Wilsons Sandbox

--- In DSN_klr650@yahoogroups.com, "Mike T." wrote:

> Hi. I was going over my A16 and noted the following performance

mods

> to the engine- Airbox mod ( the 'L' cutout w/o foam etal ), K and N > Filter, Dynajet kit in the carb ( what needle position as yet > unknown, nor the jet/ slide mods, if any )Big gun ceramic head pipe > and Lazer Duro Pro exhaust. When I pulled the K and N, I noticed

the

> screen mounted on the airbox was still in place. Humm... good

surface

> area, but very dense wire netting. Any perforamnce there ( in > removing it) or is the safegaurd against foreign material getting

to

> the carb worth it's retension, OR? I searched the archives, not

much

> came up. > > Thoughts. > > Thanks guys > > Mike T > A16 > Las Vegas

Get rid of it. It's referred to as a backfire screen. The KLR design, what with its cam and ignition timing, is not prone to backfiring. I even had XRs in the past with cams and other hot rod mods to them and never had any fire hazard issues without this screeen. In fact the only one I have heard about having such an issue is one or two of the new Yamaha 4-stroke models. It may have even been a retrofit. A KLR, however, does not need one. This screen is a substantial restriction and further improves performance when removed. This air intake and screen mod is the only way to get full potential power out of this engine. If you don't get the maximum amount of air into the engine, neither pipes, air filters, nor voodoo will get much of a power increase. Even with the airbox mods, the KLR will not be a rocket sled, but it will be much improved. It's a little work getting the airbox out of the frame, bbut definitely worth it. This will all make jetting the carb a lot eeasier too. I ended up with a 158 main jet which sounds huge, but with the proper amount of air, my mileage has not changed--at least when I refrain from quick 100 mph runs. People have different perspectives about performance mods to this bike, but I have always wanted my bikes to have some snap in the performance department. A decent pipe, K&N air filter, full airbox mod, and proper jetting makes the KLR a little more interesting. Thad Carey A15 (but Barbie in drag)

t> perspectives about performance mods to this bike, but I have always t> wanted my bikes to have some snap in the performance department. A t> decent pipe, K&N air filter, full airbox mod, and proper jetting Has anyone dyno'd the KLR before and after all these performance changes? My old KLR had a Supertrapp and frankly all it did was encourage my tinnitus. My latest one is bone stock and I'm happy with it that way. jim

On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote:

> > Get rid of it. It's referred to as a backfire screen. The KLR > design, what with its cam and ignition timing, is not prone to > backfiring. I even had XRs in the past with cams and other hot rod

With the stock pilot screw setting, my KLR did very very occasionally shudder and fart in a way I would have thought was a small backfire. There's a machine shop that advertises in DSN whose main off-the-shelf product is free-flow airboxes for various enduro bikes. These use big cylindrical filters that seem much better suited to a high-flow design than the filter style used in the KLR airbox (having much experience with K&N filters in automotive applications, all I can really say is that they're great for getting dust in your engine, and _may_ have slight airflow benefits). I don't really love the idea of chopping up my KLR's airbox as others have done and was contemplating picking up the phone and seeing if the aforementioned shop would be interested in making a KLR version of their airbox -- would anyone else be interested in this? Thor

Gotta be REAL careful with this. In Oregon the Oregon Department of Forestry officials will stick a tool in the back of your exhaust and if you don't have that screen you WILL get a ticket or your bike impounded... -Scott

On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote: > > Get rid of it. It's referred to as a backfire screen. The KLR > design, what with its cam and ignition timing, is not prone to > backfiring. I even had XRs in the past with cams and other hot rod

Oops - misread the title - thought we were talking about true spark arrestor screens in the exhaust - mea culpa. -Scott

