What kind of needle?

[WesleyB]

Hi,

what kind of needles I need for my twin carburetors? Is there a way to find ?
When I drive with my normal air house everything was ok, now I have put K&N filters kone on and he drive ok but not so good as before.

My engine is a 998cc on my Austin Cooper 1967
I have a electronic ignition (http://www.csi-ignition.nl/en/home.html) on the engine

Cab anybody give a advice or must I go to a rollerbank

Kind regards
Wesley

[smithyrc30]

If the engine is standard, with just the K&N fittes, try a pair of E3 needles with Blue springs (std are red).

[WesleyB]

Hi,

thx for replay
Yes the engine is standard, original Cooper with the twin HS2.
No there is GX needle in (original in)
I didn't know there are different colours in springs, now I know
The exhaust is a RC40

cheers

[Daveislandblue66]

Vizard's book is a good starting point. Once you've a rough idea of which needle to start with, this handy lookup is good for comparing needles. And if you are having trouble sleeping!

http://www.mintylamb.co.uk/suneedle/

[Fanfaniracing]

Hi Welsey!

On my old 998 Cooper Engine, now fitted to the white Mini wich participated on the Winter Rally
i have this Setup:

Engine: 998 standard D-Shape pistons
Cam: SW5
Head: 12G295 ported with 29.5 ex and 31mm inlets
Electronic ignition
Standard LCB
RC 40 exhaust
Carbs: HS2 twins on Speedwell Manifolds Needles are M

Runs very well and made 65 HP on the Dyno

[WesleyB]

mmm ok thanks for many info, I will try some needles