Kyosho Nitro Brute Restoration

[coxbros1]

Hi, I aquired a Nitro Brute this weekend, it pretty rough, gonna do a complete box art restoration (except going with oil filled shocks). I will update the thread as i progress. As u know, parts for this are scare so if anyone has anything i need i would be interested in them for some cash. I need alot, but for starters i need at least one good wheel and tire, maybe more. I will be lightly driving it when done. Thanks in advance for any help sourcing parts

[coxbros1]

The engine is an OS cz, not sure if its a .10 or .12 because it looks smaller than my .12cz in my Rampage truck....anyway, the engine and carb were frozen, i soaked it all in nitro fuel then disassembled it soaking and cleaning each part. Its all free now, really smooth. The piston will almost push all the way thru the sleeve, so a repinch is in order unless i can find a

piston/sleeve....but i need to find out which exact engine it is. The carb is tiny, much smaller than my other .12. It just says CZ on one side if case, and OS Max on the other. Any info would be appreciated

[coxbros1]

I found out what it is. Its a 1986 OS Max CZ -2. I assume .12....also, i hate that my pics are sideways and they were up when i downloaded them, Benji, "thumbs", what am i doing wrong?

[jkelm24]

I love it!!! My first exposure to nitro was by way of the Nitro Brute. Lot of nostalgia there...

The Nitro Brute used the OS CZ-2 .12 engine. It was similar to the CZ-R that was released a short time after the CZ-2. The 'R' had a higher output. I remember it having a different carb, and a different piston and sleeve.

CZ-2
https://www.osengines.com/history/ostimeline12.html
and
https://www.osengines.com/parts/xr11210.html

CZ-R
https://www.osengines.com/history/ostimeline13.html
and
https://www.osengines.com/parts/xr11220.html

[coxbros1]

Thanks! Your link to those part #s scored me a
cz-2 piston and sleeve new for $35! I did already package the original up and paid $8 shipping to RayAracing, but he wont charge me the $24 to repinch if he doesnt get the p/s. So i lost $8, no biggie. I also scored a nib .12 cz-r for $75 shipped just in case the cz-2 doesnt work out.

[jkelm24]

Cheers! Can't wait to see the build.

[THEYTOOKMYTHUMB]

I found out what it is. Its a 1986 OS Max CZ -2. I assume .12....also, i hate that my pics are sideways and they were up when i downloaded them, Benji, "thumbs", what am i doing wrong?

What is a Kyosho? Classic score! I think it's a Samsung thing. What I have to do is text myself the image, save the attachment and then post that version of the pic. Then it's right side up. It takes an extra second, but it's worth it.

[coxbros1]

Not sure how to do that, but will try! More pics tommorrow

[coxbros1]

I got a parts truck with the purchase, luckily it came with this super rare Thorp axle kit to replace those cheesy plastic stock driveshafts. They were rusty but i got cleaned up pretty good. I rotated this pic 45degrees right, hopefully it straight

[coxbros1]

Gears in great shape, full bearings in tranny

[coxbros1]

The tranny wasnt smooth when i got it, and it wasnt smooth when reassembled it. The pinion gear was pushing to hard on the ring gear, so i shimmed it with those little silver shims a few thousands. Also the bevel gears that press onto the axle shafts are pressing to hard on the differential gears....so i shaved a few thousands off the backside of those to get some clearance

[coxbros1]

Tranny all cleaned up, rotates smooth and free.
Thumbs suggestion about texting yourself the pic 1st then choose that pic fixed the upside down pics

[coxbros1]

I really like the rear suspension compared to other trucks of this era. Those rod ends keep the rear knuckle from turning. If u take the rear one off u can adjust toe in or out, not that i am gonna that.

[coxbros1]

[THEYTOOKMYTHUMB]

Coming along nicely! Pics are right side up too. I no longer spill my beer when I go to look at them...