3.8 series 1 supercharger adding- in originally SC car.... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 11-03-2012, 10:29 PM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
ktj100 is on a distinguished road
Exclamation 3.8 series 1 supercharger adding- in originally SC car....

Alright, so I have read threads with people asking about adding a supercharger to their stock 3.8 and then others slamming a 2 ton weight over their heads because of how non-profitable it would be. I am in a slightly different situation.

I was going down the highway in my 1995 Park Avenue Ultra and something happened subtly- slight rpm blip then everything back to normal. Then I looked at the gauges and noticed the oil pressure was unusually low (not quite into the red zone, and I had just replaced the oil pan gasket/oil/oil filter). So I pulled off the highway and after I came to a stop (or as I was almost stopped, I don't remember exactly), the motor started knocking. I don't know what exactly this could be, but I realize that my motor is junk or needs a rebuild.

Here is my question: would it be possible to get a NA series 1, put the supercharger on it, then put it in my originally supercharged car, and how much else needs to be swapped between the engines to keep it reliable and to even make the SC fit? (Also what is most likely the problem with the engine.)

NOTE: I can't afford much more than $400 and finding a good S1 SC motor in a junkyard is unrealistic, but I can get a NA S1.
ktj100 is offline   Reply With Quote
Old 11-04-2012, 12:01 AM   #2
Senior Member
Posts like a 4 Banger
 
Join Date: Feb 2010
Location: Southern Idaho
Posts: 134
Thanks: 0
Thanked 0 Times in 0 Posts
Coburn2006 is on a distinguished road
Default

Hey, I have a '95 Park Avenue Ultra as well! Mine had a motor knock and I recently replaced the motor (lifter went out and took cam with it). Anyway, I would NOT recommend putting a supercharger on an NA engine and running it.

The NA and */c blocks are the same, but the valve-train is different. The */c engines have built up pistons as well.

Not to mention the compression ratio, */c is at 8.5:1 and NA is like 9.5:1.

i got my SC engine for $550, complete engine w/ supercharger. Good luck my friend.
Coburn2006 is offline   Reply With Quote
Old 11-04-2012, 12:01 AM   #3
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,857
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

The main reason it is greatly discouraged is the bottom end. The supercharged engines are built up to handled the increased compression. If you drop in a NA bottom end, with your supercharger setup bolted on, it honestly would probably not last very long.

Maybe see what it would cost for a rebuild?

I was trying to find pictures of what happened when someone did this with a Series 1, but came up short. It shredded the bearings pretty bad within only a few thousand miles.

Series 2 handles it a little better, but we find ourselves in a different boat :(

I hate to say it, but $400 may put you in bare minimum beater car territory, if you put $400 in to an NA motor, you may not see it again.

I don't mean to beat you over the head with it, just share why everyone says what they say.

If I had $400 to spend to make the problem go away, the car would be parked until a proper engine can go in to it. $400 would go to a cheapo beater, or try and find a SC engine. I think $400 going to a NA motor would be money you would have to spend again in short order.
rjolly87 is offline   Reply With Quote
Old 11-04-2012, 12:10 AM   #4
Senior Member
Posts like a Supercharger
 
viniepooh's Avatar
 
Join Date: Dec 2010
Location: MIchigan
Posts: 177
Thanks: 0
Thanked 1 Time in 1 Post
viniepooh is on a distinguished road
Default

Travis,
heres the link to the History of 3.8 You will find it interesting as im sure anyone else would just as i did myself.
This also shows how different are the regular NA or SC engines are and why people recommending not to add SC on the NA motor.
Buick V6 engine - Wikipedia, the free encyclopedia
viniepooh is offline   Reply With Quote
Old 11-04-2012, 12:11 AM   #5
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
ktj100 is on a distinguished road
Default

Quote:
Originally Posted by Coburn2006 View Post

i got my SC engine for $550, complete engine w/ supercharger. Good luck my friend.
Thanks, I guess I will just have to wait to find a good deal. By the way, how many miles were on that engine?
ktj100 is offline   Reply With Quote
Old 11-04-2012, 12:11 AM   #6
Senior Member
Posts like a Supercharger
 
viniepooh's Avatar
 
Join Date: Dec 2010
Location: MIchigan
Posts: 177
Thanks: 0
Thanked 1 Time in 1 Post
viniepooh is on a distinguished road
Default

btw what state are you from Travis?
viniepooh is offline   Reply With Quote
Old 11-04-2012, 12:17 AM   #7
Senior Member
Posts like a 4 Banger
 
Join Date: Feb 2010
Location: Southern Idaho
Posts: 134
Thanks: 0
Thanked 0 Times in 0 Posts
Coburn2006 is on a distinguished road
Default

I got the engine from a '95 Riviera with 140,000 miles on it. Stock oil pressure and compression.

Visit car-part.com and see what'* available in your area. You can find what a lotta junkyards have.
Coburn2006 is offline   Reply With Quote
Old 11-04-2012, 05:30 AM   #8
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

I still hear about how people have done the top swap before and are still running those engines today. Matter of fact, Danthurs has a friend that had a turbo installed on his L36 with no other internal upgrades, and is also still running to this date.

Travis, are you sure your 95 is a Series 1? Last I knew, most platforms got the new Series 2 L36 that came out in 95, while a few platforms got the Series 1 */C'd engine. The L67 Series 2 */C'd engine did not come out into regular production until 1996.

This might be a reason why the 2 ton weight is dropped. When top swapping with cars 1997 and newer, its possible to re-tune the PCM so the engine isn't running like a wild horse at factory settings. 1995 and 1996, it becomes very difficult to tune the engines. Last I knew, HPTuners was the only one that could touch the 97 and up Bonneville'*. While EFILive can't.
Mike is online now   Reply With Quote
Old 11-05-2012, 08:08 PM   #9
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
ktj100 is on a distinguished road
Default

Quote:
Originally Posted by viniepooh View Post
btw what state are you from Travis?
Michigan- Grand Rapids area, I have 2 LKQ'* and one Weller by me that I go to for U Wrench It stuff
ktj100 is offline   Reply With Quote
Old 11-05-2012, 08:13 PM   #10
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
ktj100 is on a distinguished road
Default

Quote:
Originally Posted by Mike1995 View Post
I still hear about how people have done the top swap before and are still running those engines today. Matter of fact, Danthurs has a friend that had a turbo installed on his L36 with no other internal upgrades, and is also still running to this date.

Travis, are you sure your 95 is a Series 1? Last I knew, most platforms got the new Series 2 L36 that came out in 95, while a few platforms got the Series 1 */C'd engine. The L67 Series 2 */C'd engine did not come out into regular production until 1996. .
First of all, I realize most 95s have the series 2, but the supercharged versions still have the series 1 (possibly because they did not yet have the supercharged series 2 ready for production by that time. Also, what all is involved with the top swap? Any wiring changes or programming/tuning needed?
ktj100 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Originally wanted a beater...this is what I ended up with... SNK SKNR Introductions for new members 25 11-11-2005 12:22 PM
where was this badge originally? harofreak00 General GM Chat 8 03-15-2005 12:27 AM
Adding Fuses, adding heavier gauge glanghus Everything Electrical & Electronic 2 06-05-2004 12:26 AM
Adding a supercharger. atromrn 2000-2005 5 07-12-2003 03:59 AM
Cost of adding the supercharger from as SSEI to an SE? Cat88Extreme Performance, Brainstorming & Tuning 6 02-03-2003 02:39 AM


Tags
3800, knock, series, supercharged, swap

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:29 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.