To rebuild a 450 engine.

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Jordan
Posts: 1386
Joined: Fri Dec 24, 2010 11:29 am

Re: To rebuild a 450 engine.

Postby Jordan » Mon Jul 20, 2020 4:43 am

I haven't moved. :)
I'm halfway between Sydney and Canberra, near Bundanoon.

graeme
Posts: 942
Joined: Sun Mar 25, 2012 12:00 am
Location: Tasmania Australia

Re: To rebuild a 450 engine.

Postby graeme » Mon Jul 20, 2020 6:53 am

No not you Jordan,,, Ross with the 450 engine.

If he is in SE Qld or northern NSW I know a fellow that does good Ducati work for a good price.

Graeme

Rossguzzi
Posts: 46
Joined: Wed Nov 20, 2019 12:29 pm

Re: To rebuild a 450 engine.

Postby Rossguzzi » Mon Jul 20, 2020 9:30 am

Perth .
6 Ducati`s, 6 Guzzi`s, 2 Aprilia`s, 4 Morini`s, 2 Montessa`s and a bunch of other stuff

double diamond
Posts: 555
Joined: Thu Apr 28, 2011 1:20 am

Re: To rebuild a 450 engine.

Postby double diamond » Tue Jul 21, 2020 3:18 pm

If the wire/lead tag is still intact on one of the sump screws then the cases have never been opened.
If you have access to an air impact gun, it’s pretty easy to disassemble the engine. Following the proper disassembly procedure will save you a lot of grief. If you do proceed yourself, start on this forum before disassembling anything. There are a number of procedures that make disassembly easier that do not appear in any manual.
You can disassemble the cylinder head yourself if you’re prepared to improvise a few tools. Expect to send the head out to replace valve guides and cut the seats. What else you can expect to replace depends on how well the engine was maintained while it was running (especially oil changes) and whether it has suffered corrosion internally due to sitting unused for so long.
I would completely disassemble before any cleaning/blasting.
To reassemble or if any cam drive shimming is necessary, some special tools are necessary and/or will avoid a lot of frustration. Also, fabricate yourself an engine stand.

Rossguzzi
Posts: 46
Joined: Wed Nov 20, 2019 12:29 pm

Re: To rebuild a 450 engine.

Postby Rossguzzi » Tue Jul 21, 2020 3:54 pm

Thanks DD, its info like this I am looking for.
6 Ducati`s, 6 Guzzi`s, 2 Aprilia`s, 4 Morini`s, 2 Montessa`s and a bunch of other stuff

Rossguzzi
Posts: 46
Joined: Wed Nov 20, 2019 12:29 pm

Re: To rebuild a 450 engine.

Postby Rossguzzi » Wed Jul 22, 2020 4:55 am

I looked for the wire/lead tag but its not there. I get the feeling it has been pulled apart before. It was a 'not quite running' project when I first bought it back in 85.
6 Ducati`s, 6 Guzzi`s, 2 Aprilia`s, 4 Morini`s, 2 Montessa`s and a bunch of other stuff

graeme
Posts: 942
Joined: Sun Mar 25, 2012 12:00 am
Location: Tasmania Australia

Re: To rebuild a 450 engine.

Postby graeme » Wed Jul 22, 2020 9:51 am

Those tags fall off by themselves, my SS tag did.

Duccout
Posts: 1287
Joined: Wed Feb 05, 2020 1:20 pm
Location: Essex UK

Re: To rebuild a 450 engine.

Postby Duccout » Wed Jul 22, 2020 10:16 am

Ditto.

blethermaskite
Posts: 480
Joined: Thu Mar 01, 2018 1:06 am
Location: northern ireland

Re: To rebuild a 450 engine.

Postby blethermaskite » Wed Jul 22, 2020 10:52 am

Not sure about this seal tag thing on singles, I have bought (many years ago) two new widecase singles and neither has a tag on them?
Cheers,
George

Duccout
Posts: 1287
Joined: Wed Feb 05, 2020 1:20 pm
Location: Essex UK

Re: To rebuild a 450 engine.

Postby Duccout » Wed Jul 22, 2020 11:33 am

It probably depends on who was working on the day that the engine was built.


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