Finding top dead center compression stroke fast and easy 289 small block Ford
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- čas přidán 21. 01. 2020
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Moving along on our 66 Mustang 289 project. Today we show you how I find top dead center compression stroke fast and easy.
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Good video. Nice tip about removing all the plugs, especially if you're going to replace them anyways. Good for easily rotating the engine without a remote starter, or a buddy to turn it over.
Thank you! Ya they are too easy to remove.
Very good video. Its nice to see these tricks!
Thank you and you're welcome!
Thank you from Los Angeles ca. ( Long Beach)
You're very welcome
Great video thanks. My question is how do you know if you are 180 out? My motor is not running the way it should and I am concerned that it is 180 out because it has a cycling vibration as the RPMs increase.
So you'll want to get your number 1 cylinder up to top dead center on compression stroke like in this video. Then remove your distributor cap to see which ignition wire your rotor is pointed at. If you're not close to #1 wire, then you're off. Sometimes you're close enough, you can just get it in time by loosening the distributor and twisting it. But if you are way off, you'll have to remove it and re-install in the right position.
Just for clarification. You rotate the harmonic balancer clockwise and the air presses your finger out and you mark a line on the harmonic balancer right at the pointer. Then do you rotate it counterclockwise and mark a line at the pointer? Then split the difference between the two marks to mark TDC?
So you do want to rotate the engine clockwise which is its natural rotation. Once you feel the pressure building, that means that cylinder is compressing or the piston is on its way up with both valves closed. I don't make any marks on the balancer. All balancers should have markings on them such as TDC (top dead center). Once you know #1 is on its way up for its compression stroke, you line up the TDC mark to the pointer and that "should be" (given all other components are correct in the engine) top dead center compression stroke #1 cylinder.
@@AlfsMustangGarage My problem is I'm trying to find TDC because there is only one white mark a PO put on the balancer. I've cleaned around that mark but no other marks are present. Not sure if it's TDC or what. I'm wanting to verify so I can put some new timing tape there and then make sure my timing is correct.
So what you will want to do is watch some videos on how to use a piston stop to find your true top dead center. You could try to get to the point where the piston is on its way up and compressing and just try to eyeball it. However, if you're trying to make a new mark on the balancer you will want to use a piston stop to find your true top dead center. There are several videos on CZcams that demonstrate that.
@@AlfsMustangGarage What I'll probably do is use your clockwise method to get close and then use the piston stop. And then use your method counterclockwise to get close and use the piston stop to get the other mark. How far in would you adjust the piston stop inside for the piston to stop? 1 inch, 1.5 inch, etc?
Without knowing the specifics of your engine and build, I wouldn't comment as far as that goes.
So you line up the pointer to the white line on the balancer?
If you want it at top dead center, no. The white line is just the owner's reference mark for when he times it. The white mark is easier to see on the timing light.
@@AlfsMustangGarage oh ok so when I feel air trying to push my finger out of the 1st cylinder I’m basically on top dead center then I use my timing light from there and adjust it, from the pointer connected to the balancer.
Not exactly. When you feel the compressed air pushing your finger out, that means the cylinder is on its way up but is not all the way to the top till you line up the pointer to TDC labeled on the balancer. You should only need to do this if you're trying to install a distributor or something to that extent.
@@AlfsMustangGarage sorry for the dumb questions appreciate the responses, so I then keep rotating the same direction assuming I’m on the compression side until I reach the TDC mark.
Correct. And it's all good. No such thing as dumb questions.