I've been thinking of ways to increase the performance of my motorbike without having to buy after market parts. I use it for booting around up in cottage country, And I would realy like to give it a little more kick. I can't spend more than $200 canadian on it, and all of that is going to parts for rebuilding the bike, like gaskets, washers, bolts and bushings.
I can't afford anything aftermarket at this point and I realy don't want to install aftermarket parts on such a classic bike. (Its a 77' honda)
The bike has a fairly flat torque curve, I'd like to make it more of a peak near the optimal range which is around 7000 to 10000 RPM.
It redlines at 10,500, or so I've been told. I don't have a tack to tell.
The bike has a close ratio low speed gear box, so after first, the power down low does nothing. and since it already rockets through first and almost rockets through second, I think I can sacrafice a little low end acceleration for some better performance at higher gears.
By rocketing through first I mean I can literaly shift to second and take off from a standing start almost as fast as a bigger bike.
It's only got a small 75cc engine and yet it launches off the line faster than my friends 125cc.
Things I have already considered, and may do are:
-Advance the spark timing, this will increase high rpm performance, but decrease low rpm performance. basicaly what I want.
-Run a less restricted exaust to reduce back pressure, again, more high rpm power, less low.
I think there is more I can do, but I cant think of anything else.
Anyone here done bike tuning? Is there anything I can do to give it more kick without spending the money on aftermarket parts?
I want to balance all of these changes so that I don't risk damage to the engine, I even have the shop manual and my boss to help me out
I can't afford anything aftermarket at this point and I realy don't want to install aftermarket parts on such a classic bike. (Its a 77' honda)
The bike has a fairly flat torque curve, I'd like to make it more of a peak near the optimal range which is around 7000 to 10000 RPM.
It redlines at 10,500, or so I've been told. I don't have a tack to tell.
The bike has a close ratio low speed gear box, so after first, the power down low does nothing. and since it already rockets through first and almost rockets through second, I think I can sacrafice a little low end acceleration for some better performance at higher gears.
By rocketing through first I mean I can literaly shift to second and take off from a standing start almost as fast as a bigger bike.
It's only got a small 75cc engine and yet it launches off the line faster than my friends 125cc.
Things I have already considered, and may do are:
-Advance the spark timing, this will increase high rpm performance, but decrease low rpm performance. basicaly what I want.
-Run a less restricted exaust to reduce back pressure, again, more high rpm power, less low.
I think there is more I can do, but I cant think of anything else.
Anyone here done bike tuning? Is there anything I can do to give it more kick without spending the money on aftermarket parts?
I want to balance all of these changes so that I don't risk damage to the engine, I even have the shop manual and my boss to help me out