Engine porting
 

Somebody posted an article and pictures of how to do porting mods to the nitro engine. Would like to thank that person. I know there was some negativity to him encouraging people do do this and screw up their already good runing mill. But I did it similar to the pictures and am very happy with the results. I didnt gain much on the top end, but low and mid range is crazy now, the motor just runs better, idles smoother and smokes more even though I had to retune, but thats ok. I consider myself above average in small engine repair, thats why I went for it. The Mach 28 dynamite has only scalloped crank cuts, but nothing on the sleeve, thats why I noticed so much increase. Its awsome and BTW I'm just a basher not a racer.

RE: Engine porting
 

where are these pics, i would like to see them. someone doing mods is always going to face ridiculing from the public, it has always been that way. i face the same thing and so do all other modders that are trying or have made a name for themselves.

RE: Engine porting
 

my camera wont take a good close up so mine didnt come out too good. Now if I knew how to post a video I have that. Here aew some before the install. I didnt touch the crank, I've read that polishing it makes the motor run bad because the fuel doesnt atomize very well or something like that.

RE: Engine porting
 

i'l see if i can post one, 1 min.

RE: Engine porting
 

How do you smooth out the work after you do the sleeve modding? I heavily modded a k4.6crank and the finish is really rough. I need to know how to smooth it off and then I can polish it

RE: Engine porting
 

the mt.12 was my very first motor i did 5 years ago i still have that motor.

RE: Engine porting
 

Very nice finish on the crank. I did just the same mods on my k4.6 crank, but the finish is very rough. Still have not figured out how to smooth it

RE: Engine porting
 

savage jim YGPM[:@]

RE: Engine porting
 

that was me that posted the how-to pics, and your welcome ;) glad it worked out for you.

Here is the link to the thread
http://www.rcuniverse.com/forum/m_52...tm.htm#5227909

and I'll see if I can find pics of the bits you need to do the work...

here's the final bit I used to polish it smooth before hitting it with the buffing wheels and compounds
http://www2.towerhobbies.com/cgi-bin...&I=LXYA54&P=ML

RE: Engine porting
 

heres some pics of one of my mod jobs i did

http://i107.photobucket.com/albums/m...0crank1013.jpg
http://i107.photobucket.com/albums/m...0crank1010.jpg
http://i107.photobucket.com/albums/m...0crank1007.jpg
http://i107.photobucket.com/albums/m...0crank1015.jpg

RE: Engine porting
 

how did the epoxying work out for you and what type did you use? I thought about giving it a try with some standard 5-min 2-part epoxy.

RE: Engine porting
 

Hey,

I own a hot bodies lightning pro and also fancy port and polishing the engine, my truck has the .26 engine, can anyone recommend any website where i could find step by step instruction with pictures???

Cheers

RE: Engine porting
 

I believe I just did a couple posts up :S

RE: Engine porting
 

supertib, dude i need that mill in your garage, send it to, LOL

RE: Engine porting
 

Yeah the mill is sweet, its actualy my brothers, we currrently dont have the tooling for these little motors, so that crank in my pic is 100% hand done....

RE: Engine porting
 

ya mine to[:@]

RE: Engine porting
 

You need to get a rubber attachment, dremel makes one. Personally I use an old rubber dental tip from my work. But just a rubber polishing tip is all you need. Or the dremel felt tip with polishing compound works too. BTW guys I love the mod pics, this is cool, way cool.

RE: Engine porting
 

MM, so have you started to play with timming, you will like it, and the carbs

RE: Engine porting
 

I'm a NOOB to this mod stuff, I still need to bash when I get the bug.

RE: Engine porting
 

i hear ya if i can help with anything let me know[:@]

RE: Engine porting
 

right on, thanks i appreaciate that.

RE: Engine porting
 

hello everyone anyone ever try ceramic coating the inside of there motor ?? great for driving heat out of real motor

RE: Engine porting
 

to cool is bad, 200 -220 perfecto:D

RE: Engine porting
 

what does polishing the crank do it alone

RE: Engine porting
 

do you mean what does it do if you only polish the crank?