Glow Engines Discuss RC glow engines

Removing Cooked on Varnish from an engine

Reply
Old 10-27-2012, 05:28 PM
  #1
poorbs
Thread Starter
 
Join Date: Jun 2002
Location: TX
Posts: 132
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Removing Cooked on Varnish from an engine

I have a very nice engine that has some varnish cooked onto the head, and wonder what the best way is to remove it without damaging the fins. A very long time ago, I remember helping a friend clean up one of his engines, and the stuff we used was really foul smelling. Any suggestions? Thanks
poorbs is offline  
Reply With Quote
Old 10-27-2012, 06:15 PM
  #2
jeffie8696
 
jeffie8696's Avatar
 
Join Date: May 2007
Location: Muscatine, IA
Posts: 5,297
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

A product for cleaning dishes called Dawn Power Dissolver
jeffie8696 is offline  
Reply With Quote
Old 10-27-2012, 06:16 PM
  #3
earlwb
 
earlwb's Avatar
 
Join Date: Aug 2009
Location: Grapevine, TX
Posts: 5,988
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

I like to use Dawn Power Dissolver to remove the cooked on varnish from the glow engines. The stuff works pretty good. You can scrub it with a old toothbrush too.

earlwb is offline  
Reply With Quote
Old 10-27-2012, 06:22 PM
  #4
Campgems
 
Join Date: Feb 2006
Location: Arroyo Grande, CA
Posts: 4,465
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

+3

It comes in a blue squeez spray and you may find it with the oven cleaners, or with the dish soap. Not all stores handle it. I think I found mine at the Ace Hardware store.

Wear rubber gloves, it will raise hell with your skin. It may take a couple applications, but it does a very good job of getting the baked on castor off the engine. Follow the instructions on the bottle.

Don
Campgems is offline  
Reply With Quote
Old 10-27-2012, 06:25 PM
  #5
jeffie8696
 
jeffie8696's Avatar
 
Join Date: May 2007
Location: Muscatine, IA
Posts: 5,297
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

If you leave it on too long it tries to melt your engine.
jeffie8696 is offline  
Reply With Quote
Old 10-27-2012, 06:37 PM
  #6
blw
Moderator
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,256
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Trying it on a spot for a few minutes to check for discoloring is a good idea. I know that I've forgotten about it on a Saito for 45 minutes without problems. It's god stuff.
blw is offline  
Reply With Quote
Old 10-27-2012, 09:47 PM
  #7
Ernie Misner
 
Ernie Misner's Avatar
 
Join Date: Jul 2002
Location: Tacoma, WA
Posts: 5,024
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

If you're not in a hurry the ol' crock pot and antifreeze might work better over night?
Ernie Misner is offline  
Reply With Quote
Old 10-28-2012, 01:32 AM
  #8
PWF63
 
Join Date: Oct 2012
Location: Boambee East New South Wales, AUSTRALIA
Posts: 120
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

I've found that using a small jewellers  ultra sonic bath works well using warm water
and a splash of grease remover in the water.
PWF63 is offline  
Reply With Quote
Old 10-28-2012, 01:43 AM
  #9
Old Fart
 
Old Fart's Avatar
 
Join Date: Apr 2008
Location: Perth, AUSTRALIA
Posts: 3,628
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

I like that baked on bronze colour they take
Old Fart is offline  
Reply With Quote
Old 10-28-2012, 04:24 PM
  #10
countilaw
 
countilaw's Avatar
 
Join Date: Jan 2012
Location: Grand Prairie, TX
Posts: 1,254
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine


Quote:
ORIGINAL: Ernie Misner

If you're not in a hurry the ol' crock pot and antifreeze might work better over night?

This method does work, BUT, if you leave it in the pot too long, the Ethylene Glycol will turn the metal grey and any polished parts such as the head will loose that shiny look.


Dawn Power Cleaner will do the same thing if left on too long.

Frank

countilaw is offline  
Reply With Quote
Old 10-28-2012, 05:19 PM
  #11
w8ye
Moderator
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,532
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

I have a beautiful gun metal gray OS 61 four stroke out in the garage. The owner had boiled it in automatic dishwasher soap.
w8ye is offline  
Reply With Quote
Old 10-28-2012, 05:31 PM
  #12
blw
Moderator
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,256
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Those ultra sonic cleaners work great. I got all of the burned castor tar off of a muffler with mine. I used some dishwashing liquid in the water.

Yeah, I also like that burned look too, OF.

I once needed to wash my hands after doing something on my truck. Couldn't think of anything good, so I used that gritty, powdered dishwasher soap. My hands were so dried out that I had to use hand lotion every half hour for weeks.
blw is offline  
Reply With Quote
Old 10-28-2012, 05:41 PM
  #13
afioretti
 
Join Date: Feb 2006
Location: East Aurora, NY
Posts: 311
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Get yourself a cheap crock pot. Fill it with enough Antifreeze to cover your parts in the bottom.Use the older conventional antifreezeNOT 50/50. You may want to make a strainer because the stuff gets incrediblyhot. Put your parts (not rubber) into the mix and let it stew for a couple of days. You will have brand new looking motor parts when done.I have done entire motor blocks this way. The parts come out looking like they are brand new.

