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by john.davies
Fri Aug 16, 2019 5:42 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

Hi Paul, I thought you might need to do something when I looked again at the pictures of your 4G project. What size seal did you use for you sloper. I know the external diameter will depend on what size flange hole mine is but internal and thickness would help. As we said the last time we spoke, the...
by john.davies
Fri Aug 16, 2019 12:51 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

Thanks Pete, I will talk to my local friendly machinist to see what he thinks. I want to try and find a solution that entails as little stip down of the engine as possible if I can.
by john.davies
Fri Aug 16, 2019 11:28 am
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

Hi Pete, thanks for you information. Somebody else suggested fitting a modern oil seal so I will look into that as an option. Any info on how you did it would be most helpful. As you are not that far away from me perhaps I could come and see how you did it?
by john.davies
Fri Aug 16, 2019 8:17 am
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

Thank you guys. The flange in Pete's picture is definitely not there on mine. Do you have the dimensions of the flange so I know what I need to get made up and perhaps suggestions on how to fit it ?
by john.davies
Thu Aug 15, 2019 8:05 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

Having spoken to Paul Jameson, he suggests that the hole that the mag pinion is passing through may be larger than normal. There has been a repair of the hole in the past and perhaps it could be the problem. The picture shows the engine when I got her and the hole with the repair is still the same, ...
by john.davies
Thu Aug 15, 2019 4:10 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

Re: My 46 SQ4 is finished - or so I thought

I assume that what is happening is that the timing chain is lifting up oil and dumping it on the magneto pinion and it is then running along the shaft into the magdyno front housing where the magneto and dynamo pinions are splashing it around and it finds it way out between the dynamo and the mag ho...
by john.davies
Thu Aug 15, 2019 3:40 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 488

My 46 SQ4 is finished - or so I thought

After 3 1/2 years of toil and frustration I finished my 48 rigid girder SQ4 a month ago and was ready for test runs and fettling the problems that arose. I have now had a few short rides and fixed a a number of small issues that have shown up but I am stuck on the latest. She has a rather large oil ...
by john.davies
Mon Aug 12, 2019 1:00 pm
Forum: For sale/wanted - Parts
Topic: FOR SALE - Morgo Ariel Square Four Mk1 Rotary Oil Pump
Replies: 2
Views: 509

Re: FOR SALE - Morgo Ariel Square Four Mk1 Rotary Oil Pump

Morgo do 1 pump for the SQ4 that had the plunger pump fitted. When you look at their web site they give you the option to select which timing cover gasket you want supplied, either the 11 hole one for the internal pressure relief or the 12 hole one for the external pressure relief. There is no gaske...
by john.davies
Fri Aug 09, 2019 8:24 am
Forum: For sale/wanted - Parts
Topic: FOR SALE - Morgo Ariel Square Four Mk1 Rotary Oil Pump
Replies: 2
Views: 509

FOR SALE - Morgo Ariel Square Four Mk1 Rotary Oil Pump

I have a brand new and unused Morgo Ariel Square Four Mk1 Rotary Oil Pump for All SQ4 Engines with a Plunger Pump (1937-1953, 4G Iron 1000 + 600, Mk1 1000) that is surplus to requirements. It does not have the timing cover gasket that was supplied with it. £200 plus postage or collection. PM me.
by john.davies
Sat Jul 06, 2019 9:50 am
Forum: Four stroke
Topic: SQ4 Oil Lines
Replies: 11
Views: 982

Re: SQ4 Oil Lines

OK, thank you Simon. Will fit the Drags pipe as you suggest. Cheers

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