15111111
|
| posted on 1/3/09 at 04:38 PM |
|
|
air filter v bell mouths
Hi any advantage replacing the air fliter on my 40 webers with a set of bell mouths or whatever u call them chheers Keith
|
|
|
|
|
Snuggs
|
| posted on 1/3/09 at 04:51 PM |
|
|
Possiby, but air filters stop dirt,insects and small mammals being ingested by your engine
----------------------------------------------------------------------------------------------------
http://www.topcashback.co.uk/ref/snuggstcb
Spider pig, spider pig, does whatever a spider pig does.
I doubt therefore I may be.
Luposlipophobia : Fear of being chased by wolves around a freshly waxed kitchen floor, while wearing only socks on your feet.
My mind not only wanders, sometimes it leaves completely!
http://www.venganza.org
http://www.jesusandmo.net/
http://www.snuggs.co.uk
|
|
|
mr henderson
|
| posted on 1/3/09 at 04:52 PM |
|
|
The advantage would be more air flow, especially at engine speeds determined by the length ofthe trumpets, and the disadvantage would be dust etc
getting into your engine
|
|
|
15111111
|
| posted on 1/3/09 at 05:07 PM |
|
|
airfilter v bell mouth
cheers thought that might be the case
|
|
|
v8kid
|
| posted on 1/3/09 at 05:40 PM |
|
|
Why not do both? The bell mouths are to smooth the air flow into the intake and tune it to your selected rpm range. Get bigger filters and fit them
over the top.
Worked OK for me. I'm told there is a power reduction with the filters but at £70 an hour for a rolling road I could not affort to verify it.
Anyone else checked it?
|
|
|
BenB
|
| posted on 1/3/09 at 05:50 PM |
|
|
Not mutually exclusive. You can have trumpets / bellmouths to improve air flow with filters. Whatever you do don't fit the course mesh filters.
They don't stop the dust and fine dirt that does the damage and strange the inlet!!! Worst of both worlds.... IE a short-lived under-powered
engine....
|
|
|
Memphis Twin
|
| posted on 1/3/09 at 06:08 PM |
|
|
Webers absolutely need bellmouths AND filters. K+N do a DCOE filter where the ram pipes (aka velocity stacks, aka bellmouths) fit inside. Without ram
pipes your 40s will perform nowhere near their potential. Airflow through the carbs will be down by a huge amount.
You could also fit sock filters which are cable-tied over the ram pipes.
|
|
|
cliftyhanger
|
| posted on 1/3/09 at 06:31 PM |
|
|
^^wot he said. I know of a guy who had good old fashioned SU's. Stub stacks gave a 5% power increase, same day same RR. Almost free power. And a
decent filter is a must, don't skimp, false economy. I believe K+N or ITG to be about the best. And I reckon socks are not as good as a proper
filter, much smaller surface area.
|
|
|
DarrenW
|
| posted on 2/3/09 at 04:19 PM |
|
|
Ive retained the std Kawasaki bell mouths on my bike carbs and encased the lot in a 100mm deep K&N challenger. Filter is HUGE, but i doubt there
will be any air starvation.
|
|
|
