1966 Case 930 CK timing marks

[nick831]

Diesel engines are different then gas. So running ATDC is common.

Diesel engines run injection timing at ATDC because:

• The hot, compressed air already exists at that point.
• Injecting after TDC ensures fuel ignites immediately and combustion pushes the piston down effectively.
• It allows for optimal power, efficiency, and control of ignition delay under varying conditions blog.truegeometry.com+2.

In short, ATDC injection timing in diesels is a direct result of their compression ignition design, ensuring maximum power and efficiency while avoiding wasted energy or incomplete combustion.

 

[nick831]

Not uncommon for diesels to run ATDC. Most do. Here are the reasons why.

Diesel engines run injection timing at ATDC because:

• The hot, compressed air already exists at that point.
• Injecting after TDC ensures fuel ignites immediately and combustion pushes the piston down effectively.
• It allows for optimal power, efficiency, and control of ignition delay under varying conditions blog.truegeometry.com+2.

In short, ATDC injection timing in diesels is a direct result of their compression ignition design, ensuring maximum power and efficiency while avoiding wasted energy or incomplete combustion.

 

[nick831]

Sorry I posted that twice

 

[used red MN]

Sorry I posted that twice

Just FYI, there is an Edit button, you could take out everything and just leave “oops double post”
On a phone you access it through the 3 dots to the right of Report at the bottom left.

 

[nick831]

Thanks, didn't know how to do that.

 

[smallsquaressuck]

Not uncommon for diesels to run ATDC. Most do. Here are the reasons why.

Diesel engines run injection timing at ATDC because:

• The hot, compressed air already exists at that point.
• Injecting after TDC ensures fuel ignites immediately and combustion pushes the piston down effectively.
• It allows for optimal power, efficiency, and control of ignition delay under varying conditions blog.truegeometry.com+2.

In short, ATDC injection timing in diesels is a direct result of their compression ignition design, ensuring maximum power and efficiency while avoiding wasted energy or incomplete combustion.

Putting that ChatGPT to work huh lol just messing but I'm not too used to diesels but that does make some sense. The only thing is when I try looking up the injection timing all I can find is really just this one old forum thats say 31 BTDC. I feel like the best way to get it timed is by having someone with a running 930 line up their pump and take a picture of which mark on the pulley is lined up with the pointer. This is the forum im referring to, theres not much on it but its really damn near all i can find https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=case&th=48888

 

[used red MN]

Thanks, didn't know how to do that.

You can still do it. I think the time limit is 24 hours from when you post it. To be more clear you click the edit button and then you can change whatever is in the reply, like select/highlight in and hit delete or backspace it all out.

 

[StanIowa]

set the timing at 31 degrees. If you set it at tdc it will not have any power. If you don`t like 31 go towards 35. 31 will give the best combination of power and starting. Stan

 

[smallsquaressuck]

set the timing at 31 degrees. If you set it at tdc it will not have any power. If you don`t like 31 go towards 35. 31 will give the best combination of power and starting. Stan

Yeah I figured it was 31, and just to confirm where it says 35 on the pulley i go 4 marks in and set it there right? I mean if thats not entirely right it would still be 30 or 32 which isn't entirely spec but would get it running

 

[mEl]

If you got it to 30-32 deg you would never know the difference if at 31. When I put Turbos on 830s i Bump the timing out to 35 and give it a few more RPMs . The downside is harder cold starting but it wakes em up HP wise.