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Author Topic: CB400 BHP  (Read 13636 times)

Offline Andy1976

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CB400 BHP
« on: June 25, 2009, 09:38:50 AM »
Hi all, does anyone know the bhp for the 400/4? My wife is doing her bike test but when she passes she's restricted to 33bhp for 2yrs.
We're looking for her next bike snd she likes the 400.

Cheers
Andy.
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Offline SteveD CB500K0

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Re: CB400 BHP
« Reply #1 on: June 25, 2009, 09:57:39 AM »
It was 37bhp (Din) at 8500 revs.

I recall someone else asking this a while ago - I think they went to a dealer/mechanic and got a letter stating that a 30+ year old bike would no longer make anything like the manufacturers claimed output at the time of sale!

Try it - you never know.
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Offline fat lad

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Re: CB400 BHP
« Reply #2 on: July 15, 2009, 09:30:34 PM »
Hi i got mine put on a dyno
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Offline Sprunghub

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Re: CB400 BHP
« Reply #3 on: August 29, 2009, 07:00:49 PM »
I've got a CB1 - American version.......apparently it's 55.2HP......but I'm guessing you don't mean this version of the 'popular mid-size engine'  ;D ;D ;D

It goes fast, fast.... :o

Nigel ::)
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Offline andy120t

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Re: CB400 BHP
« Reply #4 on: December 12, 2009, 10:54:02 AM »
I was reading an old Classic Bike the other night which stated that so long as you had the dyno chart proving your output was below the limit then you were OK.

They specifically mentioned the 400/4 as one of the bikes that would be appropriate to use on that type of licence.

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Offline ianmck

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Re: CB400 BHP
« Reply #5 on: December 13, 2009, 08:37:24 PM »
I have the same situation with my wife, how do you stand with insurance companies, and with the law, if she was to be stopped, would a dyno printout be accepted by an insurance company, and in a court of law ?
Regards ianmck.
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1977 400/4 supersport.   1973 cb750 K4,

Offline Yoshi823

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Re: CB400 BHP
« Reply #6 on: December 13, 2009, 09:37:23 PM »


If you look carefully it does say 37bhp.I would think that Honda UK would be contacted in the case of any court case and a similar page produced as evidence.

There are restrictor kits available to reduce down to 33bhp which then come with a certificate guaranteeing this.
« Last Edit: December 13, 2009, 09:42:21 PM by Yoshi823 »
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Offline ianmck

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Re: CB400 BHP
« Reply #7 on: December 14, 2009, 06:44:10 PM »
sounds ok, any idea who supplies a restrictor kit for the 400/4
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1977 400/4 supersport.   1973 cb750 K4,

Offline Yoshi823

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Re: CB400 BHP
« Reply #8 on: December 14, 2009, 10:32:41 PM »
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Bikes...they're in the blood.
Yamaha R1 2001
Yamaha FZR1000R EXUP 1990
KTM 450 EXC RFS 2004
Honda XR400R 1997
Honda CB125T2 1980
Yamaha FJ1200 3XW 1991

Offline andy120t

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Re: CB400 BHP
« Reply #9 on: December 15, 2009, 02:59:00 PM »
Given that it's an old bike and probably sub-33bhp already, you might ask them to guarantee it makes 33bhp with the restrictor kit! :)
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andy120t

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