Recent content by Arild

I like your methode of lapping. Clever! I'll try to do the same!

I'll try using "silver steel" (BS 1407 / AISI O1)

Yes, this engine is very small. Now I've started on the most challening part. - the cylinder top(s) inside!. I have made one intake valve so far (2hrs) and two cylindercuides/seats. The seats are pretty easy to make, but the valves are not that easy.. I make them in Titanium GR5 (bought from...

I only use a manual mill and lathe. And some careful hand filing! Jigs/template for alignment of holes. A lot of works left to do. Missing pistons, and cam, lifters etc.

On this picture there is a full 4 cyl engine?

Just to proof hovw this VW is:

Today (or evening) I've been milling on the VW top. Now it should be near to complete. Remains are the cooling ribs, but I should wait until everything is built. as it will be fragile to mill or filed after, so best is to keep it as a hard block (but very tempting to do it!!!) Ok, I had to make...

Not 64? Volume for sure is 4x4x4..

If you got a specific requirement for a ignition system, I can help you! Send me a PM!

I'll use spring on each side, its not necessary, but it looks more like the original then... Yes, it has a dome combustion chamber, and that is not original, but I cannot make a original, because I dont have an CNC mill. The valves are not in center, and that is for make better room for the...

I will use Rimfire Z2 sparkplug. The "rcexel" has a ignition module that you need! I use microcontroller from Microchip, because then I can use assembler programming that I know quite well (in my first job, I worked programming for Electrolux) The taser is not a CDI, but a multi pulse igniter.

I feel very happy! I Made pilot holes for what I fear most - the intake. "double angle" and very small. I hit the target - not perfect according to drawing, but good enough. Ø4mm holes. The little "❤️" is the intake to both cylinders. (it will be milled round later) This will be a "single port"...

More like this.. (now the white turned into red)

Hello Ray! I use a microcontroller from Microchip to control a LCD and send on/off to a "taser" module (20kv module bought on Ebay). The microcontroller receive signal from one magnet mountet on the flywheel and stationary hall-switch. Among with a software program it will control the sparks. In...

Just some picture of progress in my build.. The orange parts are 3D printed parts that will help me with alignments. I have made the cylinders black (heat and oil), so they looks nice!😁. I've also milled the combustion dome with my specially made HSS 6x6mm hardsoldered on a Ø15mm axle and then...