Oil pipes, routing and whats left...

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Oil pipes, routing and whats left...

Postby cfaber » Wed Mar 27, 2019 5:05 pm

Hi folks,

I'm hoping someone can help me identify what's missing here as well as correct fitting and routing for the oiling system. Here is what I have:

Image

What I think I have:

O Union to return/feed? What does this connect to?
X Head feed pipe (other end is on the head with rubber pipe)
X Unknown (Oil return?)
X Unknown (Oil feed?)
X Oil tank breather pipe? (where does this attach?)
X Unknown (Check valve, union to copper pipe) this fits on the drive side, where does this route?

The unmarked pipe appears to be another feed/return pipe with some kind of BA thread, but it's too small to actually fit the crank case ports.

Image
Which does the O union connect into? Which is feed, which is return?

I'm clearly missing stuff here and I thought I had finally obtained all the needed parts, but sadly I'm still along way off from being able to run this thing :cry:

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Re: Oil pipes, routing and whats left...

Postby cbranni » Wed Mar 27, 2019 6:19 pm

I took some photos when I pulled my bike apart, I hope they are of some use.
These are the tank connections.
[url]Image[/url]
Oil connection engine side
[url]Image[/url]
Another view of engine side connections
[url]Image[/url]
View of flow and return pipes oil tank.
[url]Image[/url]
Last edited by cbranni on Fri Mar 29, 2019 8:44 am, edited 2 times in total.
only dead fish go with the flow

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Re: Oil pipes, routing and whats left...

Postby Rob Harknett » Wed Mar 27, 2019 6:38 pm

It may help to know the year and model of your bike. heres some pictures.
Ashampoo_Snap_27 March 2019_18h32m42s_003_.jpg

Ashampoo_Snap_27 March 2019_18h32m17s_002_.jpg
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Re: Oil pipes, routing and whats left...

Postby Rob Harknett » Wed Mar 27, 2019 6:39 pm

Ashampoo_Snap_27 March 2019_18h34m05s_005_.jpg

Another pic.
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Re: Oil pipes, routing and whats left...

Postby cfaber » Thu Mar 28, 2019 12:47 am

Thanks guys,

How about the other side? I've seen quiet a few pictures of the pump side, but what about the drive side? Where does that pipe route to?

ALso this is to a '54 18S

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Re: Oil pipes, routing and whats left...

Postby cfaber » Thu Mar 28, 2019 3:29 am


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Re: Oil pipes, routing and whats left...

Postby Mick D » Thu Mar 28, 2019 7:59 am

cfaber wrote:what about the drive side? Where does that pipe route to?


Here's the crank case breather on a 61 G3, (it's pointing up for convenience during restoration - it's normal position is pointing down).

Crank Case Breather.png


Regards Mick
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Re: Oil pipes, routing and whats left...

Postby cfaber » Thu Mar 28, 2019 3:15 pm

Mick D wrote:
cfaber wrote:what about the drive side? Where does that pipe route to?


Here's the crank case breather on a 61 G3, (it's pointing up for convenience during restoration - it's normal position is pointing down).

Crank Case Breather.png


Regards Mick


Thanks so much Mick! I think this is the first and only time I've seen a picture of the vent pipe!

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Re: Oil pipes, routing and whats left...

Postby cfaber » Thu Mar 28, 2019 3:16 pm

How about the what I think is the oil tank breather pipe? Does anyone know where it should attach and how?

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Re: Oil pipes, routing and whats left...

Postby dave16mct » Thu Mar 28, 2019 3:58 pm

Pag 119 of the Pitmans Book of the AJS. Shows the metal pipe fixed to the engine plate. It points towards the rear chain. The rubber tube connects it to the oiltank breather.
Dave.

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