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**sanjithjoseph** · 09-03-2011, 03:26 PM

@Nitesh : Is it possible to get some info from colour of plugs? Can post it in detail?

**yamdoot** · 09-03-2011, 03:54 PM

Originally posted by sanjithjoseph View Post

@Nitesh : Is it possible to get some info from colour of plugs? Can post it in detail?

Check this-

NGK Spark Plugs USA

**dafc** · 09-03-2011, 09:29 PM

actually plug chops are much more accurate and you can get down to the circuit that's running lean and not end up chasing gremlins somewhere else

**karthikdattag** · 09-14-2011, 02:03 PM

Question 15 added.

**sanjithjoseph** · 09-15-2011, 09:03 AM

Originally posted by yamdoot View Post

Check this-

NGK Spark Plugs USA

Originally posted by dafc View Post

actually plug chops are much more accurate and you can get down to the circuit that's running lean and not end up chasing gremlins somewhere else

thanks Nitesh and dafc for the info..

**The Great** · 09-19-2011, 05:08 PM

Originally posted by karthikdattag View Post

Question 15 added.

Chain and Sprocketing details also would enhance the threads value.

Kindly add tips for sprocketing values. To me, the sprocketing digits (like 15/38 or 16/39 or whatever) are still quite hard to understand on performance vs mileage vs initial vs top-end.

**karthikdattag** · 10-04-2011, 03:05 PM

Originally posted by The Great View Post

Chain and Sprocketing details also would enhance the threads value.

Kindly add tips for sprocketing values. To me, the sprocketing digits (like 15/38 or 16/39 or whatever) are still quite hard to understand on performance vs mileage vs initial vs top-end.

Question no. 16 added.

**The Great** · 10-16-2011, 06:36 PM

Originally posted by karthikdattag View Post

Question no. 16 added.

Thats really great sir.. guys like you who share info and spread knowledge is commendable..

Cheers for the response.

Also would like to know the pros and cons of re sleeving the engine block since the availability of blocks is getting scarce and the re sleeving process is one of the options if not a great one.

**The Great** · 11-05-2011, 02:35 AM

Ok .. so since we are allowed to ask questions here i just had a thought...

All 2 strokers are asking performance and mileage options.. but i personally have come across this embarassment.

Whenever i put a little pre mix 2t more the bike smokes a lot... in general also i have seen a lot of Rx series bikes or 2 stroke bikes that show a lot of smoke from the exhaust.

Now my question is if 2 strokes are really banned for pollution reasons why dont we discuss here how to reduce the pollution making capabilities of the bike. What i mean to say is what upgrades are necessary for the bike to combust more lean and minimise the pollution causing ability of the Rx series.

It may sound funny to most and prejudice to 4 strokers but in my opinion to really save and bring back the 2 strokes this discussion has to begin.

**vijaymeyou** · 11-06-2011, 10:07 PM

Originally posted by What i mean to say is what upgrades are necessary for the bike to [B

combust more lean and minimise the pollution[/B] causing ability of the Rx series.

It may sound funny to most and prejudice to 4 strokers but in my opinion to really save and bring back the 2 strokes this discussion has to begin.

nice to hear that some one have interest on 2 stroke technolgy upgrades rather then perfomance upgrade.

(pollution) excessive exhaust smoke's mainly reason is due to high mixture of 2 t oil then actually specified(required). also thats the main reason for fogging smoke rather then rich air fuel mixture.

i always love 2 stroke diesel (detroit)engine which have the performane of 2 stroke and clean combustion of air fuel mixture as 4 stroke with out extra 2t oil.

but one needs to add an extra exhaust valve

like 4 jokes

i have a long time plane to achive this if time permits.

**vijaymeyou** · 11-06-2011, 10:17 PM

any one can share indepth technolgy details

about aprilia two strokes...

they claims that there engines leave less residues then 4 stroke engines in stock condition with factory restrictions...and (hope)still they are in production.

