Help me with my wiring derestrictions!
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Help me with my wiring derestrictions!
Been stripping the bike today to check for restrictions that are making it top out at 110mph and iv came the the conclusion that it is a wiring issue, iv read the resistor derestriction sticky but am still confused as to what i actually have too do!
iv taken a few pictures of all the possible restrictors, just so i can have a second opinion and allthe wiring just to see if you lot can spot anything wrong? cheers!
no exhaust washers
no carb gasket washer plate thing?
not sure if this gap is effecting anything?
now all the wiring! iv taken pictures of everything even though i dont know what half of the things are lol
also can someone tell me what these raised holes are for? breathers im pressuming?
this ones the the rear top of the engine
any help please! thank you.
iv taken a few pictures of all the possible restrictors, just so i can have a second opinion and allthe wiring just to see if you lot can spot anything wrong? cheers!
no exhaust washers
no carb gasket washer plate thing?
not sure if this gap is effecting anything?
now all the wiring! iv taken pictures of everything even though i dont know what half of the things are lol
also can someone tell me what these raised holes are for? breathers im pressuming?
this ones the the rear top of the engine
any help please! thank you.
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- zxr400 oc member
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- Joined: Sat Jan 08, 2005 10:33 am
- My Bike: tomos moped
- Location: Carrickfergus Northern Ireland
Re: Help me with my wiring derestrictions!
so far I'm not seeing a SP
CV carbs so not SP flatsides
Yes that is a breather on top of the engine
it connects onto the bit of pipe on the airbox
There is at least one airbox bung missing so that you are drawing unflitered air
I would guess you also have other airbox sealing issues
the engine is flithy................suggesting a serious lack of maintainance
That looks like a UK unrestricted CDI box which would suggest that you do not have a factory restriction problem
however is it correctly matched the correct rotor ? assuming tht it really is a SP motor................something I very much doubt
CV carbs so not SP flatsides
Yes that is a breather on top of the engine
it connects onto the bit of pipe on the airbox
There is at least one airbox bung missing so that you are drawing unflitered air
I would guess you also have other airbox sealing issues
the engine is flithy................suggesting a serious lack of maintainance
That looks like a UK unrestricted CDI box which would suggest that you do not have a factory restriction problem
however is it correctly matched the correct rotor ? assuming tht it really is a SP motor................something I very much doubt
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
hmmm, well maybe an sp engine but normal carbs? i was shown the donor bike the sp motor came out of which was engineless when i purchased this one and also shown the blown up normal engine haha so im sure it is
okay so i should link the two holes together?
that doesnt 100% mean lack of maintenance, its a 20 year old bike that hasnt been cleaned very often, nott many people i know clean there engines at all
what is this airbox bung you mention? and i have no idea what a rotor is, like iv mentioned before i dont have a clue what im doing lets say its not an SP motor what advice canyyou give me for a normal motor?
okay so i should link the two holes together?
that doesnt 100% mean lack of maintenance, its a 20 year old bike that hasnt been cleaned very often, nott many people i know clean there engines at all
what is this airbox bung you mention? and i have no idea what a rotor is, like iv mentioned before i dont have a clue what im doing lets say its not an SP motor what advice canyyou give me for a normal motor?
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- zxr400 oc member
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- Location: Carrickfergus Northern Ireland
Re: Help me with my wiring derestrictions!
there are two access holes in the top of the airbox that allow for removal of two of the bolts that hold the airbox onto the carbs these holes should be blocked off with small rubber bungs.
This is very simple stuff I'm having to explain
The basic principles are the same no matter if you have a SP or regular L model engine.
The ignition pick up rotor is that device that trips the pick up and informs the CDI of where the crank is...............
Frankly given all that I've seen the man who sold you this bike had big windows cos he seen you coming.
This is very simple stuff I'm having to explain
The basic principles are the same no matter if you have a SP or regular L model engine.
The ignition pick up rotor is that device that trips the pick up and informs the CDI of where the crank is...............
Frankly given all that I've seen the man who sold you this bike had big windows cos he seen you coming.
