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Country Discussion Topics
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Tractor engine out of time?
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Clod    Posted 08-23-2004 at 20:03:07       [Reply]  [No Email]

Does anyone know how to set the cam to crank timing on a 4 cylinder tractor with no timimg marks?


Texas    Posted 08-24-2004 at 04:56:22       [Reply]  [No Email]
Clod I agree with Bob and deadcarp, put # 1 TDC (4 should be almost TDC) and you can set it from there by ear.


Bob/Ont    Posted 08-23-2004 at 20:57:24       [Reply]  [No Email]
Just have to wing it Clod. Put 1 and 4 on TDC by eye, then put the cam in so the closing side of the exh lobe and the opening side of the intake lobe are flat across/level at #4. That should get you on #1TDC firing stroke.
Later Bob


deadcarp    Posted 08-24-2004 at 01:04:24       [Reply]  [No Email]
Yup, number one piston just a hair past top dead center, on any engine, then line up the timing mark or spark so it just delivers the spark right then. I don't care if it's a model plane or bulldozer, once they get a fuel/air mixture & a spark, they'll start popping.

Unless they're an old hit-n-miss motor. Then the flywheels carry the crank until it slows down and the governor closes to give it another jolt of juice and instant kick from the piston. Jeez i love to hear those things run. :)



Clod    Posted 08-24-2004 at 05:53:00       [Reply]  [No Email]

This was A test.Bob almost got an A .But let's make this engine ONE cylinder now.Remember,It is to time the cam to the crank because there are no marks on either.If this is not done correct.The spark timing is not helpful .By the way,I am waving my flag here.


Bob/Ont    Posted 08-24-2004 at 06:29:04       [Reply]  [No Email]
Trying to trick us Eh, Clod. Thought you where struggeling with that Perkins you lost all those expensive cam bearings to. Well first I would get a 4 cyl and time it as I said before. Then look at the position of the cam lobes of #1 cyl and put it in that way.If I couldn't find one or didn't have the time I would likely put the cam in like I described for #4 cyl and then give the crank one turn.
Later Bob


Clod    Posted 08-24-2004 at 10:46:21       [Reply]  [No Email]

The valves on 4 cycle engines overlap on TDC once in the cycle of 4. Bring one piston to TDC the set the cam on that same cylinder to overlap the vales equally.But if you are bilding a race engine you may want to use a DI and degree whell.but for a normal engine you can be close as the factory was. I also posted this question to see if the guy who charged the condenser with high voltage (instead of 6-12VDC) Was going to take a shot at this.


Burrhead    Posted 08-24-2004 at 11:41:41       [Reply]  [No Email]
Clod I'm almost sure that condensor feller is waiting to see what difference timing the engine makes after you left out the cam bearings.


~Lenore    Posted 08-24-2004 at 12:41:45       [Reply]  [No Email]

.


Bob/Ont    Posted 08-24-2004 at 12:58:14       [Reply]  [No Email]
Lenore you Texans are changing the story and the characters all around. The original version had Newt asking for a Heart, Al (Father of the Internet) Gore asking for a Brain and Ol Slick asking "Where is Dorthey?"
Later Bob


Burrhead    Posted 08-24-2004 at 14:04:28       [Reply]  [No Email]
Dang Bob I remember that movie. It was where they had some flying monkeys attacking innocent people and a self annointed wizard feller behind a curtain blowing smoke on folks and skeerin them.

Naw wait a minute. On second thought that was the Whitehouse story on the news this mornin.


Bob/Ont    Posted 08-24-2004 at 14:46:34       [Reply]  [No Email]
Somethings never change do they Burr.
Later Bob


Clod    Posted 08-24-2004 at 16:21:04       [Reply]  [No Email]
>>> Clod I'm almost sure that condensor feller is waiting to see what difference timing the engine makes after you left out the cam bearings. <<< He just does not get it does he? How many cam bearingsare in that Perkins diesel you speak of? Did you charge a condenser with high voltage?


Burrhead    Posted 08-24-2004 at 16:38:10       [Reply]  [No Email]

You got me stumped now Clod, how many bearings are there in a Perkins condensor.


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