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Cummins 220 valve adjustment

Posted By hanks1961kw Tuesday, June 15, 2010 4:42 PM
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hanks1961kw
 Posted Tuesday, June 15, 2010 4:42 PM
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This week we took apart a Cummins 220 to inframe and add jake brake to. Only thing is we are up a creek without a paddle.With liners in, bearing, rods and pistons in. We finally torqued the heads in and started setting in the jake brake studs on the rocker boxes.

Only thing is now we are a little stuck. Being the first 220 we have inframed we dont know  how to set the valve adjustment. We started with the firing order but the marks on the accessory drive pulley are all screwed up. We would sure appreciate help.

I have drawn a blank.And  Dad has forgotten and we have no service manual. The last engine we built was my Dads Big Cam two years ago and a L10 a year before that.

If it wasn't for this site we would have screwed up with the torque on the heads earlier today. .

Any advice on the jake brakes also would be needed. How much do we have to torque down the lubricating nit on the rocker boxes also? Thanks for any HELP


someday we'll get it going
Aaron
 Posted Tuesday, June 15, 2010 5:42 PM
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Hank, I don't have my books here at the computer, I'll look when I hit the shop tomorrow.  But Glenn could beat me to it.
 Did you get the E-mail I sent about the wing window gaskets.


I can't get anymore out of it, I've got both sticks hot clear up to the knobs allready.
www.killcarb.org
Daryl Gushee
 Posted Tuesday, June 15, 2010 6:21 PM
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In what way are the marks on the accessory drive pulley screwed up? It's going to be tough without them. The key on the cam shaft should hold them in the right position. Unless you forgot to put the key in? Some are marked with letters, A=1-6, B=3-2, C=5-4. There is also an additional mark that represents TDC, not to be confused with the valve set marks. I like to take a white paint pencil and write on the pulley at the marks for easier identification. I also paint the arrow. That makes it easier to line the mark and arrow up. You may end up taking the pulley off to better determine what the marks are. There is no room for error here. You could end up costing yourself some dough in new parts.
Just like any Cummins you need to determine which rotation the engine is on prior to tightening any of the crossheads or you will bend pushtubes. You can determine the rotation by watching the pushtube travel. On 1-6 the valves will be closed on the cylinder with the lowest pushtubes, 1 or 6. That is the cylinder that gets the adjustment. Follow the firing order through 2 complete engine rotations. It is a good idea to turn the engine only in the direction in which it normally rotates during the adjustment procedure. Try not to go past a VS mark because you will be tempted to turn the engine in the wrong direction to get back to the mark.
If you can get that problem cleared up the valve lash settings cold are.
Injector = 48in.lbs
intake = .016
exhaust = .029


I am self taught out of necessity and I am sure some of the others on this site are better schooled and also better at explaining.


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Daryl Gushee
New Gloucester, Maine
hanks1961kw
 Posted Tuesday, June 22, 2010 5:33 PM
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First of thanks Darryl that was exactly what we needed. My brother and father figured it out. He just wasn't use to the marks on the accesory drive pulley. We didn't touch anything on the cam setting.Just as they were working on it They figured that they had to trim the rocker arms to fit the jake brake forks. And then they figured we had the wrong crossheads.We had small cam jake brake crossheads the spacing were they sit on the vales is suppose to be narrower and we have solid guides. We are short two crossheads.I am going to start another thread.

Aaron, I just emailed you back on the rubber gaskets I have been working on it. Thanks HANK


someday we'll get it going
jose a castillo
 Posted Friday, March 04, 2011 6:01 PM
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Hello I NEED CALIBRATION INJECTOR CUMMINS 230.

small cam and valve please Ihave problen whit engine .

to much smok, thank you j,a,c,!!!
Daryl Gushee
 Posted Sunday, March 06, 2011 1:11 PM
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jose a castillo (3/5/2011)
Hello I NEED CALIBRATION INJECTOR CUMMINS 230.

small cam and valve please Ihave problen whit engine .

to much smok, thank you j,a,c,!!!


There are several methods of setting valve lash and injector torque on a 230. I prefer to use the firing order 1-5-3-6-2-4 as a guide.
When the timing mark is on A or 1-6 and the injector is at the top of it's travel on 3 and the valves are loose on 5 is the best place to start. If you are on A or 1-6 and these things are not taking place turn the engine over another full rotation to A,1-6. Follow the guide below.
 mark   Injector at top of travel  Valves loose  Set Valve lash and injector
A  1-6                  3                                5                            1
B  2-5                  6                                3                            5
C  3-4                  2                                6                            3
A  1-6                  4                                2                            6
B  2-5                  1                                4                            2
C  3-4                  5                                1                            4

On a 230 with aluminum rocker housings the Injector torque is 72 inch pounds.
With cast iron rocker housings 48 inch pounds.
The intake is set cold (app. 70 degrees F) at .014" aluminum and .016" cast iron
The exhaust is set Cold at .027" aluminum and .029 cast iron.

I hope this answers your question.


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Daryl Gushee
New Gloucester, Maine
Sunday, March 06, 2011 1:18 PM by Daryl Gushee
Tony Bullard
 Posted Monday, March 07, 2011 3:21 AM
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Very nice explanation Daryl. Short, clear and precise.

Tony Bullard, Chelsea Vermont
''''''''34 Ford BB restored,
''''''''62 Autocar DC870H restored
Daryl Gushee
 Posted Monday, March 07, 2011 1:21 PM
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Thanks Tony,
   I cut my teeth with a Cummins NTC230 and learned my way around it pretty good. I still had most of that info in my head but had to look in an old notebook of mine to double check a few things.
   I could make that ol 230 pull. After I put a turbo on it she was making 290 HP.
    I passed a guy on a long grade in Pa., grossing about 70,000#, he asked me what I had for power. After I told him I had a 290 he laughed and said "Ya, one on the right and one on the left, you just past my 425 Cat. What do you really have?


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Daryl Gushee
New Gloucester, Maine
Aaron
 Posted Monday, March 07, 2011 5:44 PM
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Did you have to stop and pull the hood for him.

I can't get anymore out of it, I've got both sticks hot clear up to the knobs allready.
www.killcarb.org

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