Interference Engines
The AERA Technical Committee would like to offer the following information on engines that present the possibility of interference between pistons and valves. The interference or contact may bend valve(s) when the timing between the camshaft and crankshaft is interrupted. This is generally the result of a timing belt or chain breaking or slipping.
The following list are engines that AERA is currently aware of that have exhibited interference. There may be other engines that are not listed below that have the possibility of piston to valve contact. If the engine you are working on is not listed, do not assume that it is a freewheeling design. It is suggested to add to this listing as additional information is obtained.
ACURA
1986-89 1.6L Integra
1991-95 1.7L Integra
1990-95 1.8L Integra
1986-89 2.5L Legend
1992-94 2.5L Vigor
1986-89 2.7L Legend
1990 2.7L Legend
1991-95 3.0L NSX
1991-95 3.2L Legend
AUDI
1970-93 All Except 1970-77
1.9L & 1970-73 1.8L
BMW
1987-95 2.5L 325I 525I
1994-95 4.0L 740I
CHRYSLER
1993-95 1.5L Colt
1987-88 1.5L Colt
1992-95 1.5L Eagle Summit
1987-88 1.6L Colt
1989-92 1.6L Eagle Summit
1994-98 2.0L Neon Stratus
1990-95 2.0L Eagle Talon
DAIHATSU
1988-92 1.0L Charade
1988-92 1.3L Charade
1990-92 1.6L Rocky
FIAT
1974-79 1.3L 128 Series
1979-82 1.5L Stranda
1974-78 1.6L 124 Series
1974-78 1.8L 124 Series
1974-78 1.8L 131 Series, Brava
1979-82 2.0L Brava, Spider
FORD
1981-85 1.6L Escort, EXP
1981-83 1.6L LN7, Lynx
1984-85 2.0L Escort, Tempo
1993-95 2.0L Probe
1986-88 2.0L Ranger
1984-87 2.0L Lynx, Topaz Diesel
1985 2.2L Ranger
1989-92 2.2L Probe
1986-88 2.3L Ranger
1986-87 2.3L Diesel Ranger
1991-98 4.6L Crown Victoria
GM
1986-95 1.0L Geo Metro
1989-91 1.0L Firefly (CANADA)
1985-88 1.5L Sunburst (CANADA)
1985-89 1.5L Spectrum
1990-93 1.6L Prizm, Storm
1981-84 1.8L Diesel (CANADA)
1982-86 1.8L Buick Skyhawk
1990-98 1.9L Saturn
1987-88 2.0L Buick Skyhawk
1988-95 2.3L Quad Four
1985-87 3.0L Buick
1979-95 3.8L Buick
HONDA
1986-87 1.0L Prelude
1973-78 1.2L All
1973-78 1.3L All
1980-84 1.3L All
1973-78 1.5L All
1985-89 1.5L Civic
1988-95 1.5L Civic, CRX
1993-95 1.5L Civic Del Sol
1979-84 1.5L All
1985-87 1.5L CRX
1993-95 1.6L Civic Del Sol
1973-78 1.6L All
1980-82 1.6L All
1988-95 1.6L Civic, CRX
1984-87 1.8L Prelude, Accord
1979-83 1.8L All
1986-91 2.0L Prelude
1990-91 2.1L Prelude
1990-95 2.2L Prelude, Accord
1992-95 2.2L Prelude
1995 2.7L Accord
HYUNDAI
1984-95 1.5L Excel Scoupe
1995-98 1.5L Accent
1992-95 1.6L Elantra
1993-95 1.8L Elantra
1992-95 2.0L Sonata
1989-91 2.4L Sonata
1990-95 3.0L Sonata
INFINITI
1990-92 3.0L M30
ISUZU
1987-89 1.5L I-Mark
1990-93 1.6L Stylus Impulse
1987-89 2.0L Impulse
1981-87 2.2L Diesel Truck
1986-95 2.3L Truck Trooper
1988-95 2.6L Truck Rodeo Amigo
1991-96 3.2L Trooper Rodeo Amigo
KIA
1995 2.0L Sportage
MAZDA
1984-85 2.0L 626
