Jump to content

What size jets to start with


mangosmoothie

Recommended Posts

Hey guys. Just picked up a 93 banshee. I bought from a guy that lives at sea level in phoenix. I took it for a short rip up the street just to make sure it ran. I also ride a 130 whp speed triple so I really didn't know/don't know what I should expect power wise hopping on a banshee. But it seemed like it ran well. I didn't notice any bogging. I live around 5,000 feet. I plan on riding in areas anywhere from 4000-7000 feet. 

The PO didn't know much about the bike. He had like 3 2 stroke dirt bikes, fourtrax 250, quadzilla, etc. It was a very impressive garage lol. He said he bought the banshee as it was and never had to mess with it. He said when he bought it, the top end was just re-done. But he wasn't sure about any porting or anything. From what I can tell, I have FMF gold pipes (no other markings, just says gold) and silencers I can't identify. Big pro design foam filter and plate with the airbox lid removed. I can't tell if the reeds are stock or not. I traces of motoseal or some kind of gasket maker so I don't want to pull them off if there isn't a problem. I pulled the stator cover and it does not look like timing was changed or anything. Looks like the stock plate behind the flywheel. 

So anyway, the carbs were leaking gas out the overflow when I shut the bike off. I pulled them off to see what was up. I noticed the main jets were 330. That seems like a big jet for FMF pipes and a filter mod. Should I just start with those and do a plug chop when I get everything back together since I don't know the history of the bike? Seems like most people with these mods aren't even in the 300's for jet sizes. 

Edited by mangosmoothie
Link to comment
Share on other sites

On 9/2/2020 at 12:23 PM, Eric_C1 said:

Yep, if PO said that's what hes been running in it for awhile I'd just plug chop it there and see what it's at, might have port work done to it if it's not bogging with that fat of a jet in it. do a leak down test too.

I got further into the carbs. Has a 30 pilot jet, stock needle position 2, and pilot screw 1 and 1/8 out. Seems like a fat set up if it's just a pipe and filter lol. 

Link to comment
Share on other sites

  • 3 weeks later...

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...