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Blackwolf141
New Member
United Kingdom
1 Posts |
 Posted - 02/03/2008 : 20:39:36
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How much Power does a CB400 SF put out? (1993 model) this is with out the Jap restricter, is it 54? or more around 60 odd?
cheers
Wolf |
'Nutty as squirrel *Censored*' |
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rich_miller86
Senior Member
United Kingdom
1453 Posts |
Posted - 02/03/2008 : 21:03:43
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| around 50 standard if i remember, think mine was 53 with k&n and ART can |
Suzuki GSXR750 SRAD - North Wales |
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duffa0305
Settled In Member
United Kingdom
165 Posts |
Posted - 04/03/2008 : 20:01:31
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i managed 45 bhp on the dyno last year and that was with knacked sprockets and chain.... |
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duffa0305
Settled In Member
United Kingdom
165 Posts |
Posted - 04/03/2008 : 20:02:01
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| sorry that was on my cb1 |
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a_morti
Senior Member
United Kingdom
1344 Posts |
Posted - 04/03/2008 : 22:34:12
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| 45? I would have been pretty upset with that. The cb-1 is meant to make a few more hosepower than the SF as with the gear cam train it revs higher, and the carbs are "proper" downdraft ones. |
WWW.HONDACB1.CO.NR
+ NC29 swingarm ('29 wheels soon), Quill T3 Ti, lots of black, blade rear hangers, beet rearsets, brembo brake. Top mods: BT45's, touring screen & rack with 50L box! Stolen recovered, scumbags best not try again. |
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houdini
Familiar Member
Ireland
236 Posts |
Posted - 06/03/2008 : 08:09:39
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| my 97 super four is putting out 58 hp should be putting out 60/62 with a tune since i got 4 into one headders |
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gothy
Settled In Member
United Kingdom
52 Posts |
Posted - 07/03/2008 : 23:09:44
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what does it make with the japanese restrictor box?
has anyone done that on this bike?
i want/need more speed. |
Honda CB400SF 1995. |
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AlanH
Senior Member
United Kingdom
1040 Posts |
Posted - 08/03/2008 : 11:26:37
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The restrictor is not a power restriction as such, it restricts top speed. When you get to 112mph, it cuts the sparks on two cylinders. Up to that point you are getting full power which is anything between 40 and 60 bhp according to how optimistic the dyno is.
If you really want to go more than 112mph, do a search for "restriction resistor". You should find some useful info. |
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gothy
Settled In Member
United Kingdom
52 Posts |
Posted - 08/03/2008 : 13:59:01
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ok I've done a bit of research, and I have concluded;
I cannot find anything about restriction for the cb400sf.
but, i have found it for other 400 jap honda's.
Essentially you bend the tab away from the cam in the speedometer, so it cannot make a circuit back to the cdi unit.
However some people say their is a resistor joining the two wires already? essentially already joining the two wires in the circuit?
maybe the cdi can measure the resistance of the circuit when not connected as it will give a weak reading, then when the cam and tab are connected it would have less resistance!
some people say to fit another resistor of 2.2 K ohms into the circuit, and if i am right about the cdi having a ohm-meter it would prevent the current flow and would have a high ammount of resistance!
however if done incorrectly like cutting the wire it will misfire at 5500 RPM. - this im not sure about. |
Honda CB400SF 1995. |
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gothy
Settled In Member
United Kingdom
52 Posts |
Posted - 08/03/2008 : 17:45:55
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they ARE restricted!
hey everyone with a CB400 they are restricted, they CAN go faster.
how to do it,
get a mph converter - this will cure it instantly.
or much cheaper, i need to find out from the guys on the cbr400rr bit yet, what wires to solder together with a resistor. and unplug the block on the back of the speedo. |
Honda CB400SF 1995. |
Edited by - gothy on 08/03/2008 17:48:42 |
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SHimmer45
Regular Member
United Kingdom
617 Posts |
Posted - 08/03/2008 : 18:40:02
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some ppl like style over speed :)
anyway keeping a 400 up around the 90-100 mark is bloody hard work and is missing the point slightly. |
1991 Yamaha XJ900 its NOT a diversion!!
1989 Kawasaki KR1-S Project
***Hankering after another "Screamer"***
www.kr-1s.co.uk
The NEW place for the Kawasaki KR1 series and KR250 |
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superfourben
Regular Member
United Kingdom
505 Posts |
Posted - 09/03/2008 : 01:05:15
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| They are restricted to 180Kph, a simple resistor in the back of the speedo cuts it out. Do a search and eventually you will find a thread about this.... however, chances of getting the SF over the 180Kph mark may take a long runway! |
Good times! |
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Power..
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