Glow Engines Discuss RC glow engines

What to look for in used 4 stroke....

Reply
Old 10-09-2012, 10:03 PM
  #1
Warbird40
Thread Starter
 
Join Date: Sep 2012
Location: Moreno Valley, CA
Posts: 357
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default What to look for in used 4 stroke....

I am being offered a 48" Ultimate Biplane with a 4 stroke and would like to know what to look for when it comes to the engine. Is there a way of knowing if the engine is good without starting it? Any tips?
Thanks
Warbird40 is offline  
Reply With Quote
Old 10-10-2012, 12:50 AM
  #2
rosnik
 
Join Date: Oct 2002
Location: 1000MIGLIA CITY, ITALY
Posts: 78
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: What to look for in used 4 stroke....

It's easy !
Buy one new boxed OS FS .
Get the right fuel and enjoy flying .
rosnik is online now  
Reply With Quote
Old 10-10-2012, 01:36 AM
  #3
controlliner
 
controlliner's Avatar
 
Join Date: Mar 2009
Location: Ontario, Canada
Posts: 1,187
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: What to look for in used 4 stroke....

See it run. There is no replacement for seeing it run at all throttle range. You can't go by compression, if the compression is weak it may be as simple as valve adjustment to fix. If you're not mechanically inclined, it may be a "pandora's box", rusted out bearings worn ring, worn valve seats.
controlliner is offline  
Reply With Quote
Old 10-10-2012, 04:48 AM
  #4
ronwc
 
ronwc's Avatar
 
Join Date: Jan 2002
Location: LARGO, FL
Posts: 472
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: What to look for in used 4 stroke....

I have had very good luck with the 1000's of used engines i've bought. Unless they have been horribly abused, most are very durable. Two strokes are a little easier, good compression and smooth bearings general mean a good engine. Four strokes turn over differently, and as mentioned earlier the valves may need adjusting and or lifters stuck from sitting - both are an easy fix. Of course, some engines are just better than others from the start.

Attached Images
 
ronwc is offline  
Reply With Quote
Old 10-10-2012, 05:05 AM
  #5
Gizmo-RCU
 
Join Date: Sep 2002
Location: Athol, ID
Posts: 2,110
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: What to look for in used 4 stroke....

Clean and smooth when turning over are a good start.
Gizmo-RCU 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 06:37 PM.