nevada dual sport route help

[Shopper]

Hi there ! Out of curiosity, just a little question regarding how valves work on the KLR... What is a "tight" valve ? Is it, contrarily to what "tight" means, a valve that tends to remain open (and thus more likely to burn) or a valve that closes "too much", whatever that means ? I read that it is worse to have the clearances on the bottom end of the spec than the top end because too little clearance means the valve remain partially open, hence loss of power and risk of burning. Is that right ? If it is, then how come we have to use *thinner* shims to make the valve's opening *wider* ? It seems to me that when the cam presses on the shim, the thinner the shim, the less the valve opens. Am I missing something ? Thanks ! Steph

[Gee Ja]

The problem is when the valve is trying to close, not open; if the shim is too thick, the valve can't close fully, and that's what causes the big problems. If the clearance is too wide, then the valve can't open fully, but that's less severe a condition than having it too tight, and allowing the hot exhaust gases to leak past the valves on combustion. That's why it's preferable to be towards the tappy end of the clearance spec.

On 9/7/05, Shopper wrote: > > Hi there ! > > Out of curiosity, just a little question regarding how valves work on the > KLR... > > What is a "tight" valve ? Is it, contrarily to what "tight" means, a valve > that tends to remain open (and thus more likely to burn) or a valve that > closes "too much", whatever that means ? > > I read that it is worse to have the clearances on the bottom end of the > spec > than the top end because too little clearance means the valve remain > partially open, hence loss of power and risk of burning. Is that right ? > If it is, then how come we have to use *thinner* shims to make the valve's > opening *wider* ? It seems to me that when the cam presses on the shim, > the > thinner the shim, the less the valve opens. Am I missing something ? > > Thanks ! > > Steph > > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.comhttp://www.dualsportnews.com> > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.htmlhttp://www.bigcee.com/klr650faq.html> > > > Yahoo! Groups Links > > > > > > > [Non-text portions of this message have been removed]

[clint lee jin yew]

a tappy valve is a happy valve. also i'd just like to mention here that using good engine oil ( no i'm not trying to start a whole new engine oil discussion ) or frequently changed oil can help your valve stay within spec for a much longer time. and when doing the valve clearence adjustment , do check the tensioner spring. mine was not working when i did my adjustment. now if we didn't check that, chances of the timing chain snapping is quite high and my piston would be kissing the valves. thats a bad thing clint

[Spot ON]

>I stumbled onto the old, informal >version of the Burning Man and didn't get home until >Tuesday. >Pat >G'ville, NV

Yeah Pat. Been down that rode. Burning Man '94, '95, '96, '99. Got a little too big. Can't even bring assault rifles out there any more. It upset the hippies. Erik in San Diego --- Pat Schmid wrote:

> --- In DSN_KLR650@yahoogroups.com, Spot ON > wrote: > > Jeff the Black Rock Desert is a magnificent place > to > > explore. I went to school in Reno (UNR) and we > used > > to take trips out to the Black Rock. Ask someone > in > > Gerlach to way to the hot springs, I think this is > on > > the High Rock Mountain Trail. Get out on the > playa > > and haul ass. It's really fun. In the distance > > you'll see a black mountain, that's where the > > hotsprings are. At the hot springs, there is an > old > > immigrant wagon there. It's a good place to camp > and > > jump in the hot springs. Just beyond that are two > dry > > lake beds. It's a beautiful area. If you're > going > > alone, tell a BLM guy in Gerlach and what time you > > expect to be back through there. Fill up with gas > > too. > > > Just got to be very, very careful that you found the > right hot springs > before jumping in. There are hot springs out there > that will parboil > you in seconds. A stock KLR tank will easily get you > through the High > Rock Desert Canyon and back to Gerlach to fill back > up, just you got > to get back to Gerlach before 6. In years past I've > just used this gas > station to leave word that if I'm not back to gas up > I'm more than > likely needing help. Wilderness camping in the > Canyon is possible if > the creek is still flowing, but ther is some great > camping if you > swing east to Cedarville. Also a great set of > mountains to ride in. > > The road out to the Canyon runs along the western > edge of the Black > Rock and it is an interesting place to ride across. > The first year I > had my KLR, back in '95, I took my first trip up > that way on the > Saturday of Labor Day Weekend. I stumbled onto the > old, informal > version of the Burning Man and didn't get home until > Tuesday. > > Pat > G'ville, NV > > > > > > > > > Archive Quicksearch at: >

http://www.angelfire.com/ut/moab/klr650_data_search.html

> List sponsored by Dual Sport News at: > www.dualsportnews.com > List FAQ courtesy of Chris Krok at: > www.bigcee.com/klr650faq.html > > > Yahoo! Groups Links > > > DSN_KLR650-unsubscribe@yahoogroups.com > > > > >

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[Shopper]

Ah, OK, I get it better now. Thanks for the explanation ! Steph

----- Original Message ----- From: "Gee Ja" To: "Shopper" Cc: DSN_KLR650@yahoogroups.com> Sent: Wednesday, September 07, 2005 12:12 PM Subject: Re: [DSN_KLR650] Valve mechanics > The problem is when the valve is trying to close, not open; if the shim is > too thick, the valve can't close fully, and that's what causes the big > problems. > If the clearance is too wide, then the valve can't open fully, but that's > less severe a condition than having it too tight, and allowing the hot > exhaust gases to leak past the valves on combustion. > That's why it's preferable to be towards the tappy end of the clearance > spec. > > > On 9/7/05, Shopper wrote: >> >> Hi there ! >> >> Out of curiosity, just a little question regarding how valves work on the >> KLR... >> >> What is a "tight" valve ? Is it, contrarily to what "tight" means, a >> valve >> that tends to remain open (and thus more likely to burn) or a valve that >> closes "too much", whatever that means ? >> >> I read that it is worse to have the clearances on the bottom end of the >> spec >> than the top end because too little clearance means the valve remain >> partially open, hence loss of power and risk of burning. Is that right ? >> If it is, then how come we have to use *thinner* shims to make the >> valve's >> opening *wider* ? It seems to me that when the cam presses on the shim, >> the >> thinner the shim, the less the valve opens. Am I missing something ? >> >> Thanks ! >> >> Steph >> >> >> >> >> Archive Quicksearch at: >> http://www.angelfire.com/ut/moab/klr650_data_search.html >> List sponsored by Dual Sport News at: >> www.dualsportnews.comhttp://www.dualsportnews.com> >> List FAQ courtesy of Chris Krok at: >> www.bigcee.com/klr650faq.htmlhttp://www.bigcee.com/klr650faq.html> >> >> >> Yahoo! Groups Links >> >> >> >> >> >> >> > > > [Non-text portions of this message have been removed] > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > > Yahoo! Groups Links > > > > > > > > >