Hochleistungskolben...!!! Will these fit my Audi ?
Quality right there.
Quality right there.
Wossner Polaris 800 Pistons
- Thread starter realbass
- Start date
O
Hi, you say RK Tek "Wossner" piston is very different from Wossner piston. Totally different design. How do you know that your design is better than Wossner?? Did you test them both for long time? Lots of people I been talking to are very happy with Wossner piston. Would you say Wossner are as bad as Polaris pistons or are they equal to you're "RK Tek design?
H
Wossner makes the poo 800 piston! My dealer quoted me $360 for both oem piston kits.
N
Are you telling us that Wössner is the manufacterer of the OEM polaris pistons? Because if so, i'm afraid you are misinformed.
Where does he say that his design is better? He says different, manufactured by Wossner but designed by RKT. Why try to put words in someone's mouth. Looking to pick a fight? I have never used RKT, but I appreciate his hard work and diligence in trying to bring improvements to our sleds. Have a hard time with so many people that look to bash on guys.
R
C
I swear that Kelsey has a target painted on his back.
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O
Oups, didn't meant to pick a fight. I just wanted argument why choosing rk tek Wossner 350$ piston instead of Wossner 250$ pistons.
R
X2, I was under the assumption that OEM were Mfg. by ELKO, and Cast, where as the Wossner's are Forged, at least the RKT and Bikeman Spec'd pistons are.
Our Durability Kit Pistons are Designed by us and Made by Wossner, We also sell direct 800 replacement Wossner pistons.
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H
Haha I had asso and wossner mixed up my bad! After all the reading I have done it looks like the only down side to a forged piston is they expand more than cast so you have to let them get to running temp before you run them or you risk the chance of have a cold seized engine.
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the difference we have found between cast and forged pistons is the forged pistons collapse way sooner then a stock cast piston. We measure all pistons we pull out of a dragon or a pro to see how much they collapse.
Our Durability Kit Pistons are Designed by us and Made by Wossner, We also sell direct 800 replacement Wossner pistons.
in your kit you express that the taller piston (and shim under the cylinder) gives more crank case volume which makes more power. this is a question a lot of guys have been looking for an answer to. do you have any proof or data to support this? and does this have different effects at low altitude vs high altitude?
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S
Do a search they have posted dyno #'s
bmp
i can see dyno numbers but they are numbers with other modds, also dyno'd at low elevation im just wondering what happens when you take this kit up to 10,000-11,000 ft with less air and more crankcase volume does it still make power or lose power?
i can see dyno numbers but they are numbers with other modds, also dyno'd at low elevation im just wondering what happens when you take this kit up to 10,000-11,000 ft with less air and more crankcase volume does it still make power or lose power?
I
And that, right there, is the million dollar question. History tells us we need to decrease the crankcase volume at elevation, but that is assuming the motor is designed with enough volume in the first place. Given the physical size constraints placed on the 800cfi...who knows. Maybe someone smarter than me.
What I do know is that installing any of the "fix kits" on an 800 cfi at anywhere close to sea level greatly improves all characteristics of the motor and they flow more cfm as well and need more fuel. We've probably built over 100 of them in the past 4 years and every one of those sleds ran much stronger than when it had stock pistons. But they also make more compression, 10-15 psi on average. I don't see any of these kits actually losing power regardless of elevation.
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