ARGH.

The Internet's ONLY forum for 240sx convertible information and the official home of the 240sx Convertible Club of America!
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krash
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sooo, I got my exhaust in and changed the oil this weekend. I was feeling all good, and then I started it, and then I heard it. It sure does sound like a rod knock... I guess the exhaust was just too loud for me to hear it this whole time. As soon as you start it, it knocks for a couple seconds. Then when you rev it from maybe 1.5k to 2k it knocks.... And what really sucks is, no one is hiring me, so, who knows when I'll have enough money to do anything. The good news is that nothing is locked up, so I still have the option to change the bearings, which is my main glimmer of hope right now.

THIS SUCKS.


Nategreat923
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Hope for the best, expect the worst =[

Sorry to hear about that.

240RB1
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sorry to hear about that. i had that happen to my "26,000" mile motor it had a knock at 2-redline lol but was a light knock almost like a tick so i decided to buy new bearings about 30 bucks and started to change em. the plan was to not pull the motor and replace them in the car but after removing the pan in the car and saw/experienced the hassle of getting it out i ended up pullin the whole motor transmission and replacing them that way. knock has not returned s on wood: its been around 2-3monthsGoodluck hope for the best

jamesblonde82
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Can't be a rod knock can it, they are overhead cams. Oh hello everyone!

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krash
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!240RB! wrote: the plan was to not pull the motor and replace them in the car but after removing the pan in the car and saw/experienced the hassle of getting it out i ended up pullin the whole motor transmission and replacing them that way.
What was so hard about doing it from the pan? thats what I was planning on doing

James, Where ya been?!

Logan76
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jamesblonde82 wrote:Can't be a rod knock can it, they are overhead cams. Oh hello everyone!
Just because its a DOHC motor does'nt mean it can't have rod knock. What weight oil do you run? just out of curiosity.

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krash
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I use 10W-30

jamesblonde82
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krash wrote:
James, Where ya been?!
ive been really busy with school, and my car has been running so perfectly for the last year im happy with my vert. although i do notice a bit of smoke when it idles for a bit and hit the gas now, no loss of power or anything to be concerned about though and no smoke any other times. just showin its 224k miles i suppose.

jamesblonde82
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Logan76 wrote:
Just because its a DOHC motor does'nt mean it can't have rod knock. What weight oil do you run? just out of curiosity.
what else could be knocking if its not push rods? the piston arms? krash you did remove the chain guard right?

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krash
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well, the chain guard didn't need to be removed yet. Oh, by rod I meant the thing in your avatar hahah

jamesblonde82
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krash wrote:well, the chain guard didn't need to be removed yet. Oh, by rod I meant the thing in your avatar hahah
ahhhh, that could be all that is wrong with it. (chain guard) it took me 3 seconds to remove mine haha... well it would have if i didnt feel like i also wanted to replace both tensioners for added caution.

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krash
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oh how I wish you were right.... you might be actually, I dunno, how loud is the sound from the timing chain?

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Eikon
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krash, The good news is that you'll be able to find a used KA for like $300. No point in messing around much with it... just swap a new engine in. Then you can part out your old motor and make back at least half of what you spent. That's the nicest thing about our cars... Cheap replacement motors!!!

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krash
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yea thats what I was thinking about doing. no one local is selling their motor though, I'll just have to sit on it. Better late than never I guess

jamesblonde82
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krash wrote:oh how I wish you were right.... you might be actually, I dunno, how loud is the sound from the timing chain?
on both my verts is was loud as ish. so loud i used it to work me out a nice deal. it really does sound like there something seriously wrong with it. it only takes 15 mins to take the guard off, its worth a shot. also you can get a mechaninc's stethescope and touch it to the front upper part of the motor where the valve covers meets the part if bolts onto and it its loudest there then i beleive thats your problem

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krash
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I'll check it out! thanks alot man

240RB1
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Sorry for the late reply man i havent checked the vert forum in a while.
krash wrote:
What was so hard about doing it from the pan? thats what I was planning on doing

James, Where ya been?!
the hard part about replacing them in the car is that when you lift the motor as much as possible without crushin/kinking various lines you still have to work around the front crossmember and the front swaybar. getting the pan out is a little hard to putting the pan back with a fresh bead of silicon would be very hard to not smear the bead allover casuing a bad seal.as far as the bearings go the first two rods are somewhat simple but when you get towards the 3+4 rods they are hovering over the crossmember so not much room there. It can be done i have a friend who accomplished it as well as other peeps on this forum but i would rather much pull the motor and make sure all is well. or get another motor:) good luck with whichever way you go.

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krash
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ahhh I see. Thanks for the info. I picked up a new KA though so I'm good


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