Search found 15 matches

by Mat
Sun Mar 13, 2016 4:06 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Charging coil wires
Replies: 1
Views: 4683

Re: Charging coil wires

Well, I went with the round rubber 2 wire extension cord, we will see how it holds up.
by Mat
Thu Mar 03, 2016 5:32 am
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Charging coil wires
Replies: 1
Views: 4683

Charging coil wires

I have to replace the wires from the charging coil on my Monza 250 due to both the wire and housing being badly deteriorated. I have gotten to the coil and removed it, it is the two wire model. My question is what I should replace it with. Has anyone done this? The original looks like a black rubber...
by Mat
Tue Mar 03, 2015 7:35 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Carb spitting up gas
Replies: 1
Views: 5207

Re: Carb spitting up gas

Have you tried adjusting the carb. ? , if you know the timing is on and engine is fresh there is not much else I could guess.
by Mat
Sat Jan 25, 2014 2:08 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Piston hitting cylinder head
Replies: 4
Views: 6194

Re: Piston hitting cylinder head

Thanks Ducadini, sounds like good advice. I got the oil dowel out. Now I am working on getting the valves out to see what is up there. If I am lucky they can be just lapped in but I will see. Hope to use the cylinder/piston again. Piston looks OK with just some bit of scuffing which I hope will clea...
by Mat
Wed Jan 22, 2014 3:08 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Piston hitting cylinder head
Replies: 4
Views: 6194

Re: Piston hitting cylinder head

Thanks, a thicker base gasket sounds like an easy fix. I thought about lapping in cyl/head but the nipple sticking up from the cylinder for oil would be in the way, does this come out?
by Mat
Tue Jan 21, 2014 3:49 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Piston hitting cylinder head
Replies: 4
Views: 6194

Piston hitting cylinder head

After finally getting the head off of my 250 Monza I notice it looks like the piston has been kissing the cylinder head chamber. Head surrounding surface as well as the top of the piston has a pitted look, possible from carbon getting pressed between the two, I can also see a bit of an imprint of th...
by Mat
Tue Jan 21, 2014 3:32 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Re: Pulling the Head

Finally got the head off and it appears it was just that the collar that holds the bevel shaft together was a tight fit. I ended up partially suspending the engine by using some rope attached to the intake and exhaust flanges and up to the ceiling rafters. I threaded a solid bolt into the oil return...
by Mat
Wed Jan 08, 2014 6:14 am
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Re: Pulling the Head

Still no-go on getting this head off. The bevel shaft must be stuck in the collar, I read in the manual where the collars come in slightly tighter internal diameter if there is a problem with wear on the shaft itself. Maybe someone used one of these undersized collars and somehow forced the shaft to...
by Mat
Fri Dec 27, 2013 5:35 am
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: timing dots
Replies: 2
Views: 5552

Re: timing dots (pic's)

I took some pictures of how the timing dots line up in my engine to give you an idea of how they look. Seems to be a bit off to me.

http://i1273.photobucket.com/albums/y41 ... 1c1dee.jpg
http://i1273.photobucket.com/albums/y41 ... 58b897.jpg
by Mat
Wed Dec 25, 2013 5:20 am
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Re: Pulling the Head

Thanks for the input Joe, I figured that there would be an o-ring sealing the shaft tube, I can see the tube move maybe one millimeter or so at it's separation point. I can see that the head is loose from the barrel and also that the barrel is loose so it is not stuck there. I am going to have to ge...
by Mat
Sat Dec 21, 2013 2:57 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Re: Pulling the Head (am I missing something?)

Well, I pulled the side cover, top bevel cover and lined up the dots. I loosened and removed the 4 head bolts. Carb and exhaust are off of course and I even pulled the oil lines( not sure why that needed to be done). Head is loose but doesn't want to come off. Looks to me to be held up by bevel shaf...
by Mat
Thu Dec 19, 2013 4:26 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: timing dots
Replies: 2
Views: 5552

timing dots

In preparation for pulling the head on my Monza 250 I removed the timing cover and bevel cover on head. Turned engine several times over and I get the bevel sets to line up and many more times over and I get all of the dots to line up but while dots on the crank to pump drive and pump drive to point...
by Mat
Tue Dec 10, 2013 12:38 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Re: Pulling the Head

Thanks all for your input. I will make sure to align up the bevel gear markings before pulling head. I have some more mundane stuff to get out of the way before I start this project but thought I would ask some questions first. I will go ahead and pull the engine from the frame so I can work on it o...
by Mat
Fri Dec 06, 2013 2:38 pm
Forum: Single Cylinder Bevel Drive Engines > 250, 350 & 450
Topic: Pulling the Head
Replies: 9
Views: 9918

Pulling the Head

Looking for any advice before I pull the head on my 1964 250 Monza. I got this bike not long ago and knew it would need some work. Compression was low about 40psi maybe. I adjusted the valve clearance and did a simple leak down test and find leakage back thru the intake valve. Looking thru the spark...
by Mat
Sun Dec 01, 2013 9:02 am
Forum: Introduce Yourself
Topic: New Guy
Replies: 1
Views: 1079

New Guy

Hi, my name is Mat, I'm new to Ducati's but not to motorcycles or engines old or new. I look forward to something a bit different. I just bought a 1964 Ducati 250 Monza which I hope to get back into running order. I will probable have some questions and I can see I will be buying some new tools. Tha...

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