Diesel engine : Kromhout Gardner 4LW 1940

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Hi All !
An update
Cylinder head assembly
20230222_182928.jpg
20230222_183140.jpg
 
Hi Roger B !
First, I defined the holes in the paper..with the cylinder head using the tool in the picture ,

20230306_082220.jpg



Then I cut the sample paper to the size of the cylinder head - but slightly larger about 0.5 mm . I also cut 0.5 mm thin aluminum and paper to make gaskets
I do as shown in the picture

20230306_082709.jpg



Finally, fix them together with bolts and cut the size of the template and grind the edge of the aluminum gaskets, and cut the paper gaskets according to the aluminum gaskets.


20230306_082817.jpg
 
Thank you :) I see you also use a template. I have been using an aluminium template and hardened punches with high temperature gasket material. I was wondering about using the same methed to make some thin copper shims to adjust the compression pressure.


276 Punching out the holes.jpg


277 Seems to fit.jpg
 
Hi All !
An update :

Checked the gearbox, everything is fine, but I can't assemble it yet because I am missing a lubricating oil tube for the cylinder head, I ordered small brass tube

20230325_095910.jpg


While waiting for the small brass tube, I made the fuel filter

20230323_104912.jpg


I don't intend to assemble the pump body into the engine block as I haven't finished it yet , but it was too difficult to install, so I decided to install it first.

20230325_100036.jpg

20230325_100340.jpg
 
looking great !!!. if it were mine I might have made the heads not-to-prototype so that more of the rocker arms would be visible when the covers are left off, its just a personal quirk that I like to see exposed rocker arms on my engines.
 
An interesting idea :)

Do you have a means to balance the injection timing accross all 4 cylinders?
 
Hi Roger !

Do you have a means to balance the injection timing accross all 4 cylinders?

That's a question that I really...can't answer
With the single cylinder engine I did, I know the injection time - exactly the lobe starts to contact the plunger - is between 22 and 45 degrees before TDC ( 22 is from 19 to 22 . 45 is from 45 to 47 and I would say 22 to 45 and that would be the correct number)
Balancing the injection time for 4 cylinders seems impossible to me - at the moment. Because it depends on the spring force of the needle and the pressure in each cylinder
With the force of the spring of each needle: I will try to adjust to be able to vaporize as much oil as possible
With the pressure in each cylinder , it depends too many factors such as cylinder , ring , piston ....
With this engine, I will choose the injection time to be 25 degrees before TDC and when the engine runs (hopefully it will run) I will adjust more
It's so small and I can't control everything, all engines I've done I'm pretty confident it will run , but with this diesel engine : will it run? And how does it run? I'm not sure
 
Back
Top