Even the yamaha which officially brands daytona kits for circuit use tells that using them leads to excessive wear and tare people modification is not oly gaining bhp's but at the cost of excessive wear and tare its better to keep things stock after all it would take more than 3 yrs of R&D by any company to make a new launch

Cool nice work to cleanse the forum and nice humor too in this thread !

on a serious note, how do i get into circuit racing?

Hey guys, what about Quick Throttle's, i am about to install one in my Rx 100, but came across this thread and then dropped the idea of spitfire cables, but will go for NGK for sure if moneygod have mercy on me

Pls tell how'z the idea of installing a Quick Throttle ... ???

I'm going to avoid this pros and cons debate about free flow filters but would like to share my own experiences with it. When I bought my Thunderbird I was not happy with the low end torque of the bike, having ridden a 74 bullet for most of my riding life prior so I thought I'll mod it and got me a k&n, bigger carb and BSA(cheap imitation) exhaust. Of course I paid no attention to rejetting or any of that but I did notice a considerable improvement in acceleration, heck I found the performance improvement quite adequate. Only if I gunned it I could smell burnt oil and the common overheating issues that everyone's familiar with. Fast Forward three years and right now my bike happens to be sitting in the garage as the division of its parts . I've blown two sets of pistons, knackered the crankshaft bearings and blown a hole through the exhaust, did I mention it was a cheap imitation? So you'd think that I'd wisen up and go back to using stock...heck no, the bike is just too much fun to do that. Instead I decided to dig deeper into what makes a bike tick. And that rabbit hole sure does run deep I must say. Up until recently I even flirted with the idea of running a DIY supercharger off the defunct starter gear, I even went to the extent of running a CG simulation to 'previz' the project...hmm, further investigation just made the whole project unwieldy and heavy and just not worth it. but it was loads of fun while it lasted anyway. I might get back to it when I have another bike to ride around on and know enough about what I'm doing but for now its shelved and wisely so.

Its pretty common knowledge that race engines do run free flow systems (filters and exhausts) and equally common knowledge that race engines are stripped down and rebuilt after pretty much every race weekend. They can afford to and more importantly they need to. For us everyday users careless modding can and in my case has proved to be quite expensive but on the flip side its also made me more acutely aware that such endeavours need that much more attention, not to mention education. Its not enough to just fit it and forget it. Things like checking the oil, spark plugs, tightening the chain, etc. have to become a weekly routine and cannot afford to be taken for granted.

I'm not much of a speed freak, I get my kicks out of shaving inches off my pegs, the long hard way but getting my hands dirty with a bike has now become my new favourite hobby, and personally I'm the better for it. Guys like Joel have taken this passion to a whole other level and made a career out of it not to mention history, all the while leaving the factory guys scratching their heads, so go figure.

And oh, yes a tuned RTR can smoke a stock RD, if Joel was behind it, I'll believe it...

Happy modding...

??

dear highbrows
what do you have say about opening up inlet & outlet valves?
&
is there any catalyst for performance enhancement?

I would not comment on anything about the performance, but this part had me rolling on the floor!!!

it's not the dyno..i think you might be talking about the dynojet kit...dyno is the machine in which you check your bike performances...the dynojet kit is a small electronic device used to up the performance...
the jet kits start from 3k...that too they have it for 250cc bikes and above... for any bike make... i too taught about it but lesser then 250 can't handle the power.
for more info http://www.dynojet.com

why is it that every time i make up my mind for a K & N, some new thread or post pops out and i wisely postpone my plan.

ok so, K & N is harmfull in the long run, coz it let too much dirt and dust inside engine. but if we want more air inside without sacrificing the quality of filter ---- what shall we do ????

can drill or cut holes in airbox wall.

Hmm... let me try to answer this in a simple and logic manner. I have been using a hi flow filter for 7,000 kms now. To put it simply, there is no problem with the engine nor have I faced any of the problems that most people claim are due to the high flow filter.

It is true that a stock filter has greater area of filter element thus giving greater area for particle entrapment. These filter elements are also of denser materials. Considering these factors (area and density of filter element) and the rate at which the engine for which it was designed breathes, manufactures recommend a cleaning and replacement period. The recommended cleaning and replacement period is once again just that i.e. recommended. If the usage is in very dusty conditions then you need to clean and replace far more frequently than what is recommended by the manufacture.

Now, lets talk about the high flow filter. These type of air filters have a double whammy. Not only do they have far less area of filter element, in many cases where one type of filter (e.g. plane type) is changed to another (e.g. conical), air flow and routing are drastically changed (though not necessarily good).

Most people fail to take these changes into consideration. With a big reduction in filter element area and density, the increased airflow, requires more frequent cleaning and maintenance. So if your bike has a recommended cleaning schedule of 5,000 kms for stock filter, with a high flow filter it may be as early as 2,000 kms.

Most people also don't appreciate the fact that air flow and routing changes will require fueling changes. If fueling is not proper, a lean running engine will not just heat up, it will also increase the wear of all components drastically. Failure to keep the air filter element cleaned and oil will also lead to premature wear of all components and ultimately engine failure if allowed to keep running.

However, with correct fueling and timely maintenance of the air filter, there should be no problems or complaints of premature engine wear.

To ensure that my bike's filter element is always clean, I have 2 high flow filters. While one is installed in the bike, one is always kept washed and oiled, so that it is ready to be replaced every 2,000 kms. Admitted that it has initially cost me the price of 2 air filters, but in the long run it has kept my bike in great running condition.