Our G2 finally sorted

Information relating to the Matchless G2 or AJS Model 14 250cc Lightweight
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Our G2 finally sorted

Postby Richard Hyatt » Sun May 12, 2019 6:44 am

For all of you who have kindly provided thoughts , ideas and technical tips our thanks indeed.

It's running nicely and seems to be working well , a couple of teething hiccups to sort, but that is to be expected.

I'm amazed at how well it starts and what a lovely sound/bark from the exhaust.

Brakes are bedding in and head gasket to be retightened sometime soon.

Perhaps some reverse advice for your 12 volt conversions , I used a Chinese £2.99 free post from China regulator and rectifier. What a doddle and nice stable charge now.

Anyway , to everyone who contributed, thanks.

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Re: Our G2 finally sorted

Postby cbranni » Sun May 12, 2019 7:36 am

That is good news Richard.

Colin
only dead fish go with the flow

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Re: Our G2 finally sorted

Postby shifter » Sun May 12, 2019 12:31 pm

That's champion another 250 saved
?

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Re: Our G2 finally sorted

Postby clanger9 » Sun May 12, 2019 5:40 pm

Well done, Richard! You get a medal for perseverance. Glad it's finally happy & sorted :D

PS: what was the issue with the oil return? Did you find out what was causing the restriction?
1966 AJS Model 14 250 CSR "cafe racer"
1993 Ducati 750SS

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Re: Our G2 finally sorted

Postby Richard Hyatt » Sun May 12, 2019 5:51 pm

As you may know we've rebuilt the entire lubrication system, pump , pin etc.
The culprit on the return side , causing wet sumping , breathing etc was the short oil filter.
We'd washed it a million times and blown air through it , but without it there was a lovely dry sump and good scavenging.
With it , even with correct "top hat" buttons at either end , it slowed the return up drastically.
So we've pulled the felt out for the moment and just relying on the perforated tube to coarsely filter any bits.
The oil will be changed regularly anyway and we use sae 50
Cheers

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Re: Our G2 finally sorted

Postby ajscomboman » Sun May 12, 2019 6:27 pm

Richard Hyatt wrote:As you may know we've rebuilt the entire lubrication system, pump , pin etc.
The culprit on the return side , causing wet sumping , breathing etc was the short oil filter.
We'd washed it a million times and blown air through it , but without it there was a lovely dry sump and good scavenging.
With it , even with correct "top hat" buttons at either end , it slowed the return up drastically.
So we've pulled the felt out for the moment and just relying on the perforated tube to coarsely filter any bits.
The oil will be changed regularly anyway and we use sae 50
Cheers


Top hat buttons? Shouldn't that be button as there is only one, the other end being a shouldered cup washer.

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Re: Our G2 finally sorted

Postby Richard Hyatt » Sun May 12, 2019 8:37 pm

Sorry my description wasn't too clever
There is 1 cup at the bottom with a hole in the centre allowing the oil up into the core of the filter and a cup with the spring and the scew in plug.

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Re: Our G2 finally sorted

Postby ajscomboman » Mon May 13, 2019 5:58 am

Richard Hyatt wrote:Sorry my description wasn't too clever
There is 1 cup at the bottom with a hole in the centre allowing the oil up into the core of the filter and a cup with the spring and the scew in plug.


Spot on.

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Re: Our G2 finally sorted

Postby Mick D » Mon May 13, 2019 6:18 am

Richard Hyatt wrote:With it , even with correct "top hat" buttons at either end , it slowed the return up drastically.


Hi

Do you have any photos of the filter assembly before removal of the felt? Is this another case of a pattern filter being unfit for purpose or just symptomatic of the oil pump's marginal performance?

Regards Mick

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Re: Our G2 finally sorted

Postby Martin.S » Mon May 13, 2019 7:35 am

I see the club spares now have listed the 350 long fine mesh filter - I presume this is not as good as the felt but better than none at all

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