the age old dilema for BECs if u wanna do trackdays need to get noise down, problem is how do I get a non OEM airbox to fit under the bonnet to address induction noise?
I have 38mm carbs on my 893cc blade that has so far run sweet with a sausage air filter. This got me thinking about canting carbs down a bit to lesson the angle so a larger airbox will fit, the 4 rubber boots that hold the carbs to the head are straight rubber tubes but I can't find 38mm angled ones on the interweb only 40mm angled ones for a 2002/2003 R1, question is will it affect performance of the engine or the operation of the float bowl level if I fit these angular ones & secondly will I be able to do the jubilee clips up enough to take out the 2mm difference without the carbs acting as though they're sitting on a slab of jelly???Yamaha YZF-R1 YZFR1 2002 2003 Carburettor Carb To Cyclinder Head Rubbers Pack 4

Are they Deffo angled?

As I'm sure they are straight the same as my early carbed R1 engine.

Could be a generic picture used on Ebay,also the listing details are incorrect as the 2002/2003 is fuel injected.

YAMAHA YZF R1 2002 2003 02 03 5PW RN09 THROTTLE BODIE RUBBER CLAMPS INTAKE DUCTS

I originally used a foam sausage but was never happy with it. So I fitted the original Blade air box by turning it upside down it then has clearance under the bonnet and because it is designed for that engine it's perfectly balanced and I felt it gave the engine a better performance. I also ran two flexible pipes from the intakes and up to a bracket to take in cool air from the bonnet scoop and fitted a s/steel sleeve with a mesh on the opening I painted mine silver and put a K&N sticker on it just to bling it up a bit. Looks good and works well and is easy to fit.

Ok thanks for info, anyone know of any other angled 38mm rubbers used on other bikes that I could consider?

How much room have you got above cars to bonnet?

If you can't do as above and rework the blade box a custom made one would be better imo than altering the carb angle.

This is a picture of the carb rubbers I have used fro my ZX6R carbs. Ebay a couple of years ago.

38mm.

Angled and grooved which helps keep them on. These look similar....

Kawasaki GPZ 900 R ZX900A1 1984 Carb Carburettor to Head Rubbers Pack of 4


carbs

Or fluro lined silicon hoses but you will need Miklor clamps and fixed supports for carb to manifold/engine to stop them slipping off.
I have run carbs flat and level with no issues

Ok , i will look for some silicone hose elbows just to bring the carbs down a bit

[Edited on 18/12/16 by andyfiggy2002]