2012-03-06 : Rebuilt GM (Chevrolet) 3100. New main bearings, rod bearings, camshaft bearings, piston rings, head gaskets, valve cover gaskets, EGR gaskets, intake gasket, plenum gasket, Exhaust manifold gaskets, valve stem seals, thermostat, oil pan gasket, oil pump, water pump, oil filter, engine oil, and paint.
I neglected to include piston rings in the audio, but the engine does have the new rings.
3100 Engine Rebuild
Rebuilding a 3100 V6.... Repair cost was $1,200 using Re-man cam and crank.
blowing a 3.1 mpfi v6 engine
customer brought in a Z24 just like mine! 3.1 5 speed... 3.1 was blowen,
sounds like a wrist pin let go. for the same price of replacing the old 3.1
with another old 3.1, he decided to bring it to me, the expert! and have a
3400 SFI installed!
3800 V6 Rebuild Part II
Some of the things I've learned while rebuilding a race prepped 3800 bottom
end addressing machine work, Rod (big ends), crank flex, balancing etc...
Machine work done by Thorsen's Racing Engines. Assembled at our garage.
Rebuild is a series 3 L26 to L32 conversion, reconditioned rods, ARP rod
bolts, fully balanced rotating assembly, Clevite bearings, Hastings piston
rings, reconditioned L32 pistons, Intense-Racing stage 3 blower cam, ect..
1994 Beretta 3400, Pacesetter headers and Magnaflow muffler
Short Exhaust clip of my current
setup. Still need some welding done on the pipes, but not too notable in
the video. Yes, wierd angle on the camera, was done with a Palm Pre 2
sitting on a rag propped up by a roll of masking tape, lol.
Pacesetter headers cut to fit, catless and resonator-less, full 2.5" piping
back to a Magnaflow Magnapack and Hooker dual resonated tip.
1994 Beretta cammed 3400 swap, Comp Cams street cam with .480 lift, FFP
underdrive pulley, TCE 65mm throttle body, MRZ solid mounts, Taylor
Thundervolt 8.2mm wires, A/C and EGR delete.
And plenty of other little suspension mods and other extras...
2000 Chevrolet Malibu 3.1L Engine Knock
I have a Malibu with what sounds like the famous piston slap, however it
doesnt go away. I replaced the lifters because I had to replace a leaking
intake gasket anyway. It has new plugs and wires and has always made the
sound even before replacing them. It sounds like it's coming from the top
of the engine however I am open to any and all diagnostics. Please leave a
1991 Camaro 3.1 Liter v6 no start. Please help!
I've replaced the things stated in the video, and also the air filter and
fuel filter. There is spark, and there is fuel getting to the injectors. I
don't know where to turn to besides taking at apart to get at the timing
chain and stuff to make sure the timing marks are lined up. That's my last
resort if I have to go that far. Also, the check engine light stays on when
the key is on, but there weren't any codes the last time I checked. Any
help would be much appreciated. Thank you youtubers! Update!!! I just
replaced the pick up assembly in the distributor.
GM 3400 / 3100 3.1 3.4 Engine Misfire Cause & Causes Miss Missing P0303
Here is a video for fellow GM 3400 & 3100 liter engine owners. Have a
misfire? This video explains the causes for what could be causing the
problem. Mine showed up as a P0303 cylinder 3 misfire. Couldn't figure it
out, but finally did. The spark plug and wire were replaced along with a
new coil. Could hear the injector firing with a stethoscope but still had
the miss. Found out after tearing into the intake that the lower intake
If your car is missing out, first try the following. Check for spark and
check the spark plug, wire and coil. A test you can do if it randomly
misses is in the dark, spray a mist of water around the plug wires. If you
see blue arcing, you've found the problem. But be careful not to zap
yourself, IT HURTS!
If the spark is good the listen at the injector. Is it firing and
clicking? If not, you've found the problem.
If both those seem good, then check for compression. Do this with a
compression tester available at any Autozone with the loan a tool program
If all 3 of those check out then it's a possible vacuum leak. May be time
to do an intake manifold gasket repair as they are known to go out. But,
if you do have to do an intake manifold gasket fix, go ahead and replace
the head gaskets too. You'll be glad you did. Not fun taking it all back
apart again. Check out my youtube channel for these videos both on doing
the lower intake manifold gasket and the head gasket.
Got questions about this engine? Leave a comment in the section below and
I'll try to help!
2001 Chevy Malibu 3.1L rod knock
Vehicle had intake manifold gasket replaced, throttle body and IAC cleaned.
