4-2-1 manifold

1. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

   #1 20th August 2008, 13:40

   I dont know what all the names are for the parts so if this sound wrong dont have a go.
   
   iv just found a hole by the catalyst converter near the senser on the down pipe of my exhaust so i was thinking would it be cheaper to get a 4-2-1 manifold fitted then to by a standed one, being that it will need a new cat cos its in the manifold?
   
   if i did get a 4-2-1 monifold would it fail on the emission test for the MOT because that would mean that i would only have 1 silencer on the car.
   
   any help would be us full.
2. WelshyUK Established Member Joined: Apr 2008 Northampton Posts: 1386 MK4Golf1.6SE,BMWE30Sport, KDX125,FZR400RRSP1

   #2 20th August 2008, 14:00

   It wouldn't fail for definate some saxo have been known to go through, although it should fail the emmisions test. You could put on a mk1 exhaust and have the cat underneath the car instead of on the manifold!
3. MikeReay89 Infrequent Poster Joined: Jun 2008 Posts: 140 MK2 VTR

   #3 20th August 2008, 14:00

   Yes would prob be cheaper to fit 4-2-1. But you would need to put cat back on for the MOT. Definatly worth it though
4. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

   #4 20th August 2008, 14:02

   so should i get the 4-2-1 but put the cat under the car in the center pipe?
5. lcheater Frequent Poster Joined: Jul 2005 Southampton United Kingdom (England) Posts: 811 1999 Saxo VTS 2008 Vectra 2.8 V6 Turbo 1987 Rang

   #5 20th August 2008, 14:03

   Quote:

   Originally Posted by thunter18 I dont know what all the names are for the parts so if this sound wrong dont have a go. iv just found a hole by the catalyst converter near the senser on the down pipe of my exhaust so i was thinking would it be cheaper to get a 4-2-1 manifold fitted then to by a standed one, being that it will need a new cat cos its in the manifold? if i did get a 4-2-1 monifold would it fail on the emission test for the MOT because that would mean that i would only have 1 silencer on the car. any help would be us full.

   4 branch manifolds are around the £200 mark I believe, and a replacement CAT is £33 (if your car has the CAT near the manifold, which by your description it does). So, a replacement CAT would be cheaper and also mean it would still go through the MOT.
6. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

   #6 20th August 2008, 14:04

   Quote:

   Originally Posted by lcheater 4 branch manifolds are around the £200 mark I believe, and a replacement CAT is £33 (if your car has the CAT near the manifold, which by your description it does). So, a replacement CAT would be cheaper and also mean it would still go through the MOT.

   how much am i looking to pay for a standed manifold with the cat in it?
7. lcheater Frequent Poster Joined: Jul 2005 Southampton United Kingdom (England) Posts: 811 1999 Saxo VTS 2008 Vectra 2.8 V6 Turbo 1987 Rang

   #7 20th August 2008, 14:08

   Quote:

   Originally Posted by thunter18 so should i get the 4-2-1 but put the cat under the car in the center pipe?

   That seems to be an option (although I am not an expert). However, as I previously said, the cheapest option is to replace the existing CAT, and then you guarantee the emissions will be OK for the MOT
   
   If you have the money, the best option would be to use the Mk1 exhaust which has the cat under the car, and fit a 4 branch manifold. If you fit the CAT with exhaust flanges you could unbolt it after the MOT and replace it with a length of straight through pipe. Then you would have a straight through system all year round and be still be able to make it legal for the MOT. Your choice, but that’s the most expensive option.
8. lcheater Frequent Poster Joined: Jul 2005 Southampton United Kingdom (England) Posts: 811 1999 Saxo VTS 2008 Vectra 2.8 V6 Turbo 1987 Rang

   #8 20th August 2008, 14:11

   Quote:

   Originally Posted by thunter18 how much am i looking to pay for a standed manifold with the cat in it?

   After re-reading your original post, it sounds like you have got a hole in the manifold rather than in the cat (or the pipework directly connected to the cat). I don’t know how much a standard manifold would be, but I am pretty sure the manifold and CAT is not one piece – I am sure they join, so you would only need to replace the piece which has the hole in it.
9. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

   #9 20th August 2008, 14:16

   kl thanks to every one i got a rought idea of what im going to need to do thanks
10. Kano Infrequent Poster Joined: Sep 2007 Telford Posts: 134 Citroen Saxo VTS

    #10 20th August 2008, 14:38

    If your interested iv got prices for you;
    
    genuine manifold - 92.54+vat
    
    genuine cat - 1'703.07+vat
    
    Personally id go for a 4-2-1 mate!
11. lcheater Frequent Poster Joined: Jul 2005 Southampton United Kingdom (England) Posts: 811 1999 Saxo VTS 2008 Vectra 2.8 V6 Turbo 1987 Rang

    #11 20th August 2008, 14:47

    Quote:

    Originally Posted by Kano If your interested iv got prices for you; genuine manifold - 92.54+vat genuine cat - 1'703.07+vat Personally id go for a 4-2-1 mate!

