ka24de knocking

Information on the naturally-aspirated KA24E and KA24DE engines.
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Riubens
Posts: 364
Joined: Wed Jun 01, 2005 1:38 pm
Car: ka-t 240 and 99 Q45 t

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ok guys my engine started making a nasty noise which is driving me crazy!!! I just cant pin point what or where is the noise coming from! so here's the vid of my car making the noise

http://s129.photobucket.com/al...6.flv

so what you guys think it is?? do I need a new engine cause I have money in hand and will probably buy this week!

before I go ka-t next month.


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Riubens
Posts: 364
Joined: Wed Jun 01, 2005 1:38 pm
Car: ka-t 240 and 99 Q45 t

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anybody??

TheOne
Posts: 1836
Joined: Mon Aug 09, 2004 4:28 pm
Car: 93 240sx FB
Location: Arlington, TX

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sounds like a spun bearing, you should be able to hear it between 2.5k-3.5k rpm, or maybe its just low on oil.

nzmoman
Posts: 2302
Joined: Mon May 22, 2006 2:27 pm
Car: 240sx 2 of em' and always lookin for more

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if you can get a new engine I would do that now and rebuild it for the project. Even with the noise your car is making if it can last for a while then you can get the other motor installed. then you can break it open and check it out.

if you really want to know what it is get a long tube or pipe put it to your ear and move the other side around the block. you will find the sound and know where its coming from. I think it sounds like a really off timing chain, but its hard to say. you have to pin point where its coming from to know.

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Riubens
Posts: 364
Joined: Wed Jun 01, 2005 1:38 pm
Car: ka-t 240 and 99 Q45 t

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the sound started a month after the 248/232 cam install I did pull the valve cover off last week and notice the intake cam was a little off when ever I would set the engine at TDC but I didn't make much of it because my car is and was running very strong, and I thought that if the chain would of skipped a tooth I would lose all the power and the engine would run rough so I ruled it out.

still open for sum more suggestions.

tomorrow I will retard the cam(intake) 1 tooth to see if that could be my problem.

TheOne
Posts: 1836
Joined: Mon Aug 09, 2004 4:28 pm
Car: 93 240sx FB
Location: Arlington, TX

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checked the oil? if you still have the undercarriage cover you prolly can't notice that the engine might be leakin oil and so you could be low, just 1 of those things to rule out.(happened to a friend, he didn't know the engine was leakin oil cause it was bein trapped by the cover, later on the engine got rod knock due to bein starved of oil)

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Riubens
Posts: 364
Joined: Wed Jun 01, 2005 1:38 pm
Car: ka-t 240 and 99 Q45 t

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ive checked and it has oil in the engine,even though it does leak I was not able change my cam due to the rain we have been having here in alabama.

[email protected]
Posts: 1
Joined: Tue Jan 23, 2007 7:57 am
Car: 1991 Nissan 240SX

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My engine had a similar knock that developed after a friend of mine driving my car got it in 3rd gear from the top of 4th gear. The engine reved high fast and violent. A few months later of just turning it on driving down the block to keep anything from siezing up the engine locked up and has done nothing since. I would take that knock very serious if I was you.

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Riubens
Posts: 364
Joined: Wed Jun 01, 2005 1:38 pm
Car: ka-t 240 and 99 Q45 t

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will do am going to buy a new used ka tomorow,I though my cam was off by one tooth which it was and I fixed it and now its much much worst it does it during idle now,which is good because I have all the stuff to put inn my t25 this week too.

killablue240
Posts: 581
Joined: Wed Apr 06, 2005 11:50 am
Car: sr powered s13 coupe, 1991 twin turbo 300zx

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sounds like a rod bearing, main bearings are usually more solid sounding.


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