Originally Posted by Speedyrob (Post 7475178)

Part #02010-001. Should fit every Engine, Clucth. I tryed it on my losi 4 shoe and fit perfect the way they its made it well fit any motor im asuming not 100% but really cant see how. A great price too at only 16.99 give or take at you local hobby shop. I TRULY think it well make you engine bearing last longer And Your motor due too not any have mud dirt geting any were it every again. The rb Shark 9 a great motor but im really laking top end go to try a novarossi 9886 pipe with the L shape ofna header to see if i can wake it up. My temps are around 260 i know you shouldnt go by temps but all my other Rbs run around 220-250 with great power. What do you think Chris P. I feel i have a good bit of fuel thought it 2 1/2 gallon and more. Thanks for any help bro Speedyrob

Originally Posted by Speedyrob (Post 7489521)

Going to try and test the nov 86 .Igave the motor one more try this past weekend with stock pipe and 8mm restrictor temps hot 270 and still no topend. I was geting past on the straight like i was sitting there at my points race. I think the 2045 to long for this motor. Once again loving the RB Engine Protector im not a sponsored driver just love products that work and on ANY setup. Track was muddy this weekend can home pulled the protector off and the bearings clean as can as new Wow. speedyrob

Originally Posted by Rick57 (Post 7498032)

I have a WS7 III that I have rebuilt. The engine has been broken in using the "factory settings". I am struggling with a base line "racing tune". There seems to be a some "lag" coming out of turns. I am using a 2045/198 pipe set. 1.0 clutch spring with a stock RC8 flywheel. My gut feeling is the LSN if off. I know RB's are sensitive to LSN settings. If my memory is correct, RB's like rich LSN settings? Can some body give me a starting point for my HSN/LSN settings as well a a good base line temp? I live in Atlanta, Ga and run Byron 25%.

Originally Posted by Chris Peralta (Post 7498070)

You don't want to tune these engines with a rich LSN, that will cause you flame outs after getting refueled. My WS7's LSN is normally between 4.5 and 4.75 turns out. That is generally close to flush or out from flush a little. The WS7 is more of a top end engine, I run a Losi buggy that comes stock with 13 48 gearing and I always changed out to 13 50 to get the bottom end I wanted, the engine still has plenty up top for long straights as well. Tune the engine so the bottom is nice and crisp and responsive. If after being on the track for 5 minutes or so you notice the low end power really falls off you can fatten up the bottom some.

Originally Posted by Rick57 (Post 7498100)

Been there done that on the flame outs after fueling!!! So it appears that you run yours not far from the "factory" settings; HSN 3.5 LSN 5? There is the option to go with a larger spur gear on the RC8 buggy. Maybe I should try that as well? Never had a problem with top end! That is why I LOVE this engine! Thanks for you help!! I have added a turbo head button as well and run an O'Donnell T97 plug. I have played with the T77 as well.

Originally Posted by TIX (Post 7528013)

is anyone running their C6USA in an 8T 2.0?
are you running stock gearing and what size venturi are you running?

im down to a 6.5 and i am thinking of going up a clutchbell size to smooth out the power a little bit

Originally Posted by BSC (Post 7528708)

Do you know much about the cross 10 Chris ?
I'm interested in one but can't find anything on them.

Originally Posted by Chris Peralta (Post 7528040)

I run mine in a 2.0 truggy. I race at 6,000 feet elevation so with all the horsepower that I lose from that I run the stock gearing. If your going to change the gearing I suggest you go from a 50 tooth spur to the 48 tooth spur, 2 teeth on your spur gear is less dramatic than 1 tooth on the clutch bell. I myself run a 7.5 venturi in my USA. but have tried many sizes, I always seem to like 7-7.5 the most and still easily pit 10 minutes.

Originally Posted by BSC (Post 7518529)

Have a Killer10 on the way .
Will be running OD97T plug
Other than the 2045 pipe with 192 header , what other pipes have people tried with great results ?
What run times are people getting out of this motor?
Any tuning advice for this motor
and what type of life should i expect ?
Should i change the rod early on or run it till it lets go ?
Are the bearings holding up alright ?
I think that is enough questions , i've got them all covered in 1 post :lol: