Carburetion & Turbo Systems Vortec 5700 User manual

Industrial Alternate Fueled Engines
1.6L,3.OL, 4.3L, 5.7L, 7.4L and 8.1L Engines
Operation and Maintenance Manual
Vortec1600
.,=L .= '
Vortec 3000'
Vortec 5700
Vortec4300
Vortec8100
Carburetion & Turbo Systems,Inc.
1897Eagle CreekBlvd., Shakopee, MN 55379
A GM Powertrain Product

Carburetion & Turbo Systems,Inc.
1897Eagle Creek Blvd.
Shakopee,
MN 55379
Phone [phone] Fax [phone]
Limited Warranty
New GM Powertrain (GMPT) Engines in Original Equipment Manufacturers Industrial Power
Applications
Carburetion & Turbo Systems, Inc. (CTS) warrants each new engine supplied by CTS, for installation in its
industrialapplicationsthat is found in normal use and serviceto be defective in factory material or workmanship,
within a period of 12 months or 2000 hours, whichever comes first. It will reimburse or credit for necessary
repairs or replacement of any defective or malfunctioning parts of such engine, with the exception of water
pumps. Engine water pumps are not covered by any GMPT warranty, nor is it covered by any CTS warranty.
Replacementsmust be made with genuineGMPT approved parts.
The warranty period shallbegin on the date the OEM industrialequipment is deliveredto the first retailpurchaser,
orwhen the industrial equipment is first placed in serviceprior to sale at retail, however,the warrantyperiod will
commence no later than one year after the engine's model year production ends.
THIS WARRANTY ONLY COVERS MALFUNCTIONS RESULTING FROM DEFECTS IN
MATERIAL AND WORKMANSHIP. IT DOES NOT COVER LABOR REQUIRED TO REMOVE,
REPLACE OR
GAIN OR CLOSE ACCESS TO THE ENGINE OR POWER UNIT.
This warranty does not covermalfunctionsresultingfrom:
Improper calibrationof spark, fuel systems
Water systems
Misuse
Negligence
Accident
Alterationsnot approvedby GMPT or CTS
Lack of performance of normal maintenanceservices
Improper installation
The replacement of maintenance items (i.e. sparkplugs, ignition components,positive crankcase
ventilatorvalve and filters) made in connectionwith normal maintenanceservice
Loss oftime, inconvenience,loss of use of equipment orother consequentialdamages
In the event of a defect,the purchasershall:
Notify the dealer / distributor of any such defectivepart within 20 days
Provideproof ofpurchase and in-service date to the dealer / distributorwhen requestingwarranty
Shallproperly operate and maintain the engine in accordancewith an authorizedowner
/ operator
manual
LOSS OF TIME, INCONVENIENCE, LOSS OF USE OF THE EQUIPMENT, COMMERCIAL LOSS OR
CONSEQUENTIALDAMAGE
ARE NOT COVEREDTO THE EXTENT ALLOWED BY LAW.

TABLE OFCONTENTS
Warranty Information
Introduction
How to Use this Manual
EngineIdentification
Parts and Service
Operating Instructions
Startingthe Engine
LPG orNG Fuel Systems,Velocity Governors
Stoppingthe Engine
Power Loss at Higher Elevations
Maintenance Instructions
Routine Maintenance
ScheduledPreventiveMaintenance
Engine Oil Information
Oil Filter
Air Cleaner
SafetyElement
Cooling System
Belts
Fuel Filter
Ignition Systems
SparkPlugs
Storage (Preparingfor and removingfrom)
Appendix
General Specifications
Maintenance Schedule

INTRODUCTION
We are pleased that you have purchased a GM Powertrain engine from Carburetion & Turbo Systems,
Inc. We take pride in providing quality products and support. Each engine is assembled with the
alternative fuels carburetion to fit your specific requirements. However, certain checks should be made
before placing the engine into service.
Please read the Initial Start-Up Inspection Requirements in
the Maintenancesection of this manual.
HOW TOUSE THIS MANUAL
This manual contains instructions on the safe operation and preventive maintenance of your engine. We
urge you to read this manual prior to start-up or operation of this engine.
Carburetion & Turbo Systems, Inc. engines are equipped with a variety of components to suit a broad
range of customer requirements. This manual does not identify equipment as standard or optional, and
not all the equipment described in this manual may be found on your engine.
Please pay special attentionto the NOTES, CAUTIONS, and WARNINGS.
Warnings remind you to be careful in areas where carelessness can cause personal
injury.
Cautions are given to prevent you from error that could cause damage to the equipment.
Notes give you added informationdesigned to help you.
ENGINE IDENTIFICATION
An identification label is affixed to the right side of the engine on the rocker cover when looking at the
engine from the flywheel end. (The engine serial number is also stampedinto the left side of the cylinder
block near the engine flywheel.) The label contains the engine model number and serial number. The
engine model and serial number are required when seeking information concerning the engine and
/ or
ordering replacement service parts.
PARTS AND SERVICE
Replacement parts, service and technical support can be obtained from Carburetion & Turbo Systems,
Inc. by calling 952-445-3910. The engine model and serial number will be required when seeking
informationand
1 or ordering parts.
STARTINGTHE ENGINE
Warning: All internal combustion engine give off various fumes and gases while running.
Do not startor run the engine in a closed or poorly ventilated building where exhaust gases
can accumulate. Avoid breathing these fumes as they may contain poisonous carbon
monoxide, which can endanger your health or life if inhaled even for a very short time.
Caution: If the engine stalls or falters during starting, wait 3 to 4 seconds before re-
engaging the starter. This will prevent possible damage to the starter or the engine. DO
NOT operate the starter for periods longer than 30 seconds at a time. An interval of at
least
1 minute should be observed between cranking periods to protect the starter from
overheating.

