2016. március 26., szombat

Engine assembly 2.

On the second day I started with bolting on the rods. The factory recommended procedure is to set an initial torque of 20Nms, and then turn the nut an extra 90 degrees. The bolts are ment to be used only once as they stretch during the work.
At this step I made a mistake, that is quite typical, let me tell You this lesson. When fitting the rod bearings, I noticed, that the fixing ear of the bearing is quite tight fit in its groove, but still it fitted. Or at least I thought so. All went fine. I applied a the assemly lube on the spottlessly clean bearing surface put a bit of Loctite on the thread and torqued the bolts to the initial value. The rod was free moving, all jolly good. But when I made the second step of finalizing the setup by turning the nuts the extra 90 degree, one rod got stucked on the shaft. I knew it immediately: the bearing had not seated completely. Although I was aware what I have to do, I better took a walk around the neighborhood to ease the pain! I had to remove that rod, which ment that its bolts were binned. The worst thing was, that I only had 12 bolts to work with, so I had to stop here for 5 days. So what lesson is here to tell: beside taking extra care on unusualy behaving connecting parts, I will never (NEVEREVER) start with 12 con rod bolts. Anything can happen, so I will always have a reserve set. I cant imagine too many more unoying experiencis during an engine build, that having to stop because of such minor and inexpensive parts.




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