OK .074 engine
07-05-2006, 08:42 PM
#1
Thread Starter
My Feedback: (8)
Join Date: Aug 2005
Location: , MI
Posts: 96
Likes: 0
Received 0 Likes
on
0 Posts
OK .074 engine
I have recently been given an old OK .074 engine. The crank still spins but seems a little sticky. I know nothing about this engine and would like some help with it. Mainly, how can I fully restore it, is it glow, gas or diesel, is there any parts from them any more and could a manual be found for it. Any information on this engine would be greatly appreciated. Thanks, Chris
07-05-2006, 09:10 PM
#2
Senior Member
RE: OK .074 engine
Lubricate it liberally.
It uses a short reach glow plug.
A 7x4 prop is probably the correct size... haven't seen one of those in 40 some years.
There's not much that can go wrong with it.
It uses a short reach glow plug.
A 7x4 prop is probably the correct size... haven't seen one of those in 40 some years.
There's not much that can go wrong with it.
07-06-2006, 10:01 AM
#3
Senior Member
My Feedback: (1)
RE: OK .074 engine
There is some old discussion at the MECOA forum on these engines. The proper fuel is not available, and I see new original glow heads at model swap meets for these at about $2 each. The fuel will have to be blended at one gallon Min. They heartily say, do not use modern fuels, for they have wrong and improper lubricants. Same problem with K&B Fury series engines.
My biggest complaint about OK engines is that they run fine at home. But then do a little traveling, and seems they will not start up in the unfamiliar territory. Perhaps others have had better luck. The whole line used to grace the back of the issues of American Modeler for many years.
Wm.
My biggest complaint about OK engines is that they run fine at home. But then do a little traveling, and seems they will not start up in the unfamiliar territory. Perhaps others have had better luck. The whole line used to grace the back of the issues of American Modeler for many years.
Wm.
