Just a short video of my engine partially taken apart.
I had to change the intake gasket.
This was actually my first time tackling a job like this and it was actually really easy.
So if you have a 3800 engine and need the lower gasket replaced do it yourself and don't pay the dealer. I was a total noob at it and pulled it off just fine =)
While it was apart I went ahead and installed an Intercooler.
I figure since its already apart an Intercooler would be easy to put in at this point =)
Chevy 3.8 coolant leak
Yes, many of the 3.8 engines have leaking intake gaskets. But sometimes
it's not the intake gasket but the coolant bypass tubes instead. It's very
easy to overlook this. Here's what to look for and how to do it.
How To Replace The Head Gasket and Intake Manifold Gaskets On A GM 3800 Engine
In this walkthrough I replace the head gaskets, upper intake manifold (UIM)
gaskets, and lower intake manifold (LIM) gaskets on a 1997 pontiac
bonneville. These steps will be identical for almost any GM 3800 / 3400 /
3100 series II motor.
If you have any questions feel free to post them on the video and I'll do
my best to try to help!
Here is a link to the the text walkthrough I used as a guide for making
Also here's a list of torque specs for most of the motor:
Camshaft Bolt: 74 ft/lbs + 90 degrees angle torque
Camshaft thrust plate: 132 in/lbs (T30 torx)
Front cover bolts: 15 ft/lbs + 40 degrees angle torque
Oil pan bolts: 125 in/lbs
Crank sensor nuts: 18 ft/lbs
Camshaft sensor bolts 48 in/lbs
Lifter hold-downs: 22 ft/lbs
Rocker bolts: 11 ft/lbs(132in/lbs) + 90 degrees angle torque
Lower intake bolts: 132 in/lbs
Supercharger bolts: 17ft/lbs
Crank Bolt: 111 ft/lbs + 76 degrees angle torque up to 10/98
111 ft/lbs +114 degrees angle torque 10/98 and up
Cylinder head bolts: 37 ft/lbs + 130 degrees + 30 degrees up to 10/98
37 ft/lbs + 120 degrees
Flywheel/flexplate bolts: 132 in/lbs + 50 degrees
Exhaust manifolds: stud/nuts 132
Nuts 156 in/lbs
Oil filter adapter to timing cover: 22 ft/lbs 97 earlier
132 in/lbs + 50 degrees 97 and later Oil pump
Cover to timing cover: 98 in/lbs
Pick up tube and screen: 132 in/lbs
Valve cover bolts: 89 in/lbs
Tstat bolts: 21 ft/lbs
Water Pump: 132 in/lbs + 80 degrees
Water pump pulley: 115 in/lbs
Throttle body: 84-89 in/lbs
Fuel rail nuts: 75-84 in/lbs
3800 Series 2 Modding Basics
Mods and Vendors list
Short Stack Intercooler
UD Water Pump Pulley
UD Alternator Pulley
Solid Motor Mounts
3 Inch Downpipe
Shortened Dog Bones
Rear Strut Tower Brace
Aeroforce Scan Gauge
3 gauge Pod
Throttle Body Heat Shield
Throttle Body Spacers
Ebay user "American Superchargers"
Modular Pulley System
All other parts not listed were purchased at various auto parts stores,Ebay
users I dont remember and Walmart.
Buick 3800 Bearings or Lifter or Rod Knocking with Valve Covers Off
Here is a longer video of the 1990 Buick Lesabre with major engine trouble.
Hopefully this can be of use if someone can definatively identify the
issue so that others who have a similar situation know what is going on
with their engine. As for me, I know this engine is trashed. A new one
will be arriving soon for the amount of $150 :)
1995 Buick Lesabre Intake Manifold Part 2: Intro
Click the above link to find the Intake Manifold for your vehicle. In this
video we'll diagnose and repair problems on a 1995 Buick LeSabre Intake
3800 Lower Intake fix
Just some nuggets of wisdom for fixing a leaking lower intake gasket on a
GM 3.8L Series 2 V6.
Removing the engine on my 97 Riviera
Pulling the knocking 3800 supercharged out of my Riviera to make way for
the replacement engine. Came out relatively easy thanks to the engine
wiring for the most part is one harness that unplugs at the firewall.
Everything is in that harness except the starter, alternator and speed
sensor wiring. The AC compressor and power steering pump unbolt and can be
left in the car so you don't have to drain the fluid/refrigerant. The
biggest pain was getting the axis motor mount off, the bolts were pretty
rusty. The ironic part is those bolts have to be removed to change the
belts, which are so cracked and chipped I wouldn't doubt they are original.
The old engine will either be used for parts, or I may rebuild it at some
3800 V6 Upper Intake Swap Part 2-3
Got sick of leaking coolant so I replaced my VIN K 3800 plastic upper
intake swap with a metal one from a L26 3800 Series III (VIN 2) V6. Crappy
video quality, filmed at night. Will re-do tomorrow if there are
sufficient views to warrant it.
3800 Series 2 make your own fenderwell intake for less then $100
Build your own fenderwell intake for way less then $100
Support 3800 vendors. I dont work for any of these guys but without them a
lot of us wouldnt be able to mod. Our cars are not supported by the big
aftermarket companies so heres a quick plug for the 3 vendors left.
Unbelievable even when you see it with your own Eyes !!!
Watch how gas vapors can easily power a V-8... 4.8 L engine ! Also watch my
other video with added transducer to power vacuum idle here:
Also watch my "TEST DRIVE IN PROGRESS" video at:
GM 3.8 Intake Manifold Removal
GM 3.8 Intake Manifold Removal. GM series 2 intake manifold gasket removal.
This is a quick how to remove the Intake Manifold from a GM 3.8 series 2