Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: robnobrakes on September 14, 2014, 01:35:08 AM

Title: 400/4 F1 Cafe Racer Project - New Exhaust System - VIDEO WITH SOUND ADDED
Post by: robnobrakes on September 14, 2014, 01:35:08 AM

Mizuno Motor (copycat Yoshi) Short Exhaust System now fitted to my '77 CB400/4, replacing a 1970s Yoshimura 'Long' system.

(http://img.photobucket.com/albums/v38/robnobrakes/P1030392a_zpsfdbdffff.jpg) (http://smg.photobucket.com/user/robnobrakes/media/P1030392a_zpsfdbdffff.jpg.html)
(http://img.photobucket.com/albums/v38/robnobrakes/P1030388a_zpsf965b8c6.jpg) (http://smg.photobucket.com/user/robnobrakes/media/P1030388a_zpsf965b8c6.jpg.html)
(http://img.photobucket.com/albums/v38/robnobrakes/P1030389_zpsae7958d4.jpg) (http://smg.photobucket.com/user/robnobrakes/media/P1030389_zpsae7958d4.jpg.html)
(http://img.photobucket.com/albums/v38/robnobrakes/P1030391_zps50911c38.jpg) (http://smg.photobucket.com/user/robnobrakes/media/P1030391_zps50911c38.jpg.html)

Removed Yoshi Long system

(http://img.photobucket.com/albums/v38/robnobrakes/IMG_3658_zpsf1269f92.jpg) (http://smg.photobucket.com/user/robnobrakes/media/IMG_3658_zpsf1269f92.jpg.html)

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System
Post by: Trigger on September 14, 2014, 01:31:23 PM

Very nice house you have. Must take some cleaning ;) The bike is nice. Is that brake disc safe?

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System
Post by: SteveD CB500K0 on September 14, 2014, 03:20:00 PM

Big house.

Big garden.

But does it have a garage?

That front disc is for trimming along the (left hand) edges of the lawns.

 8)

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System VIDEO WITH SOUND
Post by: robnobrakes on September 15, 2014, 04:58:55 PM

First link to open pipe (baffle removed, nice but too loud).  Second link to drilled end cap and baffle refitted.  The exhaust was too quiet with the baffle as supplied.

MVI 5376 (http://www.youtube.com/watch?v=PuBeSwVnFTU#)

https://www.youtube.com/watch?v=K_6TVQ5BwHs&feature=youtu.be (https://www.youtube.com/watch?v=K_6TVQ5BwHs&feature=youtu.be)

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System
Post by: robnobrakes on September 15, 2014, 05:03:12 PM

Quote from: Oddjob on September 14, 2014, 09:35:12 AM

I can see that getting clobbered by speed humps, nice pipe, shame about the design work that clearly hasn't gone into it.

Possibly, but this was designed by Yoshimura who are a quality outfit.  I can't remember if speed humps were about in the 1970's when the exhaust was first manufactured.  Next speed hump will be interesting.

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System
Post by: robnobrakes on September 15, 2014, 05:04:24 PM

Quote from: trigger6969 on September 14, 2014, 01:31:23 PM

Very nice house you have. Must take some cleaning ;) The bike is nice. Is that brake disc safe?

No issues with the front brake, so yes, it is safe.

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System
Post by: Norniron on September 15, 2014, 09:35:56 PM

Quote from: Oddjob on September 14, 2014, 09:35:12 AM

I can see that getting clobbered by speed humps, nice pipe, shame about the design work that clearly hasn't gone into it.

Just ride around or between them rob,and watch kerbs as well.(as if u need telling)

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System - VIDEO WITH SOUND ADDED
Post by: Bodd on September 15, 2014, 09:44:15 PM

Just wheelie it over the speed bumps if they are a problem  ;)

Edit:- Forgot to mention I think it looks and sounds great  8)

Title: Re: 400/4 F1 Cafe Racer Project - New Exhaust System - VIDEO WITH SOUND ADDED
Post by: Norniron on September 15, 2014, 09:50:09 PM

Ive no bother with mine