Welcome to the SR20 Community Forum - The Dash.
Results 1 to 36 of 36
  1. #1
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default Timing chain slipped!

    i was parked on a hill and i put it in third so it wouldnt roll, but the car rolled backwards, and jumped back like 5 times... i think the timing belt slipped back because the car doesnt start up it just turns over, would that make sense or what should i do? the car has 240,000 km and idk if it has a new timing belt cuz i just bought the car recently! i want to get it going as soon as possible cuz i need my car for work! let me know what i should do cuz im not sure.. im guessing im just going ot have to take the valve cover off and set the timing again... how long do you think that would take?? :/
    THANKS
    Last edited by Krahn48; 12-06-11 at 02:35 AM.

  2. #2
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    If this is an SR they dont have timing belt. They have chains. Basicly what happened is going backwards in 3rd turned the motor over backwards and yes that could cause the chain to skip if the conditions were right, if it wont restart its probably what happened.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  3. #3
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    yes its an SR and i was just thinking about that after i said it but i wasnt sure if it had a belt or chain. and how long do you think it would take to set the timing chain?

  4. #4
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    For someone that has never done it, probably an hour or so. You will need to put the motor at TDC on the compression stroke. #1 Cam lobes would have been pointing away from each other but depending on how far it skipped they probably wont be pointing anywhere near where they are supposed to. In that case set the motor to TDC, remove the chain tensioner, Put the cam sprocket dowel pin on the exhaust cam at 12 oclock straight up and then from the dot on the gear count 20 chain pins and put the next cam dot after the 20th pin so you have 20 pins between the dots on the gears. The dowel on the intake cam will be pointing to 10 oclock position. Reinstall the tensioner by recompressing it and securing it with the hook, reinstall and then turn the motor over by hand until the tensioner releases, you will hear a click and you can visually look down and see the hook release from the plunger. Rotate two full revolutions on the motor until back at tdc and make sure the dowels come back to the 10 and 12 positions and 20 pins between the dots on the gears. If so then good to go.

    If you have the stock crank pulley the second timing mark from the left is the TDC 0 deg mark. Pretty simple to do.

    You will have to do one of two things, either remove the cam gears from the cam, rotate the cam to where its in position then reinstall the gear positioned right on the chain or remove the cams completely and reinstall them in the right position. If your not afraid to work it and move the crank around to get slack in the chain where needed you can do it without removing the gear or cams just skipping chain over the teeth of the gear while rotating the cam where it needs to be and putting the crank back at TDC. You can do it however you feel comfortable.

    If you do remove the cams or gears there are torque specs on the cam caps and gear bolts that need to be followed. Feel free to use the FSM's on here or get the torque spec from the How To section under Engine Torque Specs
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  5. #5
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    Thanks so much, my torque wrench only goes down to 10 so i dont know if thats low enough and can i get a link to FSM? and this is really going to help alot ill tell you how it goes tomorrow cuz i want to finish doing this all tomorrow! cuz i need my car for work! and how do i know if im in TDC? cuz everything is going ot be screwed up cuz it wont actually be TDC if the valves are timed wrong! i guess ill have to look at it myself and then once i see it i will understand a little more! and if i still have more questions then ill ask them then! Thanks so much glad to have people who know what they are talking about to help me out!

  6. #6
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    and do you think my timing chain is streched?

  7. #7
    Member
    User Info
    Join Date: Nov 2010
    Location: Northeast Florida
    Posts: 947
    Feedback Score: 11 (100%)

    Default

    It's most likely stretched, but all high mileage engine's chains would be. Not significant though, just a bit. If your tensioner is good it will take up that tiny bit of slack. The chain is supposed to last the engine's lifetime. You don't replace them periodically like the rubber belts.

  8. #8
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    Yeah i wouldnt worry about your chain being streched. Thats not the cause of the skippage. Next time your on a hill facing up, put the car in reverse, it will help hold the car as well as the ebrake. And if it does move it will turn the motor over the right way. Last thing you want is the motor to turn in the opposite direction. lol.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  9. #9
    b14+p11=<3
    User Info
    Join Date: Mar 2010
    Location: 209, CA
    Posts: 2,211
    Feedback Score: 3 (100%)

