A Look Inside an MRC Tuned REDS 521 Sport

[@johndavidson402]

It's me great video! You really helped me with the Dynamite. 21 modifications!

[@gainsrc]

I'm dealing with the same detonation after engine gets over 210f. Also it will not idle unlessI lean it like crazy. This does not happen until it gets to temp. So you are saying .2mm shim helped? Also what plug are you were uou running? Sry if I missed that in the video..

[@moralesrcdesigns3784]

The engine ran great the way it came out of the box, but I had to be pretty spot on with the tune or else it wouldn’t seem to run right. Adding the shim definitely calmed the engine down in terms of erratic the idle and throttle response was. It widened the tuning window a bunch and made it way more forgiving without sacrificing any sort of power. I’m running an O.S. p3 gold plug right now and it hasn’t given me any problems. Keeps the engine responsive and idle consistent without being erratic

[@flaviorodrigues9168]

How does it feel with the new head shim? I was more stable and easy to tune??

[@moralesrcdesigns3784]

Made more power than original from my mods, but the headshim calmed down the power delivery so it’s still drivable. It also tuned a lot easier and the idle was much smoother

[@blow9899]

Hi sir can i used rot0r starter to reds engine

[@moralesrcdesigns3784]

No. You need a specific crankshaft for pull start and rotostart and reds doesn’t have one