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A little video I made earlier. Whenever I've done all this work on an engine the oil system is almost completely drained, the cam chains are loose, the pump is empty. Firing it up in that state is not good for its health since it will take several seconds to build oil pressure, so I like to spin it up on the starter with the plugs out to prime the oil system. With the plugs out there is no compression and so minimal load on the bearings. It usually takes 2-3 tries on the starter to build pressure. I hook a light bulb up to the oil pressure switch. When the bulb lights up there is oil pressure :)
http://forum.a8parts.co.uk/attachmen...1&d=1554757800 |
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Mate of mine reckons his hands are calibrated as a torque wrench so doesn't need to use them - I respectfully disagree with him (especially considering he couldn't manage to tighten the gearbox sump bolts properly after changing the oil, but that had more to do with being too lazy to modify a tool to get to a couple of the tricky bolts at the back of the sump!) |
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Just a small update tonight, which still represents quite a lot of work...
I took the engine off the separating table and put it back on the subframe ready to go back in http://forum.a8parts.co.uk/attachmen...1&d=1554836696 As I have another car under Jim's at the moment I can't get to the engine bay yet, so on to a particularly tricky little job - the broken bolt in the radiator: http://forum.a8parts.co.uk/attachmen...1&d=1554836696 This just snapped off like a twig as soon as I put any torque on it :mad: It's properly stuck in there so the only option is to drill it out. http://forum.a8parts.co.uk/attachmen...1&d=1554836696 I made a one-use tool to hold the drill straight. This is 18mm ID at this end, with a 4.5mm hole through the middle (as I happen to have a few very sharp 4.5mm drills!) http://forum.a8parts.co.uk/attachmen...1&d=1554836696 It is a nice snug fit on to the boss on the radiator http://forum.a8parts.co.uk/attachmen...1&d=1554836696 and holds the drill bit centred and straight http://forum.a8parts.co.uk/attachmen...1&d=1554836696 Drilled out to 4.5, then I opened up the tool to 5mm and went down with a 5mm drill too so there was only thread left in the hole http://forum.a8parts.co.uk/attachmen...1&d=1554836696 I then ran a tap very carefully down the hole, turning only a few degrees at a time to dig the remains of the steel bolt out of the brass insert. I had to be really steady here - it took a lot of torque to dig out the steel, but too much torque would break the radiator so it is a very fine (and nerve-wracking) balance! It worked though +++ http://forum.a8parts.co.uk/attachmen...1&d=1554836696 http://forum.a8parts.co.uk/attachmen...1&d=1554836696 It took about 2 hours start to finish, which is a substantial saving on a new radiator! I got too cold to continue at this point so had to stop. Cleaning the engine bay tomorrow, and hopefully refitting the engine :) |
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Very nice work so far so a thumbs up from me +++
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As always, it is with great pleasure that I read your description of the work as it progresses +++
Despite all the dirt that accumulates over the years, isn't it wonderful that a good clean up is all that is needed to make the car look very fresh? No need to bring out the welder to repair rust on the body :D That was one thing I really appreciated whenever I was working on my S8 |
Who else is as dilligent as this? I am more amazed with every post! Can’t wait to get the car back - really looking forward to the drive home. Then I need to get to work on the paintwork and cleaning the interior before the meet.
But what if it’s raining? Can I bring myself to take the car out in the rain after all of MJ’s TLC? I know that it’s got an extra edge as it’s my car, but what a brilliant thread and spectacular work! |
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Glad you're enjoying it :)
Today was a day of great progress, countered by great vexation, and very few photos taken with a potato. Mike came over to lend a very welcome helping hand and we got the front suspension off in preparation for replacing the upper control arms. http://forum.a8parts.co.uk/attachmen...1&d=1555011134 As usual the junction box under the chassis leg had disintegrated, so while the suspension was out I figured I'd get these two bolts out and clean this area up, and thus began the vexation :mad: http://forum.a8parts.co.uk/attachmen...1&d=1555011134 Doing so many of these, it was inevitable that these nutserts were going to get me eventually, and today was the day - the bolts were seized in to the nutserts so they just spun in the chassis leg :-( I started off drilling off the bolt heads, and then tried to drill out the nutserts, but they were so loose the drill then spun them round instead. In the end I had to use a carbide burr in the dremel to separate the top and bottom bits of the nutserts and then broke them apart with a centre punch. http://forum.a8parts.co.uk/attachmen...1&d=1555011134 I had to use a magnet on a stick to fish the bits out of the chassis leg - they are about 2 feet down here http://forum.a8parts.co.uk/attachmen...1&d=1555011134 The vexation continued when I realised I don't have any M6 nutserts. Plenty of M5 and M8 obviously :rolleyes: Hopefully some will arrive tomorrow, and if not Mike has some. They will go in here http://forum.a8parts.co.uk/attachmen...1&d=1555011134 Cleaned up ready for tomorrow. It took well over an hour to get here from the first turn of the bolts :( http://forum.a8parts.co.uk/attachmen...1&d=1555011134 After lunch we put the engine back in and started reconnecting everything and I forgot to take any pictures http://forum.a8parts.co.uk/attachmen...1&d=1555011134 I did get a snap of some new exhaust hardware http://forum.a8parts.co.uk/attachmen...1&d=1555011134 Hopefully running again tomorrow +++ |
MJ Your mechanical skills are matched by the descriptive power of your posts. Educational and enjoyable, thank you
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