    Default

    Quote Originally Posted by ashtonsser View Post
    Yeah i wouldnt worry about your chain being streched. Thats not the cause of the skippage. Next time your on a hill facing up, put the car in reverse, it will help hold the car as well as the ebrake. And if it does move it will turn the motor over the right way. Last thing you want is the motor to turn in the opposite direction. lol.
    or put the wheel right next to the curb to where it'll barely hit it
    95 200sx SE-R|SR20VE|Custom 3" intake|SSAC Header|2.25in cutout|AFC NEO|DE ECU to 8450rpms|173whp & 138wtq(before cutout)|205/55/15
    92 Sentra SE-R | R.I.P.... Junked as scrap metal... :(
    2000 G20T | 132k miles | stock | Daily

    ASE Certified Technician

  10. #10
    Member
    User Info
    Join Date: Nov 2010
    Location: Northeast Florida
    Posts: 947
    Feedback Score: 11 (100%)

    Default

    Quote Originally Posted by 92SentraSE-R View Post
    or put the wheel right next to the curb to where it'll barely hit it
    Or just fix the damn E-brake already. lol

  11. #11
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    Yeah that too. Pretty easy to adjust
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  12. #12
    Member
    User Info
    Join Date: Nov 2010
    Location: Northeast Florida
    Posts: 947
    Feedback Score: 11 (100%)

    Default

    I think his cable snapped

  13. #13
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    yeah i ordered one lol but they were disscontinued there so i have to order a new one from somewhere else! and yeah i would turn my tire agesnt the curb but there was none, it was a drive way while i was delievering pizza haha it was pretty shitty! but yeah thanks for all the help from all of you, and yes from now on i will put it into the gear it would be rolling! lol pretty fricken stupid on my park oh well thats how we learn i guess

    Part* but Park works to lmao

  14. #14
    b14+p11=<3
    User Info
    Join Date: Mar 2010
    Location: 209, CA
    Posts: 2,211
    Feedback Score: 3 (100%)

    Default

    Quote Originally Posted by Krahn48 View Post
    yeah i ordered one lol but they were disscontinued there so i have to order a new one from somewhere else! and yeah i would turn my tire agesnt the curb but there was none, it was a drive way while i was delievering pizza haha it was pretty shitty! but yeah thanks for all the help from all of you, and yes from now on i will put it into the gear it would be rolling! lol pretty fricken stupid on my park oh well thats how we learn i guess

    Part* but Park works to lmao
    Live and learn! It's how I have most of my mechanical knowledge, from fucking something up by how I drive and then having to fix it LOL
    95 200sx SE-R|SR20VE|Custom 3" intake|SSAC Header|2.25in cutout|AFC NEO|DE ECU to 8450rpms|173whp & 138wtq(before cutout)|205/55/15
    92 Sentra SE-R | R.I.P.... Junked as scrap metal... :(
    2000 G20T | 132k miles | stock | Daily

    ASE Certified Technician

  15. #15
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    the manual i got for my b13 the timing belt looks different! its one complete timing chain??? and the notches arent at 12 oclock and 10 oclock.... ?? ill put pictures up to show you

  16. #16
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    is TDC -5 or 0??

  17. #17
    I heart eggs
    User Info
    Join Date: Feb 2011
    Location: Fort worth, Tx
    Posts: 1,682
    Feedback Score: 15 (100%)

    Default

    0 = tdc

    The SR doesnt use a timing belt, its a timing chain. And yes, it's one single chain.
    Aztec Red- 91 Sentra XE GA16DE
    Aztec Red- 92 NX2K VE Powered Project
    Aztec Red- 92 NX2K Auto Hardtop
    Super Black- 92 NX2K VE powered

  18. #18
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    yeah i know its a chain lol i figured that out already... and i was just wondering what could be wrong if my timing chain is really lose?? and idk how to tighten it??

  19. #19
    Member
    User Info
    Join Date: Nov 2010
    Location: Northeast Florida
    Posts: 947
    Feedback Score: 11 (100%)

    Default

    If your timing chain is loose then it's got to be the timing chain tensioner. It may be bad. Post some pics man. Did you set it to TDC before you looked at the cam positions?

    Here is the tensioner. Took this from my F/S thread. There are 2 different ones. The 1 on the right is the older style, and left is newer. The newer version has a bigger oil hole so it keeps the chain tighter.

  20. #20
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default



    its pretty loose, and i dont know how to tighten the tensioner...

