SaturnFans.com
saturnfans.com - classifieds - forums


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Mods

Reply
 
Thread Tools Display Modes
Old 09-20-2006, 09:23 PM   #1
mb17180116
New Member
mb17180116 is on a distinguished road
 
Join Date: Aug 2006
Posts: 6
Default 99 SL1 SOHC to DOHC swap

Just wondering, if i wanted to swap out my SOHC engine on my manual 99 SL1, for a DOHC engine from the same year....would it be a simple take one out and put the other in kind of thing, or would it require some kind of modifications. Also, what other parts would i need to switch over?
mb17180116 is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 09-20-2006, 10:01 PM   #2
andy_95sl2
Master Member
andy_95sl2 is on a distinguished road
 
andy_95sl2's Avatar
 
Join Date: Jan 2006
Location: Grafenwoehr, Germany
Posts: 3,207
 
Default Re: 99 SL1 SOHC to DOHC swap

you need the DOHC motor, DOHC gauge cluster, DOHC computer (and dohc transmission if you have an automatic) DOHC engine harness (can probably use your current one) and thats pretty much it.
...
2004 Jeep Wrangler Rubicon -> daily & toy =)
2009 BMW 128i -> sold
2003 VW GTI 1.8T -> wrecked
1998 Saturn SL2 -> parted out
1995 Saturn SL2 -> sold
1995 Saturn SL2 -> sold
andy_95sl2 is offline   Reply With Quote
Old 09-21-2006, 12:30 PM   #3
madpogue
Super Member
madpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud of
 
Join Date: Sep 2004
Location: Madison, WI USA
Posts: 25,715
 

1996 SW2
Default Re: 99 SL1 SOHC to DOHC swap

You can use your existing MP2 tranny, but it's geared more for economy than its DOHC counterpart, the MP3. That combination will get you better fuel economy; 70 MPH will rev at about 2700-ish. If you also swap in the tranny (or replace the complete powertrain as a unit), you'll get something closer to the full DOHC "experience" performance-wise. 70 MPH revs at just about 3000 RPM.
madpogue is offline   Reply With Quote
Old 09-21-2006, 12:42 PM   #4
Monkius
Advanced Member
Monkius is on a distinguished road
 
Monkius's Avatar
 
Join Date: Nov 2005
Location: RAWR!
Posts: 799
 

1998 SW2
Default Re: 99 SL1 SOHC to DOHC swap

Quote:
Originally Posted by madpogue
70 MPH revs at just about 3000 RPM.
2800 I love my magical calculator.
Monkius is offline   Reply With Quote
Old 09-21-2006, 12:45 PM   #5
madpogue
Super Member
madpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud of
 
Join Date: Sep 2004
Location: Madison, WI USA
Posts: 25,715
 

1996 SW2
Default Re: 99 SL1 SOHC to DOHC swap

Quote:
Originally Posted by Monkius
2800 I love my magical calculator.
Well, then, either my speedo or my tach is off. Other DOHC 5-speeders, where are you, at 70?
madpogue is offline   Reply With Quote
Old 09-21-2006, 12:49 PM   #6
RangerRover
Senior Member
RangerRover is on a distinguished road
 
RangerRover's Avatar
 
Join Date: Dec 2005
Location: Creedmoor, NC
Posts: 1,648
 

1999 SW2
1994 SL2
Default Re: 99 SL1 SOHC to DOHC swap

about 3k... give or take.
...
You can tell Linux is made by geeks.
RangerRover is offline   Reply With Quote
Old 09-21-2006, 12:57 PM   #7
Monkius
Advanced Member
Monkius is on a distinguished road
 
Monkius's Avatar
 
Join Date: Nov 2005
Location: RAWR!
Posts: 799
 

1998 SW2
Default Re: 99 SL1 SOHC to DOHC swap

I haven't driven that fast constantly in a while, a lot of city driving... But I was at 2500rpm at 62 the other day. Factory speedos ARE off a little bit, though... That's why the cops don't bug you if you're not speeding by a lot.
Monkius is offline   Reply With Quote
Old 09-21-2006, 02:02 PM   #8
Dr B
Senior Member
Dr B is on a distinguished road
 
Dr B's Avatar
 
Join Date: Mar 2005
Location: Alabama
Posts: 1,498

1992 SL2
1993 SL2
Default Re: 99 SL1 SOHC to DOHC swap

I was driving A 2001 GM car awhile back ( intrigued by )
65 mph @ 1700 rpm
could we get this on our cars ?
...
Have A Great Day , it is YOUR choice !
Dr B is offline   Reply With Quote
Old 09-21-2006, 05:08 PM   #9
fetchitfido
Super Member
fetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant futurefetchitfido has a brilliant future
 
fetchitfido's Avatar
 
Join Date: May 2006
Posts: 15,140
 

2001 SC2
Default Re: 99 SL1 SOHC to DOHC swap

Quote:
65 mph @ 1700 rpm, could we get this on our cars ?
It's called 5th gear for me. but I've got the SOHC with the default tranny for now.
...
The proper way to fix a S-Series automatic is to replace it with a manual
fetchitfido is offline   Reply With Quote
Old 09-21-2006, 07:57 PM   #10
Monkius
Advanced Member
Monkius is on a distinguished road
 
Monkius's Avatar
 
Join Date: Nov 2005
Location: RAWR!
Posts: 799
 

1998 SW2
Default Re: 99 SL1 SOHC to DOHC swap

Quote:
Originally Posted by fetchitfido
Quote:
Originally Posted by Dr B
65 mph @ 1700 rpm, could we get this on our cars ?
It's called 5th gear for me. but I've got the SOHC with the default tranny for now.
Lol, the MP2's gearing isn't even that tall... 1700rpm in fifth on a SOHC equals 50mph. What were you driving, a Cadillac?
Monkius is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
96 Sl1 Sohc - Swap - 98 Sc2 Dohc RyanEricW S-Series Tech 11 06-06-2008 12:19 AM
97 SL2 DOHC swap to 95 SOHC SL1 ratnin57 S-Series Mods 6 12-24-2007 12:25 PM
96 SL1 - swap dead SOHC for DOHC casterman S-Series Tech 13 11-10-2007 11:37 PM
'95 SL1 SOHC->DOHC head swap? Mr. Powers S-Series General 6 07-15-2004 02:23 PM
Another sohc-dohc swap Q budiceman0 S-Series Tech 6 08-25-2003 03:32 AM


All times are GMT -4. The time now is 10:57 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
SaturnFans.com. The Saturn Enthusiasts Site.