Hector Gomez Posted July 27, 2023 Report Share Posted July 27, 2023 hey guys, newbie here. I hope you guys can turn me in the right direction. I’m currently re-sealing my motor and was told by a friend that I should might as well as mods and do a dune port. My question is, if I port my cylinders, do I have to get bigger carbs? I currently have stock carbs with tors delete. What do I need to adjust exactly if I do a dune cylinder port? 99 stock mods: wiseco clutch basket, billet shift star, cool head pro design, lockout clutch, t5’s Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted July 28, 2023 Report Share Posted July 28, 2023 Nope port it, jet it ( per porters instruction) & go. Other than supporting pipes, bumping timing and or compression while there ( per porters instruction) youll see large gains Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted July 28, 2023 Report Share Posted July 28, 2023 No need for larger carbs, oem are good for 65-70-ish hp before they really start to choke the motor. Realistically, if thinking of having port work done, I’d get aftermarket pipes before carbs. Like 375 said, go with something your builder recommends. And on the builder note, please….make life easier on yourself and send it to an ACTUAL builder. We have plenty of them that are recommended on here……don’t just send the cylinders to some dude who says he can port them because he’s close to you. Call em up……the hood ones will ask questions like “what aftermarket parts do you currently have on your bike” and “what type of performance are you looking for” I went through Jeff at F.A.S.T. Racing and he asked me things like my riding conditions, what I wanted in terms of performance, my riding style, what fuels I wanted to run or have access to, current bike setup….. super glad I went him, he kept me up to date on the whole process and even had me call him with compression numbers after i finished the build to verify i wasn’t above what the fuel could handle. aside from port work, I’d also recommend pipes, air filter, true/weld the crank, timing, and possibly having the transfer ports ported to match the dune port (your builder will know what I’m talking about) Quote Link to comment Share on other sites More sharing options...
realdesertkickin Posted July 30, 2023 Report Share Posted July 30, 2023 Rebuilt mine stock OEM except for pipe and coolhead...Perfect tuning on it, she rips, gonna leave it as is.... Quote Link to comment Share on other sites More sharing options...
JerzOutlaw350 Posted July 31, 2023 Report Share Posted July 31, 2023 I rebuilt my 04 for the first time back in October 2022. All I did for my rebuild was a Driveline stock stroke crankshaft that’s true & welded with OEM crank seals. My cylinders are not Ported and are bored .020 with stock head. I’m running Pro X pistons and Pro X complete gasket kit with Mac Daddy Racing complete billet high flow water pump kit with billet water pump gear. My only mods at the moment are pipes, carbs, reeds and air filter. All I can say is she rips for my riding style and I don’t have to worry about the others that I ride with. I’m happy where it’s at and I’m gonna leave it where it’s at… Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted August 1, 2023 Report Share Posted August 1, 2023 You can definitely get the cylinders ported. If it’s already apart it would be worth making a few other easy and cheap upgrades that make the rest of the package run right. You’ll need domes for your set up, and a timing plate would be worth tossing on there. The carbs can be jetted for the new set up. A ported stock bore/stroke set up dialed in could make 60ish hp depending on how it’s set up. Quote Link to comment Share on other sites More sharing options...
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