nmrichardson Posted April 29, 2017 Report Share Posted April 29, 2017 Running standard 64mm bore 4mil long rod stroker crank (373cc) Vforce 4 reeds Pro design cool head with 19cc domes And porting What carbs would work well ? Thinking 36mm ? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
spurdy Posted April 29, 2017 Report Share Posted April 29, 2017 Running standard 64mm bore 4mil long rod stroker crank (373cc) Vforce 4 reeds Pro design cool head with 19cc domes And porting What carbs would work well ? Thinking 36mm ? Sent from my iPhone using Tapatalk There is no correct answer to the question you propose. A stock carb set up properly can support a stock cyl 4m engine. Many different sized carbs will work well. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted April 29, 2017 Report Share Posted April 29, 2017 Dont know the right size, but 36 is too big lol! Quote Link to comment Share on other sites More sharing options...
nmrichardson Posted April 29, 2017 Author Report Share Posted April 29, 2017 Most importantly I should have mentioned this banshee motor is going into a 2 wheeler track bike It will run no airbox and full custom expansion pipes I'm sure the Std 26mm carbs will hold it back a bit ? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted April 29, 2017 Report Share Posted April 29, 2017 Asphalt or Moto track? And what kind of porting? Those are probably the questions that will dictate which carbs to use. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted April 30, 2017 Report Share Posted April 30, 2017 Who ever did the porting and built the pipe should be more then capable of telling you what carbs to run. Odd to come ask random people on the Internet 1 Quote Link to comment Share on other sites More sharing options...
nmrichardson Posted April 30, 2017 Author Report Share Posted April 30, 2017 Asphalt or Moto track? And what kind of porting? Those are probably the questions that will dictate which carbs to use. Asphalt and not sure on the porting specs as the pipe guy is doing the porting ... Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
nmrichardson Posted April 30, 2017 Author Report Share Posted April 30, 2017 Odd to come ask random people on the Internet Why on earth would it be odd to ask people on the internet ? This has to be the biggest benefit of the Internet ....To share knowledge and ask people that have already done a similar thing in the past? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted April 30, 2017 Report Share Posted April 30, 2017 Asphalt and not sure on the porting specs as the pipe guy is doing the porting ... Sent from my iPhone using Tapatalk Pipe guy should be able to answer you. But IMO, some 35mm PWK's would be where I'd start. With wide open asphalt riding you'll rarely miss the little bit of grunt right off idle that small carbs like the stockers would provide. 1 Quote Link to comment Share on other sites More sharing options...
spurdy Posted April 30, 2017 Report Share Posted April 30, 2017 Most importantly I should have mentioned this banshee motor is going into a 2 wheeler track bike It will run no airbox and full custom expansion pipes I'm sure the Std 26mm carbs will hold it back a bit ? Sent from my iPhone using Tapatalk Considering the last info provided, 26 would likely be too small. The missing info is why I said there was no way to give a correct answer. However, you ask an answer to a question on a project that hasn't been done before with custom pipes to a bunch of folks that aren't involved???? There is no right answer still. When new or custom application pipes are done, the motor is typically tuned/set up on a dyno to learn what works best. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted April 30, 2017 Report Share Posted April 30, 2017 Why on earth would it be odd to ask people on the internet ? This has to be the biggest benefit of the Internet ....To share knowledge and ask people that have already done a similar thing in the past? Sent from my iPhone using Tapatalk Because you have a guy building a set of pipes and porting. There literally is no better person to ask them that. Everyone else is just guessing. He should know exactly what his port and pipe combo work best with Sent from my SAMSUNG-SM-G890A using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted April 30, 2017 Report Share Posted April 30, 2017 OP, are you a member on the RZ/RD forums? Don't let folks make you feel like this is an odd build. There are tons of RZ/RD builds out there that have adapted banshee parts. There is plenty of info out there, but you gotta be looking in the right spot. If I were you, I'd venture over there and do some searching. Your combo is quite common. 1 Quote Link to comment Share on other sites More sharing options...
Columbus350 Posted April 30, 2017 Report Share Posted April 30, 2017 I have pretty much the same build as you and I'm going with 28 mm PWk , too big of a carb could actually hurt you than benefit Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
nmrichardson Posted April 30, 2017 Author Report Share Posted April 30, 2017 (edited) Because you have a guy building a set of pipes and porting. There literally is no better person to ask them that. Everyone else is just guessing. He should know exactly what his port and pipe combo work best with Sent from my SAMSUNG-SM-G890A using Tapatalk Haha I love how much confidence you place in people without asking questions yourself Must be rite because pipe and porting guy sayes so Sent from my iPhone using Tapatalk Edited April 30, 2017 by nmrichardson Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted April 30, 2017 Report Share Posted April 30, 2017 Haha I love how much confidence you place in people without asking questions yourself Must be rite because pipe and porting guy sayes so Sent from my iPhone using Tapatalk If he can't offer that then I'd question his pipes and porting. Sent from my SAMSUNG-SM-G890A using Tapatalk Quote Link to comment Share on other sites More sharing options...
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