owmyeye Posted November 28, 2006 Report Share Posted November 28, 2006 Port it. What size domes do you have? Quote Link to comment Share on other sites More sharing options...
Washburn Posted November 29, 2006 Report Share Posted November 29, 2006 Get your engine to a reputable builder and get it ported. Bigger carbs are worthless on a stock engine. Buy the whole package bore(30-45 a hole),pistons(150 for both),port (250-400) and tell them to send it to you like you sent it to them all put together. Alot of builders will do a complete teardown and assembly for like 200-275 with new gaskets and bearings. While you in there you may as well get your crank trued and welded thats like 60-80 bucks. Also depending on the port job you get you can get your stock carbs bored out to 28mm for Ide guess around 100 bucks. It adds up quick but speed CO$$$$T$$$$. Espically if you dont do your own work Quote Link to comment Share on other sites More sharing options...
dajogejr Posted November 29, 2006 Report Share Posted November 29, 2006 Actually, some builders include the bore with a port job. Builders prefer to port first, then bore and chamfer just in case the "slip" while porting. Hey, no one is perfect...and it can happen to anyone. Quote Link to comment Share on other sites More sharing options...
Washburn Posted November 29, 2006 Report Share Posted November 29, 2006 Actually, some builders include the bore with a port job. Builders prefer to port first, then bore and chamfer just in case the "slip" while porting. Hey, no one is perfect...and it can happen to anyone. I dident know that. Sure mistakes can happen thats why I am sending mine to someone who ports the type of port I want everyday. Portings not THAT diffucult but Ide rather spend the couple bucks instead of trying myself making the ports to big messing up the shape and timing hights then buying all new cyls. Plus, truthfully my hand is not as steady as my builders. If I decide to rebuild my LT250R engine Im going to port it myself though. My cousin did his first port job on his CR250R and he can smoke a 500 :woot: Quote Link to comment Share on other sites More sharing options...
rynb15 Posted November 29, 2006 Author Report Share Posted November 29, 2006 OK, guess ill just leave my bike alone untill its time for a rebuild. Thanks for all the replies. At least now i know what to do when the time comes. :beer: Quote Link to comment Share on other sites More sharing options...
dajogejr Posted November 29, 2006 Report Share Posted November 29, 2006 Yeah, not trying to sound cocky or like a jerk...but, I think any money invested in your bike now other than porting/fresh top end will be a minimal gain at best. Bolt ons only take you so far, you're there. Porting will make that a WHOLE NEW bike, period! Quote Link to comment Share on other sites More sharing options...
banshee tuner Posted November 29, 2006 Report Share Posted November 29, 2006 Get your flywheel lightened. Quote Link to comment Share on other sites More sharing options...
rynb15 Posted November 30, 2006 Author Report Share Posted November 30, 2006 sorry to bring this back up. Now if i did the 15t front sprocket how much would this help? Would i loose low end power for trails? Also how do i lighten the flywheel? anything that is cheap and would help out i will do. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted November 30, 2006 Report Share Posted November 30, 2006 Yes, you'd lose low end for trails but gain top end with a 15 tooth, not what you need for trails. Lightening the flywheel will help in trails. prices range, 35 to 60 bucks plus shipping.... Quote Link to comment Share on other sites More sharing options...
csrmel Posted November 30, 2006 Report Share Posted November 30, 2006 enjoy the motor how it is now. afterall its a banshee and has plenty of power even before porting. once youre due for a rebuild, send the cylinders out to get ported. they will give you more power than all youre bolt ons put together. Quote Link to comment Share on other sites More sharing options...
scooter Posted November 30, 2006 Report Share Posted November 30, 2006 im not trying to steal this thred but if you do a dune port can you still run the stock carbs?and if not what carb would work good with a dune port or mild dune port ? Quote Link to comment Share on other sites More sharing options...
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