R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road

Reply
 
Thread Tools Search this Thread
Old 03-20-2006, 02:34 PM   #1
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default Cleaning engine

Hi!
I got an old Mega SX-21 Evo1 and havent been used for some years.. i wonder how to clean it? i think that needs to be done?

/Anton
Orfeous is offline   Reply With Quote
Old 03-20-2006, 02:37 PM   #2
Tech Champion
 
R40Victim's Avatar
 
Join Date: Jan 2005
Location: N.W. FL___L.A.___Lower Alabama
Posts: 7,823
Trader Rating: 1 (100%+)
Default

Neat thing about old 2 strokes, no moving parts in the valve train. Take it apart, soak in your favorite solvent, and rebuild. You may need to replace a gasket or two. If you can't find the right gasket, high temp liquid gasket works great. Good luck, it's a real pleasure to bring an old motor back to life...
R40Victim is offline   Reply With Quote
Old 03-20-2006, 02:55 PM   #3
Moderator
 
Artificial-I's Avatar
 
Join Date: Jan 2005
Location: Rurouni Kenshin
Posts: 3,459
Trader Rating: 17 (100%+)
Send a message via AIM to Artificial-I
Default

This is pretty much exactly how I do mine:

http://cefx.net/tips/nitro/maintenance/
Artificial-I is offline   Reply With Quote
Old 03-20-2006, 03:13 PM   #4
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default

thanks, that was a good page for instructions

i'm taking the engine down now at the moment.
but i dont know if its wurth it.. i mean. last time when the engine was on my father run it in.. or how to say

the engine has gone on like 6-7 tanks no more..
Orfeous is offline   Reply With Quote
Old 03-20-2006, 06:06 PM   #5
Moderator
 
Artificial-I's Avatar
 
Join Date: Jan 2005
Location: Rurouni Kenshin
Posts: 3,459
Trader Rating: 17 (100%+)
Send a message via AIM to Artificial-I
Default

Its a good idea to probably do it just to check it. If it hasnt been run in awhile it could have some rust. A cleaning of it will ensure this doesnt run around in the chamber once you restart it.

Id also suggest running the car rich for a little bit...then start to lean the motor for power in 1/8th incriments each tank.

You might even want to do the cyrul method , same website different article. He explains how he tunes his motor at the track each time.
Artificial-I is offline   Reply With Quote
Old 03-21-2006, 07:57 AM   #6
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default

i'm following the guide now.. but i dont know what to clean with? and what kind of oil to use to the parts when i assembly again.

im taking photos all the time so i can see how it was assembled
i dont know if i need to take the centax clutch apart?? how can i clean that?
Orfeous is offline   Reply With Quote
Old 03-21-2006, 08:19 AM   #7
Tech Adept
 
flack's Avatar
 
Join Date: Mar 2005
Posts: 240
Trader Rating: 1 (100%+)
Default

I clean the internals and externals with denatured alcohol.
When I reassemble the engine, I use after-run oil to lubricate all the parts.


Doug
flack is offline   Reply With Quote
Old 03-21-2006, 08:37 AM   #8
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default

Ok, i will use 95% denaturated etanol to clean the parts with..
but i dont know what to lubricate the parts with.. i dont have any after run oil. Is it possible to use WD-40? http://www.wd40.com/Brands/wd40.cfm
Orfeous is offline   Reply With Quote
Old 03-21-2006, 08:51 AM   #9
Moderator
 
Artificial-I's Avatar
 
Join Date: Jan 2005
Location: Rurouni Kenshin
Posts: 3,459
Trader Rating: 17 (100%+)
Send a message via AIM to Artificial-I
Default

wd-40 will work. After-run oil is better since it will stay a little longer and absorbs water. WD just displaces it.

I clean my motors with polish. Well at least the piston top , this gets the gummed up material off. I also go ahead and polish the piston sleeve exterior. This is normally tarnished from the fuel.

