16th June 2016
Did a tiny bit more today:
Bolted anti-roll bar back on
Replaced flexible fuel hose between the pump and the hard fuel line in the inner wing
Put a couple of litres of fresh fuel in the tank
Mike helped me remove and refit the windscreen with some glazing sealant to hopefully resolve the leaking seal
Counted how many jubilee clips are needed
Fitted the radiator and fan temporarily more so bits don't get lost
Cranked the engine a few more times with freshly charged battery, discovered it has lots of lovely compression
Then ran out of time so couldn't do any more. I'm away this weekend too so I probably won't get it running now until next weekend but it is very *very* close.
2nd August 2016
Been a while but I finally got some time in on the Renault today and, luckily, my brother was free to help out too. We wanted primarily to find out why we were getting no spark at the plugs. We went about it methodically with brother doing the multimeter stuff because he understands electricity better than I do. We did find that one of the wires to the coil was badly damaged so spliced a repair in to resolve that. The negative and positive wires on the coil were also the wrong way around.
When investigating:
Battery - reading 12v or so
Wires to coil
- not connected to coil, 12v
- connected to coil and ignition on, 10v
- connected to coil and cranking engine, 8v
We determined that the battery was weak at this point, partly because it wasn't cranking so well, so we got the jump leads and ran them to the Rover for a bit which we tested some more but while the battery power improved, the figures were much the same. Next, we looked at the leads.
New leads - 2v
Old leads - 2v
That seemed very low and when cranking it dropped to 1.8v There was also no spark at the plugs even though we were getting power through the leads, not even a weak spark. A look at the book and a mention of fiddling with the points jogged my memory of someone mentioning 'flicking the points' which we tried, and discovered no spark still.
We were pretty baffled at this point. We swapped between the new and old leads, two different known good batteries (one of which is brand new) and two different brand new coils all with the same result. Then my brother noticed entirely by accident that the points looked wrong with the spring part touching the body of the distributor. He removed and refitted the points and we suddenly had spark and no more massive drain of volts!
Time was running out so I knew it was unlikely I'd get things running, but we tried anyway. We learned that the ammeter and fuel gauge don't do anything so that needs investigating, the dash fan sprang back to life which was nice, and the fuel pump is pumping fuel to the engine. We got as far as the engine proving it has spark, fuel and good compression, even putting a little puff out of the exhaust manifold.
Sadly that was it. Really very close to running now, it just feels like it's a case of getting the various fluids run through and getting timing set up and that sort of thing and we should be away. No pictures because, well, there was nothing to take pictures of.
7th August 2016
Today I was going to take the engine out to sort out the static timing issue. Taking the engine out of this car is pretty involved and would take me quite a long time. However, cutting an access hole in the bulkhead isn't and since this car is on a separate chassis it doesn't cause any structural issues, really. I can always weld the metal back in too and with how long it was going to take me to pull the engine out that option is STILL preferable to me. What I'll actually do is create a removable panel for this section with a seal to keep things where they need to be kept.
Previously, Scaryoldcortina had been and helped figure out what was going on so the engine looked like this.
With the access panel made inside the car, I could get to all the bolts that hold on the timing chain cover and remove it. This is actually quite easy to deal with now, I can see what things are doing inside the car and don't have to find somewhere to put the engine while I work on it.
With the chain attached, the crankshaft and camshaft turn together with no problem on the key but you cannot turn the engine by hand. I even tried using some force with a breaker bar on the sprocket nut but no go. I didn't check the timing because I couldn't get things rotated to the point they need to be so moved on and removed the chain and tensioner to see if the crankshaft and camshaft would rotate freely.
The camshaft does turn very smoothly when the chain is not attached, both from the sprocket end and with the water pump pulley, which you can do by hand with no real effort.
The crankshaft won't turn by hand at all. You can put a bolt in the end of the sprocket to turn it, but even with the breaker bar I wasn't getting any movement and didn't want to force it. However, as soon as you flick the key in the ignition it rotates freely and without any horrible noises. The starter motor does not struggle to turn the engine over.
I did try to rock the car in gear to rotate the crankshaft to the relevant timing position but just didn't have the strength to do it (not much sleep and hurting my arm this morning, probably not helping me there), even with Mike helping. You can't get the timing mark in the right place with the starter because it always jumps just past where you need it, we did try that several times to no avail.
I don't know enough about this sort of work to diagnose the potential problem beyond suspecting it's something to do with the crankshaft being too tight even though that was done to the torque settings listed in the book for the 1181 engine, which this one is. There's oil everywhere and the crankshaft and bearings were installed with assembly lube as directed by people who know better than me so I don't believe the crankshaft is stuck, just tight. What's frustrating is that before putting the engine in the car you COULD turn the whole thing by hand from the crankshaft and the camshaft, that you now can't is baffling to me.
NOW
I haven't been able to do more on the car particularly. The engine crane and stand are both in use so I can't get the engine out of the Renault. What I've learned is the timing was off, something is jamming the crankshaft - either a bearing or the gearbox, as far as we can tell - I have good compression, good oil pressure, good spark and the majority of electrical things work as they should. It's frustrating to be so close to being running and yet so far away. Having to pull the engine back out of the car to possibly have to pull it all apart again is not something I wanted to have happen but knew was a risk. So, until I can get access to the tools (hopefully in no more than 3 weeks time) I can't go any further with the Renault. Not a huge problem, I have one more lost cause that needs attention.