Quote:
Originally Posted by Douglass
MegaDan: You have listed in your mods a CRF230 Exhaust from Ebay, do you know if this will fit the Apollo Too? If so, did you do it for performance, or to remove the Cat/emission stuff?
Is what you got something like this? Thank you for all your help!
https://www.ebay.com/p/Aluminum-Exha....c100005.m1851 |
Yep, that's the exhaust I used. The only reasons I used that exhaust were mainly to de-cat the system and get a more free flowing muffler - all in the name of performance. I could have just as easily modified the stock exhaust as well, but for about 100 bucks for a stainless steel exhaust, it was hard to pass up. It's also quite a bit lighter than the stock exhaust was on my Hawk,
As far as working on your Apollo, it might work, but I do believe the 250cc Apollo bikes have a pretty decent exhaust from the factory. It is also a slightly different shape, so I couldn't tell you for sure if it would mount up the same. Hopefully another Apollo owner can have more answers for you.
As far as your interest in the carb and getting a smoother idle and better running bike. If you can change the jets on the factory equipped Keihin clone, then you can re-jet it and achieve the same results. None of these Chinese bikes come jetted very well.
If you decide the Mikuni is just what you want to do, then I would start you off with a 30 pilot jet and 115 main jet. Being at basically sea level, and given that particular motor, this would be pretty close. Obviously, you would still need to dial in the proper jet sizes to the engine, but I am a firm believer in being what I call "Safely fat". The Pilot jet is going to be the easiest to dial in first via. the idle mixture adjustment. With the engine up to temp, if it takes less than 1 turn out on the idle mixture screw, then step down to a 27.5. If you get a good steady idle between 1 and 2 turns out on the mixture screw, then it is just about perfect.
Once you have the pilot jet figure out, and the needle set in the 3rd or 4th position, you can then work on dialing in the main jet. A plug chop with a clean spark plug will reveal how the main jet is doing.
My only real suggestion would be to break in the engine first before trying to get a new carb dialed in. At least put around 300-500 miles on the motor.