LPG OR NG FUEL SYSTEMS,VELOCITY GOVERNORS
Turn on the gas supply to the engine. Turn the ignition key to the
START position. After the engine
starts,release the key to the ON position.
STOPPINGTHE ENGINE
Followingnormal operating conditions, lower the engine speed to idle, pushing the throttle cable
in on mechanical systems, or with electronic systems, placing the
Hi 1 Lo switch in the Lo
position.
Run the engine for a few minutes at the idle to allow the coolant system to cool down before
turning the ignition to the
OFF position.
Warning: Avoid injury when checking the Hot Engine. Allow the engine to cool down
before removing the radiator cap.
Caution: Before restarting the engine ensure that both the coolant system and the engine
oil level have been checked and refilled if necessary.
POWER LOSS AT HIGHER ELEVATIONS
All engines will experience power loss when operated at elevations above sea level, unless they
are turbocharged or supercharged. Turbochargers and superchargers are mechanical pumps that
put extra air into the engine to make up for the lower air density at higher elevations.
Carbureted Engines (Includes LPG and NG Systems): Carbureted engines will lose power
for two reasons. First, power is reduced 3.5% for each 1000 feet the engine is operated above
sea level, due to the decreased air density. With less dense air, the engine receives less oxygen
to burn the fuel. The enginepower is decreased in direct proportion to the reduction of available
oxygen. Second, the reduced oxygen causes the fuel mixture to have too much fuel for the
available oxygen. This is a rich mixture (rich with fuel) and not only causes the engine to
produce sooty black exhaust, but also causes additional loss of power and premature spark plug
fouling. Engines that are operated over 3000 feet of elevation that exhibit black smoke or
produce less than optimum power should have the fuel system re-calibrated.
Caution: Engines re-calibrated for high elevations will run lean at lower elevations. Lean
running can burn valves, will reduce valve and valve seat life and can cause engine
overheating. Failures caused by these problems arenot covered under warranty.

MAINTENANCE INSTRUCTIONS
INITIAL START UP MAINTENANCE
The initial start-up checks must be made before putting the engine into service. Please refer to
the Maintenance Schedule on page I1 and perform the initial start-up operations in the sequence
shown in column
1.
ROUTINE MAINTENANCE
Routine maintenance provides the best solution for making sure that the engine is ready when
you are. The following are someroutine service points:
Make frequent checks of the engine oil and coolant levels
Repair any oil or coolant leaks immediately
Check battery condition and cables frequently
Keep the engine air filter clean
Monitor engine coolant temperature
Monitor engine oil pressure
Check voltmeter and charging system
SCHEDULED PREVENTIVEMAINTENANCE
Refer to the Maintenance Schedule on page I1 to ensure that all of the maintenance items listed
are checked and replaced as recommended at the hours shown.
ENGINE OIL LEVEL CHECK
The engine oil level should be checked daily. It is recommended that the oil be checked just
before the engine is started for the first time each day. The oil level should be between the
Add
and Full marks on the dipstick.
Caution: Do not operate the engine with the oil level below the bottom or Add marks on
the dipstick, or above the top or Full mark on the dipstick.
ADDING ENGINE OIL
It is normal to add some oil in the period of time between oil changes. The amount will vary
with the severity of operation. When adding or replacing engine oil, be sure the oil meets or
exceeds the recommended specifications.
CHANGINE ENGINE OIL AND FILTER
Under normal operating conditions, the engine oil and filter must be changed every 200 hours
or every
3 months, whichever occurs first.

