R/C Tech Forums - New engine that’s been sitting awhile damage (pictures)

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Matt Piva

01-09-2019 12:46 AM

New engine that’s been sitting awhile damage (pictures)

Hey guys I had an engine tonight I pulled apart from around 2013 I never used, from the pictures you can see some major looking corrosion. To my knowledge I bought this brand new, I believe it’s new but I know time has had its way with my internals and I want to use this engine, can this be cleaned? The engine is a crf 7 port engine. I got this because Cody king won the worlds with the 5 port and was told the 7 was a monster version. I wanna bring it to life.
https://cimg0.ibsrv.net/gimg/www.rct...e52b5493d.jpeg https://cimg2.ibsrv.net/gimg/www.rct...ee5a2ead9.jpeg
https://cimg1.ibsrv.net/gimg/www.rct...104e4603e.jpeg
https://cimg3.ibsrv.net/gimg/www.rct...499c758d3.jpeg
https://cimg4.ibsrv.net/gimg/www.rct...ac620bcb8.jpeg
https://cimg7.ibsrv.net/gimg/www.rct...2c04650a1.jpeg

Matt Piva

01-09-2019 01:04 AM

Any help is great

NitroVein

01-09-2019 02:21 AM

Probably dried oil, use some denatured alcohol and try to wipe it off. Flush the bearings and make sure they don't feel gritty, and remove piston pin so you get it all out.

Soyer

01-09-2019 03:19 AM

Try soaking in nitro

timjs

01-09-2019 04:02 AM

I'd replace the bearings but clean everything else. Assuming that's actually rust, which it appears to be.

Roelof

01-09-2019 04:27 AM

Quote:

Originally Posted by timjs (Post 15371266)

I'd replace the bearings but clean everything else. Assuming that's actually rust, which it appears to be.

Dryed up oil can look the same. Yes, it is wise to take out the bearing also t let it soak in nitro.

Matt Piva

01-09-2019 10:52 AM

Judging by how I can wipe this rust looking stuff off with my finger I’m guessing it’s dried oil. I don’t have access to a bearing puller so i think I’m just going to put everything I can in nitro and let it sit a awhile then use a tooth brush.

houston

01-09-2019 10:53 AM

Quote:

Originally Posted by Matt Piva (Post 15371521)

😁

Matt Piva

01-09-2019 01:43 PM

Quote:

Originally Posted by houston (Post 15371522)

😁

u love seeing that name lol

houston

01-09-2019 10:37 PM

Quote:

Originally Posted by Matt Piva (Post 15371635)

u love seeing that Matt Piva name show up now that u know who it is huh 😉

something like that ....lol

soak it in fuel ..... spin everything ..... might be some flaking of steel on the races though

stadiumangt

01-23-2019 08:33 PM

a soak in denatured alcohol will clean most of that off

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