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Hi Friends,
I recently did a complete Engine work on my Unicorn and it has got almost all new parts in the engine include the Bore and Piston bought from Honda Showroom, I did almost 10000 Kms after engine work and did not exceed 60kmph for first 5K Kms and 70-80kmph for second 5k Kms. Still I was not satisfied with the performance and Bike was over revving and it was struggling to cross 80kmph, engine noise was too high. Well when I consulted the mechanic one who did the Engine work said that the new Bore-Piston bought from Honda Showroom belongs to new edition of Unicorn which may be not that powerfull as the old unicorn was (2005 model initially when Uni was launched).
Yet we again decided to do a Re-Bore using old Bore which came with along with the bike, Bore was in decent condition and this time I was thirty for POWER and we did a re-bore with 200cc piston with bigger Sleeves, no engine work involved. Bike has Stock carburator, Stock Exhaust.
I took the delivery of bike on 02-05-2009, started riding back to hosur from chennai on 03-05-2009 at 11AM, did visit MMSC there was a Apache Event. Did not spend much time as I had long way to ride. I did maintain speed of just 50-60kmph during my ride to setup the engine, stopped for 10min for every 50kms. Reached Home safe at 6PM.
The compression was tooo high and kicker was very tight, could not start the bike easily, hence I replaced with a complete custom Free Flow
exhaust. After installing free flow bike had no difference in pickup, kicker became bit smooth was able to start the bike in 1-2 kicks.
I ride to White field from hosur every day to my office which is 40Kms oneway.
On 08-05-2009 I started to my Office and after 30Kms of ride Bike suddenly turned OFF while riding, I was shocked. Spark, Bore,Bore head, Exhaust were dam very very hot, Speed was just 60kmph. It took 30 Min to start again once the engine is bit cooled (Engine Oil used - Motul 20W-30).
Bike continued to turn OFF for every 10kms of ride. Today morning I decided to put back the new Bore/Piston which was bought earlier and installed it with stock exhaust. Bike was very smooth, engine starts revving high after 80kmph, again bike turned OFF today while coming to office while riding speed was just 60kmph. When I called my mechanic in chennai he said if the bike is turning OFF even with two good Bore's then issue could be with something else so try testing the bike with known good sleeve piston, CDI unit, Magnet , Air filter Box one at a time.
Iam really in a very bad sutuation now I cannot be without my bike because thats my only means of transport to Office everyday. Now Iam
scared to drive 80km a day. Please help me I need all your valuable inputs.
I recently did a complete Engine work on my Unicorn and it has got almost all new parts in the engine include the Bore and Piston bought from Honda Showroom, I did almost 10000 Kms after engine work and did not exceed 60kmph for first 5K Kms and 70-80kmph for second 5k Kms. Still I was not satisfied with the performance and Bike was over revving and it was struggling to cross 80kmph, engine noise was too high. Well when I consulted the mechanic one who did the Engine work said that the new Bore-Piston bought from Honda Showroom belongs to new edition of Unicorn which may be not that powerfull as the old unicorn was (2005 model initially when Uni was launched).
Yet we again decided to do a Re-Bore using old Bore which came with along with the bike, Bore was in decent condition and this time I was thirty for POWER and we did a re-bore with 200cc piston with bigger Sleeves, no engine work involved. Bike has Stock carburator, Stock Exhaust.
I took the delivery of bike on 02-05-2009, started riding back to hosur from chennai on 03-05-2009 at 11AM, did visit MMSC there was a Apache Event. Did not spend much time as I had long way to ride. I did maintain speed of just 50-60kmph during my ride to setup the engine, stopped for 10min for every 50kms. Reached Home safe at 6PM.
The compression was tooo high and kicker was very tight, could not start the bike easily, hence I replaced with a complete custom Free Flow
exhaust. After installing free flow bike had no difference in pickup, kicker became bit smooth was able to start the bike in 1-2 kicks.
I ride to White field from hosur every day to my office which is 40Kms oneway.
On 08-05-2009 I started to my Office and after 30Kms of ride Bike suddenly turned OFF while riding, I was shocked. Spark, Bore,Bore head, Exhaust were dam very very hot, Speed was just 60kmph. It took 30 Min to start again once the engine is bit cooled (Engine Oil used - Motul 20W-30).
Bike continued to turn OFF for every 10kms of ride. Today morning I decided to put back the new Bore/Piston which was bought earlier and installed it with stock exhaust. Bike was very smooth, engine starts revving high after 80kmph, again bike turned OFF today while coming to office while riding speed was just 60kmph. When I called my mechanic in chennai he said if the bike is turning OFF even with two good Bore's then issue could be with something else so try testing the bike with known good sleeve piston, CDI unit, Magnet , Air filter Box one at a time.
Iam really in a very bad sutuation now I cannot be without my bike because thats my only means of transport to Office everyday. Now Iam
scared to drive 80km a day. Please help me I need all your valuable inputs.
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