Notices
Engine Conversions Discuss all aspects of engine conversions in this forum

Walbro WT-499 carburetor question..

Old 11-04-2012, 07:03 PM
  #1  
1QwkSport2.5r
Thread Starter
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 9,942
Received 15 Likes on 15 Posts
Default Walbro WT-499 carburetor question..

I'm in the market to find one of these carburetors for a 30cc Homelite I'm looking to convert to glow ignition and run methanol fuel in it. What kinds of engines did this carburetor come factory installed on? I've asked around at some of the local small engine shops and I got a lot of head scratching when I asked about a 499 carb. Are they hard to find/rare or is my parts guy just lost?

I've got a 16cc and 24cc engine that I would like to do some experimenting with as well, Though I know the 16cc is a pig of an engine for its weight, I want to see what it will turn before I commission it to the shelf permanently.

(previously, this engine was built to run a homemade gas-powered blender. Needless to say, it did not have the snort needed to crush ice very well, at least on gasoline and magneto ignition.
Old 11-04-2012, 08:33 PM
  #2  
av8tor1977
My Feedback: (6)
 
av8tor1977's Avatar
 
Join Date: May 2003
Location: Tucson, AZ
Posts: 7,213
Likes: 0
Received 1 Like on 1 Post
Default RE: Walbro WT-499 carburetor question..

To my knowledge, the WT-499 carb was made for Zenoah 23/26 engines running alcohol for racing. That might give you a line on finding one. Try e-bay.

AV8TOR
Old 11-04-2012, 11:38 PM
  #3  
Tidnab
My Feedback: (51)
 
Tidnab's Avatar
 
Join Date: Mar 2005
Location: Clearfield, PA
Posts: 1,158
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Walbro WT-499 carburetor question..

Dave's Motors has them http://www.davesmotors.com/s.nl/c.88...t.A/id.4131/.f
Old 11-05-2012, 08:45 AM
  #4  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,575
Received 6 Likes on 6 Posts
Default RE: Walbro WT-499 carburetor question..

I have a WT-499 on a 30cc Homelite and it runs very well on gasoline
Old 11-05-2012, 09:00 AM
  #5  
flyinwalenda
My Feedback: (5)
 
flyinwalenda's Avatar
 
Join Date: Oct 2009
Location: Northeast, PA
Posts: 3,975
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Walbro WT-499 carburetor question..

Rebuild kit is a K20WAT just in case you need it.
Old 11-05-2012, 09:15 AM
  #6  
1QwkSport2.5r
Thread Starter
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 9,942
Received 15 Likes on 15 Posts
Default RE: Walbro WT-499 carburetor question..

Thanks guys. I'll order one up. A 30cc homelite on methanol should run pretty well.
Old 11-05-2012, 09:37 AM
  #7  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,575
Received 6 Likes on 6 Posts
Default RE: Walbro WT-499 carburetor question..

Keep in mind that to run a Homelite on alcohol, it will rust inside just like a glow engine.

I've worked on Zenoah G-23 glow versions to replace rusty bearings. I've never seen rust inside a engine run on gasoline
Old 11-05-2012, 09:53 AM
  #8  
av8tor1977
My Feedback: (6)
 
av8tor1977's Avatar
 
Join Date: May 2003
Location: Tucson, AZ
Posts: 7,213
Likes: 0
Received 1 Like on 1 Post
Default RE: Walbro WT-499 carburetor question..

Yep, you need to run it out dry, and then oil it well. Or you could run it on gas/oil after you're done flying, and leave the gas/oil in it.

AV8TOR
Old 11-05-2012, 09:56 AM
  #9  
flyinwalenda
My Feedback: (5)
 
flyinwalenda's Avatar
 
Join Date: Oct 2009
Location: Northeast, PA
Posts: 3,975
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Walbro WT-499 carburetor question..

True about it being a water magnet. I oil up my gasoline engines just like the glow engines.  Not a bad habit to get into
Old 11-05-2012, 11:34 AM
  #10  
av8tor1977
My Feedback: (6)
 
av8tor1977's Avatar
 
Join Date: May 2003
Location: Tucson, AZ
Posts: 7,213
Likes: 0
Received 1 Like on 1 Post
Default RE: Walbro WT-499 carburetor question..

It certainly can't hurt. I've found the very best after run oil to be automatic transmission fluid myself. If you are ever around an old junkyard, look at the machinery laying around. Engine parts will often lose their coating of oil and rust, but automatic transmissions and their innards hardly ever rust with their coating of ATF on them. Marvel Mystery oil for air tools is good too. I have an old Fox .78 that I have had for 30 years. It runs perfect and has never been rebuilt, but I always run the engine dry and then oil it with ATF.

AV8TOR
Old 11-05-2012, 05:13 PM
  #11  
1QwkSport2.5r
Thread Starter
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 9,942
Received 15 Likes on 15 Posts
Default RE: Walbro WT-499 carburetor question..

I'm no stranger to glow fuel and glow engines. My ARO of choice is Dexron III with 5% seafoam motor treatment added to it. I would be using a good dose of castor in the fuel as well. Not worried about rust in the least.

Thanks for the heads up though. Nobody likes rusty bearings or crankshafts.

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.