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**ashwinprakas** · 07-11-2011, 12:35 AM

**Aneesh@4GHz** · 07-11-2011, 10:22 AM

Originally posted by kariznin View Post

Mine is a 2005 model bro.

I am also confused over this FE issue ?

Great bro.

Normally FE will be low when AFR is rich,but here,yours is very lean,normally very lean means you will get very good mileage figures,even i had got 36 in cities with hard ripping due to lean AFR,That's what i am confused about.

Originally posted by ashwinprakas View Post

They cost Rs.750 per pair and are worth every single penny.

+1^^^ Very Bright and 100% satisfied.

Originally posted by ashwinprakas View Post

Thats me under the hood.

AneeZma.

**ashwinprakas** · 07-11-2011, 10:48 AM

Originally posted by Aneesh@4GHz View Post

Great bro.

Thats me under the hood.

AneeZma.

Lol... UNDER THE HOOD!!!

**Aneesh@4GHz** · 07-11-2011, 10:52 AM

Originally posted by ashwinprakas View Post

Lol... UNDER THE HOOD!!!

Oops,Its a typo,I mean head.

**ashwinprakas** · 07-11-2011, 10:56 AM

Originally posted by Aneesh@4GHz View Post

Oops,Its a typo,I mean head.

I like hood better.. cause it makes me feel all sporty and tuny...

**Aneesh@4GHz** · 07-11-2011, 10:57 AM

Originally posted by ashwinprakas View Post

I like hood better.. cause it makes me feel all sporty and tuny...

I mean me under the headlight.

whichever you like,read it.

**kariznin** · 07-11-2011, 11:28 AM

Originally posted by Aneesh@4GHz View Post

Great bro.

Normally FE will be low when AFR is rich,but here,yours is very lean,normally very lean means you will get very good mileage figures,even i had got 36 in cities with hard ripping due to lean AFR,That's what i am confused about.

My current AFR setting is done by the mechanic at the SVC yesterday, don't know what it is right now. Today, I had taken my bike to office. Yesterday, after filling in Speed of 200/- , today my bike had taken reserve fuel on 58.4KMS.
So, as it ran 33KMS on reserve yesterday on highway, adding the same same to today's ran kMS it would be 91.4KMS, taking it to the FE of 30.35 with little ripping on highway yesterday and maintaining an avg speed of 80KMPH while coming today to office.

Calculation part : 200/- Speed Petrol @ 66.30/Ltr
Filled petrol : 3.012 Ltr
58.4( ran when not in reserve) + 33(taken yesterday's estimation for reserve) = 91.4
FE : 91.4/3.012 = 30.35

I think now it is going w.r.t FE's but will have to test that in a longer run.

**MAXzma** · 07-11-2011, 12:06 PM

Did the Boric acid treatment to my bike this weekend. Added 600 ml of Gulf Pride 4T Plus 20W40 to my engine after draining out the old oil. To the remaining 400 ml, I added 30 gm of Boric acid. We should mix the Boric acid to 2T oil for it to mix well but I somehow missed it. My bad!

Then I added around 300 ml of the mix to the engine and rode off to Yelagiri. Trip came around 320 km and I noticed the engine to be a bit louder. Called PSR sir and then found out my bad because I had not mixed it with 2T. The engine oil had become a brownish too already so he suggested an oil change with 10w30 with 10 gm Boric acid for the next 300 km and then switch to 20w40 with 10 gm Boric acid again.

Effects after adding Boric acid:
-Yet to assess them as I was a bit worried about the engine noise and still all my thoughts are on that. Hoping nothing is messed up. Will get back on the engine noise and detailed feedback.

**Only Amit...** · 07-11-2011, 06:26 PM

Originally posted by MAXzma View Post

Did the Boric acid treatment to my bike this weekend. Added 600 ml of Gulf Pride 4T Plus 20W40 to my engine after draining out the old oil. To the remaining 400 ml, I added 30 gm of Boric acid. We should mix the Boric acid to 2T oil for it to mix well but I somehow missed it. My bad!

Then I added around 300 ml of the mix to the engine and rode off to Yelagiri. Trip came around 320 km and I noticed the engine to be a bit louder. Called PSR sir and then found out my bad because I had not mixed it with 2T. The engine oil had become a brownish too already so he suggested an oil change with 10w30 with 10 gm Boric acid for the next 300 km and then switch to 20w40 with 10 gm Boric acid again.

Effects after adding Boric acid:
-Yet to assess them as I was a bit worried about the engine noise and still all my thoughts are on that. Hoping nothing is messed up. Will get back on the engine noise and detailed feedback.

I mixed 20gm directly to 150ml of 20W40 oil, didn't feel any engine noise as such.May be my zeema already makes a lot of noise

. I rode continuously for 60 kms took a 30 min break and then again 100+ kms. You will feel the true character after crossing 500kms with this solution.

**psr** · 07-11-2011, 07:05 PM

Originally posted by MAXzma View Post

Did the Boric acid treatment to my bike this weekend. Added 600 ml of Gulf Pride 4T Plus 20W40 to my engine after draining out the old oil. To the remaining 400 ml, I added 30 gm of Boric acid. We should mix the Boric acid to 2T oil for it to mix well but I somehow missed it. My bad!

Then I added around 300 ml of the mix to the engine and rode off to Yelagiri. Trip came around 320 km and I noticed the engine to be a bit louder. Called PSR sir and then found out my bad because I had not mixed it with 2T. The engine oil had become a brownish too already so he suggested an oil change with 10w30 with 10 gm Boric acid for the next 300 km and then switch to 20w40 with 10 gm Boric acid again.