(ChangingEngine Oil and Filter continued)
Under abnormal operating conditions, the oil and filter should be changed more often if the
engine is operating in dusty or extremelydirty areas, or during cold weather. No oil additives or
break-in oil changeis required.
ENGINE OIL QUALITY
To achieve proper engine performance and durability, it is important that you use only engine
lubricating oils of the correct quality in your engine. Proper quality oils also provide maximum
efficiencyfor crankcaseventilation systems, which reduces pollution.
Important: Use only engine oils displaying the American Petroleum Institute (API)
"Starburst" certification marked "FOR GASOLINE ENGINES" on the container.
Gasoline engines that are converted for LPG or NG fuels MUST use oils labeled "FOR
GASOLINE ENGINES" also. Do not use oils that are specifically formulated for Diesel
Engines only.
CC or CD classification oils, even when labeled Heavy Duty or for Natural
Gas Engines ARE NOT ACCEPTABLE.
ENGINE OIL RECOMMENDATIONS
Multi-viscosity oils are recommended. SAE 10W-30 is recommended for your engine from 0
degrees F (-1 8 degrees C) or above. If ambient temperatures are consistentlybelow 0 degrees F,
SAE 5W-30 oil can be used. Synthetic oils are not recommended for industrial or stationary
engines.
OIL FILTER
The engines use an AC Delco oil filter as original equipment. An equivalent oil filter must be
used when servicingthe engine. Below is a chart showing the correct oil filter for your engine:
The filter protects your engine from harmful, abrasive, or sludgy particles without blocking the
flow of oil to vital engine parts.
Engine
OilFilter
To replace the filter, use a proper oil filter wrench to remove the filter. Clean the filter-
mounting base and lightly coat the gasket surfaceof the new filter with engine oil. Hand tighten
the filter until the gasket contacts the base, then tighten another
'/2 turn. Fill the engine with the
correct amount of oil,
run the engine and check for oil leaks at the drain plug and oil filter gasket.
Tighten as necessary to stop any oil leakagenoted.
1.6L
94632619
3.0L
PF-25
4.3L
PF-47 or
PF-52
5.7L
PF-121 8
7.4L
PF-1218
8.1L
PF-454

ENGINE AIR CLEANER
The engine air cleaner filters air entering the engine intake system and acts as a silencer and
flame arrester when assembled to the intake system. A dirty air cleaner produces an abrasive
fuel mixture and can cause severe damage to the cylinder walls and piston rings. Damage to the
cylinderwalls and piston rings will cause high oil consumption and shorten the life of the engine.
Caution: Under severe dusty or dirty conditions, replace the air cleaner more frequently.
Remove the primary air cleaner element from the air cleaner assembly and inspect the element
for foreign material restrictions or signs of excessive wear or damage. Replace the element if
necessary. Remove all dust and foreign matter from the air cleaner housing. Reinstall the air
cleaner element, the air cleaner cup and securelyfasten the retaining clips.
SAFETY ELEMENT
If your engine is equipped with an air cleaner, which utilizes a safety element, ensure the element
isproperly in place before installing the primary element. Change the safety element annually.
COOLING SYSTEM
Coolant Level: Check the coolant level of the radiator daily and only when the engine is cool.
Generally, a good time to do this is just prior to starting the engine for the first time each day.
Maintain the coolant level at
34 to 1-112 inches below the filler neck seat of the radiator when the
coolant is cold.
In addition, when checking the coolant level, also inspect the condition of the
radiator cap rubber seal. Make sure it is clean and free of any debris that would keep it from
seating on the filler neck seat. Rinse off with clean water if necessary. Make sure that the filler
neck seat is free of any dirt particles also.
Warning: Never remove the radiator cap while the engine is running under any
circumstances! Failure to follow these instructions could result in damage to the cooling
system or engine, or could cause personal injury. Removing the radiator cap from a hot
radiator may cause scalding hot coolant to stream or blow out of the radiator. Wait until
the engine has cooled, then wrap a thick cloth around the radiator cap and
turn slowly to
the first stop. Step back while the pressure is released from the cooling system. When all
the pressure has been released, press down on the cap and remove it slowly.
DO .NOT add coolant to any engine that has become overheated until the engine cools.
Adding coolant to an extremely hot engine can result in a cracked block orcylinder head.
Use only a permanent type coolant when refilling or flushing the coolant system. Recommended
ethylene glycol mix 52/48 is normal up to a maximum of 60% glycol, 40% water. Refer to the
mixture chart on the container for additional antifreeze protection information. DO NOT use
alcohol or methanol antifreeze, or mix them with the specified coolant. Plain water may be used
in an emergency (except in fieezing temperatures), but replace it with the specified coolant as
quicklyas possible to avoid damage to the system.

