89 RS LQ4 Turbo project.
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Junior Member
Joined: Jun 2009
Posts: 79
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From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
89 RS LQ4 Turbo project.
Well, I have lurked behind the scenes long enough. I just got this puppy running and I'm now in the tuning phase. I got lots of info and ideas from this board so I figured I would throw my junk up for scrutiny. Let me know what you think.
This car had a BBC in it when I got it. It was ok but nowhere near what I wanted. I already had the 6.0 waiting for a future project so I said hmmm.
This car had a BBC in it when I got it. It was ok but nowhere near what I wanted. I already had the 6.0 waiting for a future project so I said hmmm.
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
I seem to be having problems uploading pictures so let me skip to the end. If you have any questions just post them.
Joined: Sep 2007
Posts: 533
Likes: 0
From: Crestview, FL.
Car: 1989 IROC-Z, 1979 Malibu Classic
Engine: LSx 5.3
Transmission: MN12 6-speed, 4L60E
Axle/Gears: 4th gen 3.42
Re: 89 RS LQ4 Turbo project.
Man what a beautiful car and build you've got going, welcome to the LSX side of the house. I see that you are using a silverado upper radiator hose, are you using the truck water pump too? videos asap plz!
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
Yep that is a truck water pump. I will be doing some street tuning in next couple days to see how this thing runs. I will try and get some videos and post them.
Joined: Sep 2007
Posts: 533
Likes: 0
From: Crestview, FL.
Car: 1989 IROC-Z, 1979 Malibu Classic
Engine: LSx 5.3
Transmission: MN12 6-speed, 4L60E
Axle/Gears: 4th gen 3.42
Re: 89 RS LQ4 Turbo project.
Sweet thanks, how were you able to get the ls1 intake/throttle body to work with the truck water pump? I thought there was some form of clearance issue?
Junior Member
Joined: Jun 2006
Posts: 25
Likes: 0
From: Park Forest
Car: 89 Iroc-Z28
Engine: 454 BBC
Transmission: TH400
Axle/Gears: 10 bolt 2:73 Posi
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Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
Well because I'm not using cruise control I just cut off the little arm and that was it. Now because of my alternator placement I had to pull out the trusty old rubber mallet and give the upper radiator hose nipple some love & affection. It needed to rotate about 5-10 degrees but it seems to be work good so far.
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
Thanks for all of the help BTW. You are batting a 100% in my book.
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
I'm using a truck manifold on the passenger side and a F-body on the driver's side. I had to cut the truck flange off in order to clear the K-member. I then welded mild steel and a V-band. So far so good.
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project updates. She is starting to move
Well, I haven't been on here in a while so I figured I would post a quick update. I finally took this thing to the track and was very pleased
.
I ran it one weekend exactly as I drive it on the street with the muffler attached and managed to go 11.2x @ 127 mph. After some suggestion from some other turbo guys, I disconnected the muffler. The next time out it literally lit my DRs up at about 60' so I had to back out of it. My ET dropped but mph still jumped to 131 mph.
My guess is if I can get a good pass in I should be able to get in the low to mid 10s @ about 135 on about 12 psi. At 3800 lbs with me in it, I'm feeling that!!!
. I ran it one weekend exactly as I drive it on the street with the muffler attached and managed to go 11.2x @ 127 mph. After some suggestion from some other turbo guys, I disconnected the muffler. The next time out it literally lit my DRs up at about 60' so I had to back out of it. My ET dropped but mph still jumped to 131 mph.
My guess is if I can get a good pass in I should be able to get in the low to mid 10s @ about 135 on about 12 psi. At 3800 lbs with me in it, I'm feeling that!!!
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 79
Likes: 0
From: Clinton MD
Car: 89 RS
Engine: LQ4
Transmission: TH400
Axle/Gears: Too lazy to check!!
Re: 89 RS LQ4 Turbo project.
Well, I brushed the leaves and acorns of my car yesterday. This thing still tickles me every time I drive it! The last time I drove it I was going 10.6x @ 133.
I plan on going to the track this weekend to see if I can dip into the 10.4x-10.5x range. Wish me luck!
I plan on going to the track this weekend to see if I can dip into the 10.4x-10.5x range. Wish me luck!
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