[Discussion] CB400 SUPER FOUR HYPER VTEC Revo

[nx.]

Hi all, i have been using engine oil 10w40 instead of 15w50. Just want to check if it makes much difference and which grade of engine oil will be more recommended ?

[ashernal04]

Hi. Can i know the cost to change battery and if there's any shop that is open today, on a Sunday? Also, if there's a rectifier problem, how much to replace it?

[Skuzz]

Brother, can we just omit the resistor and diode, but just connect the capacitor in parallel to chassis. In case of the capacitor turning bad and shorting in the future, maybe can place a 1A fuse just before the capacitor as an additional safety.

 

I put the diode there as a buffer to stop the capacitor being drained by the rest of the bikes electrics.

Explanation: when starter button is pressed the battery voltage drops considerably. The diode allows the instrument side to maintain (for about half a second) the initial higher voltage before pressing the start button. i.e. it delays the capacitor from copying the voltage drop of the battery.

 

The resistor is there to lower the initial current surge when charging the capacitor, it can be as high as 100Amps for a microsecond or so (it does work without the resistor, but may eventually blow the bikes fuse through fatigue).

 

Fuse is always a good idea, I'm just relying on the bikes 10A fuse that protects - Instruments, Indicators, Tail & licence lights & horn.

 

Do try your idea of just a capacitor as it will be easier to do. Let us all know if you are successful.

 

p.s. hope this all makes sense??? & I've updated the circuit diagram. Diode should read 1N5821 not 1N5004

Edited August 27, 2014 by Skuzz

[oldcat5000]

less than 20km/l is really bad you know...? from what i know revo is around 22-24km/l. my spec3 currently is having 26-27km/l

 

Yea but how you come out with your FC? I just got back from a trip to cameron and based on the trip my FC is only about 17km/L with Vtec on all the way.

[justforme]

Yea but how you come out with your FC? I just got back from a trip to cameron and based on the trip my FC is only about 17km/L with Vtec on all the way.

 

no idea. when i got my bike it was already this range.

 

i only go into vtec on expressway only.

i usually change gear at 5-5.5k rpm.

no petrol or engine oil additives used.

no voltage stabilizer or whatever power altering add-on.

did carb washing and tuning at unique recently but same FC.

using 520 chain sprocket set-up. (lighter chain and sprocket)

my rear sprocket is 2 teeth more. i think usual is 43 mine is 43+2 = 45teeth. (less top speed more pickup power, decreases my FC actually previously can hit 28km/l)

i pump my tyre every 2+- weeks.

using scott oiler (just lazy to push and oil chain, didnt increase FC)

engine oil grade or brand dosent affect my FC too. personally like 15w50 more. (tried liqui moly, silkolene, OWS, maxima)

[darkforce]

no idea. when i got my bike it was already this range.

 

i only go into vtec on expressway only.

i usually change gear at 5-5.5k rpm.

no petrol or engine oil additives used.

no voltage stabilizer or whatever power altering add-on.

did carb washing and tuning at unique recently but same FC.

using 520 chain sprocket set-up. (lighter chain and sprocket)

my rear sprocket is 2 teeth more. i think usual is 43 mine is 43+2 = 45teeth. (less top speed more pickup power, decreases my FC actually previously can hit 28km/l)

i pump my tyre every 2+- weeks.

using scott oiler (just lazy to push and oil chain, didnt increase FC)

engine oil grade or brand dosent affect my FC too. personally like 15w50 more. (tried liqui moly, silkolene, OWS, maxima)

 

bro, where to do scott oiler??

 

also what's the use of doing tuning?

[justforme]

bro, where to do scott oiler??

 

also what's the use of doing tuning?

 

scott oiler distributor is motoworld. i got it at uniquemotor same price but i would recommend you get it done at motoroworld.

 

washing is to clear the carbon and tuning to get a consistent air intake for all the 4 air inlet. this way u can get better combustion and smoother ride since all 4 valves are combusting similarly. i didnt know when was the last time the tuning was done but when they checked the air intake of one of the valve was a lot higher than the other 3.

