Installing a timing chain question
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Joined: Jun 2018
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Installing a timing chain question
This is the first time I am rebuilding a Chevy engine from the ground up, I've watched others do it while I drank their beer and handed them tools and in my day I built a bunch of Buick engines myself.
I am trying to put the timing set on, I am using a GM performance single roller timings set and a Summit Racing crankshaft, both new.
When I put the crank sprocket on it stops about 1/2 inch from the end of the snout and won't go further back. The timing chain is "slanted" with it in this position, so it needs to go further back. On inspection it appears there is a small ridge in the crank that it is stopping on. This is imperceptable to the naked eye, but I can feel it. There is a bevil on the inside of the crank sprocket which implies it is supposed to seat at the base of the snout.
Is the crank gear supposed to be pressed on? On the other engines I built (Buicks mostly) it was a slip fit. I am sure I can press it on, I'm just not sure that is how it is supposed to work..
I am trying to put the timing set on, I am using a GM performance single roller timings set and a Summit Racing crankshaft, both new.
When I put the crank sprocket on it stops about 1/2 inch from the end of the snout and won't go further back. The timing chain is "slanted" with it in this position, so it needs to go further back. On inspection it appears there is a small ridge in the crank that it is stopping on. This is imperceptable to the naked eye, but I can feel it. There is a bevil on the inside of the crank sprocket which implies it is supposed to seat at the base of the snout.
Is the crank gear supposed to be pressed on? On the other engines I built (Buicks mostly) it was a slip fit. I am sure I can press it on, I'm just not sure that is how it is supposed to work..
Thread Starter
Pro
Joined: Jun 2018
Posts: 532
Likes: 104
The Chevrolet gears have to be pressed or hammered on. They usually aren't super-tight because the damper or hub holds them in place once it is installed.
Be sure the timing mark is on the front where you can see it.
Bang it on with a 5-pounder. I have a slider-sleeve from an old 3 speed transmission that I've used for a very long time. A piece of plumbing pipe would also work. I've also heated them with a torch and they slip right on.
Be sure the timing mark is on the front where you can see it.
Bang it on with a 5-pounder. I have a slider-sleeve from an old 3 speed transmission that I've used for a very long time. A piece of plumbing pipe would also work. I've also heated them with a torch and they slip right on.
