
Congratulations to vtecmec for winning May/June's Lude Of The Month, with his DIY Turbo BB1 build.
>>> Click Here For Profile <<<

>>> Click Here For Profile <<<

H22 JDM 4th gen stainless manifold and downpipe
- bristol_bb4
- LotM Winner
- Posts: 3369
- Joined: Mon Oct 10, 2011 2:19 pm
- My Generation: 4G
- NafemanNathan
- LotM Winner
- Posts: 20144
- Joined: Sun Aug 08, 2010 9:37 pm
- My Generation: 0G
- Location: Yeovil, Somerset
- Has thanked: 8 times
- Been thanked: 124 times
Merlin wrote:On my 4th I have a Fujitsubo mani (JDM), UKDM decat, and UKDM cat-back. As a result my exhaust pokes out a little too long. If I were to replace the UK decat with a smaller JDM decat (Im about to) then my exhuast will fit properly. This is only possible if the manifolds & downpipes are the same for both UK & JDM. The size of the different CAT's must be made up in the center section.

- NafemanNathan
- LotM Winner
- Posts: 20144
- Joined: Sun Aug 08, 2010 9:37 pm
- My Generation: 0G
- Location: Yeovil, Somerset
- Has thanked: 8 times
- Been thanked: 124 times
You're on about where the primaries collect into two and then connects with the downpipe aren't you? Probably wise to always buy a mainfold/downpipe combo bud... Especially when it comes to custom/aftermarket.bristol_bb4 wrote:what do you mean mate?grant_day wrote:What about the two bores on the JDM anFd ukdm downpipes? The jdm ones are further apart..
- bristol_bb4
- LotM Winner
- Posts: 3369
- Joined: Mon Oct 10, 2011 2:19 pm
- My Generation: 4G
yeh i thought thats what he meant, deffo dont buy them as separate pieces, thats just asking for troubleNafemanNathan wrote:You're on about where the primaries collect into two and then connects with the downpipe aren't you? Probably wise to always buy a mainfold/downpipe combo bud... Especially when it comes to custom/aftermarket.bristol_bb4 wrote:what do you mean mate?grant_day wrote:What about the two bores on the JDM anFd ukdm downpipes? The jdm ones are further apart..

- Merlin
- Moderator
- Posts: 12393
- Joined: Fri Aug 06, 2010 9:04 am
- My Generation: 5G
- PSN GamerTag: Merlinbadman
- Location: Edinburgh
- Has thanked: 68 times
- Been thanked: 303 times
TBH I dont know what im saying now (im hungover) it seemed correct in my head as I was typingNafemanNathan wrote:Merlin wrote:On my 4th I have a Fujitsubo mani (JDM), UKDM decat, and UKDM cat-back. As a result my exhaust pokes out a little too long. If I were to replace the UK decat with a smaller JDM decat (Im about to) then my exhuast will fit properly. This is only possible if the manifolds & downpipes are the same for both UK & JDM. The size of the different CAT's must be made up in the center section.
So you're saying that you need to run a JDM cat because you're running a JDM downpipe, and then you can run a UKDM catback? And obviously you can run a UKDM downpipe with UKDM cat with a UKDM cat back, so this tells you that the whole catback exhaust (from the centre section to the backbox) between JDM and UKDM is the same length surely?!!!



My issue is length, using the UKDM decat results in the whole system being too long.
JDM manifold and down pipe
JDM or UKDM decat
Ebay Japspeed exhaust
- bristol_bb4
- LotM Winner
- Posts: 3369
- Joined: Mon Oct 10, 2011 2:19 pm
- My Generation: 4G
- NafemanNathan
- LotM Winner
- Posts: 20144
- Joined: Sun Aug 08, 2010 9:37 pm
- My Generation: 0G
- Location: Yeovil, Somerset
- Has thanked: 8 times
- Been thanked: 124 times
RICH OF PAW, I SUMMON YOU!!!
Last edited by NafemanNathan on Mon May 14, 2012 1:55 pm, edited 1 time in total.
- indigolemon
- The Chaos Engine
- Posts: 6680
- Joined: Wed Jun 30, 2010 1:45 pm
- My Generation: 4G
- PSN GamerTag: M149YSL
- Location: Kelty, Fife
- Has thanked: 24 times
- Been thanked: 71 times
- Contact:
bristol_bb4 wrote:yeh i thought thats what he meant, deffo dont buy them as separate pieces, thats just asking for troubleNafemanNathan wrote:You're on about where the primaries collect into two and then connects with the downpipe aren't you? Probably wise to always buy a mainfold/downpipe combo bud... Especially when it comes to custom/aftermarket.bristol_bb4 wrote:what do you mean mate?grant_day wrote:What about the two bores on the JDM anFd ukdm downpipes? The jdm ones are further apart..
Exactly what I meant.bristol_bb4 wrote:yeh i thought thats what he meant, deffo dont buy them as separate pieces, thats just asking for troubleNafemanNathan wrote:You're on about where the primaries collect into two and then connects with the downpipe aren't you? Probably wise to always buy a mainfold/downpipe combo bud... Especially when it comes to custom/aftermarket.bristol_bb4 wrote:what do you mean mate?grant_day wrote:What about the two bores on the JDM anFd ukdm downpipes? The jdm ones are further apart..
Cheers
