Posts
373
Joined
11/8/2011
Location
Houston, TX
US
Edited Date/Time
6/21/2018 9:40pm
Currently in the midst of an engine rebuild for my 2006 RM250, and I have been considering coating the bearings, lower rod bearing, rod, wrist pin, wrist pin bearing and transmission with the microblue coating. When I called microblue to inquire about their service they suggested coating the piston, piston rings and cylinder as well. When talking to microblue, they referenced "project two50" which I hadn't heard of up until a week ago. After scouring through a variety of old Google searches and forum topics I came across a few threads relating to "project two50." If I am not mistaken, this project never really worked out.. Upon further discussion with microblue, I was informed that once all of the aforementioned engine components were coated, I would need to jet up approximately 15%. After thinking about it, that seems like a huge jet change for some engine coatings. If recall correctly, I remember reading on TT a post from a user and affiliate with project two50 that the engine required a 215 main jet in order to run properly. I believe it was a 2010 yz250 and I think stock they are somewhere in the neighborhood of 175? For anyone familiar with this coating, what about the coating requires such a significant increase in fuel vs the same motor with no coatings? Have any of you coated all of your internal engine componets with this coating and what was the result? I have been told almost every single race team, factory and privateer, use this coating.
what about other coatings? dlc the wrist pin, ceramic crank bearings? isf your crank, could even do a dlc coated crank pin.
Www.wpctreatment.com
The Shop
If you running 100:1 - 200:1, you already have increased the amount of fuel, why do you need to re-jet +15% on top of the richer fuel mixture?
I sent the entire transmission to microblue for their coating (WS2) and the pieces look pretty good. The face of each gear looks significantly smoother. Prior to coating microblue super finished all of the pieces. Also, I sent all of the transmission bearings, main bearings and cylinder. I sent my piston assembly and crank shaft to Crank Works for balancing, and after balancing Crank Works sent the rod, lower rod bearing, wrist pin, wrist pin bearing, piston and rings to microblue for coating. Started reassembly of the motor tonight starting with the tranny, and I will post more pictures of the piston assembly, crank etc. in the coming week.
The negative, once coated, microblue sent the pieces back without cleaning. It's taking a lot of varsol soaks, WD-40 and elbow grease the clean all the what I assume to be WS2 residue off. You'd think a company that talks and thinks so highly of its friction reducing coating would at least clean the pieces prior to return.
We tested with Brian Herta a few years ago with Indycar transmissions and WS2. They were having cold welding issues in high g turns and oil starvation. WS2 solved the problem. Went from needing 18 quarts of trans fluid to prevent starvation to running 8 quarts and WS2. Ran a 500 mile test with a dry trans, no fluid, only WS2. No galling, no cold welding, no failure.
I coat my own engines every time i buy a new bike. Doing it right now on a yz250 2 stroke.
Pit Row
But I don't remember that bike actually surviving any races.
Out of curiosity, how do you apply your WS2 coatings?
Microblue bottom end ready for assembly.
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