Diesel engine : Kromhout Gardner 4LW 1940

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi All !
An update :
Easier said than done .
I have temporarily sanded the surface.
20220924_164020.jpg
20220924_164133.jpg
20220924_164053.jpg
 

Nerd1000

Well-Known Member
Joined
Dec 7, 2020
Messages
107
Reaction score
73
Location
Australia
Hi Minh Thanh,

How do you plan on doing the injection pump for this one? The original Gardner pump is to my knowledge inline jerk pump with helix control, quite different in shape from the valve lash controlled type in your single cylinder engine.

For best running it will be necessary to balance the injectors so each cylinder receives a similar quantity of fuel.
 

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi Nerd !


Hi Minh Thanh,

How do you plan on doing the injection pump for this one? The original Gardner pump is to my knowledge inline jerk pump with helix control, quite different in shape from the valve lash controlled type in your single cylinder engine.

For best running it will be necessary to balance the injectors so each cylinder receives a similar quantity of fuel.

Some pictures would be easier.
Don't look at other details, focus on what you need. - because there are some parts not shown in the picture such as springs, ... camshaft is just a symbolic shaft
If you need any information, please ask
A.jpg
B.jpg
 

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi all !
An update
Pictures from 1 week ago
I was a bit busy for about a week, and when I returned to the project, I didn't know where to start
Anyone selling patience and diligence ?!? , I want to buy some


20221016_162114.jpg
20221016_162249.jpg
 

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi all !
An update :

After a lot of worrying about the space for the injectors, and changing a few sizes when machining as well as changing the design of the injectors and after testing I feel fine.
Time to beautify the surface and drill holes for bolts...

20221114_170929.jpg
20221114_171017.jpg



Key for injector

20221114_180749.jpg



An overview

20221114_171138.jpg
20221114_180912.jpg
 

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi all !
An update :
There are a few places I really hate even though it's a bit hard to see, so I decided to "sculpt" to make it more beautiful.
I made a very sharp chisel and made it beautiful by hand

20221117_193532.jpg
20221117_193637 - Copy.jpg
20221117_193739.jpg
 

Basil

Well-Known Member
HMEM Supporting Member
Joined
Mar 18, 2017
Messages
198
Reaction score
285
Location
Dorset UK
Very nice! On the little Honda GX engine there were some features that were frankly much quicker and easier to sculpt (by that meaning a hacksaw, a file and maybe the odd specially ground chisel) than go through endless setups. Complicated casting features on the crankcase I could only get so far with on manual machining. Just a little bit harder material to whittle down than wood!
To a large degree I guess the casting forms were sculpted which is what makes them so tough to replicate without a CNC.
 

Attachments

  • IMG_8976.jpg
    IMG_8976.jpg
    76.6 KB · Views: 0
Last edited:

minh-thanh

Well-Known Member
Joined
Dec 29, 2016
Messages
1,254
Reaction score
803
Location
Viet Nam
Hi all !
An update :
I just did a preliminary lapping for the nozzles, when I make the injectors I will lapping the needle with nozzles

20221120_175313.jpg
20221120_175647.jpg


lapping tool :

94198-20221004-104123.jpg
 
Top