What's the story with airboxes?
Are they only to reduce induction roar?
Do they have a panel filter inside?
Are they worth fitting?
Will my jets and needles have to be changed?
Pat...
panel filter inside.
allows a bigger panel filter i guess, allows more air to flow through and the engine to breathe easier i suppose
I think it depends on the year of the engine, the modern engines have less restrictive airboxes. The older engines are more restrictive so a sausage /
foam filter will give better airflow and potentialy more power, but your jets / needles will need changed.
The air boxes do indeed contain a filter and reduce induction noise.
Hope this helps.
Cheers
Ian
quote:
Originally posted by Avoneer
What's the story with airboxes?
Are they only to reduce induction roar?
Do they have a panel filter inside?
Are they worth fitting?
Will my jets and needles have to be changed?
Pat...
Andy Bates / AB Performance do a custom built airbox for carbed blades. Its not cheap and it can be a pain to install because it actually encloses the
carb bodies inside the airbox, but most of the RGB class C racers swear by it.
Chris
I was thinking standard blade air box.
Just wondering if i'd have to alter the needles/jets and if the only benefit was the noise.
Pat...
changing the jets /needles totaly depends on what intake system you are running now
blade filter is wee easy to fit just turn it upside down
tony
Air boxes can reduce noise. They are usually tuned these days as well to fill in gaps in the torque curve. Stock boxes can be a bit restrictive so you might have to rejet. Or you could build your own box and get it right.
I have a sausage filter and needles/jets to suit at the mo.
Pat...
Im pretty sure you'll need to rejet back down. My mate Rhodri used a stock airbox on his Megablade and he had to drop jets compared to his open filter settings. It improved the mid-range a bit but lost some top end. He's now got an AB Performance one which he says retains the mid range of the stock airbox and gives good top-end.
When I was getting my car rejetted on the rollers at Holeshot, it was suggested that it's not good to go back to an airbox without going back to
stock carbs.
Reason being that when you fit a dynojet kit, one of the steps is to drill out some holes in the slider. I was told that because of this, even if you
put corect size jets etc in then you'll never get it tuned quite right. Something about more turbulent air without airbox requiring those holes
embiggening.
Can't remember the full technicalities of it, but I assume Holeshot know what they're talking about!
So basically if you want to quieten with a stock box, I'd get a stock set of carbs (or at least sliders) at the same time.
im running the stock airbox on mine atm, and its nice and quiet. I took it off to see what it sounded like, but tbh i didnt like the induction noise of the throttle boddies! They sound so much different to carbs!