Honda 250sx performance mods

**MR ATC** · 07-06-2003, 12:45 AM

megacycle makes a all around cam that will improve your power through out the rpm range yet not require H.D. valve springs which is another thing to consider when getting a cam most cams require them (h.d. valve springs)

**slippy4** · 07-06-2003, 12:53 AM

is there a website for megacycle?

**MR ATC** · 07-06-2003, 01:09 AM

no not that i know of you should be able to get there # from a Honda or other dealership if not pm me and i'll look it up for you (all my stuff is packed away)

**kilabeez0** · 07-06-2003, 02:09 AM

I wonder if I should spend the hundreds to have the frame and such powdercoated? Or if I should do like i did my 110 and

it, still replace all the plastic and seat cover, and make it look nice on a budget, because now that you said it, i'll probably want to go to a 350 or 250r. What are your opinions on that?

**250SX_rider** · 08-12-2003, 05:40 PM

I also have a stock 250SX...its a '85... I have 2 questions :

Is it a lot faster with a K&N air filter ?

Is there some modifications I can do without buying some parts? (like to polish things, and so on...)

Thx

**ATC crazy** · 08-12-2003, 08:39 PM

You will notice a small increase in power with a K&N air filter...but it won't make you win every race...

**bbechtel16** · 08-12-2003, 10:43 PM

Originally Posted by 250SX_rider

I also have a stock 250SX...its a '85... I have 2 questions :

Is it a lot faster with a K&N air filter ?

Is there some modifications I can do without buying some parts? (like to polish things, and so on...)

Thx

Couldn't tell you about the filter, I'm still stock (embarassed). You might want to try to make a vented airbox maybe. Umm.... thats all the freebies that are comming to my mind right now.

UPDATE: I got my 350X lights on tonight, they rock! I did a nice clean install too (at least on the headlight end of things, the battery end is messy). I shall post pics of the trike (new avatar), pics of the mods upclose, and some instructions on how do it. I also plan to stir conversation about a driving lights (high and low both on when you turn on high) mod I'm considering but I didn't go ahead and do it because of fear of overheating the bulbs. Although I found I can get the effect by holding the switch in just the right position.

**Green Monster** · 08-13-2003, 07:00 AM

Anyone got the part# for the K&N filter for our 250SX and where to get one? :shock:

I want to do the K&N filter and Cobra pipe in the near furture. :-D

**bbechtel16** · 08-13-2003, 07:14 AM

Originally Posted by Green Monster

Anyone got the part# for the K&N filter for our 250SX and where to get one? :shock:

I want to do the K&N filter and Cobra pipe in the near furture. :-D

Don't know the part number but I would guess that eBay would be the best place to buy it. I think they have pretty decent avalibility and great prices.

**250SX_rider** · 08-13-2003, 09:26 AM

I just found the # of the air filter at a cycleshop, so look at there:

http://www.motorcycleproshop.com/acc/k&n/honda.asp

For the cobra pipe:

http://www.atvpartsdepot.com/noname2.html

Oh and yesterday i started to modify my battery holder, cuz i'm gonna put a bigger one in it

Cya all

**250SX_rider** · 08-13-2003, 09:34 AM

Does a air filter of a 200X also work on a 250SX ??
If so, just bid for it right there:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=43979&item=2427815 842

**Green Monster** · 08-13-2003, 10:55 AM

Thanks guys!!!!!!! :-D

**bbechtel16** · 08-13-2003, 09:49 PM

Originally Posted by 250SX_rider

I just found the # of the air filter at a cycleshop, so look at there:

http://www.motorcycleproshop.com/acc/k&n/honda.asp

For the cobra pipe:

http://www.atvpartsdepot.com/noname2.html

Oh and yesterday i started to modify my battery holder, cuz i'm gonna put a bigger one in it

Cya all

May I ask why you would want to put a bigger battery in the SX?

**250SX_rider** · 08-14-2003, 11:40 AM

my old one wasn't working anymore, but now my dad found a stock one, so I won't have to modify the battery holder...

oh and i have a question for u guys.
My battery is not reloading good!
I did a multimeter test on the battery, and when my SX wasn't running, it was 12,54V, i started the engine, it was now 12,48V and when i was giving a lil throttle to it, it was 12,52V....on my dad's Fourtrax it climbed to 14V when he gave it some throttle... :?
I changed the left-side cover (with the part on it, of course), and it wasn't working anymore...help me !!!

**bbechtel16** · 08-14-2003, 08:10 PM

Originally Posted by 250SX_rider

my old one wasn't working anymore, but now my dad found a stock one, so I won't have to modify the battery holder...

oh and i have a question for u guys.
My battery is not reloading good!
I did a multimeter test on the battery, and when my SX wasn't running, it was 12,54V, i started the engine, it was now 12,48V and when i was giving a lil throttle to it, it was 12,52V....on my dad's Fourtrax it climbed to 14V when he gave it some throttle... :?
I changed the left-side cover (with the part on it, of course), and it wasn't working anymore...help me !!!

I guess your alternator died?

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