How do i work out sizes for K&n filtters

[mk1super]

How do i work out what size of fillters i need for 40Dcoe's Got one set and when i popped em on me car ran like poo I assume this is because they were to close to Trumpets Do i need to measure said Trumpets then get fillters to fit that size as i just thought the fillters were uneversal and if it said it would fit it should. Iam a car moron so please humour me

[rs new boy]

if space isnt a issue get big uns

[mk1super]

Space is an issue im afraid

 

 

any one guestimate what would fit before i suck a stone in?

 

 

 

I so need to tidy that engine bay up

[Toby]

Looks sweet mate, but have to agree there's not loads of room there. You could probably get away with nothing on them (not ideal) but with the lack of space you will notice any filters I recon - Ideally you'll need it set up again.

[MK2Ed]

Canm you get a shorter manifold.....

[glenbo]

TRY FITTING MESH ACROSS THE TRUMPETS,WILL STOP STONES GETTING IN

[Toby]

Canm you get a shorter manifold.....

 

I am sure shorter ones are available but I liked the nice straight run on the fitted one, the shorter ones I've seen seem to be a bit more "swan neck"

 

2hp or a stone in your engine - your choice

 

(I'd go for the 2 hp )

[mk1super]

would universal sock type fillters be any use? I even had a go at using some left over bike filters i had but they didnt fit

[Vista]

Canm you get a shorter manifold.....

 

I am sure shorter ones are available but I liked the nice straight run on the fitted one, the shorter ones I've seen seem to be a bit more "swan neck"

 

2hp or a stone in your engine - your choice

 

(I'd go for the 2 hp )

 

Shorter ones are available but do sap power. I went through all of this a few years ago as I have the same space issues with mine, I tried socks but was never keen on them and they do absorb any petrol spits making them a fire risk.

 

In the end and after discussing it with my engine builder I opted to run without. If you're only using it on the road i.e. not going rallying with it then the chances of ingesting a stone are next to nothing

[escort new boy]

you can but meshed filter covers that fit straight on

[Toby]

you can but meshed filter covers that fit straight on

 

Vizard seems to slate all close fitting filters. Especially the "stretched tights" option.

[mk1super]

Any site i can visit? Harking back to what vista said i do use alot of farm tracks to get to and from the roads as im up in the sticks So i figure i need filters

[X-pack-Glyn]

you can but meshed filter covers that fit straight on

 

Vizard seems to slate all close fitting filters. Especially the "stretched tights" option.

 

You know that mate, mesh doesnt flow and will rob power, it will also run rich.

[mk1super]

see i tried these slim line fillters and they made the car iddle rough as a dog then when driving it seemed to hesitate when you wellyed it

[X-pack-Glyn]

Yep, they would have restricted airflow so much that what a carb cant suck in air it sucks in as fuel instead.

[mk1super]

Yep, they would have restricted airflow so much that what a carb cant suck in air it sucks in as fuel instead.

 

 

Could i not just use tea strainers

[Vista]

Any site i can visit? Harking back to what vista said i do use alot of farm tracks to get to and from the roads as im up in the sticks So i figure i need filters

 

Ok, so you're using farm tracks, but are you heading down them broadside with your engine screaming or are you driving carefully avoiding the potholes and mud till you get on to the black stuff? If the latter then I still wouldn't worry about it.

[mk1super]

Any site i can visit? Harking back to what vista said i do use alot of farm tracks to get to and from the roads as im up in the sticks So i figure i need filters

 

Ok, so you're using farm tracks, but are you heading down them broadside with your engine screaming or are you driving carefully avoiding the potholes and mud till you get on to the black stuff? If the latter then I still wouldn't worry about it.

 

Thanks vista