PDA

View Full Version : Performance Air Filter



Royzx
07-02-2008, 04:41 PM
I wanna buy a performance air filter for the noise ;p


I have a standard carb, 12mm, I think the diameter is 36 or 32, does anyone know which it is?


Thanks,
Roy.

bourney2007
07-02-2008, 05:21 PM
i have a 35mm K&N style performance filter that i'm selling.

RS01
07-02-2008, 05:32 PM
Search hp air filter on ebay ;)

Royzx
07-03-2008, 04:42 PM
Took my carb off before to clean it and noticed i had a .74 main jet with just de-restriction.


Also, i've noticed when i switched my choke on once i got a lot more power from the bike, this normal?


Thanks,
Roy.

keeton.
07-03-2008, 04:49 PM
depends what the whether was like.



keeton

Royzx
07-03-2008, 04:50 PM
Normal every day weather, has done it every time i have tried it.

luigi1991
07-03-2008, 05:05 PM
plug chop!

BigB
07-04-2008, 05:11 AM
no point with "performance" air filter, all bikes in general run much better with the standard airbox

Royzx
07-04-2008, 01:12 PM
the spark plug reads a chocolate brown colour, just wondering why its more powerful with the choke on.

Thanks,
Roy.

shaun
07-04-2008, 01:54 PM
dno if im right but it cuts off the air intake? meaning just fuel is being burnt. 100% fuel rather thn air and fuel...

The choke restricts the air flow it doesn't fully stop it.

Royzx
07-04-2008, 02:09 PM
Do i need to rejet my carb then?

toth
07-04-2008, 02:14 PM
Yes, bigger jet.

Royzx
07-04-2008, 02:26 PM
Would the air filter bolt straight onto the carb or onto the rubber flange inside the airbox?

shaun
07-04-2008, 04:10 PM
Would the air filter bolt straight onto the carb or onto the rubber flange inside the airbox?

Straight onto the carb

RS01
07-04-2008, 06:52 PM
Would the air filter bolt straight onto the carb or onto the rubber flange inside the airbox?

Yeah if you get that one i told you too :)
thats what ive got, only gone up from a .62 to a .65 seems ok

Royzx
07-05-2008, 11:34 AM
Anyone got a rough idea of jet size to sort my (getting more power with choke) problem? .74 atm.

oribaka
07-05-2008, 03:00 PM
Buying a set of a range of jets is piss cheap (only 15 quid or so) so just picking a starting point like 85 or something and working your way from there is easy.

Royzx
07-05-2008, 03:06 PM
Any idea where u can pick up a jet kit?

shaun
07-05-2008, 06:32 PM
Any idea where u can pick up a jet kit?

The internet or your local aprilia dealer.

Royzx
07-05-2008, 06:59 PM
The jets 6mm or 5mm for the PHBN 12 carb?

shaun
07-07-2008, 09:15 AM
The jets 6mm or 5mm for the PHBN 12 carb?

I'm sure it's the same as the SHA so I should imagine it's the 5mm, get a ruler and measer the length of the thread.

Nickmasson
07-07-2008, 12:33 PM
If you want noise then just drill your airbox, theres no point getting an air filter tbh

bourney2007
07-07-2008, 02:46 PM
If you want noise then just drill your airbox, theres no point getting an air filter tbh



:plus::plus:

Royzx
07-07-2008, 03:07 PM
Still means i'd have to upjet.

bourney2007
07-07-2008, 03:14 PM
Still means i'd have to upjet.


Yeah but the money saved on the air filter can be used to buy the jets.

Royzx
07-07-2008, 03:38 PM
I suppose :p found a jet kit for 12 odd euros, just gotta measure the size of the main jet. Typical english weather doesn't make that easy lol.

bourney2007
07-07-2008, 04:05 PM
I suppose :p found a jet kit for 12 odd euros, just gotta measure the size of the main jet. Typical english weather doesn't make that easy lol.


Why not? you've got a garage havn't you?

The weather is terrible though. Especially today. Absolutley thrown it down for hours here, and we've had some hail.

Royzx
07-07-2008, 04:25 PM
Nope, i've got a shed which just about fits my bike in lol. If I need major repairs I take it to my fathers house in his garage :p

bourney2007
07-07-2008, 04:27 PM
Nope, i've got a shed which just about fits my bike in lol. If I need major repairs I take it to my fathers house in his garage :p

Ahhh.. Right, fair enough

Shaunyboy
07-07-2008, 04:30 PM
TBH, its not worth it, you loose performance, and you use alot more fuel, to compensate for the extra air coming in, to get the performance u had at the beginnig.

Also on a small 2 stroke engine, you have a back pressure when the reeds snap shut, and with an open air filter, all that back pressure escapes.

RS01
07-08-2008, 07:37 AM
Yeah doesnt really use much more fuel tbh. Maybee on a car

Rs50_2007kris
07-08-2008, 09:11 AM
nothing special i don't think