Wossner Pistons - Kawasaki KLR 650 Forum
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post #1 of 11 Old 10-03-2018, 09:10 PM Thread Starter
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Wossner Pistons

Anyone had any experience ordering a part from these guys? I've been getting the runaround from them ever since I ordered a piston for my 650-B way back in late April. I don't like to be pessimistic, but it's looking like the best thing to do is give up on the part ever showing up and buying another one from somewhere else. Somehow they have no record of my order, and I'm now jumping through hoops and digging through records and old emails to resolve an issue that is clearly originates on their end. It's becoming a real pain.
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post #2 of 11 Old 10-04-2018, 11:31 AM
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no I haven't but I've had stellar service from Eaglemike over the years.....and he has the best KLR piston anyhow.

Dave
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post #3 of 11 Old 10-04-2018, 01:28 PM Thread Starter
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Yeah, I originally tried to get it from Mike, but he doesn't ship to where I am, and trying to ask about their parts and shipping options returned no responses. I therefore moved on. I do have his doohickey in there, but I bought that Stateside. I tried Schnitz as well, but they didn't have a piston I could use in my Tengai. She's too old; thinner cylinder wall would be too risky with a 685 kit. I'm pretty limited in options over here; KLR parts are a tough find as I've got one of maybe three KLRs in the entire country (and one of them is an '85 in parts all over my friend's garage).
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post #4 of 11 Old 10-04-2018, 01:52 PM
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Quote:
Originally Posted by DPelletier View Post
no I haven't but I've had stellar service from Eaglemike over the years.....and he has the best KLR piston anyhow.

Dave
Doubtless, EM has quality merchandise. The Woessner (sp?) piston, however, I think, is another breed of cat. As in, HIGH COMPRESSION. Maybe EM has an inventory of similar pistons; I'm unaware of them.
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post #5 of 11 Old 10-04-2018, 02:46 PM
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Quote:
Originally Posted by Damocles View Post
Doubtless, EM has quality merchandise. The Woessner (sp?) piston, however, I think, is another breed of cat. As in, HIGH COMPRESSION. Maybe EM has an inventory of similar pistons; I'm unaware of them.
Yeah, I know.....we've debated the higher compression pistons' pros and cons many times; I think people buy them thinking they will get a noticable increase in power due to the compression increase alone.....which they won't as it'll be somewhere between a 1 and 2 hp difference. The Wossner piston is also heavier and of course, you'd now need to run a higher octane fuel.

As always, people can do as they wish but I don't see the logic in it, myself.

Dave
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post #6 of 11 Old 10-04-2018, 04:45 PM
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If I wished to optimize KLR engine performance, with adequate resources, I'd install a second oversize Woessner piston. Raising the compression ratio remains a tried-and-true horsepower increase; yes--premium fuel may be required.

I invoke no logic in my opinion, beyond . . . is it LOGICAL to hop-up a KLR650 at ALL?

Just for discussion: Why, indeed, hop up a KLR650? Don't see KLRs typically in Moto-Cross, Hare Scrambles, Flat Track, Drag Strip, Speed Trials, or other competitive circles.

Hop it up (tuned exhaust, trick cam, custom fuel (carburetor) delivery, ported-and-polished head, degreed (and advanced exhaust) cam . . . Then, whatcha got? Something to go down to Main Street on Saturday night and drag the Harleys at the stop lights?

DISCLAIMER: No value judgment intended. Just askin'!

-----------------------------------------

Just an example; this calculator says, going from 8.0 to 12.0 compression ratio raises horsepower by 12 percent.

http://www.bgsoflex.com/cgi-bin/crch...8.0&newcr=12.0

I somehow lost my link to the calculator, but the chart accessible from the link provided below is rich with examples:

Compression Ratio Increase vs. Power Comments

Stock, I think the KLR650 compression ratio is 9.8:1. The chart shows (round off to 10.0 compression ratio) power increases with respect to compression ratio increases.

Last edited by Damocles; 10-04-2018 at 05:21 PM.
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post #7 of 11 Old 10-04-2018, 05:39 PM
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Yes I know; I used to build and restore classic cars: I built my Superbee's 440-6 at 11:1 up from 10.5:1 for Pure Stock racing. I had to use a mixture of 94 and race gas.

On the KLR, my mantra is thus: modify away! ....as long as it doesn't hurt simplicity, reliability or longevity. I believe the 685 is the best kit out there 'cause it's light, it's a better piston design and ring design than stock, lessens vibes, increases power all with no downsides that I can see. I just don't see having to use premium fuel as a good thing on a "zombie" bike that may get ridden in far out places....all for an additional 1-2hp (according to your chart)....and to get that hp you have to use a heavier piston that isn't perhaps the latest and greatest KLR piston design out there.

LOL; everyone's "line in the logic sand" is going to be different. I think it's perfectly fine to install $3k worth of suspension, brake and protection mods.....and I've done the jetting, airbox mods and exhaust on both my KLR's. A 685 kit sits on my shelf but I haven't installed it yet....at the same time I can't see bumping the compression, installing "hotter" cams or aftermarket carbs because of A) real or imagined decreases in the aforementioned attributes or B) because it reeks of the despiration of trying to turn the KLR into something it's not.

I can't decide and I don't necessarily make sense.....but I'm OK with that. :-)

Cheers,
Dave
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post #8 of 11 Old 10-04-2018, 05:58 PM
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Quote:
Originally Posted by TaiwanMotoGuy View Post
Anyone had any experience ordering a part from these guys? I've been getting the runaround from them ever since I ordered a piston for my 650-B way back in late April. I don't like to be pessimistic, but it's looking like the best thing to do is give up on the part ever showing up and buying another one from somewhere else. Somehow they have no record of my order, and I'm now jumping through hoops and digging through records and old emails to resolve an issue that is clearly originates on their end. It's becoming a real pain.
From which company, in which nation did you order a Wossner piston from?

Did they process your order on your credit card? As in, is your order paid in full & they have your money!

Does anyone know, from where did Tom Schmitz order his Wossner piston?

I think I have read of KLR riders in South America or Mexico having access to possibly Niks or Athena or possibly it was Pro X piston & ring sets to fit the KLR650 engines.

I think I have read of people who have used a Honda XR650L piston in the KLR650 engine, but it lowers the compression ratio just a little due to piston pin position / deck height.

pdwestman
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post #9 of 11 Old 10-04-2018, 11:36 PM Thread Starter
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I ordered mine from the US distributor. From my end, in all the records I can dredge up, my order is fully paid. I even made an account on the Wossner site to see if it would make anything apparent, and the account there says that the order is paid and already fulfilled. I have nothing to show for it.

As for the choice, Wossner's piston comes at a much better price than everybody else's. Tack on all the shipping I've gotta go through to get a part to Taiwan and I start to consider the price with intent. The Wossner site says that their KLR piston compression is actually the same as OEM. I wouldn't mind the higher octane gas, though. The KLR doesn't burn much in my opinion.
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post #10 of 11 Old 10-05-2018, 10:37 AM
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One of the things that I find really disturbing is just how many things are sold so inexpensively on ebay (in the USA & Canada) with very cheap or even free shipping from mainland China or any of the other SE Asian countries.
The ships or the airplanes have to go back to those countries to pickup another load, whether they return totally empty, half full or totally loaded. Why is there such a large freight price discrepancy for product going to those same countries?

I would think that the Wossner distributor would still have record of which transport company was used (supposedly used?) and be able to supply you with the Tracking Number from the package. So you should be able to obtain the shipping log data from the transport company on your end.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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