Triumphrat

06-20-2006, 11:45 PM

Hi, I'm new to this site and like what I've been reading...
I have a '77 Bonneville T140 and was wondering if i could change the boxy air filter set up on this bike,Maybe small cone type or round air filters... any ideas thanks :???:

TRI-AL · 06-21-2006, 05:18 AM

I'm sure you can. Contact a "parts Supplier". Many recommended on this site, but NOT the one in Chicago!

okiecityflash · 06-21-2006, 08:20 AM

I haven't found a way yet without removing the aluminum housing and side covers and relocating the zenor diode. Then you have to fashion side plates to cover the battery, etc. What I want to accomplish is replace the leaky setup that came stock. I'd prefer a filter that would attach to the carbs and fit inside the existing boxes. Maybe someday. If you find a way let us know. I tried some 4" round foam filters, but there wasn't enough clearance between carb. and frame. Side covers wouldn't refit either. May be I'll buy a dirt bike. The filters weren't cheap. Oh well. Luck in your endeavor. :wink: PS:Born on haight street, raised in the Sunset district. Went to Poly. Something in common besides scooters .

06-21-2006, 11:33 AM

Thanks for the info, Maybe i will just get an older Triumph to tinker on, a dirt bike sounds good too... I Just moved from the sunset.

Bonnevillian · 06-21-2006, 04:36 PM

It's pretty easy really...

Just cut out the area you want it to fit in the plastic air covers. I was running mine like that and if you need a pic....

[ This message was edited by: Bonnevillian on 2006-06-21 14:45 ]

okiecityflash · 06-21-2006, 06:17 PM

Not to bad. Are those filters flat on the frame side ? Do your carbs just hang from the rubber manifolds or did you fashion a brace? I imagine you insulated the frame, so as not to have them banging. :???:

Bonnevillian · 06-21-2006, 06:29 PM

The filters are offset and do not hit anything.... I think they are the K&N offset pancake filters.

Those carbs (mikuni's) are not on the bike anymore and went back to the Amal's and will have the same type filters but for 60's models since I have the retro side covers now.

Yeah... the carbs hung there but are not as delicate as they appear... they are stout.

GrandPaulZ · 06-21-2006, 07:26 PM

Before you cut into your sidecovers, be aware that you can get any number of gauze/screen (K&N type) and/or foam type filters that will slip right in place with no mods whatsoever.

They come in every size, shape & offset to accommodate pretty much every situation.

okiecityflash · 06-25-2006, 03:32 PM

Man, if anybody finds an air filter of any kind, that will fit inside a T-140 airbox, I'll be eternally grateful. And thats a long time

Bonnevillian · 06-25-2006, 03:42 PM

Do this... Retro style airbox kit.

'spensive?... YES 'bout $150 not to mention the filters. I got a deal but you would have to go through the stress the A-holes give ya.

I am still waiting on my air filters from that Chicago outfit....

Other places sell them but are higher.....

[ This message was edited by: Bonnevillian on 2006-06-25 13:52 ]