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#1
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What do I need to know about camshafts?
Ok, I know there was the old weak ones for the 617.912's, and my engine has the small thread pencil plugs, and was also told my engine came from a newer year car than mine, so I can eliminate that one from the worry list. Now I was reading a post mentioning matching valve caps and such with cams, and different lobe heights? I very badly need to get mine replaced, and need to know what is involved in properly identifying it and related parts I might need to check. I had just thought there was only the two cams for the N/A engines...
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Chris 64 190D R.I.P. 80 240D W/617 engine -for sale 82 240D -for sale |
#2
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Probably ought to find the online manual on this ... Braingears.com or something like that...
You do need to match the valve adjusting top nut with the camshaft or the cam follower ...don't remember which one offhand... on the 616 engine there is an ' uprated' engine and the regular... the first has a few more hp .... and got it with higher lift lobes... there are chilled cam lobes and something else... try to find the online manual ... but hollar if you can't and I will try to find my manual... |
#3
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Would be a good idea.....
It would be a good idea to locate your engine number......cast into block.....
If you know the exact engine #...it will help ID the exact cam that you would need..... SB
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Diesels: '85 300D, "Max, Blue Benz", 155K, 27.0 MPG '84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG '77 240D (parts car) '67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP) Gassers: '94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG '85 190E 2.3, 148K....Parts Car '58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG |
#4
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You cant use an older style (pre 80s) head on a new style block because of the pre combustion chambers interfering with the pistons which your prolly aware of. I had to replace a cam on my daughters 78 240D so I just found an early eng at the wrecking yard. Shouldn't be a big deal.
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#5
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Quote:
Install the correct precombustion chamber into whichever year in order to match the piston top ? |
#6
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Thats a good question. I have always just made sure the head matched the block, early or late, and thats the 616, I'm guessing the 617s are the same.
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#7
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Yes, it is.... so I was hoping YOU would look it up instead of me.... LOL
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#8
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Well actually when I think about it more, it wouldn't work because the head has a different configuration to accommodate the different type of P/C (spray pattern) so if they fit or not it wouldn't matter, anyway its snowing between here and the shop
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#9
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Quote:
I thought it got that " different " spray pattern from number and placement of holes ( and then more power by increasing the size of a couple of them later ).... I really had the impression that one could move the precombustion chambers from one to another in order to match up with the pistons... How are we going to confirm which way it is ? If you ' think about it' more is there a chance we can get a different answer ? LOL |
#10
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I went to the shop and they both look the same. I was thinking there was some different milling so you might be able to just swap P/Cs to match the pistons.
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#11
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Funny you should say that...I was just staring at that earlier this afternoon while tinkering on glow plugs and thinking to myself "I wonder if I should write that one down with the stamped one". I'll get it tomorrow, I already have the stamped one from under #5. On the bright side all my gp's bench tested fine, look pretty new too. so I tore the module apart tonight.
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Chris 64 190D R.I.P. 80 240D W/617 engine -for sale 82 240D -for sale |
#12
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Mustang Man, If you are having problems which you attribute to lack of glow plug help in starting the engine..but find no obvious faults... consider using the glow plug hole reamer... carbon slowly builds up around them and insulates their effect ...so you get the symptom without them being bad in any other way... I think they may have one in the rental program...check the sticky's at top of page...
The FSM says to apply heavy grease to the threads when you do that.. to capture chunks .... and then to use compressed air to blow out the rest... Don't use the engine turning over as that may suck it into the bore depending on the start position of the piston .... |
#13
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I know I need a cam however as I have visually seen (not just felt) a ridge in one of the lobes along an edge where the lobe does not rub on the rocker, and it has a bad miss when cold, subsides when warmed but still can be noticed @ certain RPM's. The miss is getting worse and my mileage is dropping now so I think its getting worse, I don't want to fiddle with the valves until I have a good cam to set them by. Once the cam is done and valves set, if the miss continues I will look into getting an adapter for compression checking, and pending those results will move into having injectors/pump tested, I want to pull the injectors anyway for inspection as I have no knowledge of past maintenance/history on them. Engine supposedly has around 130K on it now. I have already verified the chain timing and IP timing to not be a problem.
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Chris 64 190D R.I.P. 80 240D W/617 engine -for sale 82 240D -for sale |
#14
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Why don't you pull your precombustion chambers and see if those five to seven holes where the fuel is dispersed into the combustion chamber after hitting that difuser... you can not check those TINY holes without taking the chamber out of the head ( or the head off the engine ).... They are critical to the burning process....and are one item which might show up more on a cold engine than after warmed up....
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#15
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Quote:
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Chris 64 190D R.I.P. 80 240D W/617 engine -for sale 82 240D -for sale |
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