Fmf flange size

[Gavlikesblaster]

Hey I just got an entire fmf exhaust system and it didn't come with a flange so does anyone know the diamiter of the header?

 

[jus_me]

Should be able to order one right from fmf ?

 

[Gavlikesblaster]

Should be able to order one right from fmf ?

Probably but I would rather just make one myself

 

[Markblaster]

Are you talking about the flange that bolts to the engine. Like this:

 

[Gavlikesblaster]

Are you talking about the flange that bolts to the engine.

Yes. Also do you know if I need to change my jetting? I'm gonna from a DG

 

[Markblaster]

I Have a FMF gold series on my 03 blaster. I will go get some measurements. Back soon.

 

[jus_me]

Yes you will most likely need to up your main jet. Do you know what it is now ? Any other mods you have ?

 

[Markblaster]

Plate part that mounts to engine is 85mm x 58mm and is about 4-5mm thick. 2 holes 70mm apart center to center, pipe part is 23mm long x 38mm OD x 35mm ID

 

[Gavlikesblaster]

Plate part that mounts to engine is 85mm x 58mm and is about 4-5mm thick. 2 holes 70mm apart center to center, pipe part is 23mm long x 38mm OD x 35mm ID

Thanks man

 

[Gavlikesblaster]

Yes you will most likely need to up your main jet. Do you know what it is now ? Any other mods you have ?

I'm think it has a 230. And no mods that effect the performance

 

[jus_me]

Whats your temps and altitude ? Air box lid on i presume ? You will need to plug chop to get spot on, but i myself or others on the forum will ne able to get you in the ball park.

Ohh,,,, and make sure you have no air leaks. Even an exhaust leak can make jetting eratic.

 

[Gavlikesblaster]

Whats your temps and altitude ? Air box lid on i presume ? You will need to plug chop to get spot on, but i myself or others on the forum will ne able to get you in the ball park.

Ohh,,,, and make sure you have no air leaks. Even an exhaust leak can make jetting eratic.

Airbox lid is on. My temp is around 60 to 75. Altitude is around 700