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by Gui.dorey
Sun Jun 23, 2019 7:42 pm
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 1849

Re: Square Four MkI - first rides after restoration

This weekend I did a few more rides. I am now happy with my idle settings and can now close the bi starter all the way. Cold start procedure is to open the bi starter all the way, kick 2-3 times with ign off and throttle closed, bi starter in the mid position, ign on and she starts on the 1st or 2nd...
by Gui.dorey
Wed Jun 19, 2019 11:12 am
Forum: Four stroke
Topic: Otto Gaskets
Replies: 7
Views: 584

Re: Otto Gaskets

Hi Simes, I recall reading through a thread here some time ago, that someone had analyzed the Otto gasket and came to the conclusion it was reusable. I'm not sure what the topic was or when it was posted, but likely a search will bring it up. It was thread where someone dissected a gasket to see how...
by Gui.dorey
Wed Jun 19, 2019 9:22 am
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 1849

Re: Square Four MkI - first drives after restoration

How much oil did you have in there Gui? Just filled it up to the level plug. Should be correct, right? Last evening I checked the torque on the head bolts. None needed retightening, but another question arised. Should I ease all the nuts and then re-torque, or is it fine to just check the torque an...
by Gui.dorey
Wed Jun 19, 2019 8:15 am
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 1849

Re: Square Four MkI - first drives after restoration

Hi Gui I bought and fitted aluminium thrower discs (purchased from Peter Kemp), which have proved effective That sounds like a good idea. However, it makes you wonder how did they work as new - did the customers of a brand new and expensive Sq4 just accept that the primary case oil spilled out? if ...
by Gui.dorey
Tue Jun 18, 2019 5:38 am
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 1849

Re: Square Four MkI - first drives after restoration

Thanks Phil, The head bolts at the front under the oil line as well as the four inside the rocker boxes, I can get to. The trouble are the 2 at the back under the manifold. And unfortunately, on the MkI the manifold cannot be removed. Its part of the whole head casting.... I also have a short wire s...
by Gui.dorey
Mon Jun 17, 2019 10:24 pm
Forum: Four stroke
Topic: Square Four MkI - first rides after restoration
Replies: 31
Views: 1849

Square Four MkI - first rides after restoration

Hi Chaps, Decided to start a new thread after the woes with engine, and having rebuilt it for a second time, to report on the first experiences running the Square Four in. Today I went for a longer run to get get the engine up to normal running temperature, set my idle, set the air screw on the carb...
by Gui.dorey
Mon Jun 17, 2019 4:18 pm
Forum: Four stroke
Topic: Shock absorber knocking
Replies: 56
Views: 2819

Re: Shock absorber knocking

simon.holyfield wrote:
30 psi when idling hot?


Yes, idling hot. But I‘m still fiddling with the idle set up and my idle is probably still a bit high. Will have to do a few more runs until I can say for sure where I‘m at. It was just a first run and not very long.
by Gui.dorey
Sun Jun 16, 2019 6:11 pm
Forum: Four stroke
Topic: Square Four MkI restoration complete - almost....
Replies: 72
Views: 3327

Re: Square Four MkI restoration complete - almost....

Hi chaps, To close up this story, I got the new plain bearing from Drags, and had it lined bored together with a mate. In the end it wasn‘t so difficult. It‘s more the setting up the milling machine than anything else. A few late nights putting the engine back together, and this time making sure the...
by Gui.dorey
Sun Jun 16, 2019 5:58 pm
Forum: Four stroke
Topic: Shock absorber knocking
Replies: 56
Views: 2819

Re: Shock absorber knocking

Hi Cam, Got mine back up running again today. On the first start in the garage I also was getting >100 psi oil pressure cold. After a while it had dropped down to below 50psi. After the first run of just about 7km the pressure was settling down to 30. Like everyone says, they probably just need to r...
by Gui.dorey
Sat Jun 08, 2019 2:27 pm
Forum: Four stroke
Topic: So it begins
Replies: 56
Views: 3167

Re: So it begins

Thanks for your info John, will pass that on I am sure the bloke who is doing the job will / should know this. Just to confirm though, are you saying that the white metal bearing is not really necessary and that a plain bronze bush would suffice? I think what John is saying is to make a bronze bush...

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