Dome size

[utwakeboarder2002]

Long time reader first time poster. First of all thanks to all those who have given ideas and advise through other posts. Best banshee site out there.

 

OK here is my question. I found that I had a broken shirt on one of my pistons. The bike is a 2000 and the engine has never been gone over. So i decided to take the time and replace the pistions, berings and bore it over .020. Now as you can see in the picture when the skirt went it messed up the cool head domes. Currerenly they are 19s. Will I see gain by changing the size since I am needing to buy new ones anyway?

[AKheathen]

what fuel, elevation and rpm setup? you may see more topend with less compression, or you can see more power if you are running too much octane, or you may just be where you need to be.

[toytech]

Long time reader first time poster. First of all thanks to all those who have given ideas and advise through other posts. Best banshee site out there.

 

OK here is my question. I found that I had a broken shirt on one of my pistons. The bike is a 2000 and the engine has never been gone over. So i decided to take the time and replace the pistions, berings and bore it over .020. Now as you can see in the picture when the skirt went it messed up the cool head domes. Currerenly they are 19s. Will I see gain by changing the size since I am needing to buy new ones anyway?

 

welcome to BHQ

 

 

if it ran good the way it was and you don't want to change fuel or jets put 19s back in it

[utwakeboarder2002]

what fuel, elevation and rpm setup? you may see more topend with less compression, or you can see more power if you are running too much octane, or you may just be where you need to be.

 

Right now I use pump gas but not opposed to changing it will make a difference with changes. I ride at 5,000 ft 95% of the time and its dune riding. Changing the jetting right now is not a problem because everything is apart while getting it bored. I am running stock carbs (TORS removed) and will be adavancing timing when it goes back together. It has FMF Gold Series Power core pipes. Hopefully that helps.

[firebanshee]

Right now I use pump gas but not opposed to changing it will make a difference with changes. I ride at 5,000 ft 95% of the time and its dune riding. Changing the jetting right now is not a problem because everything is apart while getting it bored. I am running stock carbs (TORS removed) and will be adavancing timing when it goes back together. It has FMF Gold Series Power core pipes. Hopefully that helps.

Since you are at 5,000ft i would go to a 17cc or 18cc dome and bump your timing to +4. You could still run pump fuel and not lose any over rev. A 17cc dome would put you at about 155 compression at 5000 ft.

[AKheathen]

x2, i'd do 18, or 19's with advanced timing for an unported 20 over