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Old 03-17-2015, 02:15 PM   #1
JayRAudetteJr
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1998 SW1
Dizzy Yay, another engine swap...

H'dy all,

98 SW1. 230K/mi. apx 1 qt oil every 1k/mi
Would like the twin cam. Would like the SC trans.
So, after reading swap threads here...questions are...

If I want to go twin, based on mileage... headswap or engine swap?

Should I source a "new as possible" twincam and trans, or build from ground up using "best possible" components? ie: x-year block, y-year intake, other year exhaust man, another year TB, etc.

Would I be better off finding an entire manual SC2 front end and swapping the whole thing from the wheels to the firewall? Say a 2002 SC2.

Using same 3rd gen SC2, can I swap the quarters, hood, and bumper assy onto my SW2?

End of Dumb Questions.
Advice? Suggestions? Links to other threads?

-Planned mods: All disc, SC seats, engine/trans swap, others as I read and steal.

Thanks to everyone here, y'all have saved me time, money, busted knuckles, and blood pressure meds.

...
-Jay-

1998 SW1. No Mods (yet). 180K/mi Purch: 11/19/2013

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Old 03-17-2015, 02:35 PM   #2
SC2Sick
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1997 SC2
1995 SW2
Default Re: Yay, another engine swap...

The body doesn't swap.

With that many miles I'd look for a newer engine. Avoid the 00-02 if you can as the intake manifold/TB setup aren't a direct fit.

The coupes don't have a special transmission.. it's MP2 (SOHC) or MP3 (DOHC)

...
sixthsphere.com owner
1997 Saturn SC2 Turbo
sixthsphere.com/showthread.php/89737

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Old 03-18-2015, 01:48 PM   #3
alordofchaos
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1998 SL2
1997 SL2
Default Re: Yay, another engine swap...

http://www.differentracing.com/tech_...dohc_swap.html

...
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 03-20-2015, 01:07 AM   #4
Chub
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1995 SC2
Default Re: Yay, another engine swap...

Quote:
Originally Posted by SC2Sick View Post
The body doesn't swap.
This statement is not completely true. With enough hard work, anything will swap. I remember seeing two of them that were made. However, I can only find the picture of one and I don't have any more information about it. I think this one was made in 2005 / 6. I think it came out looking pretty good but I am sure it took extensive modification.
Attached Images
File Type: jpg 3786SCW2.JPG (76.0 KB, 37 views)

...
1995 SC2: Back on the road again after my second engine rebuild in two years.

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Old 03-20-2015, 08:36 AM   #5
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2001 SC2
Default Re: Yay, another engine swap...

Quote:
Originally Posted by Chub View Post
This statement is not completely true. With enough hard work, anything will swap. I remember seeing two of them that were made. However, I can only find the picture of one and I don't have any more information about it. I think this one was made in 2005 / 6. I think it came out looking pretty good but I am sure it took extensive modification.
That's not Coppertops Wagon (the only guy to actually do the swap), just a wishful thinking photoshop. This is Coppertops Wagon: http://sixthsphere.com/showthread.ph...en-wagon/page3

If you're not making the same mods he did, you're not trying hard enough
That was probably the best handling S-Series ever...

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

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Old 03-20-2015, 10:44 AM   #6
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1996 SW2
Default Re: Yay, another engine swap...

^^^^^ Link produces an error message.

To your first question, Engine swap is waaaay more straightforward; head swap would only be warranted if there were some other reason to break into the internals.

Whatever you try with the panel swap, it would be completely independent of the powertrain swap. There is no "complete front end"; the powertrain sits on the cradle, and the body parts bolt onto the spaceframe, which is effectively one welded unit.

+1 on the tranny; there are four trannies, two automatics and two manuals. Designated by engine type, not body. There's really nothing different wrt performance between the body styles. The wagons were shipped with slightly different rear springs, which people have lately discovered to be a more desirable spring to use in the coupes/sedans. But for your powertrain swap project, you're not limited wrt. body.

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Old 03-20-2015, 11:45 AM   #7
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2001 SC2
Default Re: Yay, another engine swap...

Quote:
Originally Posted by madpogue View Post
^^^^^ Link produces an error message.
You've never wanted to properly modify a S-Series then, it works fine when you're logged in
I've posted the pictures before to show how much work went into the job.

Easiest swap/upgrade path is finding a '98 SL2/SW2/SC2 that's been rear-ended with the rest of the options you want.
  • Set the PCM harness on the engine
  • Set the A/C compressor over the radiator support
  • Drop the engine out the bottom
  • Slide the SOHC setup out of the way
  • Slide the DOHC setup in, 15-17 bolts total plus radiator hose's.
This is assuming you have a cement floor and a lift. If you don't have a lift pull the engine/trans out the top (far easier than trying to get the body high enough to clear the engine without a lift), you'll need a load leveler because the crankshaft pulley has to clear the passenger side fender before the transmission gets to the driver side frame rail (that'll make sense once you see it).

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

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Old 03-20-2015, 11:57 AM   #8
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1996 SW2
Default Re: Yay, another engine swap...

Quote:
Originally Posted by fetchitfido View Post
You've never wanted to properly modify a S-Series then
You're confusing "modify" with "performance".
Quote:
it works fine when you're logged in
That'd be the day.... Generally, when posting external links, they should be to sites that don't require membership, or at least will display the relevant info to anonymous users.

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Old 03-20-2015, 12:27 PM   #9
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Default Re: Yay, another engine swap...

Quote:
Originally Posted by madpogue View Post
Generally, when posting external links, they should be to sites that don't require membership, or at least will display the relevant info to anonymous users.
You mean like here on SF where you can't see any uploaded pictures unless you're logged in, during the few times you can get SF to load something more interesting than "Server Busy Come Back Later"?

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

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Old 03-30-2015, 10:09 AM   #10
JayRAudetteJr
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1998 SW1
Default Re: Yay, another engine swap...

Thanks everyone.

My initial idea was to source a twincam and mod it. I wanted to get the power+ from a lightly built twin, but not go aftermarket hog wild. NA, basic bolt-ons, suspension improvements, etc. I was torn between getting one, stripping and building from the block up, or just getting a low-miles. I'm going to source a low mile and go from there, a full rebuild isn't on my hotlist. The bodywork will be a just for fun. Make an SW3.

Thanks again,

...
-Jay-

1998 SW1. No Mods (yet). 180K/mi Purch: 11/19/2013

Last edited by JayRAudetteJr; 03-30-2015 at 10:16 AM..

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Old 04-12-2015, 06:54 PM   #11
Killamurk
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Default Re: Yay, another engine swap...

Should i swap the head or motor for a engine swap .. also what if it's DOHC TO SOHC

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Old 04-13-2015, 09:31 AM   #12
Steve44
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1999 SL2
Default Re: Yay, another engine swap...

Jay, If I were you, Here's what I would do:
Find an 98 SW2 that is mangled/smashed up/rotted out, but with a good engine/trans. (I know this is a tall order) Pull the engine/trans, AND the PCM.
Change all three. Plug and play.
I'm a big Fan of the easy way.

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