Intake Plenum

Intake Plenum / Exaust

INTAKE
I have looked at all the different intake configurations on this site and thought I was ready to order the triples when I read a thread that it is actually more restrictive than stock. The idea being discussed was the stock air filter only needs to supply air to 1 cylinder at a time on it's intake stroke, essentially giving each cylender the whole surface area of the filter rather than the smaller filter on top of each throttle body. A simple solution seems to just take some round aluminum stock, around 3" diameter to mount on the throttle bodies and then mount the air filters on the makeshift plenum. Now each cylender would pull through all 3 filters and still have that cool exposed K&N look.

EXHAUST
I'm sure I'll catch some **** for this but here it goes. I have always loved the sound of glass packs. Maybe because they were all I could afford for my old trucks growing up but they make my favorite note. I just like the deep throaty sound without the metallic echo that most modern performance systems seem to have. What I dont want is my neibors calling the police when I leave for work at 5 in the morning. I am considering ordering a
stainless steel glasspack and just attaching to factory exhaust manifold.

Am I about to ruin my bike by thinking outside the norm? What's your thoughts?

Well Mark as for your filter question I would firstt point out that you see much more HP and torque gains with the triple filer then the OEM even if you stay with TORS Which if you have a older Rocket might just have the throaty growl your after without upsetting the neighbors so early in the morning/ I believe you will be better off. And if you have some money then I would recommend the Jardine pipes great sound good power and you just have to keep your wrist out of it until your away from your neighbors. If they can put up with Harleys then you will have no problem.

I've never had my bike on a dyno so I don't have any numbers to back up my belief that it runs better with triples. But it does. Triples have other advantages too, which to my mind justify their installation on their own. By far the best non-performance reason for fitting them is that you get rid of all that plumbing sitting on top of the engine. I can lift the tank and see all, without needing to remove the bear claw. Changing spark plugs is easier and I recently changed the rocker cover gasket (thanks again Hanso) with a lot less fuss than it would have been with all that hamster run in place. Then there's a storage under the seat you now have. My overflow bottle sits in there along with a puncture repair kit, couple of tools, a rag or too, my driving light relay and Dobeck TFI.

Some people don't like the noise but I quite like to hear a sucking sound between my legs.

I have TORs and like the performance from them but wouldn't say they rumble. They're not too loud though, if you're light on the throttle where you need to be. Jardines are quite a bit louder but with right tune can apparently give you more power.

I just noticed you have a 2011 Roadster so I cannot talk Much about the TORS not sure if the rumble and power improvement is the same as us guys with the older Rockets. I can tell you I have seen the roadster with the Jardines on it and it looks quite nice. I still believe with the right throttle control around th enieborhood you will not get any complaints and along with the triple filters as recommend by above you will get about 155 hp at the rear wheel much more respectable then what you have now. In fact the numbers that Triumph give you are either at the crank shaft or a out right fabrication. But with the right pipes, filters and tune You will be right up there and won't believe the difference. The smaller RU2780 filters do fit under the claw with no cutting if that is your concern and make it also much easier to balance the throttle bodies besides getting rid of the crap under the tank. I have been working on a couple other things that in the end might interest you. One will take bear claw cutting but another will not and will also retain the OEM velocity stacks wich help give consistant air flow into the throttle bodies. Chris aka Barbagris has also pointed me to some foam filters that will fit over them which might make even a little more power or at least will not rob any off the other tripl filter set up.
Just some things to think about. As the real power robber is the header on the bike no matter what year or model you have it is just to small and restricting not to mention slowing down the exhaust gas flow which is a real power robber.

Canberra: That is a funny analogy. I'm with you and don't think the noise from the engine will bother me. I don't mind to hear, see, or feel things going on with the bike. That is all part of the ride for me. If I wanted to ride in a a protected bubble I would have a have a goldwing. Thanks for the input.

Warp: I will be cutting the bear claw. I love the looks of the exposed filters, as well as getting that plumbing out of the way.

If I had the funds, I would go with the C.R. brute's with baffles but I've had the bike for two years now and I'm tired of waiting. Another thing I like about the glasspack idea other than price is it kind of looks like the traditional British pea shooter exhaust, except scaled up to rocket size. Glasspacks are cheap enough that if it doesn't sound good or if it looks goofy I can just take it off. I just want to make sure I dont damage anything. If the plenum is a waste of time I'll skip it.

