ok, update time. I've decided I'm going to make a 1/3 scale car/buggy/offroader to put the engine in. There's been too many people over the past few years asking why no-one ever puts one of these model engines in a car and get them to do some work. So we'll see why. It may be a complete disaster, especially with the V10, as there's so much stuff which has to go in with it to run.
Not sure where 10 x couilpacks are going to fit for a start!
Anyway, thats the plan at the moment.
I'm just collecting bits at the moment, and drawing up some preliminary designs.
The engine is still smoking badly so I decided to do something about it.
Removing the heads showed some cylinders far worse than others.
first trial was to put seals on the valve stems. the only way I could think was to O ring the stems. I had to make a new set of valves, but they are all in now, and engine is running.
Result is....no difference. Engine still smokes. At least I know now that it's the rings, or, lack of proper oil control ring.
So that's next on the list.
I tried to run it on the 'dyno' (friction disc and kitchen scales) but above 3000rpm it won't go into full load. I've had the fuel and ignition maps all over the range but it doesn't want to know.
I think now that it is being starved of air. the inlet system is fine for free revving, but to produce any power it needs opening up. Lots.
I need to cure the oil problem so I can get a wideband O2 sensor in the exhaust. trying to map the fuel by ear is a complete waste of time with this. Plus you can't hold a specific rpm/load position long enough to change things on the fly.
On my full sized engines I used the datalogging facility to great effect. Go for a run, look at the datalogs, and adjust fuel map in the house, whilst having tea!
So, oil problem needs solving first. If I can't do that then there's no point carrying on.
All the black oil on the bench came out of a manifold joint after about 15mins running.