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
okay ill duct tape over the holes, iv just stripped the whole airbox and alot of the small gasket type things are rotted and the air filter clogged! cleaned it all up and used gasket sealer and taping over the holes lets see if it solves anything!
ahh maybe :/ oh well, nothings fun if you dont get to fiddle with it!
okay its not simple for me because iv never touched a big motorbike before haha, well by the looks of the cdi and little boxes, should i not have one of these m max box resistor thingys?
ahh maybe :/ oh well, nothings fun if you dont get to fiddle with it!
okay its not simple for me because iv never touched a big motorbike before haha, well by the looks of the cdi and little boxes, should i not have one of these m max box resistor thingys?
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- zxr400 oc member
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Re: Help me with my wiring derestrictions!
I dont believe you need a Maxbox thingy
You would appear to have UK spec CDI................however I'm still at a loss as to how to explain the 110mph speed issues that you have
Restricted is defo the obvious answer but you seem to have the right CDI...............so something else must be wrong.
I would recommend a full and very extensive service
You would appear to have UK spec CDI................however I'm still at a loss as to how to explain the 110mph speed issues that you have
Restricted is defo the obvious answer but you seem to have the right CDI...............so something else must be wrong.
I would recommend a full and very extensive service
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
okay thank you for your help.
i have cleaned everything up, replaced little bits and bobs that were missing like the breather pipes and cleaned all the filters, ill have a go tonight and see what it does
if its still 110mph then ill take it to my local dynojet and get it serviced
one last question, next to the breather hole on the engine casing, there is a small hole with a M6 thread next to the breather hole, should this be covered and what is it for?
i have cleaned everything up, replaced little bits and bobs that were missing like the breather pipes and cleaned all the filters, ill have a go tonight and see what it does
if its still 110mph then ill take it to my local dynojet and get it serviced
one last question, next to the breather hole on the engine casing, there is a small hole with a M6 thread next to the breather hole, should this be covered and what is it for?
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- zxr400 oc member
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- Location: Carrickfergus Northern Ireland
Re: Help me with my wiring derestrictions!
The earth lead from the battery is normally bolted on there
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- L-plate hell
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Re: Help me with my wiring derestrictions!
if you want a dirty engine take a look at my (now ex) 'manky' bike lol. has somone played about with the carb internals? changed the jets ect? thats about the only thing i can think of really, apart from whats already been said.
anything is possible with enough time and money. and an open mind...
- Tirpitz
- zxr400 oc member
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Re: Help me with my wiring derestrictions!
It wouldn't exactly take a lot of time to take the rocker cover off so that you can see the cams in your supposedly SP engine with the CV carbs. If they don't have timing adjustment facilities you've been ripped off, you've got a stock motor. Anyone who knew what they were doing (which you admit you don't) would have wanted to see the engine with the rocker cover off before parting with cash.
ZXR400 L4, purple / black / pink
Hel braided hoses
Pirelli Diablos
Ohlins steering damper
A16 carbon fibre exhaust can
Nitron Sport shock
Hel braided hoses
Pirelli Diablos
Ohlins steering damper
A16 carbon fibre exhaust can
Nitron Sport shock
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
i was not ripped off at all like i payed £1200 for the bike which is in mint condition and it turns out the older sp motor was replaced with a standard engine and carbs, doesnt bother me lol just thought it was an sp thats all
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Re: Help me with my wiring derestrictions!
Did you get it sorted out?
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
nope :/ still tops out at 110mphsyihabuddin wrote:Did you get it sorted out?
iv read the stickies but they dont make it clear for what bike is which method...
all i can gather from the stickies is that for L models you just whack a CDI on and it should be derestricted?
but i did a gps with my speedo cable in and it showed 108mph and brickwalled and then i tried with my speedo cable off and it showed 114mph but i ran out of "private" road but it still felt like it was pulling, so i dont have a clue what im doing now
- banner001
- Track day God
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Re: Help me with my wiring derestrictions!
carbs, its always carbs...
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
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- Posts: 37
- Joined: Thu Aug 02, 2012 5:29 pm
- My Bike: Kawasaki ZXR 400SP
Re: Help me with my wiring derestrictions!
They have been cleaned and balanced mate :/ I think it's an electrical restriction from my speedobanner001 wrote:carbs, its always carbs...