R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-15-2010, 09:13 PM   #16
Tech Elite
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,079
Trader Rating: 67 (100%+)
Default

I would not touch it with anything that would round the corner or touch the sides. I use some 600-800 grid wet sandpaper on a surface plate with wd-40 and it cleans right up. When I resize a sleeve I always clean up the top of the piston, it does have some peformance gains.

Rex
__________________
Rw modding and engine repair http://www.rw-mods.com
Sleeve resizing $15.00/ motor rebuild $30.00
Argus engine distributor/Avid bearings/ Alpha engines/
Fx Royal engines/ Maxy Engines
e-mail rwmods@yahoo.com Rex Welch
22Racer is offline   Reply With Quote
Old 09-15-2010, 09:21 PM   #17
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

after run oil
__________________
"You are not understanding the fundamental principles of my fragmented personality"

Mugen
dreaux is offline   Reply With Quote
Old 09-15-2010, 09:22 PM   #18
Tech Elite
 
merdith6's Avatar
 
Join Date: Oct 2009
Location: Brazoria, TX
Posts: 2,350
Trader Rating: 3 (100%+)
Default Yep

Quote:
Originally Posted by 22Racer View Post
I would not touch it with anything that would round the corner or touch the sides. I use some 600-800 grid wet sandpaper on a surface plate with wd-40 and it cleans right up. When I resize a sleeve I always clean up the top of the piston, it does have some peformance gains.

Rex
Good advice. Be really careful about the edges for sure.
__________________
Mad Dog drives a Mugen MBX-7, Novarossi engines, Clockwork Racing, Futaba radio, AKA/Proline Tires
merdith6 is offline   Reply With Quote
Old 09-16-2010, 03:47 AM   #19
Tech Addict
 
Join Date: Nov 2008
Location: tallahassee, FL
Posts: 695
Trader Rating: 29 (100%+)
Default

i use fine steel wool and some wd-40
__________________
kyosho mp9:novarossi 21-4C, nova 2084, 7955TG, dx3R
slayyer is offline   Reply With Quote
Old 09-16-2010, 06:00 AM   #20
Tech Lord
 
Frank L's Avatar
 
Join Date: Dec 2008
Location: NorCal
Posts: 12,500
Trader Rating: 148 (100%+)
Default

Wipe it off with some nitro cleaner or kalguard degreaser and leave it alone. So what if it's not bright and shiny. I hardly ever clean the top of the piston or anything inside the engine unless I need to take it apart and replace bearings.
__________________
- X-Ray/ RC America Team Driver - MKS -
- XB8 - XB8T - XB8 E - OS Spec III - B2102 - 4PXR -
~ SSC ~ Godfather ~ Ironman ~ ButterySmooth ~
Frank L is offline   Reply With Quote
Old 09-16-2010, 06:23 AM   #21
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 3,644
Default

kalguard degreaser and that magic clean sponge thing... (the wife thinks shecleans alot because they keep disappearing)
__________________
TLR - Spektrum - Horizon - TLR 8ight 4.0 - TLR 8ight-T 4.0 - TLR 22 4.0 - Orion
token is offline   Reply With Quote
Old 09-16-2010, 06:25 AM   #22
Tech Addict
 
jamiekerr14's Avatar
 
Join Date: Dec 2008
Location: Uk
Posts: 607
Default

lol

I dont tend to clean the piston head, Or tinker with the internals of my engines much. But I just use some ARO and a cloth and try to wipe the most off. I dont like the idea.. of maybe loosing a tad performance with the chance of damaging the internals..

(If it ain't broke.. dont fix it) haha
__________________
Xray XB4
Supported By:
RC Disco
jamiekerr14 is offline   Reply With Quote
Old 09-16-2010, 06:46 AM   #23
Tech Champion
 
Maximo's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2005
Posts: 7,900
Trader Rating: 11 (100%+)
Default

I just use my thumb and a little nitro fuel.....i soak the piston top in a little puddle of nitro fuel for about 20 minutes then use my thumb/ thumbnail to scrape the carbon off...
__________________
http://www.thenitroshop.com/
Maximo is offline   Reply With Quote
Old 09-16-2010, 06:59 AM   #24
Tech Master
 
chicky03's Avatar
 
Join Date: Mar 2002
Posts: 1,979
Trader Rating: 1 (100%+)
Send a message via AIM to chicky03
Default

You never want to clean the piston.

Maybe it's ok to clean the top of it but that's it. The carbon on the sides of the piston is from castor and it helps protect and gives the engine a good seal and lubrication. It's also best to leave the top all carboned up because then you can get a good read if the engine was running too lean if the carbon goes away by itself and there is pitting on the top.

Some fuel make the piston have gummy and sticky residue, That you want to clean off with a rag and some fuel but the piston should always be as black as you can get it.
__________________
Serpent America, Picco, Desoto Racing, Motiv, J Concepts, Nitro Pro fuel, PT RC Racing Oils, TQ Wire(best wire ever!), BSR tires, Arrowmax, Xceed, Sanwa, Amain Hobbies, MIP, Getcustomized, EZ Customs
chicky03 is offline   Reply With Quote
Old 09-16-2010, 07:31 AM   #25
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 3,644
Default

Quote:
Originally Posted by chicky03 View Post
You never want to clean the piston.