Just make sure you get her on a dyno as you will be changing the A/F with more open exhaust. I to love the Carpenter megaphone with the Baffle and am trying to scrap the cash together for another one for my other Rocket. SHe is under going a make over. In fact I was amazed to see when I took the front wheel off to add the new fender that some bugger left out the left dies wheel spacer. I think the only reason she did not waller about was the brake rotor can caliper held her on center. I am sure glad I did not push her hard yet. I feel bad enough that I did not notice it when I got it. I have put a little over 1000 miles on her since I recieved her as a gift. It came with new rubber so I suspect this was a case of another Triumph technition who drank to much beer during lunch Or only had the same amount of brain cells God gave a rubber Frog.

I know it was not the owner as his health was so bad all he got to do was have the tires mounted and took her for his last short ride. So short it di not even wear the tire sticker glue off the tires. I still cannot complain as it is the best gift I have ever been given. I still wish I did not have her and the owner was still here to ride with us. I miss G-Man something fierce!!!!!

CanberraR3 said:

I've never had my bike on a dyno so I don't have any numbers to back up my belief that it runs better with triples. But it does. Triples have other advantages too, which to my mind justify their installation on their own. By far the best non-performance reason for fitting them is that you get rid of all that plumbing sitting on top of the engine. I can lift the tank and see all, without needing to remove the bear claw. Changing spark plugs is easier and I recently changed the rocker cover gasket (thanks again Hanso) with a lot less fuss than it would have been with all that hamster run in place. Then there's a storage under the seat you now have. My overflow bottle sits in there along with a puncture repair kit, couple of tools, a rag or too, my driving light relay and Dobeck TFI.

Some people don't like the noise but I quite like to hear a sucking sound between my legs.

I have TORs and like the performance from them but wouldn't say they rumble. They're not too loud though, if you're light on the throttle where you need to be. Jardines are quite a bit louder but with right tune can apparently give you more power.

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. . . and may the gods be blessed for that "sucking sound" !!! :bch:

Whomever did that piece regarding the stock air being better than trips is misinformed or perhaps just plain WHACKO. I did the trips, TORs, PCV+AT and HansO tune. The difference in performance was very impressive throughout the power band. I also believe each filter exceeds the needed CFM of air needed for each cylinder of our engine. At least perhaps unless one goes to 240 ponies.
1olbull

Sorry to hear you lost a friend warp. I have lost several brother in arms over the last year and know it ain't easy.
Thanks for your replies to my question. I have been a stalker on here for the most part over the last two years and tried to absorb as much knowledge as possible. Your megaphone with endcap is the cats meow. Once there is a restriction from a baffle does the free flowing header still make a difference ?

CanberraR3 said:

I've never had my bike on a dyno so I don't have any numbers to back up my belief that it runs better with triples. But it does. Triples have other advantages too, which to my mind justify their installation on their own. By far the best non-performance reason for fitting them is that you get rid of all that plumbing sitting on top of the engine. I can lift the tank and see all, without needing to remove the bear claw. Changing spark plugs is easier and I recently changed the rocker cover gasket (thanks again Hanso) with a lot less fuss than it would have been with all that hamster run in place. Then there's a storage under the seat you now have. My overflow bottle sits in there along with a puncture repair kit, couple of tools, a rag or too, my driving light relay and Dobeck TFI.

Some people don't like the noise but I quite like to hear a sucking sound between my legs.

I have TORs and like the performance from them but wouldn't say they rumble. They're not too loud though, if you're light on the throttle where you need to be. Jardines are quite a bit louder but with right tune can apparently give you more power.

Click to expand...

you knew somebody would answer that

Some people don't like the noise but I quite like to hear a sucking sound between my legs. I'll bet all the men on this forum enjoy sucking sounds between their legs as well. whether riding or not

RiggerMark said:

Sorry to hear you lost a friend warp. I have lost several brother in arms over the last year and know it ain't easy.
Thanks for your replies to my question. I have been a stalker on here for the most part over the last two years and tried to absorb as much knowledge as possible. Your megaphone with endcap is the cats meow. Once there is a restriction from a baffle does the free flowing header still make a difference ?

Click to expand...

I suspect there is not much restriction on the baffle once you twist your wrist. when I originally found this baffle and end cap it came woth atwo step baffle



I talked to the manufacture and explained I was only looking for a little noise restraint when going by cops in town or on the highway where I would ease off the throttle so I have the 3.0 inch secton of the baffel with no secondary back plate/reducer down to the 1.5 inch section. So basically its its a 3.00 hole straight thru with some packing around the 3 inch screen. My thought were when I hit it hard it would force straight thru the hole and not do much baffle. Kind of like only having the end cap for finish apperance. S I figure there would not be as much restriction. I think I have what I need as when I let her idle or putter thru town things are not as noisy. but when I open her up she is quite loud and boysterious. Believe me if it weren't for they way the cops are around her I would be running the open megaphone as the sound is quite awesome. But it is quite obvious that there is no sound restriction and the blower attracks attention alone. So I went this route and am quite sastified