    £1703.07 + VAT for a CAT!? That’s £2001.11 including VAT! Would anyone ever pay that for a CAT? Check out www.cats2go.co.uk – may not be genuine but only £33 for the manifold one, and £55 for the under car one. Can’t believe that figure!!! Shocking!
12. Nick_T Saxperience Forum Bum Joined: Jul 2006 Bristol Posts: 2784 8valve tbh

    #12 20th August 2008, 14:52

    Quote:

    Originally Posted by Kano If your interested iv got prices for you; genuine manifold - 92.54+vat genuine cat - 1'703.07+vat Personally id go for a 4-2-1 mate!

    £1703??
    Shouldn't have thought so
    http://www.onlineautomotive.co.uk/
    
    £61.83
13. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

    #13 20th August 2008, 15:10

    Quote:

    Originally Posted by Nick_T £1703?? Shouldn't have thought so http://www.onlineautomotive.co.uk/ £61.83

    thanks found what i need only £53 bargin
14. lcheater Frequent Poster Joined: Jul 2005 Southampton United Kingdom (England) Posts: 811 1999 Saxo VTS 2008 Vectra 2.8 V6 Turbo 1987 Rang

    #14 20th August 2008, 15:45

    Quote:

    Originally Posted by thunter18 thanks found what i need only £53 bargin

    Where did you source it from?
15. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

    #15 20th August 2008, 15:58

    Quote:

    Originally Posted by lcheater Where did you source it from?

    http://www.onlineautomotive.co.uk/
16. Georgel Regular Poster Joined: Jan 2008 Posts: 344 Saxo Vts -QEP development fast road engine.

    #16 20th August 2008, 16:04

    Thats madness! I weighed a CAT in last month for £50.
    
    Go for a raceland manifold mate.
17. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #17 20th August 2008, 19:37

    what ever you go for dont go to longlife exausts!
    they wanted today £400 for a 4-2-1 manifold if the cat is in the pipe! and £1000 if the cat is in the manifold! and they need to keep the car for 3 days!
18. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

    #18 20th August 2008, 20:21

    Quote:

    Originally Posted by fordy_vtr what ever you go for dont go to longlife exausts! they wanted today £400 for a 4-2-1 manifold if the cat is in the pipe! and £1000 if the cat is in the manifold! and they need to keep the car for 3 days!

    wow ye def wont be going there
19. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #19 20th August 2008, 20:29

    What i am going to do is get a manifold for around £140! buy a new gasket for around £15 and fit it myself! it doesnt seen to be a hard job!
    the worst tha could happen as i can see is if ther manifold bolt snap u need a new head! and thas a bad job! so just use plenty of WD40!
20. tjbaker91 Frequent Poster Joined: Jun 2008 Aylesbury Posts: 587 Silver VTR

    #20 20th August 2008, 20:42

    get the manifold mate lol!
21. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #21 20th August 2008, 20:44

    does a good manifold add much bhp? or does it just help with acceleration?
22. thunter18 Frequent Poster Joined: Jun 2008 Dagnall Posts: 516 Polo G40

    #22 20th August 2008, 20:45

    i think it depens if you get 4-2-1 or 4-1 or somin like that
23. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #23 20th August 2008, 20:47

    the 4-2-1 i will get! is tha the best 1?
24. Georgel Regular Poster Joined: Jan 2008 Posts: 344 Saxo Vts -QEP development fast road engine.

    #24 20th August 2008, 21:45

    Just get the raceland mate. Its the best pound for pound by far. And if should lift power and torque all the way through the rev range too.
25. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #25 20th August 2008, 22:01

    awsome! thas wa i am after!
    
    how much are we talking?
26. Georgel Regular Poster Joined: Jan 2008 Posts: 344 Saxo Vts -QEP development fast road engine.

    #26 20th August 2008, 22:25

    Have a look at Kam Racings website.
27. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #27 20th August 2008, 22:26

    aww yer i heard tha is a good site!
    
    cheers for the advice butt!
28. Georgel Regular Poster Joined: Jan 2008 Posts: 344 Saxo Vts -QEP development fast road engine.

    #28 20th August 2008, 22:36

    No problem mate. They also do offers for Sax-P. I'd take a look in their section on this forum.http://www.kamracing.co.uk/club-disc...v-saxo-47.html
29. fordy_vtr L-plater Joined: Jun 2008 Torfaen Posts: 62 Saxo vtr, Saxo 1.1i

    #29 20th August 2008, 22:45

    bloody hell thas £20 cheaper for just being a member!
    
    cheers mate!
    
    il give u rep!
30. Georgel Regular Poster Joined: Jan 2008 Posts: 344 Saxo Vts -QEP development fast road engine.

    #30 21st August 2008, 09:45

    No worries mate, thanks alot.
31. budgieboy911 Newbie Joined: Aug 2008 YORKSHIREEEEE Posts: 27 SAXO VTR

    #31 23rd August 2008, 02:06

    £120!! so what its a 10er to become a member which would make it 130... so im stil saving a tenner. consider it done matey