dawarriorman Posted December 17, 2009 Report Posted December 17, 2009 Been awhile since I've been on here (started a business, sold it, going back to school now), so I have some spare time again. Anyways, I vaguely remember hearing a couple years back that someone had taken a 4mm cub cylinder and decked the bottom to run it on a stock stroke motor. Doing this allowed them to drop the port timings enough that they could port the motor for a wider/lower end powerband. My question is, does anyone remember this, or has anyone else done it. And if so, how did it turn out? Quote
locogato11283 Posted December 17, 2009 Report Posted December 17, 2009 this must have been straight out of the "cubs are not trail friendly post." i think some people have done it, but i dont see the point. if you want a broad powerband, but a cheetah PV motor or have some stock cylinders ported. im sure someone has one though. Quote
RadarRacing Posted December 17, 2009 Report Posted December 17, 2009 Exactly what loco said.you can get a dune/play port on stock cyls and they are very fun to ride and fast. A friends 350 like that with a plus 6 swingarm 10 paddles is a blast to ride and usually holds its own dune racing, runs high 4s at the track. Quote
dawarriorman Posted December 17, 2009 Author Report Posted December 17, 2009 I appreciate your comments, but if you aren't going to answer my question, or are going to reply by saying "you don't want to do that" Then don't reply. I know it would be easier to simply port stock cylinders. I've already had that done on one banshee, and am looking at something different to do for the other one. Quote
okbeast Posted December 17, 2009 Report Posted December 17, 2009 Well sorry if this doesn't meet your thread requirements, but why do this when a stock stroke cub is made? I'm sure the port timings between the stock stroke and 4mm cub are different, not sure if they're exactly different to make it pointless to do what you're saying though since a cub is not ever going to be a low-end cylinder. Just doesn't make sense, like putting a blower on but not the belt... Quote
dawarriorman Posted December 17, 2009 Author Report Posted December 17, 2009 (edited) Well sorry if this doesn't meet your thread requirements, but why do this when a stock stroke cub is made? I'm sure the port timings between the stock stroke and 4mm cub are different, not sure if they're exactly different to make it pointless to do what you're saying though since a cub is not ever going to be a low-end cylinder. Just doesn't make sense, like putting a blower on but not the belt... The only reason a cub is a top end cylinder is because it is already ported for high end power from the factory. The ports are already cut higher in the cylinder than you would want for a lower end port. You can't add the material back to drop the port timing. The point of using a stroker block was you could cut it down to fit a stock stroke machine, and the side effect of doing this was that the ports would be dropped low enough that it could be ported with lower port timing than the regular stock stroke cub comes with. All I wanted was to hear if anyone had any experience with this procedure. I already know that most people think there are better ways to get more hp, otherwise more people would have done this. Edited December 17, 2009 by dawarriorman Quote
Wildcardracing Posted December 17, 2009 Report Posted December 17, 2009 Kevin at HJR is the one who has set them up that way if I'm not mistaken...his screenname on here is KEVSWS6 or you can click on his banner at the top of the page and get him that way. -Brandon Quote
okbeast Posted December 18, 2009 Report Posted December 18, 2009 I'm not sure if he's done one exactly like you're talking. But he's done a 4mm cub and tried to get a longer powerband out of it. I'll probably go that route when I decide to get some porting. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.