Effects after adding Boric acid:
-Yet to assess them as I was a bit worried about the engine noise and still all my thoughts are on that. Hoping nothing is messed up. Will get back on the engine noise and detailed feedback.

MAX zma, mixing with 2 T oil makes the Boric Acid mix well without lumps, and helps in even distribution in the engine oil. You had old me of a small screech sound at low RPM,and disappears at higher RPM, as also of little noise in engine as if some chain is loose...Since it is a pre-owned ZMA bought recently at 35 + K Kms, you did not know of the previous owner's maintenance , I suspect either the Timing Chain to be old and loose or the tensioner is not good.The previous 20w40 oil had turned dark in just 1,000 +Kms which may be due to compression leak, and it is happening at 350 kms in new oil also, which is why I just wanted confirm by changing to new 10w30 for flushing out old sludge accumulated before, and at same 300 + Kms will observe what happens to this oil also.
Mixing with the regular engine oils will leave small lumps in the oil,but are not dangerous to cause problems in ZMA...so don't feel bad about it..

**Aneesh@4GHz** · 07-11-2011, 07:08 PM

Originally posted by ashwinprakas View Post

How to adjust beam???? Aneesh tried fiddling with the screw but didnt notice any change in the beam.???

PSR Sir,Help!!!

**acs1207** · 07-11-2011, 07:19 PM

Originally posted by Aneesh@4GHz View Post

Normally FE will be low when AFR is rich,but here,yours is very lean,normally very lean means you will get very good mileage figures,even i had got 36 in cities with hard ripping due to lean AFR,That's what i am confused about.

(Just my doubts - not sure about what I'm posting here .. )

How lean was it ? I mean how many turns out ? If it is too lean I think you will get neither mileage nor power . Since it's too lean you may have to ride in a higher gear than when it's rich . To check whether it's too lean , try running the bike at the lowest speed in top gear without stalling or (the engine) knocking . In my current set up ( 3.5 turns out ) , I can go at 23-24 kmph in top gear without knocking and can (very)gradually accelerate from that speed without changing gears . I get a mileage of 28 - 29 kmpl in city /sane-ride with just a bit high RPM riding in lower gears ( for over taking ) . I think my set up is just a bit lean , but not too lean - I'd be happy with low speed of 25-26 kmph . Since I'm trying to find the sweet spot I'll only change the settings in combination with other factors (like acetone in petrol , boric acid + 2T oil in oil etc ) .

**Aneesh@4GHz** · 07-11-2011, 07:44 PM

Originally posted by acs1207 View Post

(Just my doubts - not sure about what I'm posting here .. )

How lean was it ? I mean how many turns out ? If it is too lean I think you will get neither mileage nor power .

How mileage decreases with Lean AFR? I want to know that,already posted the query but no response yet.

To check whether it's too lean , try running the bike at the lowest speed in top gear without stalling or (the engine) knocking . In my current set up ( 3.5 turns out ) , I can go at 23-24 kmph in top gear without knocking and can (very)gradually accelerate from that speed without changing gears . I get a mileage of 28 - 29 kmpl in city /sane-ride with just a bit high RPM riding in lower gears ( for over taking ) . I think my set up is just a bit lean , but not too lean - I'd be happy with low speed of 25-26 kmph.

Doesnt that make stress to engine? very low speed @ high gear?

Guess 3.5 turns is he optimal setting,ie not rich and not lean setting.I am running @ 4turns and getting 29-31km/l even with ripping and 100% time with pillion.

Anything below 3.5turns is lean,on seeing his plug,i think its 3 or less than 3 turns,because its so lean,you can see it from the pic.

Just my thoughts.

**acs1207** · 07-11-2011, 08:48 PM

Originally posted by Aneesh@4GHz View Post

How mileage decreases with Lean AFR? I want to know that,already posted the query but no response yet.

As per my view , if you make a carb too lean , then it won't have the required power in the normal RPM and so you will have to open the throttle some more . Since the AFR screw decides what amount of fuel goes in from idling to may be 2k or 3k RPM ( ? ), in that range you won't be getting the power you would have if the carb was slightly richer and you will be giving more throttle to get the required power .

@psr - please help me out - I'm not that good at explaining things , I guess . And if I am wrong , please correct me ..

23-24 kmph in top gear
Doesnt that make stress to engine? very low speed @ high gear?
Guess it does and also fuel economy will suffer . But that's not my riding style - I do it just to check how low it goes in top gear .

Guess 3.5 turns is he optimal setting,ie not rich and not lean setting.I am running @ 4turns and getting 29-31km/l even with ripping and 100% time with pillion.

Apart from the AFR setting , the RPM band in which we ride also determines the mileage . There's a 'sweet-band' where you get optimum mileage . Higher or lower than that gives you less mileage . Mostly I might be riding below that band !!

Replies in bold

**ravneetsingh** · 07-11-2011, 10:42 PM

hello guyss
i got a problem in my zma...The things is after going back to stock filter avgr fallen to 30 kmpl before it was touching 50kmpl when i was using kn filter without jetting up.. speedo at 80km...but my topend speed was gone then after frnd suggestion i came back to stock one.
the thing is today i been to very next city 80km..n my ride first time stuck @119 in speedo.. n 100km/hr @ 6500 rpm...AFR is 2.5 turn...n oil was changed before 1800km...n bike covered 9846km

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