1980? spitfire motor help

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farmboy186
Posts: 76
Joined: Tue Jan 15, 2013 7:52 am
Location: Canada

1980? spitfire motor help

Post by farmboy186 »

posted my question in the wrong area, i have a 1980 spitfire im wondering on the motor on what i should do, been told the cylinders are screwed but theres no scoring? what should i do?
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1974 John Deere 300 x2
1974 John Deere JDX4 Special x1
1975-77 John Deere 300 x4
1976 John Deere Cyclone x3
1978 John Deere Cyclone x1
1980 john Deere Spitfire
John Deere Sportfire x2
John Deere Trailfire x2
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smitfire
Posts: 1411
Joined: Wed Sep 19, 2007 12:00 am
Real Name: Dustin Smit
Location: hull Iowa

Re: 1980? spitfire motor help

Post by smitfire »

Run a flex hone through them.
Many new and used parts available, I ship anywhere. Thanks everyone.
farmboy186
Posts: 76
Joined: Tue Jan 15, 2013 7:52 am
Location: Canada

Re: 1980? spitfire motor help

Post by farmboy186 »

was told there chrome plated so to not hone them
1974 John Deere 300 x2
1974 John Deere JDX4 Special x1
1975-77 John Deere 300 x4
1976 John Deere Cyclone x3
1978 John Deere Cyclone x1
1980 john Deere Spitfire
John Deere Sportfire x2
John Deere Trailfire x2
User avatar
smitfire
Posts: 1411
Joined: Wed Sep 19, 2007 12:00 am
Real Name: Dustin Smit
Location: hull Iowa

Re: 1980? spitfire motor help

Post by smitfire »

http://www.ebay.com/itm/3-1-2-Nikasil-C ... ls&vxp=mtr

Here is an example. I'm not sure of the size you need.
Many new and used parts available, I ship anywhere. Thanks everyone.
farmboy186
Posts: 76
Joined: Tue Jan 15, 2013 7:52 am
Location: Canada

Re: 1980? spitfire motor help

Post by farmboy186 »

thanks, didnt know they sold those, i buy one and flex hone it then. or i was gunna look for NOS jugs
1974 John Deere 300 x2
1974 John Deere JDX4 Special x1
1975-77 John Deere 300 x4
1976 John Deere Cyclone x3
1978 John Deere Cyclone x1
1980 john Deere Spitfire
John Deere Sportfire x2
John Deere Trailfire x2
User avatar
smitfire
Posts: 1411
Joined: Wed Sep 19, 2007 12:00 am
Real Name: Dustin Smit
Location: hull Iowa

Re: 1980? spitfire motor help

Post by smitfire »

These cylinders are hard to find.
Many new and used parts available, I ship anywhere. Thanks everyone.
mn.deereguy
Posts: 136
Joined: Wed Jan 01, 2014 12:54 pm
Real Name: Andy Skarphol
Location: mankato mn.

Re: 1980? spitfire motor help

Post by mn.deereguy »

if rust is not that thick oil and grey scotch bright pad or in parts washer with grey scotch bright prolly would do it. Why did someone tell you they were junk cause they were Surface rusted? You might have a hard time finding cyl for the kawi smifire might have some I bought some from him last year.
74-jdx4 special my first jd i got when i was 10
2-76 cyclones
1-77 cyclone
2-78 cross country
1-78 440 liquifire
1-79 spitfire
2-79 trailfires
3-80 spitfires
4-80 liquifires
83 trailfire lx
2-83 liquifires
robtan88
Posts: 394
Joined: Fri Jan 25, 2008 1:00 am

Re: 1980? spitfire motor help

Post by robtan88 »

Are you sure those don,t have cast iron liners installed in those? Chrome lining doesn,t rust up like that. You will want to know this if you re-ring that cylinder...Rob.
mn.deereguy
Posts: 136
Joined: Wed Jan 01, 2014 12:54 pm
Real Name: Andy Skarphol
Location: mankato mn.

Re: 1980? spitfire motor help

Post by mn.deereguy »

don't look like sleeved to me unless someone did a really nice job matching the ports.
74-jdx4 special my first jd i got when i was 10
2-76 cyclones
1-77 cyclone
2-78 cross country
1-78 440 liquifire
1-79 spitfire
2-79 trailfires
3-80 spitfires
4-80 liquifires
83 trailfire lx
2-83 liquifires
farmboy186
Posts: 76
Joined: Tue Jan 15, 2013 7:52 am
Location: Canada

Re: 1980? spitfire motor help

Post by farmboy186 »

i was told it was junk cause the cylinder looked junky and im not sure if its sleeved or not i dont know anything about these motors
1974 John Deere 300 x2
1974 John Deere JDX4 Special x1
1975-77 John Deere 300 x4
1976 John Deere Cyclone x3
1978 John Deere Cyclone x1
1980 john Deere Spitfire
John Deere Sportfire x2
John Deere Trailfire x2
JDT
Posts: 5561
Joined: Wed Nov 21, 2007 1:00 am
Real Name: Todd
Location: Milbank South Dakota

Re: 1980? spitfire motor help

Post by JDT »

Judging from the pictures posted in another topic you have lost a lot of metal from the piston.

Some of this slag may have been blown out the exhaust and coated the manifold but some may have found its way into your crankcase.

More than likely the cause of this meltdown was or is a bad seal.

If this was my engine it would get completely torn down and toughly cleaned and inspected.

Just repairing the top section may be as short lived fix.

Your jugs look usable. Just clean them up as suggested. The head replaced, new seals and gaskets, new pistons.
Todd Schrupp

Milbank SD
klonteig
Posts: 43
Joined: Sat Oct 20, 2012 10:26 pm
Real Name: Jordan Klonteig
Location: Chatham, Ontario

Re: 1980? spitfire motor help

Post by klonteig »

Asking as someone who has never done this work before, wouldn't that hone damage the edges of the ports, or round them over? If yes, does it even matter? I've only SEEN (never used) the types of hones with the flat strips.
Jordan
-----------------
1-1/2 JD300E's
-----------------
JDT
Posts: 5561
Joined: Wed Nov 21, 2007 1:00 am
Real Name: Todd
Location: Milbank South Dakota

Re: 1980? spitfire motor help

Post by JDT »

From what I can see in your photos there is some rust and some debris in the sleeves.
That is minor but you should clean them up.

A little work with some sandpaper should be enough.
Clean throughly when dome and spray them with WD-40 or wipe them with oil as they will rust back fast.

These are sleeved cylinders not plated.

Honing can be done but lightly.

I don't have a ball hone, I use a flat three bladed one... only when really needed.
Todd Schrupp

Milbank SD
farmboy186
Posts: 76
Joined: Tue Jan 15, 2013 7:52 am
Location: Canada

Re: 1980? spitfire motor help

Post by farmboy186 »

so the cylinders for the spitfire are sleeved? its the Kawasaki fire-burst motor, and if i hone it out n get new cylinders that will be good to run it? I'm tearing the bottom end apart as well to replace a bearing.
1974 John Deere 300 x2
1974 John Deere JDX4 Special x1
1975-77 John Deere 300 x4
1976 John Deere Cyclone x3
1978 John Deere Cyclone x1
1980 john Deere Spitfire
John Deere Sportfire x2
John Deere Trailfire x2
JDT
Posts: 5561
Joined: Wed Nov 21, 2007 1:00 am
Real Name: Todd
Location: Milbank South Dakota

Re: 1980? spitfire motor help

Post by JDT »

You can see in your pictures that there is a sleeve.

I do not see the need to replace cylinders from what I see in your pictures.
Todd Schrupp

Milbank SD
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