CB


Quote:
ORIGINAL: poorbs

I have a very nice engine that has some varnish cooked onto the head, and wonder what the best way is to remove it without damaging the fins. A very long time ago, I remember helping a friend clean up one of his engines, and the stuff we used was really foul smelling. Any suggestions? Thanks
afioretti is offline  
Reply With Quote
Old 10-28-2012, 05:45 PM
  #14
PLANE JIM
 
Join Date: Dec 2002
Location: AT THE AIRPORT
Posts: 1,963
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Hobby King has a real nice Ultrasonic cleaner for less than $25-it works well -cleans without harsh chemicals and does not dry your skin out -easy to store as well and cleans other items as well besides model engines.
PLANE JIM is offline  
Reply With Quote
Old 10-28-2012, 05:48 PM
  #15
blw
Moderator
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,256
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Amazon is a good place to compare and check the reviews.
blw is offline  
Reply With Quote
Old 10-28-2012, 05:54 PM
  #16
KaP2011
 
KaP2011's Avatar
 
Join Date: Apr 2011
Location: Calhoun, GA
Posts: 940
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine


Quote:
ORIGINAL: countilaw


Quote:
ORIGINAL: Ernie Misner

If you're not in a hurry the ol' crock pot and antifreeze might work better over night?

This method does work, BUT, if you leave it in the pot too long, the Ethylene Glycol will turn the metal grey and any polished parts such as the head will loose that shiny look.


Dawn Power Cleaner will do the same thing if left on too long.

Frank

I can vouch for that statement.I've found that 4 to 6 hrs works for most varnish. If you have a small brass wire brush you can speed the process to just a couple of hours for most engines.
KaP2011 is offline  
Reply With Quote
Old 10-28-2012, 06:53 PM
  #17
w8ye
Moderator
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,532
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

You cannot boil the antifreeze and the parts must be completely submerged at all times or you will get graying.
w8ye is offline  
Reply With Quote
Old 10-28-2012, 07:55 PM
  #18
countilaw
 
countilaw's Avatar
 
Join Date: Jan 2012
Location: Grand Prairie, TX
Posts: 1,254
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Harbor Freight carries a sonic cleaner that is cheap but well made. You can order on line or go pick one up and use it that day. Works good on cleaning old jewelry too.

Frank
countilaw is offline  
Reply With Quote
Old 10-28-2012, 08:27 PM
  #19
Ernie Misner
 
Ernie Misner's Avatar
 
Join Date: Jul 2002
Location: Tacoma, WA
Posts: 5,024
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

How does an ultrasonic cleaner work?
Ernie Misner is offline  
Reply With Quote
Old 10-28-2012, 08:32 PM
  #20
oldtyme
 
Join Date: Sep 2003
Location: Bend, OR
Posts: 1,052
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine


Quote:
ORIGINAL: poorbs

I have a very nice engine that has some varnish cooked onto the head, and wonder what the best way is to remove it without damaging the fins. A very long time ago, I remember helping a friend clean up one of his engines, and the stuff we used was really foul smelling. Any suggestions? Thanks
A friend of mine put me onto a product named TAL-STRIP. You can get it in a lot of auto parts stores although it is most used in the aviation industry. It is called a "coating remover". My friend used it to clean up a well used OS91 4-stroke and it looks brand new!
oldtyme is offline  
Reply With Quote
Old 10-28-2012, 11:34 PM
  #21
TimBle
 
Join Date: Apr 2010
Location: Cape Town, SOUTH AFRICA
Posts: 2,744
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine


Quote:
ORIGINAL: w8ye

I have a beautiful gun metal gray OS 61 four stroke out in the garage. The owner had boiled it in automatic dishwasher soap.
+1 or clothing detergent and hot water

TimBle is offline  
Reply With Quote
Old 10-29-2012, 04:55 AM
  #22
raptureboy
 
raptureboy's Avatar
 
Join Date: Dec 2005
Location: Kempton PA
Posts: 2,595
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

I did an old os 90 in the antifreeze in the crock pot and it did turn it all gray, it was completely covered and I did not boil it so I think it depends on the engine. I have a little enya from the 70'sI did and it's fine.
Quote:
ORIGINAL: w8ye

You cannot boil the antifreeze and the parts must be completely submerged at all times or you will get graying.
raptureboy is offline  
Reply With Quote
Old 10-29-2012, 06:05 AM
  #23
Quikturn
 
Quikturn's Avatar
 
Join Date: Jan 2008
Location: West Des Moines, IA
Posts: 739
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

IMO, a slow cook in a crock pot with antifreeze is the best way as mentioned several times before. I also use Dawn Power Disolver but the antifreeze method does a better job. Not sure why some people experience graying of the finish (I don't) but at least you'll have a clean engine to work with. If you want to brighten it up at that point, I've heard a copper cleaner will work.
Quikturn is offline  
Reply With Quote
Old 10-29-2012, 06:19 AM
  #24
BarracudaHockey
Community Moderators
 
BarracudaHockey's Avatar
 
Join Date: Jul 2003
Location: Jacksonville, FL
Posts: 21,748
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

Anti freeze in a crokpot, on LOW
BarracudaHockey is online now  
Reply With Quote
Old 10-29-2012, 06:31 AM
  #25
TimBle
 
Join Date: Apr 2010
Location: Cape Town, SOUTH AFRICA
Posts: 2,744
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Removing Cooked on Varnish from an engine

anitfreeze is not a good idea. Antifreeze contains additives which when allowed to boil off can have serious health effects.
ethylene glycol (One component of antifreeze) vapours can cause respiratory ailments.
TimBle is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 02:51 PM.