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**SriramEfunds** · 02-08-2012, 07:35 PM

OT:- I have heard that first batch of RX100 introduced in India came with ART piston. Thinking of plonking ART piston on the restoration process, not sure if we could find one in India. Is there any way we could get to know the part number so that could try procuring it abroad?

Also found that even Thailand had RX100 and their part# starts with 1V1. However, they happen to be 54mm piston (if I'm not wrong) whereas Indian version (36L) came with 50mm.

Any information on this would not only help me but for anyone restoring their 100 by giving some good quality piston kit.

**dafc** · 02-08-2012, 10:05 PM

I think they had the RX100 with points ignition

**karthikdattag** · 02-10-2012, 10:58 AM

Originally posted by The Great View Post

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.

Firstly dont call me sir. I am also a 2-stroke enthusiast just like you.

Coming to your query, a 2-stroke cylinder power output is based on the port dimensions (port timing), number of ports, kind of ignition, compression.

For this RX series or this Yamaha single cylinder with 58mm x 50mm series here are the power figures:

1. RX135 4-speed (Indian) : 12BHP
2. RX135 5-Speed (Indian) : 14BHP
3. RD135 (Brazilian) : 16BHP
4. RX-King (Thailand, Malaysia) & RD135Z (Brazilian) : 18BHP

All the above 4 bikes have same cylinder displacement, difference being BHP figures. I would personally suggest you take a 4TL00 & 4TL10 bores & inspect them yourself for differences in Port dimensions.

P.S: Malaysian RX-135 or RX-King is same as Indian RX135, the RX-Z 6-Speed sold there is different & share no common engine parts.

Originally posted by SriramEfunds View Post

OT:- I have heard that first batch of RX100 introduced in India came with ART piston. Thinking of plonking ART piston on the restoration process, not sure if we could find one in India. Is there any way we could get to know the part number so that could try procuring it abroad?

Also found that even Thailand had RX100 and their part# starts with 1V1. However, they happen to be 54mm piston (if I'm not wrong) whereas Indian version (36L) came with 50mm.

Any information on this would not only help me but for anyone restoring their 100 by giving some good quality piston kit.

Sriram, you can't get these buddy. If i had slightest of chances i would have said yes. But the answer is "NO".

If you need ART piston kit, then nearest you can go is that of RX115, but this need rebore job or maybe even sleeve job as we are talking 15cc more than stock. Good luck.

**SriramEfunds** · 02-10-2012, 01:46 PM

Originally posted by karthikdattag View Post

Sriram, you can't get these buddy. If i had slightest of chances i would have said yes. But the answer is "NO".

If you need ART piston kit, then nearest you can go is that of RX115, but this need rebore job or maybe even sleeve job as we are talking 15cc more than stock. Good luck.

Thanks Karthik. Well, last few days sitting and googled alot on the piston part. RX115 bore is 54mm and stroke is 50mm. Our 100 shares 50mm bore not with RX115 but RXS100 which is more or less the same specs. They came with ART piston 50mm (being Std size). Wondering if more information can be found on compatibility.

**The Great** · 02-10-2012, 02:57 PM

Originally posted by karthikdattag View Post

Firstly dont call me sir. I am also a 2-stroke enthusiast just like you.

Coming to your query, a 2-stroke cylinder power output is based on the port dimensions (port timing), number of ports, kind of ignition, compression.

For this RX series or this Yamaha single cylinder with 58mm x 50mm series here are the power figures:

1. RX135 4-speed (Indian) : 12BHP
2. RX135 5-Speed (Indian) : 14BHP
3. RD135 (Brazilian) : 16BHP
4. RX-King (Thailand, Malaysia) & RD135Z (Brazilian) : 18BHP

All the above 4 bikes have same cylinder displacement, difference being BHP figures. I would personally suggest you take a 4TL00 & 4TL10 bores & inspect them yourself for differences in Port dimensions.

P.S: Malaysian RX-135 or RX-King is same as Indian RX135, the RX-Z 6-Speed sold there is different & share no common engine parts.

Appreciated for the above info bro . So if a Malaysian 135 (or Indonesian Rx-K) block is installed on an Indian 135 the Bhp would be amazingly high, with compatibility to the bikes parts.

