Re: Hero Honda Karizma ZMR

Guys as you know I changed the oil last week after using the oil for 3500 kms which was a bit too long. Had the oil changed last week to the same rimula. But when I checked the level today, the oil was a bit dark in colour. I hardly have done 100kms since the oil change. Is the oil getting burnt? And I observe daily for smoke but am 100% sure there's none.

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Re: Hero Honda Karizma ZMR

Then, I guess ECU remap will solve the prob ryt?

Re: Hero Honda Karizma ZMR

Again, none that I'm aware of. Heard about custom ECU maps for Duke 200, R15 and CBR 250R. But, these are sold internationally too.

Re: Hero Honda Karizma ZMR

The earlier overused oil has mixed with the fresh one and therefore it appears dark in color.

Re: Hero Honda Karizma ZMR

Can please share the pics of the ZMA exhaust in ZMR??? Though not sure it will be effect the bike's performance and engine in future.. Why am I asking all this as the ZMA's exhaust is ready available in the SVC....

Need more support from the you guys then only I will decide to go for the ZMA's or wait for the stock one.... The ZMA's golden exhaust is available and hence I am bit tempted for it, though not sacrificing the bike's health....

Re: Hero Honda Karizma ZMR

Naah, its a 2.5 year old incident and I was new to XBHP as well that time.
The SVC guys asked me not to speed with that exhaust as nobody knew what might happen. Wait for sometime but get the OE part for ZMR only.

Re: Hero Honda Karizma ZMR

I guess that best!! Wait for the original part..

Re: Hero Honda Karizma ZMR

I am in the process of buying used ZMR as Hero honda got the best suspension and reliability and I own Pulsar 180 clocked 70K+.
Just wanted to clear some misconceptions about o2 sensor. For a narrowband sensor beyond 14.7 is lean and the voltage drops to 0.1v and during rich voltage swings to 0.9V. 0.45V its said to be stioch. Closed loop mode the sensor keeps switching from rich to lean vice versa as the ecu regulates the fuel constantly based on the o2 feedback. Open loop conditions has set of predetermined criteria used where ecu goes to open loop. Some factors are high MAP load low rpm, throttle beyond 60%, low oil temperature.
I cant agree the removal of snorkel increases mileage by making the engine running lean. There is another factor plays important role(volumetric efficiency). Engine is nothing but glorified air pump. Snorkel is kept to reduce port noise and improve low end torque in case of tuned pipe. But it does provide restriction to the air movement. As I mentioned engine is an air pump. At part throttle energy is wasted by sucking the air through this restriction during suction stroke. Inorder to compensate the loss we increase the throttle little bit to match the desire speed and rpm. With the snorkel removed engine breathes more freely and less throttle input is need to keep tje same speed thus increasing volumetric efficiency. This alters the TPS value and effective fuel quantity is determined by TPS value*MAP*rpm = less fuel injection. In some cases there may be increase in vacuum due to low throttle opening. Less TPS value and less MAP value means less load to the engine so ecu can advance the timing little bit. This is the case one can feel little more power even in lean mixture.
During high rpm things are little different. Intake gases are now flowing very easily with much less restriction and high velocity. But the efficiency is affected by the duration of valve overlap. Valve overlap is the condition when the exhaust stroke is about to complete both intake and exhaust valve will be kept open for scavenging. Due to high velocity of the intake mixture some fresh mixture escapes to the exhaust manifold thus reducing FE. In this case keeping the intake restriction will reduce this phenomenon. In the open loop ecu wont check with o2 sensor but it has target AFR map which is preloaded based on TPS, MAP, Baro, IAT

karizma ZMR Front shocker

Hi Friends,
I recently bought ZMR, The ride is good , but i find it little forward lean position which make it little tiring after some time if i am riding alone. However if there pillion rider with me than its comfortable as the rear of the bike moves little down and i get a more upright position to sit.


so i was thinking of either increasing the front shockers height or changing the handle bar with something more taller..
So can you please suggest me , what is the better of them

Regards
Nitin

Re: karizma ZMR Front shocker

Are u kidding me? ZMR has got one of the most upright positions among the indian sportsbikes/tourer bikes. Only maybe a Bullet, Yezdi, other cruiser bikes, etc can beat. No one among the sportsbikes can beat it. I think u shud rather go for a Bajaj Avenger 220. That'd suit u well.
Hv u seen the likes of Yamaha R15 v2.0's seat position. ZMR's seating position has got no probs AFAIK.

P.S: How much hv u ridden btw? Ride at least 500-600km after which most of the probs like wrist pain, back pain are guaranteed to vanish.

Re: karizma ZMR Front shocker

Hi jack_daniels,
So far i have ridden 490 Km, i Know it is the most upright position in the category of sports bikes in india, but i am still looking for little more sitting comfort. So can you suggest how to make sitting position more upright.

Re: karizma ZMR Front shocker

Grabbing the tank with both legs makes you sit more upright as front fenders has provision to gives better grips to your legs, however it depends on person to person as far as the sitting position concerns, I would advice you not to change the handle bar neither the front suspensions which will change the stock riding/handling geometry.

Re: Hero Honda Karizma ZMR

Well, when i first rode it, even I found ZMR's sitting posture slightly forward inclined, and the foot pegs a bit rearwards set. But that is totally because I'm used to a Honda Unicorn since last 8 years (which is an 150cc commuter bike, and has one of the most upright sitting postures), and not because there's something wrong with the ZMR. In fact the most important reason of my choosing the ZMR was it's riding comfort. Otherwise I would have gone with the R15, or the CBR 250 (budget permitting).
Now with 700+ km on my ZMR I feel it's as comfortable as a sports tourer can get! I used to get back pains after 30 mins on my unicorn, but today only I rode my ZMR for more than an hour without any pain any where

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Re: karizma ZMR Front shocker

There's nothing wrong wid the ZMR's seating posture, trust me. Ride another 100km & all probs will vanish. I also suffered from wrist pains (no back pains though) in the 1st 500 kms. After dat, all probs have vanished for me.
Moreover, in ZMR (although its a sportsbike) is designed more to be a sports-cum-tourer. So, u're on the bike unlike other sportsbikes where u're in the bike. So, u'll notice that we don't need any tank pads as the tank is completely flat.

Re: Hero Honda Karizma ZMR

Any idea when the facelifted ZMR is launching?