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Old 12-03-2010, 11:38 PM   Thread Starter #1
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Default Timing Chain Help On 04' Max

Im in the middle of changing the timing tensioner and guide on my car, and I decided to change out the head gaskets while Im at it. I screwed up and threw off my timing. I know how to align the big timing chain and the secondaries, but im not sure how to align the crank with the rest of the timing system. I do know you have to line up the gold link with the notch, but how do you determine if the crank is in the correct stroke or not?
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Old 12-04-2010, 11:38 AM   #2
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Default Re: Timing Chain Help On 04' Max

Here you go:

Position the crankshaft so No. 1 piston is set at TDC on the compression stroke.
  • Make sure that the dowel pin hole, dowel pin and crankshaft key are located as shown.
  • Camshaft dowel pin hole (intake side): at cylinder head upper face side in each bank.
  • Camshaft dowel pin (exhaust side): at cylinder head upper face side in each bank.
  • Crankshaft key: at cylinder head side of RH bank.
CAUTION:
Hole on small diameter side must be used for intake camshaft sprocket dowel pin. Do not misidentify (ignore big diameter side).


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Old 12-04-2010, 11:47 AM   Thread Starter #3
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Default Re: Timing Chain Help On 04' Max

and how do I know if the crank is at tdc on piston 1 on the compression stroke? Basically I lost all timing that was set on the car, and I cant determine if its tdc on compression stroke or exhaust stroke.The heads are coming off the car (1 is already off) and im wondering if it matters which stroke I line the cams up with as long as I line them up correctly with the timing chain.

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Old 12-04-2010, 11:51 AM   #4
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Default Re: Timing Chain Help On 04' Max

Originally Posted by explicit.muscle View Post
and how do I know if the crank is at tdc on piston 1 on the compression stroke? Basically I lost all timing that was set on the car, and I cant determine if its tdc on compression stroke or intake stroke.
PM sent. That should be able to answer all your questions 100% accurately.

Also, please post some pics and updates.
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Old 12-04-2010, 11:56 AM   Thread Starter #5
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Default Re: Timing Chain Help On 04' Max

I have the FSM already. My understanding is as long as I line up the gold link on the timing chain with the notch in the crank (key facing rear bank), and the bronze links with the punch marks on the cam, I should be good??????





PS-update is 4 bent intake valves on the forward bank!!!!!!!!! yay
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Old 12-04-2010, 12:04 PM   #6
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Default Re: Timing Chain Help On 04' Max

Damn how hard were you pushing that motor? lol

Yeah my understanding from FSM as well. Just make sure everything is properly aligned.
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Old 12-05-2010, 02:35 AM   Thread Starter #7
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Default Re: Timing Chain Help On 04' Max

New update- all but 1 cylinder has bent intake valves. Gotta wait til monday to get the heads fixed, so in the mean time, im gutting out the cats. Whats with the rear cat being metal and the front one ceramic???????

Last edited by explicit.muscle; 12-05-2010 at 11:24 AM.
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Old 12-10-2010, 02:17 AM   Thread Starter #8
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Default Re: Timing Chain Help On 04' Max

Heres how it all happened, and an update: I was replacing the timing chain tensioner and guide because of that dreaded rattle (which the guide was broken). While I was changing them out, the chain slipped because of the pressure on the cams. I wasn't really changing the chain, I just wanted to know how to line it back up. Oh, and to top it off, after I had gotten it lined back up, I started the motor without the timing cover on to make sure the timing was correct, and the key for the crank sproket flew out, and the result is 10 bent valves, all on the intake side. Just my luck.


So this is what my Max looks like right now.
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Old 12-10-2010, 04:21 AM   #9
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Default Re: Timing Chain Help On 04' Max

Originally Posted by explicit.muscle View Post
Heres how it all happened, and an update: I was replacing the timing chain tensioner and guide because of that dreaded rattle (which the guide was broken). While I was changing them out, the chain slipped because of the pressure on the cams. I wasn't really changing the chain, I just wanted to know how to line it back up. Oh, and to top it off, after I had gotten it lined back up, I started the motor without the timing cover on to make sure the timing was correct, and the key for the crank sproket flew out, and the result is 10 bent valves, all on the intake side. Just my luck.


So this is what my Max looks like right now.
Well thats what you did wrong, never start a car with no cover on the timing chain. Also, before you even take of any timing chain, find the timing points on the chain, take White out and label the timing points on the chain and also on the dowels, so when you re-install your timing will be corrected on the first try. Secondly unless you're completely done, dont start the engine, results can be worse than before as you can see.

The amount of money you're going to spend on repairing mind as well buy another used engine and drop it in. You may want to check your pistons too. Just check everything at this point just to be safe.
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Last edited by K-Ryder; 12-10-2010 at 04:41 AM.
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Old 12-10-2010, 07:58 AM   #10
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Default Re: Timing Chain Help On 04' Max

Wow. That sucks. It may b easier to do the job by dropping the whole sub frame n engine. Thats a lot of work.
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Old 12-10-2010, 07:49 PM   Thread Starter #11
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Default Re: Timing Chain Help On 04' Max

Well my screw up has cost me about $160 so far to get all new valves and to have them installed. Valves from my dealership were $10 each(i replaced all 12 of the intake valves), but I found them on 1staaanissanparts.com, out of Buffalo, NY, and having them overnighted from new york to south texas only cost me $86. They charged me less than $4 a valve!!!!!!! Well I have learned from my mistake and the whole time i've been waiting for parts, I've been researching how to line up the chain, so I think I've got it down now.(hopefully)
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Old 12-10-2010, 07:57 PM   #12
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Default Re: Timing Chain Help On 04' Max

Good luck cuz thats a big job.
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Old 12-11-2010, 09:18 PM   #13
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Default Re: Timing Chain Help On 04' Max

you may want to invest an upgrade HeadGasket now since your already in there...

sorry to hear this has happen to you , at least I learn something, that getting to the timming chain with the motor in the car is do-able...
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Old 12-12-2010, 04:03 AM   Thread Starter #14
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Default Re: Timing Chain Help On 04' Max

it is very doable. I am 6'4" and almost 300 pounds, so I have pretty big hands and arms. I havent had much trouble getting in there to take this apart.
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Old 12-13-2010, 10:56 AM   #15
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Default Re: Timing Chain Help On 04' Max

Now the name makes sense. Lol.
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Old 12-14-2010, 01:18 AM   Thread Starter #16
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Default Re: Timing Chain Help On 04' Max

Originally Posted by Mr DoLLa View Post
Now the name makes sense. Lol.
That name is for my car club. Its all Camaros and Trans Ams. Well, its not really a car club, just a bunch of friends hanging out. My other car is a 96 trans am, which Im used to working on, and this vq is so much different. Im used to working on pushrod v8's, not these dohc engines.
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Old 12-14-2010, 11:41 PM   Thread Starter #17
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Default Re: Timing Chain Help On 04' Max

Well I got the Max back together and its running well. Thanx to all the people who helped out. Couldn't have done it without ya'lls help
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