  21. #21
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    You cant tighten the tensioner. When the motor is off there will be some slack on the chain especially when pulling up like that it will easily depress the tensioner. If you have an old style tensioner probably best to upgrade to the new updated style. It seems excessive depending on how much you pulled up on it. When the motor is running oil pressure pushes on the tensioner creating its full tension. Even with the upgraded tensioner you will get slack between the gears as the cam lobes come off the rockers the intake cam will turn forward advancing itself a lot of times and thats why you will have slack in between the gears like that.

    When resetting the timing just turn the cam to remove the slack between the gears and also puts the slack on the tensioner side so you can get the tensioner back in without issues.

    Anyways put it at tdc with the lobes pointing somewhat away from each other if they are still even that close. Then see where your dowel pin locations are at and see if there is 20 pins between the dots on the gears.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  22. #22
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    its always loose even if you dont pull on it! so do you think that it would get tight if i just had it running? or do you thing its wouldnt? cuz i just need it fixed as fast as i can cuz its my daily driver and i need it!

  23. #23
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    You will be fine with your old tensioner and yes it will get tight when its running. The slack between the gears is normal. You could always replace the tensioner down the road during a next oil change or something since you have to remove the filter to get it out anyways on a highport motor. Just put the cams where they need to be with the motor at TDC.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  24. #24
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    Thanks everyone, my car is running like champ!! i would have been lost without you guys!!

  25. #25
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    How many teeth did it skip do you estimate, More than likely it skipped on the crank side of things so the sprockets for the cams probably just needed to be moved back into position. Glad to be of help. Its pretty straight forward job and glad you got it running again.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  26. #26
    Ricer->Driver->Racer
    User Info
    Join Date: Dec 2007
    Location: Mississipi
    Posts: 2,501
    Feedback Score: 3 (100%)

    Default

    Wait so what did you end up doing to fix your problem?

  27. #27
    Member
    User Info
    Join Date: Nov 2010
    Location: Northeast Florida
    Posts: 947
    Feedback Score: 11 (100%)

    Default

    ^^X2

  28. #28
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    Timing chain skipped, realigned cams w/ motor at TDC and put it back together. Not much else to it.
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  29. #29
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    yup thats what i did! and the first time i put it back together with only 19 pins between the dots and it ran super shitty lol so i just skipped it back the exhaust cam one back! and the only thing that was out was the exhaust cam! it was it was out like a half turn! but it all works good now!

    Thanks for all the help

  30. #30
    Ricer->Driver->Racer
    User Info
    Join Date: Dec 2007
    Location: Mississipi
    Posts: 2,501
    Feedback Score: 3 (100%)

    Default

    Oh ok. Cool.

  31. #31
    .........................
    User Info
    Join Date: Aug 2009
    Posts: 4,717
    Feedback Score: 5 (100%)

    Default

    I love happy endings.

  32. #32
    B15 rebuild underway!!
    User Info
    Join Date: Jun 2011
    Posts: 1,548
    Feedback Score: 11 (100%)

    Default

    ^ Wait, where do the happy endings come in? He fixed his car and got a happy ending??

    Good posts in this thread!! Very helpful.

  33. #33
    Member
    User Info
    Join Date: Nov 2008
    Location: Central NJ
    Posts: 8,300
    Feedback Score: 51 (100%)

    Default

    put it in the exhaust while it was running thats how happy he was
    living the dream

  34. #34
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    Quote Originally Posted by B15NEOVVL View Post
    ^ Wait, where do the happy endings come in? He fixed his car and got a happy ending??

    Good posts in this thread!! Very helpful.
    Agreed very good posts in this thread.. altho the title should be Timing "Chain" slipped but im a dumb ass haha but it was a happy ending, fixed car equals happy ending and i didnt touch the exhaust... i wasnt quite that happy.. and plus the car has a damn fart can, it had it on there when i bought the car but i might be all over the exhaust once i do a cat back!!

  35. #35
    SR20VETeran
    User Info
    Join Date: Dec 2007
    Location: Copperas Cove, Tx
    Posts: 9,349
    Feedback Score: 13 (100%)

    Default

    You can change the title in the edit...Go Advanced option
    1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
    JMS Racing tuned to 716whp, 423wtq at 29psi
    10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!

  36. #36
    NX2000
    User Info
    Join Date: Nov 2011
    Location: Manitoba Canada
    Posts: 95
    Feedback Score: 0

    Default

    now know one will know, well they will if they read the whole thing but now i dont look like a complete dumb ass!

 

 

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Back to top