It then started stall while test driving, followed by starting to make this
noise. The day after this video was made, I moved the car into my driveway
and it stopped running for good, refusing to turn over. Once I opened it
up, found one of the pistons had disintegrated and a chunk of it got wedged
in the crank. I also found the head of a valve. My best guess right now is
that a valve seat dropped into the cylinder and started to rattle around
until it broke the valve, which then busted up the piston. The engine in
the car has since been replaced and now runs like a champ.
Buick - 3100 SFI Engine Training (1994)
This video from GM's Certified-Plus Training series provides details of the
redesigned 3100 SFI Engine introduced on the 1994 Buick Regal and Skylark.
Topics covered include: 1996 Government Requirements, Engine Introduction,
Management Strategy, Diagnosis Review and Service.
GM ( Chevrolet or GMC ) 4.3 L V6 Engine Tear Down
This video goes through the teardown process of a GM 4.3L V6. It has been
removed from the vehicle and we take it apart, except for crank and piston
The automobile consist of:
• Fuel System: Purpose is to deliver fuel to the engine. It consists of
the fuel tank, pump, gauge/sensor, filter, pressure regulator and
• Air Intake System: Purpose is to clean and direct outside air into the
engine. It consist of air filter, ducts, air plenum and intake manifold.
• Exhaust System: Purpose is to
direct Exhaust gasses out of
combustion out of engine. It consists of the Exhaust manifold, converters, pipes and
• Cooling System: Purpose is to remove excess heat from the engine. It
consists of water pump, hoses, radiator, thermostat, cooling fan and
coolant recovery tank. Also the oil system serves as a cooling system as
well as a lubricating system. It consist of oil pump, pan, filter and
1. Clutch: Purpose is to connect the engine and transmission together. It
consists of clutch drive disc, driven disc, release bearing, clutch fork,
cable, slave cylinder, master cylinder. There are three types of clutch
systems: mechanical, cable and hydraulic.
2. Transmission: Purpose is to match engine speed to road speed. Two types
used are manual or automatic. These consist of gears, linkages, cables and
converters for automatics. A manual is connected to the clutch by a
flywheel and automatic by a flexplate.
3. Driveshaft: Purpose is to connect the transmission to the rear axle. It
consists of a slip yoke, shaft and universal joints.
4. Rear axle differential: Purpose is to change the angle of motion from
engine to the wheels. It also divides torque between the wheels. It
consists of a ring and pinion gear, carrier, bearings, crush sleeve and
5. Wheels/Tires: Purpose is to provide traction to the road as well as
carry the weight of the vehicle.
Vehicle Control Systems:
1. Brakes: Purpose is to slow and stop the vehicle. It consists of master
cylinder, brake Booster (vacuum or
hydraulic), calipers, drums, pads and rotors.
2. Steering: Purpose is to direct vehicle in the required direction.
Consists of steering gear (rack & pinion), steering wheel, column,
inner/outer tie rods, pump, reservoir, hoses and pipes.
3. Suspension: Purpose is to provide stability and handling while also
providing comfort to the ride. Consists of shocks, struts, sway bars, end
links, springs, trailing arms and bushings.
1: Heating Ventilation Air Conditioning (HVAC): Heats and cools interior
air to passenger comfort. Also circulates outside and inside air.
• Air Conditioning: Consist of condenser, compressor, accumulator
(receiver/dryer) orifice, expansion valve, hoses, evaporator, controls,
actuators and modules.
• Heating: Consists of heater core, valves, hoses and switches.
1. Power Generation: Creates electrical power to run all the electrical
systems. Consists of the alternator.
2. Power storage: Stores unused power to start the car and supply voltage
to the alternator to create more electricity.
• Both systems consist of wiring, harnesses, fuse, relays and modules
Catastrophic GM 3100 gasket failure
This otherwise clean Buick Century was relegated to the scrap yard because
of the gasket failure commonly found on the General Motors 3100/3400 family
of V6 engines. Change your lower intake manifold gasket, people!
Part 2 GM 3400 How to Replace a Bad Blown Head Gasket Reassembly Overheats No Vent Heat 3.4 Liter
Part 2 Reassembly on a head gasket change for a GM 3400. Basically the
same as a 3.1 Engine. Here are a few torque ratings that I used while I
was putting it back together.
Head bolts 65 foot pounds, torque to 40 in criss cross pattern, then 50,
55, 60 then finally 65
Rocker arm bolts 40 foot pounds then up to 50.
The rest were just hand tightened down good. Got questions? Stuck on one
certain area? Give me a shout out! I'll help answer your questions best I
can. : )
Replaced the head gaskets on this 3400 because they were bad. Engine would
overheat. If you watch at the end of the first video, the dismantling,
you'll see the bad areas of the head gasket
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