The idea was to paint it in keeping with what I believe the colour scheme of the original Ford Cosworth engine was in the genuine Super Seven; satin black sump, gloss British Racing Green block and a silver/grey head.
This is the first engine I've painted, and although I spent what seemed an eternity cleaning all the parts and preparing surfaces, I have no idea whether the paints chosen will perform well. I have no idea whether they will flake off, or catch fire, or catch fire then flake off - only time will tell.
I've used Halfords high temperature engine enamel for the sump as it claimed to require no undercoat, and it covered very nicely indeed. The block was first prepared using POR-15 and then painted using a gloss engine enamel that I found needed to be applied very sparingly to avoid any skinning and wrinkling (very possibly due to the temperature out in the workshop being startlingly chilly). And the head was painted with another undercoat-free engine enamel Sperex by Simoniz which again covered extremely well. An impressive melange of fumes resulted from all of these - a well ventilated work area was a necessity.
Once everything had been cleaned and painted, the re-assembly was pretty straightforward. I even managed to get the new clutch on with no pain - the only tricky bit was ensuring that the clutch itself was positioned correctly whilst the housing was bolted on. In place of a Mazda Special Service Tool (which there seems to be a boringly endless list of), or a loose transmission shaft, I improvised with the barrel of a chunky marker pen jammed in the end of the engine stand handle. It was a perfect fit.
The only hiccups being having to partially disassemble it near the very end as I had omitted to re-paint the timing mark on the crank pulley. I've read of methods of determining whether the engine is at top dead centre by removing the spark plug from cylinder 1 and either putting a dipstick in there or a piston-stop, either of which could end in tears. Besides with it being free-standing it didn't take a lot of time to get the cowling off the front, and it also allowed me to double-check the cam belt tensioner that I couldn't honestly recall tightening (it turned out that I had). I'm glad I put the mark back on - I'm looking forward to playing with the timing gun I've treated myself to later on.
Another bijou hiccup/annoyance was the small set of mystery components I had left over - nothing vital; a modest collection of brackets and clips. Although I had marked and organised most of the parts as they came off, I hadn't with the clips and brackets. I then found on re-assembly that they are not marked on the Service Manual - they may sometimes be incidentally drawn (and at least one I found drawn in the wrong position), but they are not marked as part of the assembly procedure. So, after many hours poring over the manual and searching the internet for clear pictures of MX5, I managed to get them back on one by one. All except one - the "Bracket of Mystery". I don't actually think it is part of the engine - it looks to me to be an earthing point off the original MX5 chassis that has become mixed up in the parts on my workbench. Probably. Well, it has a bit of red paint on it and that's good enough for me! I do know however, that if I ever do this thing again, I shall take photographs from all angles prior to disassembly.
There was one slightly more serious annoyance - I accidentally dropped a spanner and knocked a chip out of the body panel. A fairly small chip (less than 5mm diameter) but it is annoying none the less. I'm hoping that I can position a bonnet clasp or something over it to hide it. We'll have to see about that later.
So, the engine is all assembled - and I've even bolted on the fixing brackets from the kit, which I found strangely exciting coz it's the first part of the kit proper that I've done anything with. Stage 1 has formally begun - the assembly is go!
I just hope the engine works, works correctly that is, when the car is completely built. That will be a while away yet. The next task which I should be getting into this weekend is the drilling of hundreds of holes into the chassis for the subsequent riveting of panels. I've had a little practice with some scrap aluminium sheeting and box steel, and it went well. I just need to repeat that over, and over, and over...
And now, due to popular request - here is the "Bracket of Mystery"!
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