Jump to content

4mm 110 or 115


drap660

Recommended Posts

sounds like those stock cylinders need some more porting.i have some stock cylinder bike that run alot harder than that.if you go to oky on fri nights you must of seen some..102-104mph IN THE 1/4 (NOT TOP END).if all you plan to do is trail ride stick to the long rod,but if your a trail/street racer i would go with a short rod.ive had better results with a short rod on smaller cranks

Link to comment
Share on other sites

I use the bike to trail ride a bit (long cool straights with some turns) Highspeed trails if you will. I dont like tight junjle type trails. The bike right now has a set of wiseco pistons .50mm, 155lb compression with .40 piston to head clearence. Nicely ported cyl's. Bike tops out at 102 with me (260lbs) on it with 16/40 gearing. Alot of locals around here like the short rod setup with spacer, and I have seen them fly, but I keep wondering if I should go with a long rod cause you guys say they are great. I used to be a mechanic at a yamaha dealer here in Miami call R&R jettech. We used to service and repair atv's and jet skis. I have lots of knowledge on any 2 stroke or 4 stroke. I built my banshee myself,porting and all. I have complete access to a full machine shop. I even built a Raptor I had with a 800cc stroker kit and some juice. But, I am completely lost when it come to a stroker on a banshee as far as what works best. The cyl will be match ported to the stroker. Wont the longer rod rev slower

no spacers on a short rod

Link to comment
Share on other sites

sounds like those stock cylinders need some more porting.i have some stock cylinder bike that run alot harder than that.if you go to oky on fri nights you must of seen some..102-104mph IN THE 1/4 (NOT TOP END).if all you plan to do is trail ride stick to the long rod,but if your a trail/street racer i would go with a short rod.ive had better results with a short rod on smaller cranks

 

Stock crank, just cyl porting and a wudruff key. Im also on t5's not CPI's. And you are getting 104 with that in the 1/4. Do you have a shop? I chill on 41st all the time with my radar gun and only see some of chichi's little 4mill's getting 102-105 range in the 1/4.

Link to comment
Share on other sites

Stock crank, just cyl porting and a wudruff key. Im also on t5's not CPI's. And you are getting 104 with that in the 1/4. Do you have a shop? I chill on 41st all the time with my radar gun and only see some of chichi's little 4mill's getting 102-105 range in the 1/4.

you would have to run cpis.you said it all..chichis bikes....i dont have a shop i do this out of my house,but its been many years of trial and error.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...