Is a 1997 Saturn sl2 an interference engine?
yes, all the Saturn DOHC motors are interference engines.
No such thing as a timing chain belt. It is either a belt or chain. Replace the belt according to the schedule in your owner's manual. If it breaks and your engine is an interference engine, you will 95% of the time have damage. You will know the extent of the damage when the engine is torn down. The 1992 SL2 has a timing chain. Mine has 240,000 miles on it and is still running…
Follow the top radiator hose to the engine, what that mounts to is the thermostat housing, remove this and there is your thermostat. * ** *** **** ***** Actually, on my 1997 SL2, the thermostat is on the bottom radiator hose. I would check the "Saturn Thermostat Pictures" link below, which also has installation and removal instructions.
Yes, but is may require the use of the intake and exhaust manifolds from your 1997 engine. The headers to be reused will need to be milled flat by a machine shop to ensure they are flat and will seal properly. I have a 1994 SC2 running a 1998 DOHC engine from a wrecked SL2, runs like a champ, but I did have to reuse my 1994 manifolds. Good Luck
My son's 1999 Salvaged/total Saturn SL1 was rebuilt using many engine and body parts from 1995-1999 Saturn SL1 and SL2 cars, I believe it will work fine. I do not recommend before 1995 or 2000 or later models. I do not recommend SL2 either. I am not the expert but most of my son's engine is not 1999 SL1. Good luck!