timing chain problem

Information on the naturally-aspirated KA24E and KA24DE engines.
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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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Ok so i just bought another 240 as my project and its having timing issues...runs like *** unless i retard the timing at the distributer all the way then it will be able to run...not the greatest but it runs....so i figured the cam timing was off....so i take off the upper chain cover and valve cover and look at the cam relation to the chain and the idler sprocket....and im soooo confused....with the crank at what i thought was TDC the front cam lobes seem to be off by one tooth on the intake cam....then i look at the idler sprocket and the notch on it is almost straight up and down!!! that doesnt make any sense to me....so i rotated the crank one more revolution and now the idler sprocket seems to be in the right spot for TDC but the cams are way off where they should be now and the front lobes are pointed almost directly inward now!!! any suggestions? could the cams be 180 degrees off?? or is the crank?

help plz!!!


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Rekless KA
Posts: 158
Joined: Mon Jun 12, 2006 2:19 pm
Car: 96 240sx

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haha, seems like close to my problem right now, but mine doesnt run yet. check the cams, take off the chain and realighn to what is correct, then if that doesnt do anything its most likely the crank, which is super wierd cuz i dont know how that would happen!

my car started today, but wouldnt keep running at 200 rpm's haha. so i checked cylinder one for compression and the needle barely moves! so idk what to do about that one!

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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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i got it to work tho man....the distributor was off a few degrees....runs like a champ now


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