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SO, im gonna look at a 01 sl2 for sale. Its $200 with 130,000 miles. I was told the timing chain is broken on it. Im pretty sure this is an interferance fit motor. This would mean that also the head more than likely suffered damage and should be replaced. Would i be correct on this? Would it be likely that the pistons are also shot from hitting the valves? DOnt know if it would be worth my time and effort to fix it.
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Yes it is an interferance motor there is the possibility that only replacing the bent valves is possible. You'd have to look closely at the guides to make sure they are not damaged. If so they can also be replaced.Kind of a judgement call.Meaning if all the valves are bent then the motor was at a higher rpm when it let go and probably would junk the head, if only one or two are bent you could probably save it. Now there is also the chance that there is piston damage.A couple marks isn't a big deal so long as there are no cracks. Hey for $200 cant lose if the rest is at least decent.

 

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yea, thanks for the reply. Im gonna take my chances i think and pick it up. I figure if worst comes to worst, i could replace the pistons also. i shouldnt have a hard time finding a head even from a junkyard for pretty cheap. i would just swap the head rather than replace the vales.
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You probably wont need to replace the pistons. If you can get a head for cheap, then go the route. It will be cheaper than purchasing new valves. Just make sure you buy new head bolts and follow the tightening sequences.

Oh yeah, only a 1999-2002 DOHC head will work on your car.

 

NOT TORQUE TO YEILD HEAD BOLTS THEY CAN BE REUSED DONE IT HUNDREDS OF TIME WITHOUT A PROBLEM

 

NO!!!!!!!! DO NOT REUSE THE HEAD BOLTS!!!! They are torque to yield!!!!!

Copied and pasted from the Saturn Factory Service manual:

"Whenever a cylinder block or head bolts are replaced, install the cylinder head and torque the bolts to 65 N·m (48 lbs ft). Next, remove the bolts, coat the threads with engine oil and follow the torque angle procedure steps. Torquing the bolts one time prior to following the torque angle steps insures proper clamp load is achieved."


At $1.72 each ($17.20 for the set) It would be extremely unwise and foolish to reuse the old head bolts.