----- Original Message ----- From: KLR Rider - Scott Adams To: KLR Mailing List Sent: Tuesday, November 18, 2003 11:01 PM Subject: Re: [DSN_klr650] Re: Airbox screen - pros and cons Gotta be REAL careful with this. In Oregon the Oregon Department of Forestry officials will stick a tool in the back of your exhaust and if you don't have that screen you WILL get a ticket or your bike impounded... -Scott On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote: > > Get rid of it. It's referred to as a backfire screen. The KLR > design, what with its cam and ignition timing, is not prone to > backfiring. I even had XRs in the past with cams and other hot rod List sponsored by Dual Sport News at www.dualsportnews.com. List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Unsubscribe by sending a blank message to: DSN_klr650-unsubscribe@yahoogroups.com . Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

You read the post to fast. It was related to the AIRBOX... NOT EXHAUST related!!! Mike T. A16 Las Vegas --- In DSN_klr650@yahoogroups.com, "KLR Rider - Scott Adams" wrote:

> Gotta be REAL careful with this. In Oregon the Oregon Department of > Forestry officials will stick a tool in the back of your exhaust

and if you

> don't have that screen you WILL get a ticket or your bike

impounded...

> > -Scott > > > > On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote: > > > > Get rid of it. It's referred to as a backfire screen. The

KLR

> > design, what with its cam and ignition timing, is not prone to > > backfiring. I even had XRs in the past with cams and other hot

rod

Oops - I just replyed to you first oops. Airbox thread back in action - I love the forest (and, in my case, the tinder dry desert/ brush: spark arrestor is not on the block - Period). Mike T A16 Las Vegas --- In DSN_klr650@yahoogroups.com, "KLR Rider - Scott Adams" wrote:

> Oops - misread the title - thought we were talking about true spark

arrestor

> screens in the exhaust - mea culpa. > > -Scott > ----- Original Message ----- > From: KLR Rider - Scott Adams > To: KLR Mailing List > Sent: Tuesday, November 18, 2003 11:01 PM > Subject: Re: [DSN_klr650] Re: Airbox screen - pros and cons > > > Gotta be REAL careful with this. In Oregon the Oregon Department

of

> Forestry officials will stick a tool in the back of your exhaust

and if

> you > don't have that screen you WILL get a ticket or your bike

impounded...

> > -Scott > > > > On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote: > > > > Get rid of it. It's referred to as a backfire screen.

The KLR

> > design, what with its cam and ignition timing, is not prone to > > backfiring. I even had XRs in the past with cams and other hot

rod

> > > > List sponsored by Dual Sport News at www.dualsportnews.com. List

FAQ

> courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Unsubscribe by sending a blank message to: > DSN_klr650-unsubscribe@yahoogroups.com . > > > > Your use of Yahoo! Groups is subject to

http://docs.yahoo.com/info/terms/

--- In DSN_klr650@yahoogroups.com, "KLR Rider - Scott Adams" wrote:

> Gotta be REAL careful with this. In Oregon the Oregon Department of > Forestry officials will stick a tool in the back of your exhaust ..

Damn, the bastard carry a special tool for this? Does it hurt bad? I would have expected it in prison, but not Oregon. Guess I could have the wife check to see if there's a screen in mine. They'll be impounding my bike before checking this exhaust. MarkB

If that tool reaches the air box, I gotta see it and get a photo of it. This screen is before the carb in the air box under the seat. The screen in your exhaust is to retain the fiberglass in the end of the pipe, however the spark arrester in the KLR pipe is deeper than that, so the pencil in the pipe trick is just silly on a KLR. I have been looking for something I can use as a downspout, and I will just weld it on the end of the can, basically so rain water cannot enter the pipe if parked in the heavy rain, this will make is so Mr. DNR will have to break his pencil to get it in there, and that should serve him right trying to stick his tool in somebody back exit. Dooden A15 Green Ape --- In DSN_klr650@yahoogroups.com, "KLR Rider - Scott Adams" wrote:

> Gotta be REAL careful with this. In Oregon the Oregon Department of > Forestry officials will stick a tool in the back of your exhaust and

if you

> don't have that screen you WILL get a ticket or your bike impounded... > > -Scott > > > > On Wed, Nov 19, 2003 at 04:07:48AM -0000, thad_carey wrote: > > > > Get rid of it. It's referred to as a backfire screen. The KLR > > design, what with its cam and ignition timing, is not prone to > > backfiring. I even had XRs in the past with cams and other hot rod