Quebecguy
Gold Member

This photo of my Square Four was taken in my back yard about eight years ago after I had finally completed the rebuild. Since then I've put on only a few hundred miles each year but in many ways the bike gives me much pleasure when I ride it. It is the flagship of my little Ariel fleet - I have a couple of singles too. The four cylinder, one thousand cc motor of the Sq4 has a false reputation of over heating on the rear cylinders. It won't overheat but it will seize if the oil passageways in the crankshafts (there are two crankshafts) are not cleaned out every 15,000 miles or so. I have added a proper cartridge type oil filter to greatly extend the clean-out interval.
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