How many hours to replace timing chain? - Nissan 240SX Forums
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#1 Old 03-30-2004, 05:14 PM
 
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How many hours to replace timing chain?

This is for a DOHC and I am replacing the upper and lower tensioners, guides, gears (except idler), and chains. I have a lift, another guy to help me, and just about any tool you can think of.
6 hours?

Funny how my "truck" motor was in more cars than trucks.
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#2 Old 03-30-2004, 07:05 PM
 
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You can do it in six hours. Make sure you put all of the bolts in labeled zip lock bags or something. As long as you're organized and know what you're doing, then you can do it in 6 hours.

curt
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#3 Old 03-30-2004, 11:18 PM
 
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I'm on a kinda tight schedule to do this so I just wanted to make sure that it could be done in under 9 hours. I was hoping for 6, thats why I asked. Now I just hope I don't run into any problems, or I won't make it home from college next week for Easter break.

Funny how my "truck" motor was in more cars than trucks.
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#4 Old 03-30-2004, 11:22 PM
 
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i have a tool that you could change the timing chain in less that an hour. probable even less than a half hour if you race through it.
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#5 Old 03-31-2004, 12:09 AM
 
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ugh. I don't know if i could do this i was reading the manual and looks frustraiting... :/

also how do you time your engine and what is liquid gasket?

Last edited by w1ngzer0; 03-31-2004 at 12:17 AM.
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#6 Old 03-31-2004, 07:59 AM
 
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Quote:
Originally Posted by w1ngzer0
ugh. I don't know if i could do this i was reading the manual and looks frustraiting... :/

also how do you time your engine and what is liquid gasket?
It's not to hard I think there is like 5 timing marks altogether that have to be lined up and it's good to turn the engine over and watch the valves to make sure it's in time and you don't have a piston smack a valve. My head is ported like crazy so I could see in real well but you can use a feeler gauge. Liqued gasket is a gooey stuff you put on the gaskets to make sure they seal good. Here is a pic of my timing chain install.
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File Type: jpg timing chain install.JPG (183.5 KB, 116 views)
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#7 Old 03-31-2004, 10:32 AM
 
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Quote:
Originally Posted by 89-240sx
i have a tool that you could change the timing chain in less that an hour. probable even less than a half hour if you race through it.
LOL. ur a loser.

curt
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#8 Old 03-31-2004, 08:03 PM
 
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Quote:
Originally Posted by 89-240sx
i have a tool that you could change the timing chain in less that an hour. probable even less than a half hour if you race through it.
Maybe you have some rigged up tool you put together that gets the top chain off and on quickly, but I'm replacing everything for the upper and lower chains.

Funny how my "truck" motor was in more cars than trucks.
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#9 Old 03-31-2004, 09:17 PM
 
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Quote:
Originally Posted by 2002whitewrx
It's not to hard I think there is like 5 timing marks altogether that have to be lined up and it's good to turn the engine over and watch the valves to make sure it's in time and you don't have a piston smack a valve. My head is ported like crazy so I could see in real well but you can use a feeler gauge. Liqued gasket is a gooey stuff you put on the gaskets to make sure they seal good. Here is a pic of my timing chain install.
cool but timing it is my main problem i have no idea what involves in timing the motor
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#10 Old 03-31-2004, 11:34 PM
 
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Quote:
Originally Posted by w1ngzer0
cool but timing it is my main problem i have no idea what involves in timing the motor
Timing the cams with the marks is no big deal. With the lower chain 2 of the links will be painted. Then on the crank gear and idler gear there will be a dot near the teeth of the gear. When the lower chain is placed on the gears, the dots on the gears must be next to the paint marks on the chain. For the upper chain there are 3 marks on the chain. These paint marks must line up with the dots on each of the cam gears as well as the idler gear. Now that all 5 dots on the gears are next to all five painted links the cams will be in proper timing with the crank shaft.

Funny how my "truck" motor was in more cars than trucks.
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#11 Old 04-01-2004, 06:08 PM
 
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i had a mechanic do it it took him almost 2 weeks to do it



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#12 Old 04-01-2004, 08:44 PM
 
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maybe a newbie question...but honestly....wuts the benefit of a timing chain over a timing belt?
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#13 Old 04-01-2004, 09:04 PM
 
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see man cars run 2 different kinds systems. One is belt one is chain. The ka24 is ran by chain the CA18 is ran by belt i belieave.

they all controll the cams and crank working with each other..

Is that last part right?
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#14 Old 04-01-2004, 09:06 PM
 
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Belts and chains do the same thing. Chains just last a lot longer and don't stretch.

Funny how my "truck" motor was in more cars than trucks.
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#15 Old 04-01-2004, 09:32 PM
 
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so the ka24de engine already has a chain instead of a belt?
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#16 Old 04-01-2004, 10:30 PM
 
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my timing chain has 206k miles on it and runs good, i need to take off the 2nd tensioner tho cuz its making a lil noise, but there is no play in the chain at all


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#17 Old 04-01-2004, 10:35 PM
 
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Six HOURS? Maybe half that time if you know what you're doing, and I'm hoping since you've got a lift and assuming a full garage (air tools, etc) you know what you're doing.

definitely not half an hour, lol.

S30 was sold
S14 was totalled
'89 Coupe is still alive.
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#18 Old 04-02-2004, 01:20 AM
 
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i have a problem w/ my 240 where whenever i press on the acclerator..i hear like a jingling sound.....could this b the timing chain?
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#19 Old 04-02-2004, 01:12 PM
 
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get liquid gasket and a new front crank seal, also get a old cap and cut a hole where number 1 is, itll make setting up timing alot easier...get a fsm, chilton sucks, its about 1/4 of the actaul fsm copied
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#20 Old 04-02-2004, 01:33 PM
 
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Quote:
Originally Posted by ndnspongebob
so the ka24de engine already has a chain instead of a belt?
the ka24de runs chain yes
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#21 Old 04-20-2004, 10:05 PM
 
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alldata says almost 18 hours to replace it. lol they must have chimps woring on the cars
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#22 Old 04-21-2004, 08:13 AM
 
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shit it took me around 30 hours to take a block with pistons in it and put the head on and timing chain switch all accersories from the motor in the car to the other one and pull the engine and install the new one.
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#23 Old 04-22-2004, 06:51 PM
 
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took me close to 15. pretty easy engine to do.

S30 was sold
S14 was totalled
'89 Coupe is still alive.
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#24 Old 04-23-2004, 03:32 AM
 
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Quote:
Originally Posted by S13lover
Belts and chains do the same thing. Chains just last a lot longer and don't stretch.
correction, belts stretch and then break, chains stretch but never break....unless a foreign object gets caught in the gears. Chains typically jump timing if they get too loose, the gear rotates under the chain causing it to be a tooth off or more. The V8 Mercedes are bad about this.

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Dennis.Mertzanis@DGTrials.com


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