CBF1000

CBF1000 => Exhaust System => Topic started by: alexibrow on 23 October, 2016, 10:31:55 AM

Title: Mk2 headers on Mk1
Post by: alexibrow on 23 October, 2016, 10:31:55 AM
Before anyone asks, I've searched the forum and can't find an answer to this question:
Has anyone successfully fitted Mk2 headers to a Mk1? If so, did they fit without modification or was some fettling involved?
I've read DeeCat's thread about blanking off the LH collector outlet, but I'm interested in going single sided using a bolt-on approach.
Thanks in advance.

 

Title: Re: Mk2 headers on Mk1
Post by: Bifferman on 23 October, 2016, 10:47:35 AM
Interesting question and I don't recall seeing a question of this nature either (richardcbf, the King of Search, will no doubt prove us both wrong :164:).  Does rather beg the question why you would want to do this other than IMO the twin zorsts are aesthetically pleasing and the stock MKII thing is a monstrosity.  I don't understand enough about the mechanics of exhausts but it does occur that there may be more to a change back, even if it is possible, fueling, or other bits that may physically get in the way on a MKII that aren't there on the MKI i.e. different design of the centre stand, n/s exhaust hanger plate most likely to be different etc.

Look on Fowlers Honda Parts website and you will find goo exploded diagrams of all MKI and MKII parts with the genuine Honda part numbers on them which may help you.  (Lings Honda parts also have the schematics but you have to jiggle with the URL to see the Honda part codes - and I can't remember now what the jiggle is).

You could also ask Honda, consumer mucha of your time, service - but based on previous experience I wouldn't be holding my breath there if I were you.  Probably better to download both MKI and MKII Honda Service manuals and look at the exploded diagrams there, at least it will give you a heads up and maybe some specific questions to ask of Honda.

Andy
 :149:
Title: Re: Mk2 headers on Mk1
Post by: alexibrow on 23 October, 2016, 10:34:34 PM
There's a couple of good reasons to go single sided:
1) Weight saving.
2) Reduced cost of upgrading exhaust silencers; two decent aftermarket noisy cans for the Mk1 is going to sting me for the best part of 400.
3) Now I come to think of it, it would make it easier to clean the dirtier nearside of the bike too.

 

Title: Re: Mk2 headers on Mk1
Post by: alexibrow on 23 October, 2016, 10:38:03 PM
Basically, I need to know if the critical interfaces are the same on each bike, ie will the headers physically fit onto the cylinder head, and then clear the frame (which is different). The advantage of using a header that's designed to use a single exhaust is that the gas flow has already been accounted for, I don't have the knowledge to modify the twin exit headers.

 

Title: Re: Mk2 headers on Mk1
Post by: Eddieman234 on 14 June, 2020, 08:53:37 PM
Hi new to the forum just wondering if anyone found out if the mk2 headers fit the mk1 thanks
Title: Re: Mk2 headers on Mk1
Post by: Careca on 15 June, 2020, 02:11:42 PM
Im just thinking aloud..............given the bike has a de tuned 2006 Fireblade engine would a Fireblade exhaust  system fit/work ?
Title: Re: Mk2 headers on Mk1
Post by: NeiljohnUK on 18 November, 2020, 11:18:36 AM
*Originally Posted by alexibrow [+]
Before anyone asks, I've searched the forum and can't find an answer to this question:
Has anyone successfully fitted Mk2 headers to a Mk1? If so, did they fit without modification or was some fettling involved?
I've read DeeCat's thread about blanking off the LH collector outlet, but I'm interested in going single sided using a bolt-on approach.
Thanks in advance.

So did you do it? My Mk1 downpipes have split and she's just failed the MoT due to 'excessive exhaust leakage' as a result, so I'm now looking at changing the whole system, as Mk1 exhausts are impossible to find good used, except from breakers in eastern Europe...
Title: Re: Mk2 headers on Mk1
Post by: NeiljohnUK on 21 November, 2020, 08:04:25 PM
*Originally Posted by NeiljohnUK [+]
So did you do it? My Mk1 downpipes have split and she's just failed the MoT due to 'excessive exhaust leakage' as a result, so I'm now looking at changing the whole system, as Mk1 exhausts are impossible to find good used, except from breakers in eastern Europe...

Well it's possible, Mk2 on to Mk1 now done, mainstand has to come off, the springs are in the way, and the lambda sensor cable is too short with the wrong plug, extend with original sensors cable.
Title: Re: Mk2 headers on Mk1
Post by: NeiljohnUK on 21 November, 2020, 08:04:55 PM
Side view.
Title: Re: Mk2 headers on Mk1
Post by: Art on 28 November, 2020, 07:30:11 PM
*Originally Posted by NeiljohnUK [+]
Well it's possible, Mk2 on to Mk1 now done, mainstand has to come off, the springs are in the way, and the lambda sensor cable is too short with the wrong plug, extend with original sensors cable.

Except you forgot to mention

*Originally Posted by NeiljohnUK [+]
...the lambda sensor thread sizes are different....