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Old 10-15-2018, 03:41 PM   #1
onlinebiker
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Default 98 to 99 swap

I'm going to look at another 99 SC2 tomorrow - that has a lunched auto transmission.


I have a good transmission in a 98 SC2 parts car.

That a direct swap? Looked at the swap guide, and still not sure....

...
92 SC2
93 SC2
93 SW2
97 SL2
97 SC2
99 SC2
02 SC2
02 SL2

parts
2 94 SC2 parted out
3 96 SC2
98 SC2 - rusty frame minus engine.

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Old 10-16-2018, 02:57 PM   #2
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Default Re: 98 to 99 swap

Anybody?

...
92 SC2
93 SC2
93 SW2
97 SL2
97 SC2
99 SC2
02 SC2
02 SL2

parts
2 94 SC2 parted out
3 96 SC2
98 SC2 - rusty frame minus engine.

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Old 10-16-2018, 03:10 PM   #3
alordofchaos
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2002 SC2
1998 SL2
Default Re: 98 to 99 swap

Was hoping someone else would jump in (I have no experience). But it should be a straight swap.

You can keep the '99 auto PCM but that will keep the SES light on full time, with transmission codes. One person mentioned they could feel slight dips in power roughly where an auto trans would be shifting, but then it would pick right back up

Or you can move the PCM over with the trans, just check the options between the two cars.

Transmissions didn't really change much throughout the S series life cycle. Some gearing changes is all I can think of

...
I'm not worthy to grovel in the shadow of Signmaster's wisdom

11/2016 red 2002 5 spd SC2 124k DD
7/2010 Craigslist white 1997 SC2 project
12/2008 eBay silver 1998 SL2 5 spd 102k, now 201k+ miles

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Old 10-16-2018, 04:48 PM   #4
onlinebiker
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Default Re: 98 to 99 swap

Thanks ALOC...

It' s nice going into a project knowing there critical stuff....


...
92 SC2
93 SC2
93 SW2
97 SL2
97 SC2
99 SC2
02 SC2
02 SL2

parts
2 94 SC2 parted out
3 96 SC2
98 SC2 - rusty frame minus engine.

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Old 10-16-2018, 04:55 PM   #5
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2002 SC2
1998 SL2
Default Re: 98 to 99 swap

You're welcome! I'm sure you have already seen this
http://www.differentracing.com/tech_...anny_swap.html

Oh, and that reminds me, there is a few different things you do with the plugs depending on if you are using the auto or manual pcm
http://www.saturnfans.com/forums/sho...d.php?t=153772

...
I'm not worthy to grovel in the shadow of Signmaster's wisdom

11/2016 red 2002 5 spd SC2 124k DD
7/2010 Craigslist white 1997 SC2 project
12/2008 eBay silver 1998 SL2 5 spd 102k, now 201k+ miles

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Old 10-17-2018, 12:46 AM   #6
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2001 SC2
Default Re: 98 to 99 swap

If they both are automatic and the same DOHC or SOHC transmission than it should be a direct no-issue swap. Going from MP7 to MP6 or MP6 to MP7 won't work at all; going from auto->manual requires a PCM swap for it to be totally happy (most report no issues other than CEL; others have my luck and get a slight hesitation when the PCM cuts timing to shift).

...
The proper way to fix a S-Series automatic is to replace it with a 5spd O:)

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Old 10-17-2018, 06:32 AM   #7
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1999 SL2
1998 SC2
Default Re: 98 to 99 swap

The proper way to fix a S-Series automatic is to replace it with a 5spd O

...
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 10-17-2018, 09:10 AM   #8
onlinebiker
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Default Re: 98 to 99 swap

That was 2 hours of driving wasted.

While texting the seller I asked if the underbody was solid, and he said yes.


I suppose - it wasn' t liquid.

But it did have rust thru.

I suspect he knew - as my SO watched his face when I pulled the inspection mirror out of our trunk, walked over to his car - and checked forward of the driver's side rear wheel - and immediately found rust thru at the trailing arm mount. She said his face fell....

So 10 seconds into my inspection - I said " I'll pass".

...
92 SC2
93 SC2
93 SW2
97 SL2
97 SC2
99 SC2
02 SC2
02 SL2

parts
2 94 SC2 parted out
3 96 SC2
98 SC2 - rusty frame minus engine.

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Old 10-17-2018, 09:16 AM   #9
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Default Re: 98 to 99 swap

Our 92 SC2 needs a new engine ( top end ) but the body is exceedingly clean. Even the paint ( white) is nice. The problem is - it' s an automatic transmission.


I have all the parts - so I probably will convert it to a manual.

So thank in advance for all the good info guys.


...
92 SC2
93 SC2
93 SW2
97 SL2
97 SC2
99 SC2
02 SC2
02 SL2

parts
2 94 SC2 parted out
3 96 SC2
98 SC2 - rusty frame minus engine.

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Old 10-17-2018, 10:42 AM   #10
alordofchaos
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2002 SC2
1998 SL2
Default Re: 98 to 99 swap

Would be awesome to see a clean '92 SC on the road again!

...
I'm not worthy to grovel in the shadow of Signmaster's wisdom

11/2016 red 2002 5 spd SC2 124k DD
7/2010 Craigslist white 1997 SC2 project
12/2008 eBay silver 1998 SL2 5 spd 102k, now 201k+ miles

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Old 10-17-2018, 12:44 PM   #11
cgg17
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Default Re: 98 to 99 swap

Quote:
Originally Posted by onlinebiker View Post
Our 92 SC2 needs a new engine ( top end ) but the body is exceedingly clean. Even the paint ( white) is nice. The problem is - it' s an automatic transmission.


I have all the parts - so I probably will convert it to a manual.

So thank in advance for all the good info guys.

I did the swap, took me 14 hours as a first timer without a lift. Would probably be easier to drop the whole powertrain instead of the subframe and trans like I did.

...
1994 Sl2 5spd: 56,576 (Totaled 1/10/2018)
1995 Sl2 5spd Manual Swap: 150,062
1999 Sl2 4spd: 98,8xx

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