« previous next »
Pages: [1]   Go Down

Author Topic: CB400f headers. Anyone know which ones these are?  (Read 1340 times)

0 Members and 1 Guest are viewing this topic.

Offline kart74

  • Full Member
  • *
  • Posts: 33
CB400f headers. Anyone know which ones these are?
« on: May 17, 2012, 06:24:01 PM »
Looking to find out what kind of headers these are. they came on my 1975 CB400f. I am also looking for ways to maybe change the baffle to make it a bit louder? It is pretty quiet as is. I drilled out the rivet and tried bouncing the muffler on a rubber mat, but it didnt move. Any thoughts or help would be great. Thanks.
Logged

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,934
  • Central Texas
Re: CB400f headers. Anyone know which ones these are?
« Reply #1 on: May 17, 2012, 06:29:31 PM »
The muffler kinda looks like a Mac. Is the baffle removable?
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: CB400f headers. Anyone know which ones these are?
« Reply #2 on: May 17, 2012, 07:08:08 PM »
 Jardine,grab the baffle with a Vise-Grip if you can and hit that with a hammer..may work.
I was trying to pull a baffle from a mystery header and NOTHING worked..
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline kart74

  • Full Member
  • *
  • Posts: 33
Re: CB400f headers. Anyone know which ones these are?
« Reply #3 on: May 18, 2012, 02:13:30 PM »
it seems like it is removable. I would think that if it wasnt there would not be a rivet. The muffler has the header collector built on. So pushing something through is not really an option. Does anyone know if the older MAC stuff was built that way? It looks like the MAC stuff now has the collector seperate or as part of the headers.
Logged

Offline kart74

  • Full Member
  • *
  • Posts: 33
Re: CB400f headers. Anyone know which ones these are?
« Reply #4 on: May 18, 2012, 05:18:57 PM »
After looking at some more pictures of the MAC systems i dont think this is a MAC. Any one have any ideas?
Logged

Offline Sparked

  • Hot Shot
  • ***
  • Posts: 269
  • Cheaper then therapy
Re: CB400f headers. Anyone know which ones these are?
« Reply #5 on: May 18, 2012, 06:06:33 PM »
I think 754 was right with them being Jardene. I have a set of 4-2 with the same looking mufflers that I was told are Jardene.

Sent from my Atari
Logged
1972 CB350F
1982 CM450A
1961 Ford Falcon (time for four wheels)

Offline kart74

  • Full Member
  • *
  • Posts: 33
Re: CB400f headers. Anyone know which ones these are?
« Reply #6 on: May 19, 2012, 07:07:47 AM »
Ok sorry i missed that. I had never heard of them. It looks like they no longer make anything for the older bikes :( I am going to check into having somrthing built for the muffler. Are these headers any good?
Logged

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,934
  • Central Texas
Re: CB400f headers. Anyone know which ones these are?
« Reply #7 on: May 19, 2012, 07:35:56 AM »
They are good, but the stock 400F is the sexiest stock header out there. I would be shopping for one of them...
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline kart74

  • Full Member
  • *
  • Posts: 33
Re: CB400f headers. Anyone know which ones these are?
« Reply #8 on: May 28, 2012, 03:13:50 PM »
I got the baffle out! I was able to get a pipe through the collector side and hit it out. It had 3 baffle sections inside. I removed one of them and love it. Not too loud at idle or cruise but it really comes alive when you get on it. I am now working on getting the jetting dialed in. It has stock jets in it right now which are too lean. Do you think if i go up one size on both jets that would be good? to a 78 main and a 42 pilot?
Logged

Online Tim2005

  • Expert
  • ****
  • Posts: 1,453
Re: CB400f headers. Anyone know which ones these are?
« Reply #9 on: May 28, 2012, 03:34:54 PM »
I'd try just upping the main first, in my experience 400f's never need a larger pilot than stock
Logged
Pages: [1]   Go Up
« previous next »