Then I check my crank and clean the exterior counterweight area if its bad.

Once it looks all brand new. I oil it up and reinstall. You must make sure everything goes back together correctly.

Make note of everything when uninstalling it. Or you motor wont work right and could blow or not even turn over correctly.
Artificial-I is offline   Reply With Quote
Old 03-21-2006, 09:07 AM   #10
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

WD-40 is not recommended if your crank has silicon/epoxy filling in it. It can separate silicon/epoxy from the crank

Marvel Mystery Oil is what a lot of companies are bottling up as after run oil and selling it for $8- $10 for a tiny 2oz. bottle. You can get MMO for $5 for about 16- 20oz.
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 03-21-2006, 09:20 AM   #11
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default

I dont think its filled with epoxy.. the engine is and old Mega SX-21 EV1
Orfeous is offline   Reply With Quote
Old 03-22-2006, 02:17 PM   #12
Tech Regular
 
Orfeous's Avatar
 
Join Date: Mar 2006
Location: Umeň, Sweden
Posts: 293
Send a message via ICQ to Orfeous Send a message via AIM to Orfeous Send a message via MSN to Orfeous Send a message via Yahoo to Orfeous
Default

a friend to me are gonna help me cleaning the engine..
i didnt get the carburettor off.. it was stuck.

im gonna replace the clutch shoe also.. to a better version. "yellow" to the centax.
Orfeous is offline   Reply With Quote
Old 03-22-2006, 03:21 PM   #13
Tech Elite
 
GrandeGixxer's Avatar
 
Join Date: Jun 2004
Location: Waldorf, MD
Posts: 2,924
Trader Rating: 15 (100%+)
Default

I have been known to take the engine to my sink disasembled and wash it with a toothbrush and dish soap. It works good. Make sure not to get anything in the bearings, get all the water out with compressed air, and oil everything heavily with some Marvel when you put it back together. If you use this tecnique and your motor rusts, I am not responsible. You need to make sure to get all the water out.
__________________
Joe Cude
Mugen MBX-7R Mugen MTX-6R Mugen MTC-1 Mugen MRX-6 Mugen MST-1 Tamiya Euro Truck
GrandeGixxer is offline   Reply With Quote
Old 03-22-2006, 03:37 PM   #14
Tech Adept
 
Join Date: Jul 2005
Posts: 204
Default

Quote:
Originally Posted by GrandeGixxer
I have been known to take the engine to my sink disasembled and wash it with a toothbrush and dish soap. It works good. Make sure not to get anything in the bearings, get all the water out with compressed air, and oil everything heavily with some Marvel when you put it back together. If you use this tecnique and your motor rusts, I am not responsible. You need to make sure to get all the water out.


Orfeous,

Stay far far far away from this method or you will be
rc racing dude is offline   Reply With Quote
Old 03-22-2006, 03:39 PM   #15
Tech Master
 
Ivan Dickson's Avatar
 
Join Date: Jan 2005
Location: Cali Love USA
Posts: 1,643
Trader Rating: 12 (93%+)
Cool

How often do you suppose to clean your motor if you race a few times.
__________________
SPECIAL THANKS TO ✦ MY WIFE ✦✦ MOTIV RC ✦✦ GRAVITY RC ✦✦ JGO PAINTZ ✦✦ TQ RC RACEWAY ✦✦ TAMIYA RACEWAY ✦
Ivan Dickson is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cleaning Engine How Often? oggietiu Nitro Off-Road 5 07-15-2008 06:32 AM
Cleaning 0.21 engine brianr34 Nitro Off-Road 6 04-20-2008 11:30 AM
Cleaning an Engine? LosiSuperTruck Nitro On-Road 1 09-04-2005 05:15 PM
Cleaning an Engine LosiSuperTruck Electric Off-Road 1 09-04-2005 03:25 PM
engine cleaning tip rcabj Onroad Nitro Engine Zone 3 04-18-2004 08:34 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 09:52 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net