Author Topic: New cb400f exhaust came in from Japan--pictures  (Read 11119 times)

0 Members and 1 Guest are viewing this topic.

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,079
  • CB500 Number 1000036
Re: New cb400f exhaust came in from Japan--pictures
« Reply #25 on: November 28, 2011, 10:37:12 PM »
Thats too heavy to just hang on the port studs, you need to fab up some sort of rear mount
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline Felix

  • Full Member
  • *
  • Posts: 74
Re: New cb400f exhaust came in from Japan--pictures
« Reply #26 on: November 29, 2011, 04:43:19 AM »
I emailed them as I was thinking of buying one. The more expensive one is hand bent and the cheaper one is machine bend. I have no idea the difference besides that.. I asked for pictures but they didn't send any.

Let's hope somebody could help us with this. ;D
Honda CB500F '72 in progress

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #27 on: November 29, 2011, 04:48:24 AM »
Thanks!  I haven't got my engine back together yet but it should be very soon.  I'll keep you all posted, don't worry!

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #28 on: November 29, 2011, 08:21:07 AM »
Thats too heavy to just hang on the port studs, you need to fab up some sort of rear mount

I was a bit worried about that, but why would they manufacture the pipes without a mounting tab???  Since the pipe is chromed, welding one on would make a mess I would think...  Maybe I can use some sort of hanger strap.  This exhaust is a good 7lbs lighter than the stock pipes, though.  But I agree I may be asking for trouble.  The OMT pipes that look just like these have a mounting tab for the rear, and they probably weigh about the same.

Offline crazypj

  • I'm brill, me
  • Old Timer
  • ******
  • Posts: 4,467
  • first 100,000 miles. 1977 CB550F
Re: New cb400f exhaust came in from Japan--pictures
« Reply #29 on: November 29, 2011, 08:53:33 AM »
Real nice, loks like a Yoshi.
Probably going to need pretty big main jets with the new baffle?
Your going to need a rear mount, the pipes will crack ahead of collector without one.
It will need to be able to flex very slightly though
I fake being smart pretty good
'you can take my word for it or argue until you find out I'm right'

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #30 on: November 29, 2011, 10:00:12 AM »
Ideas for the rear mount? 

I'm running 95's now, but may need to go bigger.   Carbs are bored as well, and porting is being done as we speak...  I'll start with the 95's though and go from there...

Offline Kanticoy

  • Enthusiast
  • **
  • Posts: 176
  • Mad Science!
Re: New cb400f exhaust came in from Japan--pictures
« Reply #31 on: November 29, 2011, 09:41:12 PM »
Something like this would work a treat if you can find one in the right size Jesse....

http://www.motorcycle-superstore.com/3/13/118/29150/ITEM/Samson-Universal-Heavy-Duty-Exhaust-Clamps.aspx?WT.ac=SLIsearch

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,079
  • CB500 Number 1000036
Re: New cb400f exhaust came in from Japan--pictures
« Reply #32 on: November 29, 2011, 11:11:27 PM »
Just get some lightweight flat bar/steel strap, stainless if available, and bend it arround the back end so that you can bolt a straight piece between the clamp and the frame somewher (top shock mount?)
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #33 on: November 30, 2011, 07:31:40 AM »
Thanks for the link!  Did you happen to get my PM about the Race Tech set up?

Something like this would work a treat if you can find one in the right size Jesse....

http://www.motorcycle-superstore.com/3/13/118/29150/ITEM/Samson-Universal-Heavy-Duty-Exhaust-Clamps.aspx?WT.ac=SLIsearch

Offline Kanticoy

  • Enthusiast
  • **
  • Posts: 176
  • Mad Science!
Re: New cb400f exhaust came in from Japan--pictures
« Reply #34 on: November 30, 2011, 07:34:03 AM »
I did man!  I'll PM you the numbers. 

Offline crazypj

  • I'm brill, me
  • Old Timer
  • ******
  • Posts: 4,467
  • first 100,000 miles. 1977 CB550F
Re: New cb400f exhaust came in from Japan--pictures
« Reply #35 on: November 30, 2011, 07:47:28 AM »
Take a look at modern sport bike exhaust hangers.
 They use a high temp silicon 'damper' and slotted stainless steel band clamp.
 You should be able to mount to original bracket or rear of frame?
I fake being smart pretty good
'you can take my word for it or argue until you find out I'm right'

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #36 on: November 30, 2011, 08:07:02 AM »
Awesome.  Thanks, all!  I'll make it work--the original bracket is still there, I'll just need to find the right strap.

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,577
  • Big ideas....
Re: New cb400f exhaust came in from Japan--pictures
« Reply #37 on: November 30, 2011, 08:45:39 AM »
Awesome.  Thanks, all!  I'll make it work--the original bracket is still there, I'll just need to find the right strap.
What is the OD of the pipe? I have some old Yosh and Hindle clamps.
Owner of the "Million Dollar CB"

Offline jessezm

  • '77 cb400f cafe build
  • Expert
  • ****
  • Posts: 1,004
  • Always wrenching...
Re: New cb400f exhaust came in from Japan--pictures
« Reply #38 on: November 30, 2011, 09:07:11 AM »
That would be sweet if it works!  It's 2.75"

Awesome.  Thanks, all!  I'll make it work--the original bracket is still there, I'll just need to find the right strap.
What is the OD of the pipe? I have some old Yosh and Hindle clamps.