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Old 10-14-2019, 12:31 PM   #1
ilea
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1997 SW2
Default Frankenstein's engine

I have a 99a ( no air injection) dohc engine with a bad block in my sw2 but good head and a 98 sc2 dohc engine with a cracked head (someone tapped the oil galley when replacing the a/c).

Can I slap the 99a head on the 98 block and call it a day or are the internals different? What about pcms/sensors? I wanted to do it the proper way and completely rebuild both the engines but I need a working car like yesterday, I'm in a bad situation and I'm kinda broke (obviously have enough cash for gaskets and a timing set).

Thanks in advance
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Old 10-14-2019, 01:04 PM   #2
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1999 SL2
1998 SC2
Default Re: Frankenstein's engine

You have to keep the '99 valve cover. Possibly the intake and exhaust manifolds as well. Seems like it should work otherwise. I've got a 99 that I've rebuilt and a 98 that I haven't. Head bolts are torque to yield, so you need new ones. Not sure if the timing set is mandatory, depends on the condition. I'd replace it but if I was in a budget crunch and planned a rebuild later I'd skip it.
...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018
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Old 10-14-2019, 01:13 PM   #3
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Default Re: Frankenstein's engine

Check out the swap guide sticky at the top of the S-Series Tech forum. Confirms what I said.
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Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018
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Old 10-14-2019, 01:21 PM   #4
ilea
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1997 SW2
Default Re: Frankenstein's engine

Thank you.
What about the timing cover? Are they all the same?
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Old 10-14-2019, 07:17 PM   #5
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1998 SC2
Default Re: Frankenstein's engine

Check the swap guide. I'm not sure!
http://www.saturnfans.com/forums/showthread.php?t=88699
...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018
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Old 10-15-2019, 09:24 AM   #6
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2001 SC2
Default Re: Frankenstein's engine

Timing cover to match the head.
Timing set to match the head.
Intake/exhaust manifolds to match the head.
Keep the wire harness in the recipient car.
TTY head bolts can be reused but it's safer to get new ones.
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