Let's take a look at the OS 12 CV-X an iconic classic small block nitro engine upgrade .12 .15 CV

A look at the OS 12CV-X

[@johndecline4483]

Just found your channel. Nice to see another older guy like me who’s been running these engines since we still had hair, hopes, and dreams. Those three things might be gone now but at least we still have our os engines. Still have two .12’s with the red cooling head and a .15 with the blue cooling head. Have them in Hpi nitro MT’s that I had gotten between 2000-2002. I shelf them now but once every summer I fire them up. Still run fantastic. Look forward to watching more of your videos. Just subscribed. Best wishes buddy 👍🏻

[@NitroTalkwithTodd]

Hey, I still have... hair lol. And plenty of projects to keep busy. I don't currently have an MT, but I'll be making a video on the HPI nitro rush at some point. Thanks for watching!

[@johndecline4483]

@@NitroTalkwithTodd well I’m glad you still have the hair 👍🏻

[@procrastinator1842]

I had one of these! It eventually ended up with enlarged carb, enlarged crank window, extra boost ports, modified timing, knife edged rod, and a gold o.s. hyper head!

[@stevewhite7677]

I watched a video of yours yesterday where you had a old rb engine with the orange cooling head that was sanded down to silver on top and I looked at my older rb tm523 that I still use today in my Traxxas Revo 3.3 race modified truck and the rb on the block is also backwards on one side, I never thought to look until I watched your video but I guess the old-school rb engines all have the initials backwards on one side

[@thomdoers3222]

Cool engine! I'm working on having 3 RS4s with 3 .12cvxs. one needs a pinch job, and I'll do bearings on all of them. Adam Drake just recently started doing pinches on small blocks. So that one will be going to him soon.