the 23 has more bottom and top compared to the 21. i switch between the 2 depending on track conditions. I cant qoute on the s7 cause iv never owned one.

hmm site glitch double post^^^^

EBMods Team Driver Pat Mahain Finished 2nd Overall In Both Open Buggy & Truggy! Pat is running Race Prepped .21's with EBMods 30% Nitro. Congratulations Pat!

Mugen Seiki's Young Gun Tyler Jones WON 2 EBMods JS Racing Engines this past weekend after taking down the Wins in both Open Buggy & Truggy. Congratulations Tyler!

[QUOTE=itbvolks;8098425] I have the chance to pick up a NIB race prep .21 for very decent price. Wondering if I should snag it...??QUOTE]

You should give It a shot. I run it in my MBX6 and really like the RP, haven't tried the full mod yet though.

Congrats to Pat and Tyler.

Just wanted to let you guys know that I am running a special right now on .21 Race Preps. Come get em while it lasts! As always Free Shipping!

http://twisted-rc.com/shop/product_i...roducts_id=284

ok guys I have a problem. At my last race my stock engine flamed a few times so I decided to inspect the engine. well it didnt take long to find out that the outside front bearing race was all messed up. So I decided to change it out. I took the head off, took off the back plate and pushed the sleeve out. Now the problem, For some reason I cant get the rod off the crank. Usually on other engines I just use a hook tool to pull the rod off the crank and then slide out the crank. but this engine for some reason will not allow me to do that. Any suggestions?

hmm sounds like maybe you should send it to edd

sometimes, many times, the end of the crank pin builds up a little burr that makes it a bit difficult to get the rod off.....a bit of persuasion does the trick. some of the burr may actually be fuel/lube residue. and, needless to say, make sure that the cranks deeply seated...............i've had this deal with other make engines........

with the sleeve out and the piston at tdc you should be able to stick your pointer finger in and pull it out from the bottom. no tools please!

and/or......the crank bushing/crank pin tolerance may be so precise that removal is difficult

its really just the long rod design. its normal on this engine. once you get it the second time wont be a problem.

yeah thats what is was thinking. Love the engines thou. Gonna try again in a few minutes. Also what size front bearing do I need.

7x19x6

I got the rod off finally. I had to use a heat gun and with some force with my finger and I got it off. Thanks for the help