 

i think i already spent thousands on my bike doing tuning and replacing old parts

nxt one is probably top servicing soon lol. i'm still left with a few bearings on movable parts not checked and fork oil replacement currently.

[darkforce]

scott oiler distributor is motoworld. i got it at uniquemotor same price but i would recommend you get it done at motoroworld.

 

washing is to clear the carbon and tuning to get a consistent air intake for all the 4 air inlet. this way u can get better combustion and smoother ride since all 4 valves are combusting similarly. i didnt know when was the last time the tuning was done but when they checked the air intake of one of the valve was a lot higher than the other 3.

 

i think i already spent thousands on my bike doing tuning and replacing old parts

nxt one is probably top servicing soon lol. i'm still left with a few bearings on movable parts not checked and fork oil replacement currently.

 

Icic, what's the price like to get it fixed for scott oiler??

 

I'm maybe looking for new exhaust so I wait till then before doing the tuning?

[justforme]

Icic, what's the price like to get it fixed for scott oiler??

 

I'm maybe looking for new exhaust so I wait till then before doing the tuning?

 

i think price still $185

 

i dun think exhaust changing will affect carb air intake. exhaust change is more of a dyno tuning.

 

dyno tuning is adjusting the fuel and air to maximize your exhaust performance. carb tuning is just making sure all 4 valves are taking in the same amount of air.

 

perhaps i should say carb balancing rather than carb tuning to avoid confusion. XD

 

some photos i did a random search for easier understanding.

 

un-tuned carb

tuned carb

[darkforce]

i think price still $185

 

i dun think exhaust changing will affect carb air intake. exhaust change is more of a dyno tuning.

 

dyno tuning is adjusting the fuel and air to maximize your exhaust performance. carb tuning is just making sure all 4 valves are taking in the same amount of air.

 

perhaps i should say carb balancing rather than carb tuning to avoid confusion. XD

 

some photos i did a random search for easier understanding.

 

un-tuned carb

[ATTACH=CONFIG]309799[/ATTACH]

tuned carb

[ATTACH=CONFIG]309800[/ATTACH]

 

 

thanks for the info, I might make a trip down later.

[justforme]

thanks for the info, I might make a trip down later.

 

you're getting scott oiler or doing your carb?

[Winners]

I put the diode there as a buffer to stop the capacitor being drained by the rest of the bikes electrics.

Explanation: when starter button is pressed the battery voltage drops considerably. The diode allows the instrument side to maintain (for about half a second) the initial higher voltage before pressing the start button. i.e. it delays the capacitor from copying the voltage drop of the battery.

 

The resistor is there to lower the initial current surge when charging the capacitor, it can be as high as 100Amps for a microsecond or so (it does work without the resistor, but may eventually blow the bikes fuse through fatigue).

 

Fuse is always a good idea, I'm just relying on the bikes 10A fuse.

 

Do try your idea of just a capacitor as it will be easier to do. Let us all know if you are successful.

 

p.s. hope this all makes sense??? & I've updated the circuit diagram. Diode should read 1N5400 not 1N5004

Thanks Skuzz for your explanation. I'm too lazy to do the circuit modification now. Maybe later or when I need to open up the headlight/speedometer panel in the future. In the meantime, I'll just live with the "double-sweeping" action (on the meters).

[Skuzz]

Thanks Skuzz for your explanation. I'm too lazy to do the circuit modification now. Maybe later or when I need to open up the headlight/speedometer panel in the future. In the meantime, I'll just live with the "double-sweeping" action (on the meters).

 

Capacitor is too large for mounting in the actual instruments. Modification therefore has only to be inside the headlight & there isn't a lot of room in there either!!

 

Make sure you refer to the circuit on the original posting, it may have changed.

Edited August 14, 2014 by Skuzz

[HaiR1]

scott oiler distributor is motoworld. i got it at uniquemotor same price but i would recommend you get it done at motoroworld.

 

washing is to clear the carbon and tuning to get a consistent air intake for all the 4 air inlet. this way u can get better combustion and smoother ride since all 4 valves are combusting similarly. i didnt know when was the last time the tuning was done but when they checked the air intake of one of the valve was a lot higher than the other 3.

