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**arunyajaman** · 09-08-2011, 11:04 PM

Originally posted by karthikdattag View Post

Yes it can be done. But you will need to find the original STD size 4Y201 "ART" piston kit first.

I was in KL last year & all i could find was some local after market stuff for RX-King, but there are plenty of spares for RX-Z 6-Speed (which was still in production back then). As i had severe constraint of time could not visit S'pore.

Tell me one thing, what is wrong with Indian 135 bores? Why are you so particular about these imported bores?

I am using our normal Indian bore & i am running a stage 3+ ported setup on both my bikes!!!!!! But yes, my bottom end of engine is full of imported stuffs. Even the tyres on my Green 5-Speeder were imported from S'pore.

How much will 3KA bore cost?

There is nothing wrong with Indian bores. Moreover my nephew is visiting malaysia, so i thought its a good opportunity to grab the kit.

And let me know the cylinder kit No. of RX-Z in malaysia. As it is very hard to find RX-Z 5 speed bore in India, I thought of importing it.

If I import the RX-Z cylinder kit from malaysia, what all things in the bike should i alter? should i change the gear box too? If yes should I be importing the GB also?

**karthikdattag** · 09-09-2011, 10:47 AM

Originally posted by arunyajaman View Post

How much will 3KA bore cost?

There is nothing wrong with Indian bores. Moreover my nephew is visiting malaysia, so i thought its a good opportunity to grab the kit.

And let me know the cylinder kit No. of RX-Z in malaysia. As it is very hard to find RX-Z 5 speed bore in India, I thought of importing it.

If I import the RX-Z cylinder kit from malaysia, what all things in the bike should i alter? should i change the gear box too? If yes should I be importing the GB also?

Ok, i am telling you this one last time, so read very very carefully.

Malaysian RX-Z is no doubt a 132cc bike, but the bore x stroke values are different as compared to Indian RX-Z or RX135. Compare it to Indian RX135 here are the differences w.r.t engine:

Cylinder Kit ~ 20BHP
Head
Crank Shaft
6-Speed Gear Box
Ignition
Engine (Crank) cases
Clutch & Magnet Covers
Carburettor
Engine Bearings
Clutch Bell Assembly
Company fitted EC
Sproketing

In a nutshell, you will need to import the complete Engine of RX-Z 6-Speed & plonk it on your Indian RX-Z Chasis, which btw is not a direct fit.

Now why would anyone want to do such a job!!!!!!!!!!! Its better you import the 2-stroke 6-Speed YZ-125 Engine, atleast it is liquid cooled & will pump many more horses.

On a serious note, please stay away from original 4Y2 RX-King parts, as without proper knowledge & contacts you will be in for a wild goose chase. Good luck.

**sanjithjoseph** · 09-09-2011, 11:13 AM

What we can read from, If a 2stroke bike starts with the single kick itself , even if starting for the first time on a day? What is fine with that bike?

If we are rewinding the coil and changing the regulator for 90/100 light, is it going to have any adverse effect on the bike?

**jd666** · 09-09-2011, 12:42 PM

^^ That the carburettor is tuned well, and the float needle is in a good condition, with the diffuser, jets, slide needle etc are quite clean.

A heavier rating coil will increase the inductive drag on the engine. So ideally if load is being drawn from it ( Like switching the headlight on at night ), will increase the load on the crank slightly ( marginal ).

**dpak89** · 09-09-2011, 01:21 PM

Originally posted by sanjithjoseph View Post

What we can read from, If a 2stroke bike starts with the single kick itself , even if starting for the first time on a day? What is fine with that bike?

If we are rewinding the coil and changing the regulator for 90/100 light, is it going to have any adverse effect on the bike?

also compression is good , plug is good with correct gap!!

**dual disc 200** · 09-09-2011, 01:23 PM

Originally posted by dpak89 View Post

also compression is good , plug is good with correct gap!!

Ji, adding to this is a quick question. What should be the ideal plug gap for a stock 135?

**dpak89** · 09-09-2011, 01:31 PM

i'l check and tell you tomorrow...i have that detailed list of gap measurement for all indian bikes before 2000 in home...cant remember it now!!

P.S : raja na did the adjustment for me lastly!! so he knows it i guess!!

**kb100** · 09-09-2011, 01:41 PM

Originally posted by dual disc 200 View Post

Ji, adding to this is a quick question. What should be the ideal plug gap for a stock 135?

i think its about 0.8 mm you can get a simple tool for setting the gap and do it yourself , the tool is available off the shelf

**SriramEfunds** · 09-09-2011, 02:41 PM

Originally posted by dual disc 200 View Post

Ji, adding to this is a quick question. What should be the ideal plug gap for a stock 135?

