Timing Chain Swap Question????
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Senior User
Joined: Aug 2001
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From: Queen Creek, Arizona
Timing Chain Swap Question????
So before I consider doing this....Whats the easiest way to assure that #1 piston is a TDC?,.... and how do you rotate the engine once the spark plugs have been removed?
I assume you can use the starter in quick bursts........
What is the correct Pressure to read so I know TDC has been achieved?
The truth is Im waiting to do a bunch of work.......Water pump.
I figured if I have it tore down might as well do Timing Chain and Gears, Fuel Pump. Any special tools that I might need to do this that I wont think of?
1985 Bronco XLT 351 4brl Holley C6
Or any other suggestions.....
I assume you can use the starter in quick bursts........
What is the correct Pressure to read so I know TDC has been achieved?
The truth is Im waiting to do a bunch of work.......Water pump.
I figured if I have it tore down might as well do Timing Chain and Gears, Fuel Pump. Any special tools that I might need to do this that I wont think of?
1985 Bronco XLT 351 4brl Holley C6
Or any other suggestions.....
Last edited by Tetchy101; Feb 4, 2003 at 09:35 AM.
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Joined: Jan 2001
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From: Virginia
Timing Chain Swap Question????
If you are doing the timing chain and gears, and are not going to pull the distributor(you don't have to doing this job), then don't worry about finding TDC. Just line the timing marks up on the gears. If you get the alternator off, and the bolts loose on the waterpump and timing cover, without any of them breaking off, you will be past the hard part.
You will need a puller to get the balancer off.
You might need to lower the oil pan a little to get the timing cover off. When you get a timing cover gasket kit, it will come with the front oil pan seal, and two little pieces of oil pan side gaskets that you will have to splice into the old gasket.
You will need a puller to get the balancer off.
You might need to lower the oil pan a little to get the timing cover off. When you get a timing cover gasket kit, it will come with the front oil pan seal, and two little pieces of oil pan side gaskets that you will have to splice into the old gasket.
Last edited by Franklin2; Feb 4, 2003 at 01:09 PM.
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Senior User
Joined: Aug 2001
Posts: 109
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From: Queen Creek, Arizona
Timing Chain Swap Question????
Doesnt the Timing still get affected by the swaping of the gears and chain.....I guess IM asking....say in the past 18yrs the truck has jumped a tooth or 2. Wouldnt I need to adjust the distributor to compensate for the "more" correct timing.....or is all what I said NIL.......just stick on the gears and IM good to go.
Side note: the truck is running fine now.....so one would assume the timing is fine. Which means I answered my own question.....just swap the gears and line up the indexing marks....
Tim
Side note: the truck is running fine now.....so one would assume the timing is fine. Which means I answered my own question.....just swap the gears and line up the indexing marks....
Tim
Post Fiend
Joined: Nov 2002
Posts: 9,987
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From: Memphis, TN
Timing Chain Swap Question????
If the timing had jumped even one tooth, it would barely be driveable from the loss of power. But as long as the distributor is always engaged to the camshaft, you don't have to worry about retiming - just make sure the dots on the timing gears point toward each other when the chain is back on, and it'll be correct.
Now if the distributor has been installed wrong...
Now if the distributor has been installed wrong...
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Joined: Jan 2001
Posts: 56,977
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From: Virginia
Timing Chain Swap Question????
You are thinking correctly about the distributor timing being affected by the timing chain slop, but this will be a minor tweak on the dist after the job is done. Like steve said, it won't be off much.
Elder User
Joined: Oct 2002
Posts: 513
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From: Lincoln NE
Timing Chain Swap Question????
Just from experience, make sure you're carefull not to drop any old gasket pieces into to oil pan if you're not planning to pull the oil pan (which is a mother if you don't know exactly how to do it), you'll plug the screen on the oil pump pick up arm. Usually covering the opening to the oil pan with a rag works. Just my hopefully helpful two cents.
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Elder User
Joined: Oct 2002
Posts: 513
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From: Lincoln NE
Timing Chain Swap Question????
Oops! Didn't finish my sentence. Here goes:'
Hopefully my two cents helps you out.
There, now I feel better.
Hopefully my two cents helps you out.
There, now I feel better.
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