**vijaymeyou** · 02-13-2012, 01:20 PM

Originally posted by The Great View Post

Appreciated for the above info bro . So if a Malaysian 135 (or Indonesian Rx-K) block is installed on an Indian 135 the Bhp would be amazingly high, with compatibility to the bikes parts.

hopefully

if installed along with thier respectivey silencer(factory build stock expansion chambers

) and transmission

**dual disc 200** · 02-13-2012, 01:26 PM

Originally posted by vijaymeyou View Post

hopefully

if installed along with thier respectivey silencer(factory build stock expansion chambers

) and transmission

Also add the RX King Carb Plus the CDI too...

**karthikdattag** · 02-14-2012, 03:59 PM

Originally posted by SriramEfunds View Post

Thanks Karthik. Well, last few days sitting and googled alot on the piston part. RX115 bore is 54mm and stroke is 50mm. Our 100 shares 50mm bore not with RX115 but RXS100 which is more or less the same specs. They came with ART piston 50mm (being Std size). Wondering if more information can be found on compatibility.

Yeah, thats the reason i said upsize. Please call to discuss further.

Originally posted by The Great View Post

Appreciated for the above info bro . So if a Malaysian 135 (or Indonesian Rx-K) block is installed on an Indian 135 the Bhp would be amazingly high, with compatibility to the bikes parts.

Yes, the 4Y2 series will give you 18BHP @ crank. But you will need some other modifications to translate this HP to Wheel, like Close-Ratio GB, 4Y2 con-rod, custom exhaust or EC, right sproketing as bare minimum. Otherwise you will end up waiting the whole day for the power band to open up.

If you are looking at these powers, then they may not be suitable for city traffic, but more for highway rides. You will keep on craving for more power, its better to keep RX stock & for more power buy an RD350.

**satishg** · 02-14-2012, 04:21 PM

except RX inner tubes itself, which other bikes inner tube can be used on a RX / RXZ fork with no change in the height or parts

**The Great** · 02-15-2012, 12:02 AM

Originally posted by karthikdattag View Post

Its better to keep RX stock & for more power buy an RD350.

Well said sir, truly spoken.

Nothing compares to Stock Bikes.

Mostly people end up doing wrong things all the time in search of mythical dreams of mods without proper knowledge, spending a lot, and then bragging about the false achievements and finally dragging other people into the vicious circle.

**Vampire** · 02-15-2012, 04:34 AM

has anyone here used DT125 transmission ? how is it ?

**karthikdattag** · 02-15-2012, 12:32 PM

Originally posted by The Great View Post

Well said sir, truly spoken.

Nothing compares to Stock Bikes.

Mostly people end up doing wrong things all the time in search of mythical dreams of mods without proper knowledge, spending a lot, and then bragging about the false achievements and finally dragging other people into the vicious circle.

The thing is, this modification bug never ever dies. Its an endless lust for power. This is the reason i have put a full stop to my RX135 modification. I needed a decent 125~130Kmph top speed & i got that. So thats the deadline for me.

Theoretical knowledge which is gained over forum is not enough to build a really reliable & fast setup. You need to do some practical research too.

Originally posted by Vampire View Post

has anyone here used DT125 transmission ? how is it ?

DT125 comes with 6-speed GB & is not a direct fit to Indian RX crank case. Though i have used some of the gears of DT125 & RX-K in combination, and had this setup running for more than 6 months on my green RX. Later swapped the GB with a custom drag spec 5-speed GB for more enjoyment in highways.

Though earlier models did come with 5-speed GB, if you can source it, then nothing like it.

**Vampire** · 02-16-2012, 10:50 PM

Thank ye mate !

**NitinGirish** · 03-04-2012, 09:37 PM

Originally posted by karthikdattag View Post

15. Can the Malaysian RX-Z 6-Speed Engine Parts be used in Indian RX-Z or RX135? If not then what options do we have?

The only other option to use Imported parts are that of Malaysian/Indonesian RX-King or Brazilian RD-135. The original "4Y2" parts of these are also very hard to find, but you may get them if you are lucky. These are direct fit to all our 135CC RX models.

Hello Karthik,

What is the power rating of Malaysian blocks? Also, if we install Malaysian block, do we need to change any other stuff like carb, head, etc or is it literally just plug & play?

**dual disc 200** · 04-26-2012, 03:27 PM

@ All Experts,

what do you guys have to say about this..?

http://www.xbhp.com/talkies/motorcyc...tml#post804789

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