Maybe it's ok to clean the top of it but that's it. The carbon on the sides of the piston is from castor and it helps protect and gives the engine a good seal and lubrication. It's also best to leave the top all carboned up because then you can get a good read if the engine was running too lean if the carbon goes away by itself and there is pitting on the top.

Some fuel make the piston have gummy and sticky residue, That you want to clean off with a rag and some fuel but the piston should always be as black as you can get it.
Well this a first for me to hear.... learn something new everyday. interesting.
__________________
TLR - Spektrum - Horizon - TLR 8ight 4.0 - TLR 8ight-T 4.0 - TLR 22 4.0 - Orion
token is offline   Reply With Quote
Old 09-16-2010, 07:52 AM   #26
Tech Fanatic
 
Join Date: Nov 2002
Location: 4373 Creek Road Chaffee,NY 14030 USA (716)783-5198
Posts: 772
Trader Rating: 23 (100%+)
Default

Quote:
Originally Posted by chicky03 View Post
You never want to clean the piston.

Maybe it's ok to clean the top of it but that's it. The carbon on the sides of the piston is from castor and it helps protect and gives the engine a good seal and lubrication. It's also best to leave the top all carboned up because then you can get a good read if the engine was running too lean if the carbon goes away by itself and there is pitting on the top.

Some fuel make the piston have gummy and sticky residue, That you want to clean off with a rag and some fuel but the piston should always be as black as you can get it.

I dont nessisarily agree with the "piston black as you can get it" point , But overall good advise to leave it alone. My prospective of excessive cleaning of any surfaces effecting the sealing capabilities these little ringless 2 stroke engines is detrimental. Furthermore, if the piston to sleeve bore clearance is altered a tenth of one thousandth of an inch, you had better be capable to adjust (resize) accordingly. In short, you will simply be effecting how the piston is seated in bore, and may not reseat as well when engine reassembled. I don't touch my own engines unless idealing becomes erratic / see performance go flat, and openly suggest the same.

RayAracing
__________________
RayAracing piston+sleeve reconditioning-resizing Tooling+Services ALL Buggy, Truggy, Car, and Truck engine models .12 thru .50 since 2001
SHIPPING:4373 Creek Road, Chaffee, NY 14030 USA
PHONE: (716)783-5198 EMAIL: RayA@RayAracing.com SERVICE: http://www.rayaracing.com/
TOOLING: http://www.rayaracing.com/prodtooling.htm
RayA is offline   Reply With Quote
Old 09-16-2010, 08:06 AM   #27
Tech Master
 
Akhor's Avatar
 
Join Date: Feb 2008
Location: Alberta,Canada
Posts: 1,280
Trader Rating: 7 (100%+)
Default

Thanks for all the advice!

I ended up putting some cold oven cleaner on it and it whipped right off. I did not really like the idea of sanding as it may effect the overall performance if I screwed it up.
__________________
--Blaine--
VBC D07, VBC D08
Mugen MBX 7, Mugen MBX 7 Eco,Mugen MBX 7r, Mugen MBX 7r Eco
www.rcgears.net, www.carcar.ca, www.karz.ca
Akhor is offline   Reply With Quote
Old 09-16-2010, 06:23 PM   #28
Tech Addict
 
sluggo_sx8's Avatar
 
Join Date: Apr 2009
Location: Canada
Posts: 613
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by token View Post
that magic clean sponge thing... (the wife thinks shecleans alot because they keep disappearing)
them things are awesome for cleaning everything r/c, also works great on mx bike plastics,car rims etc etc
sluggo_sx8 is offline   Reply With Quote
Old 09-16-2010, 11:41 PM   #29
Tech Apprentice
 
Join Date: Jul 2005
Posts: 80
Default

Quote:
Originally Posted by bopracer View Post
Autosol.
+1 for autosol. Put some autosol on some cloth and you don't need much pressure for the carbon to come off, hence no material will be taken off.
liquidsky is offline   Reply With Quote
Old 09-17-2010, 05:02 AM   #30
Tech Elite
 
savagesam's Avatar
 
Join Date: Jun 2008
Location: bayside, melbourne
Posts: 2,040
Trader Rating: 8 (100%+)
Default reply

What about the crockpot idea with some radiator anti freeze coolant, just remove the piston, e clips, rod, sleeve and wrist pin place them in the crockpot less the e clips and boil them for 12 hours...

I have never done it but others i know love the idea, they just set up some flyscreen mesh to keep the items from touching the sides of the crockpot and boil it clean, pipes, engine parts, blocks less bearings...

I would like to know others thoughts on this not contact method, no rubbing, no snading just boil and clean off with hot soapy water before drying well and re build ????
__________________
- Australian Team Tekno Rc - The Nitro Shop - Nitro X Fuel -
- Proline - Coast 2 Coast Rc - Hearns Hobbies - SMC - Futaba -

- Sam's Youtube Channel - http://www.youtube.com/savagexsam -
savagesam is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
HPI R40 Nitro Car Forum EVOLUTION Nitro On-Road 11979 06-26-2012 07:57 PM
how long can a nitro engine last?? dreaux Nitro Off-Road 12 03-25-2009 10:33 AM
New to electric touring ... TC4 + brushless ... tips ? Tabushi Electric On-Road 9 07-22-2008 08:22 PM
Best way to clean my savage onintks Monster Trucks 10 03-01-2006 06:35 AM
Flushing a Motor TRAJ Onroad Nitro Engine Zone 30 06-09-2005 12:28 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 11:20 PM.


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