Hello Guys!

I have a pretty "old" OS .12 CV-R. I am planning on rebilding it, and was wondering if the .12CV-RX piston/sleeve would fit AND give me the performance of the .12CV-RX?

I understant that tolerances are a bit tighter, but was wondering if the sleeve would actually fit the engine block, and if the piston would work as supposed to with the wrist pin and the rod.

Anyway, just wondering if I could coax a bit of more power with this type of rebuild in my old workhorse, and not have to buy a new engine.

Thanks, as always, for your smart input!

I could be way off here but i thought the difference between the CVR and the CVRX was the pull start. Like I say though, maybe I am wrong.

how did the .12 cv-r run in the rc10gt?was it fast? did it have a lot of power?
im planning on getting on but im not sure.

thanks.

The only diffrence between the two motors is the pull start. if you get a new piston and sleeve, it will most likly say CV-R and CV-RX on the package.

I may have the models then mixed up, but isin't there a .12CV-R with .5something horsepower, and a second CV-R with 1.something HP?

That's what I'm looking at. Same engine block, but more HP... Now that I think of it, I might be confusing the .12 and 15 OS specs... I'll check the OS page and get back.

Team-A, I loved it for "Legal" racing, but for sheer power output, my basher has a .18... as I stated in a previous post of yours, the .18 IS very impressive.

Shoot! I have a .12 CV!!! Now you see what I mean by old...I didn't even remember the model!

Now, what I MEANT was use the .12 CV-R sleeve/piston combo inside my .12CV engine. THAT"S what I meant. Can this setup be accomplished without modifications to the block?

Thanks!

what .18 do you have?
haven't you shreaded and transmission gears?

thanks.

Team-A, OS CV-r... and no, no shredded gears. I take GOOD care of my trucks.

What do you mean good care? you dont push them hard?
my only inconvinince in buying the .18cv-r is that a lot of people has told me they damaged there trans.
so i want to make sure 100% that i wont have to buy metal trans gears.
what is your gear ratio on the rc10gt with the .18?

thanks.

I have the stock Factory Team tranny.

By good care I mean I have my slipper clutch set right, lubricate every once in a while (quarterly) the truck, and the likes. I push the hard, but not hard as to break them! If you are breaking, you are doing something wrong.

I am extremely pleased with my GT's performance. It's just preventive maintenance, and common sense, required to keep these trucks running.

I remember someone asking this in the past, and then finding out that the answer was no. That CV-R sleeve/piston won't work with your CV. Sorry

On the other hand that CV-R piston/sleeve is quite pricey. Tower still has the OS 18 CV-R[x if you want it] for under 100 bucks, but that price CANNOT last. ...and seriously, talk about a REAL step up in the performance world.

Nevermind, I see that already have one (I need to take my own advice and read the whole thread first...)...

Thanks for the answer, Frost... I was beggining to worry that no one knew the answer.