NA Motor Discussions regarding N/A KA24E, KA24DE, and SR20DE

What year is my motor?

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Old Apr 19, 2008 | 10:17 PM
  #1  
t-rex001's Avatar
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What year is my motor?

I bought a 1990 240sx. The guy I bought it from got it out of the junkyard. I know from the vin it is a 1990. Now the weird part is that it has a ka24de in it. I also own a 1991 240sx with the original motor in it. I noticed that the valve covers are different, making me think the motor in the '90 is from a 1994-1999 (s14) 240sx. Does anybody know of a way I can tell for sure what year the motor is.
Old Apr 19, 2008 | 11:10 PM
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How are the valve covers different? They shouldn't be.
Old Apr 20, 2008 | 05:29 AM
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'91 to '94 Valve cover gasket.

Notice it has 3 center bolts next to the spark plug holes.

'95 to '99 Valve cover gasket.

Notice it only has 2 center bolt holes next to the spark plug holes, but the rear of the perimeter gasket has a third hole between the end humps.
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