Author Topic: What to do with an engine that hasn't turned over in 20 years  (Read 4660 times)

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Offline Romaine

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What to do with an engine that hasn't turned over in 20 years
« on: November 05, 2013, 10:34:44 PM »
Hello all,

Was wondering what I should do before I turn over and try to start a motorcycle (67 hurricane scambler) that has not been kicked over for a long time..

Should I spray wd40 into the spark plug holes? Dump a little 2 cycle oil?

The engine is not stuck (it has been kickedover recently)- I just expect to be kicking it over for quite a few times while diagnosing a starting problem and do not want to tear up the cylinder walls with a dry engine..
Romaine R.I.P. 1916 - 1990

Offline reed

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #1 on: November 06, 2013, 08:06:00 PM »
Romaine,
What i would do is remove the cylinders then you can check the piston and rings and the bores etc.
Then you can clean up and fit the parts you might need before you start the motor and you will know.
You can get all the parts from Richard.
Thanks.
Steve.

Offline old smokey

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #2 on: November 06, 2013, 08:16:15 PM »
This is my technique. Use some 15% nitro model airplane fuel (glow plug style). Put 1teaspoon in each cylinder. This fuel has castor oil in it. I did this for my GTR after 23 years. If it is going to start this will do it.
'67 350 GTR undergoing repairs with a '75 Yamaha TX500 front end

Offline Romaine

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #3 on: November 07, 2013, 11:02:32 PM »
Smokey - where do I find nitro model airplane fuel? Hobby store - I assume?

Reed - I like that idea - although I thought I might get it running first - I believe there was some electrical issues to fix before it runs and then diagnos if it needs a complete tear down..

I just want to be safe before I start kicking it over..
Romaine R.I.P. 1916 - 1990

Offline old smokey

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #4 on: November 08, 2013, 06:51:27 PM »
Romaine - it has been a long time sine I bought the 32 or 48 oz jug of what I use. Probably 20 years ago. Still works like a charm so who knows what the shelf life of the stuff is?
I don't know if a place like Hobby Lobby carries it.
Look for a hobby store that has radio control cars or planes. I think the days of u-control line planes has gone (fly in a circle - you keep turning in a circle about a point).
I've never tried putting a 4 cycle engine under load with this stuff as the only fuel source, but it will bring them back from the dead. ;D
'67 350 GTR undergoing repairs with a '75 Yamaha TX500 front end

Offline Redrust

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #5 on: November 13, 2013, 03:27:55 PM »
From experience if stored properly (sealed & around 65*F) the fuel should last a long time. I wasn't smart in my younger days (even though im still young) and found out it evaporates fast when warm and when cold its like a gel. even old fuel that hasn't been stored in ideal conditions can still pack a punch. Just needs enough pressure and heat to ignite.

 It's like diesel fuel for hobby cars just don't run a lot of it through a system, its meant for engines that run at 30,000 rpm at idle.

Hobby Lobby won't have the fuel because they don't sell the cars. try looking for stores like old smokey said.

Offline CL-100

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Re: What to do with an engine that hasn't turned over in 20 years
« Reply #6 on: November 13, 2013, 04:21:06 PM »
You can find this fuel on just about any of the larger hobby sites.  It's listed as nitro fuel.

 


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