Well after a lot of tinkering around and finally getting my
sons car running what I thought was decent, and other than having a
timing chain noise it seems like he has managed to blow it up somehow.
He siad it s knocking really bad, and blew a heater hose off. Strange,
the 5 days I played with it the temp never got over midway, and it did
not smoke or make any noise other than timing chain. The coolant
sensor fixed the poor fuel consumption and rich running and hard
starting, and I figured it was running fine. I have to say he is not
known to be a hot rodder, and just needs basic transportation to and
from work, as its his lifes blood so to speak, but is it possible this
engine just decided to give up the ghost without being abused.

Motor had 131,000 on it, 1990 240SX, 12 valve SOHC, 5spd manual.
Whats a good price on a used motor? Is there any other years or sizes
that will interchange? Are they worth rebuilding? Expense? No decent
automotive machine shops exist around here, and used Ja[p parts are
hard to come by. Located in central Alabama

Is it possible that the chain just jumped timing, as he says it will
start, but won't run over 30 and its knocking pretty bad. Won;'t get
to actually see it or see what could be wrong until next week so he is
basically back to wearing his sneakers out again.

Thanks for any info
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Regards
Roy aka Chipmaker // Foxeye
Opinions are strictly those of my wife....I have had no input whatsoever.
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In article <36v5ivciadq70g96ba36uhakhahj2m9uc2 (AT) 4ax (DOT) com>,
foxeye (AT) earthlink (DOT) net wrote:

problem? If there is no problem in that side (top of cylinders/valves),
perhaps you have a bad rod; the sooner you replace it (some engines may
let you do that without major tearing apart besides becoming headless and
taking oil pan off), the greater the chances the engine will be happy
after that.

get and engine for under $200. There are places online that sell used
engines, but they can go from $400 to $2K depending on condition and
origin (EX: a JDM engine would cost more if it is one of the hot ones).
Whether they are worth rebuilding, it really depends on you. The 240sx
has a lot of potential (as in making it a hot rod) if you want to put
money on it. For different cars I went both ways for different reasons.
You may want to check out the mk2 yahoo group. Yes, it cater for Mk2
Supras but the blokes there seem to know any junkyard worth mentioning and
could probably recommend you a shop close to you.

Incidentally, there is a 240sx in the local yard, but that would be in FL.


--
Mauricio raubvogel-yahoo-com
(if you need to email me, use this address =)