leon51274
|
| posted on 12/4/10 at 03:48 PM |
|
|
Bolt on airfilters & ram pipes
Hi All
I've purchased a couple of k&n bolt on filters for my newly fitted dellorto 40's, do i have to have ram pipes as well as filters?
Cheers
Leon
|
|
|
|
|
imp paul
|
| posted on 12/4/10 at 04:01 PM |
|
|
if you want more low down power fit long trumpets or if you want more top end power fit short trumpets its your call hope that helps a wee bit cheers
Paul
|
|
|
deezee
|
| posted on 12/4/10 at 04:21 PM |
|
|
Or do what the do on many bike engines. Have 2 shorter ones on 1 and 4 cylinder and 2 longer ones on 2 and 3 cylinder. Helps balance out the
available torque.
|
|
|
atspeed racing
|
| posted on 12/4/10 at 04:23 PM |
|
|
To run a pair of webers or Dellortos without trumpets is like eating a cheese sandwich but without the cheese!!
Length and diameter does make a difference and running without any is worse as it corrupts the airflow over the aux venturi. This make for a difficult
car to calibrate the fueling on cruise and very low throttle openings.
Hope this helps
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
leon51274
|
| posted on 12/4/10 at 04:28 PM |
|
|
Cheers men, some usefull info there.
Has anyone got some basic jet sizes to get the engine running, its on a 1660 crossflow.
|
|
|
Mal
|
| posted on 12/4/10 at 04:47 PM |
|
|
Jet Sizing
This shoud help you.
http://7faq.com/owbase/ow.asp?HowDoI%2FTuneWeberCarburettors
|
|
|
r1_pete
|
| posted on 12/4/10 at 05:06 PM |
|
|
Here's some flow information, on my 45's I replaced open 60mm trumpets with 75mm K&N's, and 16mm trumpets, 0.5 bhp difference max
on the dyno.
 
Rescued attachment trumpet design.JPG
|
|
|
leon51274
|
| posted on 12/4/10 at 05:18 PM |
|
|
Any idea where i can get ram pipes for a decent price?
Cheers again!
|
|
|
r1_pete
|
| posted on 12/4/10 at 05:38 PM |
|
|
No such thing I'm afraid, I bought 4 used off here for £25, then had to buy the other 2 new, £11 each didn't seem bad untill P&P and
VAT was added, just over £30.
|
|
|
.JPG)
