Stock machine adding FMF Fattys

[banshyeeha]

Hi guys

 

I am based in the UK and new to your great forum.

 

Just had my FMF Fattys and Power Core 2 silencers delivered from the USA - second hand but great condition.

 

My question is that I would like to fit these tommorow and ride but getting hold of jets in the UK is near impossible, I have some 270's ordered but they haven't arrived yet.

 

Temperature tommorow will be approx 15 degrees and I have a completely standard 2000 banshee.

 

Will I be OK to ride my bike tommorow with the standard jets and my new exhaust system or will I blow her up !

 

When I ride tommorow it would be for say 15 mins and then a break of 15 mins on and off throughout the day, mainly high revving in 2nd and 3rd gears around a small MX track.

 

Any help would be greatly appreciated.

 

Thank you in advance.

[txblueshee]

It's bad to ride without jetting to start with then... much less pinning it around a mx track. The 270's might be ok for warmer weather (depending on your elevation) assuming you don't have any intake mods. I'm at 800ft., with pro-design intake, reeds and fatty's. I run 310's.

 

Mike

[banshyeeha]

I dont have the 270's yet, I was going to ride with the standard ones (not sure what standard is)

 

Will it do any damage or will it just not ride well?

[txblueshee]

You'll be cleaning your case for weeks after you shatter the pistons from running it lean.

 

 

Mike

[banshyeeha]

Oh OK, point taken thanx

[Ducman]

I wouldn't run it with the Fatties and stock jetting and it wont hit the band and rev well under a load anyway. (starting and adjusting the air screws is ok)

 

The typical main size that come on a stock banshee are #200s. If you put the pipes on, install the 270 mains, remove the airbox snorkel but leave the air box lid on it should be fine. The stock pilot jets #25's may be a bit small but should work. You will probably want to turn the air screws to within 1 or 1/2 turn of seated (all the way in) to richen up the pilot circut. With small pilots that are running a litle on the lean side, richening the needle (move the clip one or 2 slots away from the blunt end) will help compensate.

[00BANSHEE]

Ducman is right on. The Fattys usually ship with a 260 main from FMF. When I put them on and installed the 260 mains I had to remove the snorkle but leave the airbox lid on. It ran perfect. This is at ~1400 elevation.