Bored out stock carbs and billet intakes finally came today! First impression, they look very well done, they are blended much better than stock. The slides are polished, and supposedly drilled, I have not yet opened the top to see.
Here is the inlet side, you can kind of see the difference in the size and swirl.
I borrowed this pic from Toonces air filter thread for comparison....
Intake side, increased from 35.5mm to 38mm, polished and swirled for velocity
Here is the manifold side, bored larger by 2mm and with a new butterfly valve
and here it is opened up
a side by side manifold comparison, nice new billet!
another angle
and the insulated piece for between the head and the new manifold for heat transfer.
a complete setup
nice, clean job
Unfortunately, the boot to actually mount the carb was forgotten, so it's on the way, or else these would already be on my bike. When I change them out, I will take side by side pics for everyone to see, discuss, admire, whatever
. As I said in a few other posts, these carbs were flow tested at 234 cfm's, up from 199 stock. They also tested on a dyno, showing a 5-6 hp increase on a
bone stock bike with
no performance upgrades of any kind. Not even air injection removal. I'm hoping to get mine on a dyno soon, it may be a few weeks or more though. Hopefully I get at least that much of an increase. This should turn out to be a completely affordable option for carbs for anyone looking to upgrade. Fast Fred is offering these for $360, and I think he has cores, so there would be no down time. I don't know if the manifolds are included in that price, I have a different deal worked out with Freddy, which includes reground cams that are coming my way soon. Like I said, As soon as the other parts come in, I will take the stock carbs off and take side by side pics for comparison, hopefully early next week.
