Single K&N vs 3 K&N filters

[Bluemarlin]

I modified mine back in '07 and love it. The filters are easy to remove, clean and oil. The carbon fiber skinny bearclaw looks way better than the chrome one. The secondaries are opened by a TB tune and the exhaust is Pred. I also picked up some nice street cams from Nev as well as a lock up clutch. Riding my Rocket is like the old muscle cars from the '60's, I had to add a PCIII so a local guy could dyno it, but the TB allowed me to reset the secondaries to open when shifted into gear and raise the rpm limit. Oh Yeah! Les hooked me up with some sweet triple piston calipers front and back so I can stop the monster. The only thing I have ever had to do since, is change the oil and put new tires on. As far as intake noise... I would rather listen to that, than engine noise.
Oh and Black is definitely faster!!!!

 

[cardinal93]

Looks like others have, but didn't dyno before or after (maybe when I get back to Mississippi and Alabama's only a short ride away)
That said, I put on the 1770s, cut the claw. Love the look, realllly Love the sound. To each their own. Would not go back to underseat.

 

[speedfrk]

Hey ozrider and Battersea what is the pt# of the K&N panel filter you guys are using? What holds the filter down in place? I'm thinking this might be the overall ticket to add more airflow without making a ton of changes to the stock setup. I take it you set the panel filter down on top of the plunum, using the bottom where it fits in a hole marked the top of the plunum, and then cut the top of the plunum to fit?

 

[Power-Tripp]

How much flow you need is based on two things:
1.) Power developed.
2.) How often cleaning will be required.

Until you have an aftermarket full exhaust system (including a well designed header), you simply do not need a lot of intake filter area. K&N RU-2780 filters (three) are not particularly high flowing, and the intake length is shorter than the stock plenum runners. This means that the stock plenum tends to make better torque at low rpm (under 4000 rpm).

Once you eliminate the exhaust header as the restriction, then you need a good bit more intake flow (and length ).
With the R3 engine specs, the top of the stock rubber velocity stacks in the stock plenum give an intake length (not including intake port) of 6.5 inches. Revving to 6000-6500 rpm, the engine really wants an intake length that is a good bit longer. Anything less will reduce torque output under peak torque rpm.

When combined with a well designed exhaust system, a well-matched intake system can deliver output (HP and TQ) gains that are truly impressive compared to stock.

Below are a couple of photos from some early development. The first uses the stock velocity stacks and a large filter. The second is for the same filter, but better shaped and longer velocity stacks. The latest generation is even more impressive, but requires a custom replacement for the Bearclaw that includes a scoop.

 

[ozrider]

Hey ozrider and Battersea what is the pt# of the K&N panel filter you guys are using? What holds the filter down in place? I'm thinking this might be the overall ticket to add more airflow without making a ton of changes to the stock setup. I take it you set the panel filter down on top of the plunum, using the bottom where it fits in a hole marked the top of the plunum, and then cut the top of the plunum to fit?

There wont be a standard filter that shape............ I used a panel filter that we use on a race car & trimmed it to suit the opening that was cut off the top of the standard plenum and attached it with Sikaflex.

 

[Battersea]

Hey ozrider and Battersea what is the pt# of the K&N panel filter you guys are using? What holds the filter down in place? I'm thinking this might be the overall ticket to add more airflow without making a ton of changes to the stock setup. I take it you set the panel filter down on top of the plunum, using the bottom where it fits in a hole marked the top of the plunum, and then cut the top of the plunum to fit?

I didn't use any filter you can buy, I built mine with wire mesh and foam bought from Ramair in England.







Showing blanked inlets with IAT inserted.


Since then Ramair has been working with me on a complete replacement filter to bolt straight to the throttle bodies. Should be available soon - see post below:

There was a few posts on the Rocket 3 Touring section about filters which I replied to. I have copied one of them over as it was here that the thread was started. Hope that will be OK.



I did indeed visit Ramair on Monday and work on the one piece filter is progressing although running a bit late. I was shown the computer model and they have followed the basic shape I gave them. Latest is that the tooling will be ready early next week and hopefully a prototype will follow a few days after.

Just to make it clear this initial project is to make an alternative to the triple K&N's/UniFilters, it will fit under an unmodified bear-claw and will have a base-plate with integral radius topped bell-mouths and spigots that clamp straight to the throttle bodies. The AIT sensor also has a integral mounting thus placing it where it should be - in the intake air stream. The filter foam is bonded to the base-plate making a one piece assembly that is easy to service.

This filter isn't intended to be a maximum hp producer, but none the less will flow much better than the triple filters. The idea is to supply a complete kit making it a simple 'plug and play' conversion. It will include an easy to install crankcase breather filter, an IAT sensor extension lead, a clip to fix the MAP sensor, instructions, plus nuts and washers to complete the instal. Pricing should also be competitive.

The replacement bear-claw mentioned is also not intended to be a power producer. The idea was not to act as an air ram but just allow cooler air to the filter, and look good of course.

Edit:

I should have added that when ready, this filter will be available from Ramair direct - not from me. I am not receiving any remuneration other than the free prototype that I will be testing.

Availability shouldn't be a problem as Ramair already distribute their products worldwide.

 

[speedfrk]

Based on the results obtained from someone I know who has an 06 standard I'm going with three RX4040-1 filters. He has a stock header pipe with Maddog slip-ons(which means CAT deleted), three RX4040's, and a PCIII(which I'm stuck with) acheived 146HP(not sure about torque) with a custom dyno map. That should be close to what I'll get with the only difference is I have TORS vice Maddog's. Any where close to that will be more than enough for me. NO MORE TWEEKING AFTER THIS(yea, right).

 

[dobro]

How much flow you need is based on two things:
1.) Power developed.
2.) How often cleaning will be required.

Until you have an aftermarket full exhaust system (including a well designed header), you simply do not need a lot of intake filter area. K&N RU-2780 filters (three) are not particularly high flowing, and the intake length is shorter than the stock plenum runners. This means that the stock plenum tends to make better torque at low rpm (under 4000 rpm).

Once you eliminate the exhaust header as the restriction, then you need a good bit more intake flow (and length ).
With the R3 engine specs, the top of the stock rubber velocity stacks in the stock plenum give an intake length (not including intake port) of 6.5 inches. Revving to 6000-6500 rpm, the engine really wants an intake length that is a good bit longer. Anything less will reduce torque output under peak torque rpm.

When combined with a well designed exhaust system, a well-matched intake system can deliver output (HP and TQ) gains that are truly impressive compared to stock.

Below are a couple of photos from some early development. The first uses the stock velocity stacks and a large filter. The second is for the same filter, but better shaped and longer velocity stacks. The latest generation is even more impressive, but requires a custom replacement for the Bearclaw that includes a scoop.

Wayne, does the Ramair filter qualify as a "well-matched intake system" for Jardines?

 

[albertaduke]

Wayne, does the Ramair filter qualify as a "well-matched intake system" for Jardines?

yes I would like to know the answer as well

 

[barbagris]

Seems to work well with my exhaust which is a Jardine header mated to Sam's (he of Predator fame) Thugs.

Better than anything I've used so far - by this I mean smoother (pulls well from 2000rpm to well beyond sensible), quieter and (albeit subjectively - based on the kidney punch count) zippier. Some odd intake noise at about 3200rpms in 5th - I want to get some more PC5 data before doing owt though.

With luck the Aussie-Air-claw and my (under development) inner heat baffle will give it a nice healthy cool air flush as well. Every little helps.