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Unread 03-22-2014, 10:25 AM   #1
syphonation
Registered User
1982 CJ8 
 
Join Date: Aug 2008
Location: , Kentucky
Posts: 175
258 vs 258?

hey guys, i have a quick question. i recently bought an 82 scrambler, and it came with an extra motor. the seller knew nothing about whether it ran or not, and i haven't had time to really investigate. however, the motor that's currently installed is ticking pretty bad. i figure either a valve sticking or a rocker arm.

upon closer inspection, the "extra" motor appears to be the original to the scrambler, as the motor that's in it is older. i'm just wondering if there's a way to pinpoint what year this motor was built - or were the 258's back then all interchangable in terms of internal parts?

i'm hoping i can use the donor motor for parts if i need them, but in the instance it's no good and i have to buy something, i'm going to be in a bind not knowing what year cj my motor came from.

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Unread 03-23-2014, 12:06 PM   #2
strvger01
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1966 CJ5 
 
Join Date: Oct 2012
Location: Two Harbors, Minnesota
Posts: 1,106
engine casting number on the block is one way you can find out. as far as i know, internals should be interchangeable, unless one of them has had some work done inside, ie: rebuilt and bored out, non-stock cam, etc.
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