 inches, it should be sufficient, it's not worth scrapping the rest of your 2.25 inch system for any performance gain you might have from a 2.5 inch system.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 02-11-2013
(02-11-2013, 03:32 PM)306Puggy Wrote: FFS I've already make a thread about this! I am going for a 3" elbow into a reducer to 2.25 inches, it should be sufficient, it's not worth scrapping the rest of your 2.25 inch system for any performance gain you might have from a 2.5 inch system.
Fairly certain the 205's exhaust goes as small as 1.75"-2" at points..
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - padge - 02-11-2013
standard xud pipe is 2" im sure?
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 02-11-2013
(02-11-2013, 03:36 PM)padge Wrote: standard xud pipe is 2" im sure?
I'm fairly certain its a 1.8D exhaust but then it wouldn't fit so might be a 1.8DT exhaust..
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - 306Puggy - 02-11-2013
I hope it's 2.25.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Tom - 02-11-2013
I need to do something with my exhaust :/
This is what i used for my 2.5" downpipe! http://www.ebay.co.uk/itm/Jetex-Universal-Exhaust-90-Degree-Welding-Bend-3-Mild-Steel-/290614647507?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a9fb9ad3
3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 03-11-2013
(02-11-2013, 07:06 PM)Tom Wrote: I need to do something with my exhaust :/
This is what i used for my 2.5" downpipe! http://www.ebay.co.uk/itm/Jetex-Universal-Exhaust-90-Degree-Welding-Bend-3-Mild-Steel-/290614647507?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a9fb9ad3
Did you then weld a bit of straight pipe then flexi after that 90!?
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Piggy - 03-11-2013
that tight bend is exactly what you need...
then a little bit of straight, then a 4" flexi.
then a 60degree bend I believe...or maybe its 45...have to check then I would drop to 2.5" as it makes the rest much cheaper
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Paul_13 - 03-11-2013
There is more room in a 205 bay!
you're right about the exhaust mate. Mines 2" and narrows right down before each box
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Diggers - 03-11-2013
3" downpipe
you can see how close it is the the linkages.
![[Image: 200012_10150460124275354_611805353_17878...9776_n.jpg]](http://s170.photobucket.com/user/diggerspug306/media/200012_10150460124275354_611805353_17878577_2989776_n.jpg.html)
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Dum-Dum - 03-11-2013
Mine isnt welded or fitted yet but it'll be a 3" v-band clamp into this
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Tom - 03-11-2013
(03-11-2013, 01:40 AM)silverzx Wrote:(02-11-2013, 07:06 PM)Tom Wrote: I need to do something with my exhaust :/
This is what i used for my 2.5" downpipe! http://www.ebay.co.uk/itm/Jetex-Universal-Exhaust-90-Degree-Welding-Bend-3-Mild-Steel-/290614647507?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a9fb9ad3
Did you then weld a bit of straight pipe then flexi after that 90!?
Yeah i welded a reducer onto that because i had a 2.25" system at the time! I THINK you might be able to get away with welding whatever angle you need at the bottom straight onto the flexi as long as it had some material each end of the bend if that make sense? So a bend like this: http://www.ebay.co.uk/itm/63mm-2-5-OD-45-Degree-Stainless-Steel-Exhaust-Polished-Pipe-Tube-Bend-/170871667469?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27c8bebb0d
As opposed to a short on like this: http://www.ebay.co.uk/itm/63mm-2-5-OD-45-Degree-Stainless-Steel-Tube-Pipe-Mandrel-Bend-Hose-T304-/170699412690?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27be7a54d2
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - darrenjlobb - 03-11-2013
(02-11-2013, 01:43 PM)padge Wrote: im running a 3" downpipe, but my turbo is relocated so kinda have more room, ill be ordering one of those flexys today, as im going full 3" system, probs get the 4" one lol.
Probs less room for downpipe with relocated turbo if im honest...And how is this relivant?
Other advice would be as said, use a mandrel short bent not long ones like in your links, as you will find they take up to much room / take you to far to one side out of the tunnel...And dont run the super short flexis, there so regid you may as well not bother, having a good flexi makes life SO much easier fitting exhaust etc, so well worth it.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Tom - 03-11-2013
I just found some cheap ass pipe too! Mill autos on trade, my local can get me 2meters of 2.5" for 8/9quid!
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - padge - 03-11-2013
kinda relevant as I said id be using a 4" flexy, as he asked which one would be best, just some input.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 04-11-2013
Going to get these:
3" 90 bend:
http://www.ebay.co.uk/itm/290614647507
3" x 8" flexi:
http://www.ebay.co.uk/itm/251207174096
Now I just need to know if its a 45 or 60 degree 3" bend I need before I go into a 3" > 2.5" reducer then 2.5" the rest of the way.
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - Paul_13 - 05-11-2013
That bend looks a bit Yeeehaaaa
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 05-11-2013
(05-11-2013, 06:57 AM)Paul_13 Wrote: That bend looks a bit Yeeehaaaa
Yeah, it's a bit small/tight/pikey but it seems to be the one to go for!!
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - darrenjlobb - 06-11-2013
(03-11-2013, 10:23 PM)Tom Wrote: I just found some cheap ass pipe too! Mill autos on trade, my local can get me 2meters of 2.5" for 8/9quid!
Really?
Do they keep it in stock in town?
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - silverzx - 06-11-2013
(06-11-2013, 09:18 AM)darrenjlobb Wrote:(03-11-2013, 10:23 PM)Tom Wrote: I just found some cheap ass pipe too! Mill autos on trade, my local can get me 2meters of 2.5" for 8/9quid!
Really?
Do they keep it in stock in town?
I'm definately popping to Mills when I get a chance to sneak away at work!
RE: 3" Custom Downpipe - what did you buy, advice and critique required! - zx_volcane - 06-11-2013
(06-11-2013, 09:20 AM)silverzx Wrote:(06-11-2013, 09:18 AM)darrenjlobb Wrote:(03-11-2013, 10:23 PM)Tom Wrote: I just found some cheap ass pipe too! Mill autos on trade, my local can get me 2meters of 2.5" for 8/9quid!
Really?
Do they keep it in stock in town?
I'm definately popping to Mills when I get a chance to sneak away at work!
That is cheap, assume not stainless but who cares at that price?