All this may be true, but when I switched to K&Ns in a different holder, and
used modest ram pipes underneath, I got nothing but a pleasant result. Faster
revving, more power at lower RPMs. I never touched the mixture or jets.
Jay Donoghue
72 B-GT
66 Mustang
-----Original Message-----
From: Paul Hunt <paul.hunt1@blueyonder.co.uk>
To: MG List <mgs@autox.team.net>
Sent: Tue, May 25, 2010 3:57 am
Subject: Re: [Mgs] Got Jets
All air cleaners restrict, and some restrict more than others. K&Ns *do*
restrict less than the standard filters, and the needles were originally
chosen to balance the level of restriction of the original filters through the
throttle range. Do anything to improve the breathing, and filter type is just
one of those, and you may well have to change the needle profile to restore
the balance. Ironically ram-pipes may make things *worse* by smoothing the
air-flow, other engines have design features to *cause* turbulence to ensure
proper mixing and distribution through the cylinder. If you have to change the
filters, then try a richer needle, there are lots to choose from and various
programs that compare them graphically. But like many so-called improvements
to the MGB any change is only likely to be detectable at the limit.
PaulH.
----- Original Message ----- > I'msorry, but this statement just doesn't make
sense. If the stock air
> cleaners are "restricting" the air flow at idle, why aren't they choking >
it
> off completely at open throttle?
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