Originally posted by kb100 View Post

i think its about 0.8 mm you can get a simple tool for setting the gap and do it yourself , the tool is available off the shelf

I think 2000 and post models they were recommended to use .7mm gap plug. My '98 RX manual states 8HS NGK however, it was found subsequent models were recommended to use 7HS NGK.

**dual disc 200** · 09-09-2011, 03:08 PM

Originally posted by dpak89 View Post

i'l check and tell you tomorrow...i have that detailed list of gap measurement for all indian bikes before 2000 in home...cant remember it now!!

P.S : raja na did the adjustment for me lastly!! so he knows it i guess!!

Originally posted by kb100 View Post

i think its about 0.8 mm you can get a simple tool for setting the gap and do it yourself , the tool is available off the shelf

Originally posted by SriramEfunds View Post

I think 2000 and post models they were recommended to use .7mm gap plug. My '98 RX manual states 8HS NGK however, it was found subsequent models were recommended to use 7HS NGK.

Ok, is it 0.7 mm or 0.8 mm? I'm using BPR7HS

**dual disc 200** · 09-09-2011, 04:12 PM

@ All, thought of sharing a small link of something i Love the most. Yamaha...

Yamaha: Acceleration - YouTube

**karthikdattag** · 09-09-2011, 04:57 PM

Originally posted by sanjithjoseph View Post

What we can read from, If a 2stroke bike starts with the single kick itself , even if starting for the first time on a day? What is fine with that bike?

If we are rewinding the coil and changing the regulator for 90/100 light, is it going to have any adverse effect on the bike?

For the first part:

The carb is tuned for rich setting.
Better performance compared to lean setting.
Very less chances of siezure on long rides, provided 2-T oil is flowing adequately.

My Green 5-speeder starts in first kick even after not using for months together, all thanks to the immaculate jetting & the VM26.

For the second part:

Coil rewinding will only improve lighting. Depends on the number of coils wound, it could be enough to power a 55W or 65W or 90/100W or 110W bulb.
When using a 90/100 ignition, if the bike is in idling & you switch on the headlight, there is huge inrush of current (Inductive loading) & the engine is unable to take such a load, i.e the spark is no longer enough to continue the firing & hence engine shuts off. Halogen bulbs are nothing but inductive loads & hence the stress on the generator. But if the generator capacity is big enough (VA rating), then such a loading will not matter much on the performance.
There will be no adverse effect on engine performace until the timing is played around with. Timing has a major role in overall performance.

On both my 5-speeders i am using custom built Ignition System, on Green 5-Speeder it was a sucess, but on the black the timing was not set right & hence it hampered the performance. We are working on a fresh design now.

@ Ram, forget gap setting, use OE NGK Iridiums IX.

**arunyajaman** · 09-09-2011, 06:30 PM

Originally posted by karthikdattag View Post

Ok, i am telling you this one last time, so read very very carefully.

Malaysian RX-Z is no doubt a 132cc bike, but the bore x stroke values are different as compared to Indian RX-Z or RX135. Compare it to Indian RX135 here are the differences w.r.t engine:

Cylinder Kit ~ 20BHP
Head
Crank Shaft
6-Speed Gear Box
Ignition
Engine (Crank) cases
Clutch & Magnet Covers
Carburettor
Engine Bearings
Clutch Bell Assembly
Company fitted EC
Sproketing

In a nutshell, you will need to import the complete Engine of RX-Z 6-Speed & plonk it on your Indian RX-Z Chasis, which btw is not a direct fit.

Now why would anyone want to do such a job!!!!!!!!!!! Its better you import the 2-stroke 6-Speed YZ-125 Engine, atleast it is liquid cooled & will pump many more horses.

On a serious note, please stay away from original 4Y2 RX-King parts, as without proper knowledge & contacts you will be in for a wild goose chase. Good luck.

Okay, now i totally get it !. Just removed malaysian stuffs from my mind. And thank you soo much for guiding. As told by you, I am gonna take 3KA bore.

And Sir, where can i get 3KA bore, how much will it cost (approx)?

**karthikdattag** · 09-09-2011, 06:35 PM

Originally posted by arunyajaman View Post

Okay, now i totally get it !. Just removed malaysian stuffs from my mind. And thank you soo much for guiding. As told by you, I am gonna take 3KA bore.

And Sir, where can i get 3KA bore, how much will it cost (approx)?

Which place are you from?

**yamdoot** · 09-09-2011, 10:40 PM

Originally posted by arunyajaman View Post

How much will 3KA bore cost?

I have never come across or heard from other 2strokers that an original 3KA bore is available in the Indian market. The original one comes in a proper Yamaha box packing. Refer to JDs thread for the pics. In the market what we get is many different qualities of the 3KA bore ranging from as low as 3200 to 7700! Ofc, the 8200 one is the best i have seen.[other than the original Yamaha one] .

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