Radiator: Inspect the exterior of the radiator for obstructions. Remove all foreign material with
a soft brush or cloth. Use care to avoid damaging the core fins. If available, use low-pressure
compressed air or a stream of water in the opposite direction of the normal airflow.
Check all hoses and connections for leaks and replace if cracked, frayed or spongy.
Fan Belts: The water pump is usuallybelt driven. The samebelt may also drive the fan and (or)
the alternator. Belts should be properly adjusted at all times.
A loose belt can cause improper
alternator fan and water pump operation, and can also cause overheating.
Serpentine Belt: Some engines utilize serpentine belts on the front of the engine. This type of
belt system incorporates a belt-tensioning device, which keeps the belt at the proper tension.
This belt should be checked regularly for cracks or "checking" on the groove side of the belt. If
a problem is apparent, the belt must be replaced.
V-Type Belt: V-Type belts are generally tensioned by adjusting the alternator, or through a
mechanical belt tensioner. The belt is generally correctly tensioned when there is
% inch of
depression on the belt between the water pump and the crankshaft pulley.
FUEL FILTER
Carbureted Engines:
On carbureted engines, an in-line filter is incorporated into the fuel
supply line. It is recommended that this filter be changed every 250 hours or every 6 months
whichever occurs first.
IGNITIONS SYSTEMS
There are three types of ignition systems used on the GM Powertrain engines.
Solid StateElectronic Distributor
Solid StateElectronic Distributor with Electronic Control Unit (ECU)
Distributor-less Electronic Ignitionwith ECU
Please refer to the General Specific chart to determine the ignition system used on your
particular engine.
Ignition Timing: Proper adjustment of the ignition timing must be obtained to provide the
optimum engine power output and economy.
Spark Plugs: Spark plugs should be replaced at the recommended intervals described in the
Maintenance Schedule. Use only the recommended spark plug or an equivalent as described in
the General Specifications,where you will also find the gap specifications.
When removing spark plugs, always note which cylinder each spark plug came out of.
Inspection of the spark plug can detect engine problems. Look at the porcelain around the center
electrode of each plug. If there are glossy brown deposits, that cylinder is burning excess oil.

(Spark Plugs continued)
If there are dark gray or sooty black deposits, your engine is running rich and you are burning
excess fuel. The optimum color of the deposits on the porcelain is light tan or light brown. This
shows optimum fuel mixture and proper engine running conditions. If the deposits are almost
white, the engine may be running excessively lean. Lean running is very detrimental to your
engine life and should be corrected immediately.
If one or more cylinders are burning oil, the
smoke from the engine will be a blue-gray color. Most common causes are worn out piston rings
or rings that are not broken in, or cut, nicked or worn out valve stem seals. If the engine is
running rich, the exhaust smoke will be a sooty black color.
STORAGE
One to Six Months:,If the engine or machine is to be placed in storage for a period of one to six
months, it is recommended that the following steps be followed:
Add a fuel conditioner such as "Stabil" or equivalent to the fuel tank as
recommended on the bottle. Run the engine for approximately 10 to 15 minutes
to insure that the treated fuel is completelythrough the fuel system
Fill the tank with fuel
Protect the air cleaner inlet from water entry
Check the coolant protection and top off radiator
Store indoors if possible
For Extended Periods: Follow the above recommended procedures, plus do the following:
Drain the engine crankcase and refill with recommended oil
Change the oil filter
Disconnect and remove the battery
Clean exterior surface of the engine
Removing the Engine from Extended Storage:
Install a fully charged battery
Remove all protective coverings from the air inlet, air cleaner, exhaust and
muffler openings
Check the coolant level in the radiator and verify the protection level of the
coolant
Start the engine and allow it to run at slow idle, verify engine oil pressure
Run the engine at idle until the coolant temperature approaches 120degrees F
(49 degrees C)
Shut the engine down, drain the oil, change the oil filter and refill with the
recommended grade of oil

GENERAL SPECIFICATIONS

Maintenance Schedule
GM Powertrain
-
1.6L,3.OL, 4.3L, 5.7L, 7.4L, and 8.1L Engines
I I I I I I I I I I
(I) More frequent intervals may be requiredin dustyor dimoperatingconditions.
(2) Mechanical governor (belt driven).
(3) To be performed at specified interval or ennoally, whicheveroccurs tlnt
(4) More frequent intervals may be required with dirt In the fuel system.
(5) DM not apply toengineswith DIS ignition.
I 31 qt (Turbo) I
IT

-MPcam
WiringDiagrams
ALTERNATOR-DELCOREMY
i
THIS TERMINAL 70 BE CONNECTED
THRU A INDICATOR LIGHT. OR
10-50 OHM RESISTOR, OR OlOOE
TO A IGF!ITION SWITCH TERMINAL
ir
VOLTAGE SENSING TERMINAL

Not USW
Indiea:or Camp = white w black wh
lgnllkn (crenk & run) = red w Wue w~re
Exte3al Sense (banery voltage) + red wire