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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
Waiex191
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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.

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'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
Waiex191
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1998 SC2
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
Waiex191
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Default Re: Frankenstein's engine

Check the swap guide. I'm not sure!
http://www.saturnfans.com/forums/showthread.php?t=88699

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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 10-15-2019, 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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