Quote:
Originally Posted by Henn28
That is interesting about the ARP bolts. Did you stick with them, or swap to BMW bolts? I was going to buy ARP connecting rod bolts because they are cheaper than OEM BMW bolts, but not if they are a struggle.
ARP doesn’t make main bearing cap, or head bolts for the M62 family I think. Only conrod bolts.
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Yes, ARP main studs, rod bolts, and head studs. I'm going to bleed the clutch here this morning and put the starter motor to it. Hopefully no strange noises. Then a whole bunch of reassembly for the cooling and intake system, and some computer things, and maybe it will run.
The instructions for the rod bolts said to torque them to 36 ft lb, but if you have a stretch gauge, use that until you get 7,000 of stretch. The stretch gauge is pretty easy to use. Most of them I had to torque to 45 ft pounds or even a couple of them up to 50 ft lb to get the stretch. But I probably would have been fine just at 36 ft lb, many people say they just torque and have never had a problem, I'm not building a 900 horsepower 9000 RPM racing engine or anything. It should be fine to putt around town and make a little boost.
If the factory bolts weren't all torque to yield I would have just went with them. I tried reusing the old set to check the clearance at first and that didn't work at all. And I didn't want to buy two sets just to throw one away to check the clearance but that's really what you would have to do.