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Thanks all. I'm making progress still, but believe it or not I've lost my camera so nothing to post at the moment. I've just built a small pipe bender and am trying to do an exhaust manifold. Not that I'm ready for that, but I got a bit bored of machining so needed a break. Also I've just set...

Thanks again. I did consider coming up with some sort of mechanical injection system, using rpm and throttle positionas the variables. When I mapped the ecu's I've used, which were MAP based, I did notice that throttle position and manifold pressure followed each other almost exactly on the...

Thanks chaps. Well, I've decided, rightly or wrongly, that injection is the way to go. Doesn't look like there's too much on the market at the moment for small engines. I have installed a few stand-alone injection systems in my time, which is partly why I'm reluctant to go back to carbs. I made...

Been searching on and off all day to see if anyone has ever fitted fuel injection on a small petrol engine. I found a few references to it but nothing with any details of how to make, or where to buy, etc. I'm just researching if it's practical for my 1/4 scale engine, before I start designing...

Thanks for replies, Swede, linking the advance, mechanically, to the throttle is a good idea. I'll use that as my back-up plan. Lakc, that French site looks like it would do the trick, but there's too much to take in whilst I'm researching all the other required areas for a first IC engine...

Looking ahead to when I need an ignition system for the 1/4 scale V8, I recall reading about an electronic ignition system which had a variable advance curve. I've tried to find it again now but can't. I can see some systems advertise variable advance, but it seems all they do is retard the...

Steve, so far I've got one plug in my block, one in the sump, and 2 in the inlet manifold, and half an M2 tap stuck in the block, which will need sparking out.

Well it's been a while. Looks like I'm not too hot on posting updates. I've been busy in the shed however. Here's how far I've got. I've gone away from my CAD drawings and seem to be making it up as I go along, making sketches and calculations on scraps of paper strewn across the bench. But...

Ok, I know there is lots of info on here but I'm still unsure what to use. This is for a petrol engine, with ally piston and cast iron rings. What I'm trying to find out is what the best material is for my wet liners. By best I mean what material will last the longest in use, forget...

Bore is 19mm, just realised I can't actually remember the stroke. Not at work today and everything is on CAD there. It's about 18mm. George, it's loosly based on Chevy small block, but since starting I've decided I want 4 overhead cams. I'm struggling a bit at the moment though to design the...

Hi all, I recently started designing a small petrol V8 engine, as I've allways fancied building one. I discovered this site and read what people were doing, especially Stevehuckss, and decided my plans were rubbish. So I've designed a much more intricate engine, compared to my first attempt...

Steve, I've just registered on here as I wanted to say how much I'm enjoying reading about your build. I came across this site as I was collecting info on building my own V8. My aspirations have doubled since seeing your achievements so far. I'm building it with manual machines so may be of...