**kb100** · 11-06-2011, 11:38 PM

Originally posted by vijaymeyou View Post

any one can share indepth technolgy details

about aprilia two strokes...

they claims that there engines leave less residues then 4 stroke engines in stock condition with factory restrictions...and (hope)still they are in production.

aprilla uses direct injection in its 2stroke engines , i think its used in only their scooters only ,
btw you can search about bimota vdue , it was the first proper 2stroke superbike with 2stroke fuel injection , it was supposed to be a path-breaker instead it broke the back of the marque as the engine was desingned in house by bimota itself , the company tried to salvage it by fitting carburettors but for some reason it didnt sell well , and the firm went under (it was revived recently) , for those who are still not convinced , imagine a v-twin 500cc 2stroke engine developing over 110 horses(carb) housed in a chasis designed by people who could teach ducati a lesson or two in handling clothed in italian bodywork, if still not impressed try the image

and also two strokes arnt that extinct , the diesel railway engines running in this country are all two strokes so are most marine diesels , in fact the larger diesels are more efficient compared to anything else in existance

**karthikdattag** · 11-07-2011, 10:35 AM

Originally posted by kb100 View Post

and also two strokes arnt that extinct , the diesel railway engines running in this country are all two strokes so are most marine diesels , in fact the larger diesels are more efficient compared to anything else in existance

Absolutely spot on.

Just an OT here:

Some of the important reasons why 2 stroke engines are more popular than 4 stroke engines as main propulsion engine on ships

Fuel Selection: The fuel prices have gone sky high and better grade fuel is adding higher costs to vessel operation. A two stroke engine can burn low grade fuel oil and hence reduce running cost of the ship.

Efficiency: The thermal and engine efficiency of 2 stroke engine is much better than that of a 4 stroke engine.

Power: Most of the 2 stroke engines are now large stroke engines that produce more power. Hence they have high power to weight ration as compare to 4 stroke engine.

More Cargo: Ship can carry more weight and hence more cargo with 2 stroke engines because of high power to weight ratio.

Reliability: Two stroke engines are more reliable in operation as compare to 4 stroke engine.

Less Maintenance: The maintenance requirement of two stroke engine is much lesser than 4 stroke engine.

Direction control: Direct starting and reversing is easier with two stroke engine.

No reduction attachments: As two stroke engines are low speed engine, there are no requirement of reduction gear or speed reduction arrangement as required for high speed four stroke engine.

Now this makes me wonder why can't we have 2-stroke diesel engines in passenger cars, if not mass production, atleast for select models (I am talking Indian Car scene only). Boy would i love to ride a V6 2-stroke Turbo-Charged Diesel Powered Car & beat all the 4-Joke CRDIs out there.

**vijaymeyou** · 11-07-2011, 11:48 AM

karthik i always dreams

to make one 2 stroke diesel bike(my rx) for me by increasing the compression and replaceing spark plug with piezo injector(like CRDI ones). but ECU and small injector matters...

also diesel cannot be a single cylinder because of high power and for balancing and with stand requires 2 or more cylinders.

**The Great** · 02-08-2012, 03:12 PM

Originally posted by karthikdattag View Post

the Indian RX-Z or RX135 Bore x Stroke values = 58mm x 50mm, resulting in displacement of 132.157 Cm3.

I read this posting every time i have a doubt and hats off to you sir that you have been so much instrumental in providing the detailed know hows.

One question though,

Since the Malaysian and Indian rx 135's are different. How about the Indian 4 speed and the 5 speed.

What i mean to ask is that how is the Bhp different on both cylinders as i believe the bore and stroke are the same in the Rx 4 speed and 5 Speed versions here.

To put it more simply how are the 12 bhp and 14 bhp achieved in the same cylinder. People often talk about the 4 speed and 5 speed blocks being different but i want to know how are they different. Not just simply by identifying the 4TL10 or 4TL00.

I may be wrong but am sure hungry for this info sir.

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