 

i think i already spent thousands on my bike doing tuning and replacing old parts

nxt one is probably top servicing soon lol. i'm still left with a few bearings on movable parts not checked and fork oil replacement currently.

 

 

 

Wow.. Cool explanation

 

"washing is to clear the carbon"

 

 

[Winners]

Capacitor is too large for mounting in the actual instruments. Modification therefore has only to be inside the headlight & there isn't a lot of room in there either!!

 

Make sure you refer to circuit4.jpg on the original posting.

Hi Skuzz, noted with thanks.

[Baal]

Yea but how you come out with your FC? I just got back from a trip to cameron and based on the trip my FC is only about 17km/L with Vtec on all the way.

 

If urs is revo, it may not be far off. Recalled an earlier post where a bro mentioned he only got 15/L while running in (

 

Based on the above, i reckon, with changing to Fully Syn eo (upon fully breaking in & occassional VTEC use), giving it a 20% improvement in FC, that would translate to 18/L. Hence, based on going up north with VTEC alwats open at high speed utilizing 6th gear, 17/L sounds reasonable.

[oldcat5000]

If urs is revo, it may not be far off. Recalled an earlier post where a bro mentioned he only got 15/L while running in (

 

Based on the above, i reckon, with changing to Fully Syn eo (upon fully breaking in & occassional VTEC use), giving it a 20% improvement in FC, that would translate to 18/L. Hence, based on going up north with VTEC alwats open at high speed utilizing 6th gear, 17/L sounds reasonable.

 

ic, thanks for bringing in a comparison haha. glad to know that my bike is functioning normally but still a bit disappointing since it means my FC is similar to some class 2 bikes which is crazy considering my engine capacity >.<. wonder if any brothers out there managed to squeeze a better fc of revo before>

[leomaster]

Hi I just install Scott oiler today.

What are the best adjustment?

I count currently around 1 min 15 sec 1 drop

 

And how ur drop point install?

My is around 1cm on top of chain.

When we ride the oil drop won't fly away?

[justforme]

Hi I just install Scott oiler today.

What are the best adjustment?

I count currently around 1 min 15 sec 1 drop

 

And how ur drop point install?

My is around 1cm on top of chain.

When we ride the oil drop won't fly away?

 

according to the design of scott oiler the nozzle should be in contact with the sprocket. however only one side will be oiled, unless you increase the flow to quite high that it 'overflow' to the other side on the chain but this will cause crazy flinging of oil.

 

i am currently doing some self modification to create a dual injector which scottoiler sells for like a quarter of the price of the oiler.

[Siphon]

Anyone remember about the rattling sound from 3-5rpm issue? How did it get resolved? I started hearing it after my 4000km servicing... With dealer some more...

[Siphon]

Anyone.knows.how.much is it to.change.a cam tensioner

[Skuzz]

Anyone.knows.how.much is it to.change.a cam tensioner

 

Honda quote 6 hours 36 minutes to do the job, it will be expensive. Get a quote and another quote to check the valve shims at the same time. Should save a bit on labour costs. Surely at 4,000 kms it is still under warranty?

Edited August 17, 2014 by Skuzz

[Siphon]

Its still under warranty... But really? 4000km and it's spoilt... I didn't even ride it hard yet... Like max 9k rpm only...

[justforme]

according to the design of scott oiler the nozzle should be in contact with the sprocket. however only one side will be oiled, unless you increase the flow to quite high that it 'overflow' to the other side on the chain but this will cause crazy flinging of oil.

 

i am currently doing some self modification to create a dual injector which scottoiler sells for like a quarter of the price of the oiler.

 

to anyone interested in dual injector for scottoiler. this is what i did.

 

from opposite side view

top view

both side of chain is lubricated

[hakimaru]

Hi guys, is there a wired cable connected from the radiator to the engine? I bought this 08 model revo. And there seems to be a connector on the left side of the radiator BUT without cable. Please enlightened me. Its weird coz i see my uncles radiator has no cable connected to the engine at all. His bike is an 2012 model. Please help. This looks to be serious.

 

 

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