help with timing chain jumping out of place? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

InNam · 01-18-2009, 01:29 AM

my upper and lower timing chain have both seem to jump a few teeth out of its place due to a faulty tensioner. the only problem now is that nothing its lined up. so i don't know where to start to position the lower timing chain. is there any way to find out if the engine is on compression stroke without anything attach (timing chains, etc) except the harmonic balancer. i would appreciate it if anyone with experience would give a some answers.

240tuned91 · 01-18-2009, 08:38 PM

what motor? and pull the 1st spark plug and put a comppresion tester on it. when u see pressure building keepy turning the crank till its on your tdc mark whatever motor you have. then that piston is tdc. then make ur own marks using a marker

InNam · 01-19-2009, 12:51 PM

its a ka24de. anyone got anymore info please?

importdude · 01-19-2009, 01:24 PM

use your dipstick
when its at the upmost positition thats tdc

*slider2828* · 01-19-2009, 01:57 PM

I did this on an SR. I basically cranked the change without the tensioner and obviously it jumped... BUT it doesn't jump as much as you thinkg.... Usually the the cam that the tensioner is closests to jumps, the other side won't because of the crank pulley putting tension on that side.

I believe the tensioner is on the intake side? I dunno not a KA guy, but start with that side getting the right links between.... I think that works best, it did on mine.

InNam · 01-20-2009, 12:21 AM

ok thanks guys for the help. so i tried and got the cam lobes on cylinder 1 facing away from each other. and put the chain and tensioner back on while the crank pulley was set at tdc. so after putting everything together i try to crank the engine from the front pulley and it turns maybe a quarter of a turn and it locks. lol. im so confused. i even tried to remove the chain again and bring it back to tdc another 360 degrees and still the same problem. anything?? some help would be appreciated. thank you

nightshiftgarage · 01-20-2009, 01:52 AM

if its the oem timing chains they will have dark links that will line up with marks on the the crankshaft,jackshaft,and cam gears.its not difficult to do . do u have the front cover removed ?

*slider2828* · 01-20-2009, 09:31 AM

It locks... Its normal.... Dun worry about it

InNam · 01-20-2009, 06:14 PM

oh shit i found the problem. the marks on the crank pulley are not corrresponding with the cylinders. when piston #1 is on compression stroke,the marks on the crank pulley are no where near the pin. how can this be? i thought the pulley was fixed with the crankshaft?????? any smart people out there that can help?

240tuned91 · 01-21-2009, 08:19 AM

did u put your cracnk pulley on wrong. I dont think thats even possibly cause the of the keyway in the crankshaft. pictures would get your answer fast

*slider2828* · 01-21-2009, 09:24 AM

It is NOT fixed... god read some tech posts about this stuff.. I sometimes takes a LOT of revolutions to get everything to line up.... It is NOT FIXED.

InNam · 01-21-2009, 11:52 PM

Geeze i dunno. Imma double check the crank pulley :/

01-19-2009, 01:57 PM	#5
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	I did this on an SR. I basically cranked the change without the tensioner and obviously it jumped... BUT it doesn't jump as much as you thinkg.... Usually the the cam that the tensioner is closests to jumps, the other side won't because of the crank pulley putting tension on that side. I believe the tensioner is on the intake side? I dunno not a KA guy, but start with that side getting the right links between.... I think that works best, it did on mine. __________________ Turn and Burn!

01-20-2009, 01:52 AM	#7
nightshiftgarage Zilvia Member Join Date: Sep 2006 Location: tn Age: 37 Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	if its the oem timing chains they will have dark links that will line up with marks on the the crankshaft,jackshaft,and cam gears.its not difficult to do . do u have the front cover removed ? __________________ "NIGHTSHIFT-GARAGE"

01-20-2009, 09:31 AM	#8
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	It locks... Its normal.... Dun worry about it __________________ Turn and Burn!

01-21-2009, 09:24 AM	#11
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	It is NOT fixed... god read some tech posts about this stuff.. I sometimes takes a LOT of revolutions to get everything to line up.... It is NOT FIXED. __________________ Turn and Burn!

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01-18-2009, 01:29 AM	#1
InNam Leaky Injector Join Date: Oct 2008 Location: South Cali Posts: 55 Trader Rating: (-1) Feedback Score: -1 reviews	help with timing chain jumping out of place? my upper and lower timing chain have both seem to jump a few teeth out of its place due to a faulty tensioner. the only problem now is that nothing its lined up. so i don't know where to start to position the lower timing chain. is there any way to find out if the engine is on compression stroke without anything attach (timing chains, etc) except the harmonic balancer. i would appreciate it if anyone with experience would give a some answers.

01-18-2009, 08:38 PM	#2
240tuned91 Zilvia Member Join Date: Jan 2009 Location: nj Age: 30 Posts: 219 Trader Rating: (3) Feedback Score: 3 reviews	what motor? and pull the 1st spark plug and put a comppresion tester on it. when u see pressure building keepy turning the crank till its on your tdc mark whatever motor you have. then that piston is tdc. then make ur own marks using a marker

01-19-2009, 12:51 PM	#3
InNam Leaky Injector Join Date: Oct 2008 Location: South Cali Posts: 55 Trader Rating: (-1) Feedback Score: -1 reviews	its a ka24de. anyone got anymore info please?

01-19-2009, 01:24 PM	#4
importdude Zilvia FREAK! Join Date: Nov 2006 Location: san j0 Posts: 1,381 Trader Rating: (19) Feedback Score: 19 reviews	use your dipstick when its at the upmost positition thats tdc

01-20-2009, 12:21 AM	#6
InNam Leaky Injector Join Date: Oct 2008 Location: South Cali Posts: 55 Trader Rating: (-1) Feedback Score: -1 reviews	ok thanks guys for the help. so i tried and got the cam lobes on cylinder 1 facing away from each other. and put the chain and tensioner back on while the crank pulley was set at tdc. so after putting everything together i try to crank the engine from the front pulley and it turns maybe a quarter of a turn and it locks. lol. im so confused. i even tried to remove the chain again and bring it back to tdc another 360 degrees and still the same problem. anything?? some help would be appreciated. thank you

01-20-2009, 06:14 PM	#9
InNam Leaky Injector Join Date: Oct 2008 Location: South Cali Posts: 55 Trader Rating: (-1) Feedback Score: -1 reviews	oh shit i found the problem. the marks on the crank pulley are not corrresponding with the cylinders. when piston #1 is on compression stroke,the marks on the crank pulley are no where near the pin. how can this be? i thought the pulley was fixed with the crankshaft?????? any smart people out there that can help?

01-21-2009, 08:19 AM	#10
240tuned91 Zilvia Member Join Date: Jan 2009 Location: nj Age: 30 Posts: 219 Trader Rating: (3) Feedback Score: 3 reviews	did u put your cracnk pulley on wrong. I dont think thats even possibly cause the of the keyway in the crankshaft. pictures would get your answer fast

01-21-2009, 11:52 PM	#12
InNam Leaky Injector Join Date: Oct 2008 Location: South Cali Posts: 55 Trader Rating: (-1) Feedback Score: -1 reviews	Geeze i dunno. Imma double check the crank pulley :/