five stars centerstand?

[bitsurfer001]

I got a good deal on a new bored out cylinder (695cc) and a forged piston to match. Just got it back together recently, and MAN does it sound like its going to fly apart. A friend of mine told me that forged pistons just sound like that, but I'm seeking input from anyone that has installed one in their KLR. Factory compression raito is 9.5/1 and this one is 10.5/1 and am running 91 octane without predetination. Sounds like valve noise, but I just got the head redone and the adjustment is within spec. I've also installed a new balance chain and the doohickey upgrade. And have checked twice that my balance chain has been installed correctly. All the punchmarks on all shafts and gears line up. I've got 250 nice easy miles on it, but not sure how long the break in period should last. I make sure i warm it up properly before I take it for a spin. I'm hoping it will sound better when its broken in... Any background in general on forged pistons and the break in procedure would be greatly appriciated. Thanks, Pete www.razzor-x.com 02 & 88 KLRs

[Pierre]

your engine might be out of balance if the piston is significantly heavier than the standard one. Also, are you sure you don't have broken rings ? Perhaps a compression test or a stethoscope woudl help determine what the problem is.

----- Original Message ----- From: "bitsurfer001" To: DSN_klr650@yahoogroups.com> Sent: Sunday, February 29, 2004 6:31 PM Subject: [DSN_klr650] Forged piston, normal noise? > I got a good deal on a new bored out cylinder (695cc) and a forged > piston to match. Just got it back together recently, and MAN does it > sound like its going to fly apart. A friend of mine told me that > forged pistons just sound like that, but I'm seeking input from > anyone that has installed one in their KLR. Factory compression raito > is 9.5/1 and this one is 10.5/1 and am running 91 octane without > predetination. Sounds like valve noise, but I just got the head > redone and the adjustment is within spec. I've also installed a new > balance chain and the doohickey upgrade. And have checked twice that > my balance chain has been installed correctly. All the punchmarks on > all shafts and gears line up. > > I've got 250 nice easy miles on it, but not sure how long the break > in period should last. I make sure i warm it up properly before I > take it for a spin. I'm hoping it will sound better when its broken > in... > > Any background in general on forged pistons and the break in > procedure would be greatly appriciated. > > Thanks, > > Pete > www.razzor-x.com > 02 & 88 KLRs > > > > > > 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 . > > > Yahoo! Groups Links > > > > > > >

[Devon]

bitsurfer001@... wrote:

>I got a good deal on a new bored out cylinder (695cc) and a forged >piston to match. Just got it back together recently, and MAN does it >sound like its going to fly apart. A friend of mine told me that >forged pistons just sound like that, >

Judging by the before-and-after when I replaced the stock cast piston on my SR500 (9:1cr) with a forged Wiseco (10:1), your friend is talking out of his a$$. A properly fitting piston, with correct ring end gap, doesn't sound any different. It DOES make a "tight" sort of noise for the first 50-100mi or so as the rings bed in, but on my SR500 this quickly went away, leaving me with a bike that uses no oil and plenty of power.

>but I'm seeking input from >anyone that has installed one in their KLR. Factory compression raito >is 9.5/1 and this one is 10.5/1 and am running 91 octane without >predetination. Sounds like valve noise, but I just got the head >redone and the adjustment is within spec. >

Which IS noisy if the valves were set at the outside of spec.

> I've also installed a new >balance chain and the doohickey upgrade. And have checked twice that >my balance chain has been installed correctly. All the punchmarks on >all shafts and gears line up. > >I've got 250 nice easy miles on it, but not sure how long the break >in period should last. I make sure i warm it up properly before I >take it for a spin. I'm hoping it will sound better when its broken >in... >

Did you weigh the stock and new pistons? What clearance was the new piston/ cylinder setup? Devon

[Inwoods650@aol.com]

Happy with the 5 Stars stand. Have bought the DualStar & Sagebrush hardware though, as the 5 Stars hardware was known to fail. Good bolts to keep an eye on every few thousand miles depending on how much the stand is used. The higher grade bolts never failed, but they do bend after extended use, & need replaced. The centerstand! Yup, works well..even did with 3/4" drop links...which I removed last weekend. The links worked Great in getting the CG down (but not ludicrous down) making for a better turning KLR offroad....but watching the Dakar re-runs has me wanting the new KTM950S again, but since it's not on the immediate list...I transformed the mity A14 back into my superbike of the desert. Except for it's not quite at 90ish horsepower, or able to turn an 11sec quarter mile, or as tall. But it's paid for, not Orange, & nearly 100lbs lighter. The centerstand! It's been highly useful. Easy to remove for those rides where you need all available clearance for whoops & such. Great for chain lubes, fork/shock maintenance. Beefy & easy to use. All best. Scott A14 "thunderdog" Sorrento, FL In a message dated 3/2/2004 7:33:40 AM Eastern Standard Time, tjsnrich@... writes:

> I picked up an old centerstand that's got a "Five Stars" label on > it. It looks different than the ones I see on Dual-star etc. It > need a touch of welding before I mount it but I'm wondering if it's > worth using. Any opinions? > > Todd R. > Grapevine, TX USA > '01 K12LTC->E Black > '01 KLR650 >

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