RAMAIR Filters bespoke Rocket-3 underclaw filter.

From the release, it looks like the crankcase breather filter is included

The crank case breather is included.

It is a great looking package and the value also good but a couple of Questions, is there a fire retardant mesh inside (a few years ago a Rocket caught alight after backfiring thru the throttle bodies the foam filters caught alight) and how will they cope with a modded motor, eg a 240hp like Neville Lush or Carpenters modified are they going to flow enough air or is there going to be a larger airflow version coming, I know there was some talk of it, just how much actually can this version move

BCRedHaze said:

From the release, it looks like the crankcase breather filter is included

Click to expand...

bruce aussie said:

The crank case breather is included.

Click to expand...

Oops, missed that. Even better then!

Actually, I tell a lie. I did see it but as per your own advice Bruce, I only believed half of what I read.....

CanberraR3 said:

Actually, I tell a lie. I did see it but as per your own advice Bruce, I only believed half of what I read.....

Click to expand...

That's the trick you obviously haven't worked out witch half to believe.

hanso said:

It is a great looking package and the value also good but a couple of Questions, is there a fire retardant mesh inside (a few years ago a Rocket caught alight after backfiring thru the throttle bodies the foam filters caught alight) and how will they cope with a modded motor, eg a 240hp like Neville Lush or Carpenters modified are they going to flow enough air or is there going to be a larger airflow version coming, I know there was some talk of it, just how much actually can this version move

Click to expand...

I'm hoping Lushy's dyno can answer the flow volume question. I read in an earlier post a mention about fire retardant mesh I'll see if I can find it.

It says it comes with a crankcase breather filter.

To answer some questions posed.
The filter is pre-oiled for initial fitting, obviously will need cleaning and re-oiling in service.
It is a 'lifetime' filter unless you damage it.
It does not have flame-trap gauze. In Ramair's considered opinion it is not necessary with the particular type of foam they use.

The filter wasn't conceived to make very large hp but it could very well do so - only dyno testing will tell. The whole point was to be a viable alternative to the triple RU2780's - that would flow better - that would easily fit under a standard bearclaw - that would retain the standard coolant expansion tank and have a properly located IAT sensor.

According to Ramair this filter will certainly flow more air than the RU-2780's, whether they will be sufficient for 240+ hp is not known as yet.

What filters do the high hp engines use at present? I think the Carpenter 240+ is without any filtration at all, isn't it?

Bloody hell. OK here's what I can answer - anything else I suggest you mail RAMAIR.

RAMAIR TELL US THEY KNOW FROM EXPERIENCE THIS WILL FLOW MORE AIR THAN THE K&N's.
I'm inclined to thank that if Aston Martin and Brabus go to them for equipment - they have some idea about what they say.
BUT Until Wayne/Nev test - that's all we know.

RAMAIR have two types of foam. One is untreated but they also pre treat this foam with their own gooey stuff. SPECIFICALLY in origin for the Aussie market. But all R3 filters are pretreated.

And believe me it's as sticky as hell at first. I didn't know it came pretreated and had some gooey stuff and treated it again.
They do "clean and retreat" kits - if it were me I buy one for the future just in case if you're outside the UK. I understand this goo is fire retardant. But there is a wire cage inside.
I am told (various sources) that foam can take far more dirt load before it's flow is affected than oiled cotton.
I cant answer with any technical data - all I know is that AGES ago I tried both UNI and K&N on a Laverda Montjuic (basically a Formula 500 track bike that Richard Slater managed to get homologated in the UK) - and the UNI's did a better job.

The inlets are radiused (curved) to the throttle body - as opposed to a 90º edge on K&N's - If you like it's sort of a mini bellmouth - and have a lip so air is directed to the I/D of the throttle not the O/D as per K&N
There are university papers out there that suggest this CAN add as much as 16% to air flow.

It's shape, design by Battersea, is such that it fits under a stock bearclaw. He also did most of the work of fitting instructions.

Unlike the K&N solution the IAT sensor is slotted into a hole in the filter base so that it's measuring the actual intake air temperature - not a temperature under the tank somewhere in a closed air pocket surrounded by wire mesh (K&N filter). Comes with wiring extension to fit. How much difference does this make? - I have no idea. But general consensus is that this is a GOOD THING.

I do know they are also CONSIDERING long term a MUCH MORE RADICAL OPTION. Maybe with an air-scoop for monster engines. I guess to some extent it depends on Dyno results. If this flows enough - why make a bigger one.

CHIRPING : They don't CHIRP or SLAP like K&N's but they do whistle - notable at low throttle - Low Load and just opening the throttle marginally. This runs from about 1800rpm to just over 3200.
Secondary butterfly setting has no effect. I've done 800kms testing. Mostly fast highway. The prototype is staying right where it is.

Chris