K&N Air Filter

Post by **TJB** » Sun May 06, 2007 3:23 pm

I was looking on the K&N website for an air filter to fit my 1955 Morris Minor but no results came up in the product search. However I have since seen several referencs to Morris's with K&N filters on them.

Does anyone know the product code or the size which refers to the filter suitable for the above Morris?

Many Thanks,

Tom

Post by **picky** » Sun May 06, 2007 3:48 pm

check out www.minispares.com I am sure they will have one that suits your carburetor. but to be honest you need a bigger carburetor if you want more power, just fitting the better filter to the otherwise normal engine will just make more noise and only slightly more power.

the one in my display pic is from www.aptfast.com

Post by **GAS** » Sun May 06, 2007 6:21 pm

You might have to re jet the carb,as the K&N lets more air in an weakens the mixture.......

Post by **picky** » Sun May 06, 2007 6:49 pm

I should add - you cant beat buying the book "tuning the A series engine" its by david vizard, available on amazon. tells you everything you would want to know about tuning the A series engine... does what it says on the tin!!

Post by **Innovator** » Sun May 06, 2007 7:27 pm

You need to fit one that is listed for a Mini.

As the K&N will flow more air it will weaken the mixture. You really need a rolling road tune up to maximise the benefits of the increased airflow.

Post by **steve4063** » Sun May 06, 2007 9:41 pm

picky wrote:I should add - you cant beat buying the book "tuning the A series engine" its by david vizard, available on amazon. tells you everything you would want to know about tuning the A series engine... does what it says on the tin!!

any ideas where to get one then?????????

Post by **Welung666** » Sun May 06, 2007 9:49 pm

Choose from one of these 5 although the yellow one is more suited ;)

Post by **steve4063** » Sun May 06, 2007 9:51 pm

lot of money tho hey!!!!!!!!!!!

Post by **bigginger** » Sun May 06, 2007 9:53 pm

...but very well worth it. More than you'll ever need or want to know

Post by **alex_holden** » Sun May 06, 2007 11:17 pm

That's good value considering the cost of printing such a large book. It's roughly A4 size, 500 pages, hardback.

Post by **Innovator** » Wed May 09, 2007 6:34 pm

That book is the best value book you will ever buy. It contains so much info.

I say (and always do) that if you are considering doing any tuning on the A Series you should buy Vizards book, read it and do as he says.

I also say (everytime) that any tuning should be followed by a rolling road tune up.

Post by **JimK** » Thu May 10, 2007 1:48 pm

It's on Amazon, priced £13.19
Linky

Post by **Rob_Jennings** » Thu May 10, 2007 3:36 pm

The mini crowd tell me that a best compromise for air filters is something like the round mini air box for a 1.5 carb with a K&N element in it. This provides flow without too much noise.

I'm currently deafened by the mini which has just a K&N filter, so will be replacing that for a box + element soon, porbably will do the same on the minor which already has a mini air box on a 1.5 carb but a paper element at present.

Post by **dunketh** » Thu May 10, 2007 3:39 pm

I'm after a straight pancake/K&N job for mine but keep being outbid. Perhaps my problem is I only really want to pay a fiver for one.
As for noise? I dont notice it at all, but then once you've got the revs up you cant hear anything (radio, wife, other traffic...)!

Post by **Rob_Jennings** » Thu May 10, 2007 3:55 pm

KN filters are about 20-30 quid new (simple no chrome ones), given they last for ever thats not expensive, about the price of 4-5 paper elements.

Post by **dunketh** » Thu May 10, 2007 4:57 pm

Id need the crhome type as I dont have an air filter housing. When I upgraded to a HS4 I never had an airfilter to fit it.
I'm thinking of modifying my HS2 pancake filter with a hacksaw - make the inlet whole bigger and zip tie the bugger on.

Post by **Packedup** » Thu May 10, 2007 5:06 pm

Here's a random thought for the housingless - The air filter element from a Spit/ Dolomite/ Midget 1500 for the HS4. They have metal plates both sides of the paper element, so can be bolted straight on by the looks of things. No housing means more noise (and I suppose more risk of fire if the carb spits back!), but also more flow (ran my 2000 with just filters whilst trying to get a housing, and had to blank them with gaffer tape to keep the flow within spec of the needles!).

Last one I got was something like 3 quid inc p&p off the bay.

Post by **picky** » Thu May 10, 2007 5:29 pm

having the filter just sandwiched between two plates will give good flow but will also allow the engine to breath in hot air(which is less dense) under the engine bay (from engine and exhaust heat). Ideally the filter would be enclosed and have a pipe leading from the radiator grille to the filter to supply cool air (denser - more oxygen) from the front of the car. I am sure that the metro setup is like this I am suprised someone siad that it fouls the bonnet. Anyone running an mg metro air filter assembly??

Post by **Peetee** » Thu May 10, 2007 7:35 pm

I cut down a piece of UVPC fascia panel to create a sandwich plate that bolts to the carb using the existing holes and recessed allen bolts. each side of the plastic has self adhesive felt to act as a gasket. The 1098 Minor air filter can is bolted to this. The inlet tube has been removed by cutting a larger hole around it and a Midget rubber inlet elbow fitted in. The result has no inlet noise, the performance is down a little but that is to be expected as the mixture would have changed and the engine has never been on a rolling road anyway.
That sounds like a bodge but the plastic adapter is barely visible and completely secure.

Post by **Packedup** » Thu May 10, 2007 8:16 pm

picky wrote:having the filter just sandwiched between two plates will give good flow but will also allow the engine to breath in hot air(which is less dense) under the engine bay (from engine and exhaust heat). Ideally the filter would be enclosed and have a pipe leading from the radiator grille to the filter to supply cool air (denser - more oxygen) from the front of the car. I am sure that the metro setup is like this I am suprised someone siad that it fouls the bonnet. Anyone running an mg metro air filter assembly??

Totally agree with you about the hot air - But there's not much inlet temp difference between pancake (or cone) filters, bare elements and no filters is there!? ;)