<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body><div class="auto-created-dir-div" dir="auto" style="unicode-bidi: embed;"><style>p{margin:0}</style>Michael,<div><p>I'll never forget when in much younger days I was allowed to re-build a 1275 Mini engine for my Rolls Royce apprenticed friend to power one of the Mini pick-ups he used for his business. The engine had been for a re-bore, crank grind, balance etc and I had done a bit of gas flow work on the head. Not a super hot racer but a more efficient mini delivery truck. It seemed to re-build fine but when it came to firing it up, it ran, but the oil pressure would not rise. My friend cursed me up hill and down dale saying amongst other things, if you want a job doing, do it yourself. I felt awful and didn't see him for a couple of days but, when I did, I raised the engine problem to see what I had done wrong. He couldn't get oil pressure up either (yeah!) and when stripped down and checked over yet again, it was found each of the bearing surfaces on the crank was tapered<span style="display: inline !important;">! Even now, now that I've slept a few times since then, I still cannot work out how the grinding on the crank could have been done like that. The firm that did it had one of the best reputations in that part of Northern England in those days and should have realised if their machinery wasn't correctly set</span><span style="display: inline !important;">. My friend forgave me and let me play with more of his motors so I knew I was truly forgiven, but I like to think that made me a slightly better (but pedantic) spanner man. When you strip your engine down again remember - you did it right - check the work others did. Others who perhaps don't have the love of your engine that you do!</span></p><p><span style="display: inline !important;">Keep the faith!</span></p><p><span style="display: inline !important;">Guy R Day</span></p><br><blockquote style="margin: 0 auto; padding: 0 2em; border-left:2px solid #00ADE5; white-space: pre-wrap "><br><br>------ Original Message ------<br>From: "Michael MacLean via Spridgets" <spridgets@autox.team.net><br>To: "Spridgets" <spridgets@autox.team.net><br>Sent: Thursday, 4 May, 23 At 10:14<br>Subject: [Spridgets] 1275 Rod Knock Update<br><br><div dir="auto">Took compression readings of the 1275 engine in my Bugeye as the start of the rod knock diagnosis. Not good. No 1 was 110 psi, No 2 - 90 psi, No 3 - 80 psi and No 4 was 110 psi. Which means none of them are up to snuff. Also found the spark plug wire for number 3 cylinder had fallen out if the distributor. I plugged it back in and started the engine. It idled smoother, but under acceleration the knock was still there and definitely coming from the block. All this with only 3 - 4 thousand miles since the swap from 948 to 1275. Next will be the oil in the cylinders and retake the compression test to see if the low compression is due to the valves. Might as well figure a head rebuild too. $$$$$$$$$$$$<div dir="auto">Mike MacLean</div></div> <hr>------------------------<br>
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