1988-92 2.2L 626 MX6
1989-93 2.2L Pickup
1988-95 3.0L 929 MPV
MITSUBISHI
1985-95 1.5L Mirage Precise
1990-92 1.6L Mirage
1989-95 2.0L Galant Eclipse
1983-86 2.3L Diesel Pickup
1994-95 2.4L Galant
NISSAN
1982 1.5L Centra
1983-88 1.6L Sentra Pulsar
1987-89 1.8L Pulsar
1982-89 2.0L Stanza 300ZX
1984-95 3.0L Maxima 300ZX Pathfinder
PORSCHE
1976-83 2.0L 924
1976-89 2.5L 944 Series
1989 2.7L 944 Series
1989-91 3.0L 944 Series
1976-83 4.5L 928
1984 4.7L 928
1985-91 5.0L 928
1992-95 5.4L 928
SUZUKI
1985-94 1.3L Samurai Sidekick
1989-94 1.3L Swift
TOYOTA
1986-95 1.5L Tercel
1981-83 2.2L Pickup
1984-87 2.4L Pickup
1982-88 2.8L Celica Cressida
1987-94 3.0L 4-Runner
VOLKSWAGEN
1976-91 All Except 1.9 2.1L Engine
1990-92 1.6L Golf (CANADA) Jetta
1990-95 2.0L GTI Jetta GLI Passat
VOLVO
1991 2.3L Coupe 940
1986-94 2.3L 240 740 940
The AERA Technical Committee |
Flywheel Specifications
The AERA Technical Committee suggests referring to the following
flywheel specification chart when re-surfacing flywheels.
Type of
Manufacturer Flywheel Specs Comments
_________________________________________________________________
Allis Chalmers Cup 1.437 D17,D19,190XT
Tractors
AMC Cup .125 2.5L (GM engine)
Alpha Romeo Cup .878
BMW Step .013-.015 320i
Caterpillar Cup 2.937 +/-.005 #9N2646 Cast Number
Chrysler/Mitsubishi Cup .600-.605 2.0L DOHC, #9801
Cast Number
Chrysler Cup 1.00 3.7L engine
Cummins Cup 2.925
Cummins Cup 2.937 2 piece clutch
DDC Flat 1.582 8.2L, Minimum
thickness
Fiat, Spider Step .018 1600 engine
Ford, Falcon Cup 1.00 6 Cylinder engines
Ford, Courier Cup .285
Ford Cup .310
Ford, Ranger Cup .003 V6 Cylinder engines
Ford Truck Cup 1.500 534 CID Truck
Ford Truck Flat .965 New Thickness
Ford Cup 1.140-1.160 Model A
GM, OHC Brazilian Flat .750 New Thickness
GM Cup .125 2.5L, & Vega
GM, Buick Cup .125 V6 Engines
GM, Spirit Cup .195
GM, Sprint Cup .1969 Chevrolet/Suzuki
Honda Cup .030 Small cup
Honda Cup .030 #K4SC16AG Cast
Number
Honda Cup .100-.104
Honda Cup .785 Long alignment pins
Honda Cup .900 Short alignment pins
Honda, Accord Cup .615 1986
Hyundai, Excel Flat Mitsubishi engine
Isuzu Cup .010-.017 Trooper, Pup
Isuzu, Diesel Cup 1.691-1.695 6BD1, 6BDT engines
Mack Midliner Flat 1.260 Min. Measure from
crank/mount to disc
Mazda Cup .062 RX2 Rotary engines
Mazda, RX7 Cup .310
Mazda, 2.2L, 1987 Cup .785 Hyd. Clutch,
Segmented wheel
Mazda, 2.0L Cup .805 Hyd. Clutch, .020
max/removal
Mercedes, 240D Cup .885
Navistar, 404/446 Flat .750 New thickness
Navistar, 6.9L Flat 1.410 Minimum thickness
Navistar 9.0L Flat 1.585 Minimum thickness
Nissan Flat With groove
Nissan, Maxima Flat With groove, #425
Cast Number
Nissan, (Datsun) Step .003-.005 No groove
Nissan,
(Sentra,Stanza) Step .006-.010 1.6L & 2.0L engines
Nissan, B2000 Cup .807 new Max stock removal
.020
Nissan,(Datsun)240Z Step .010 With groove
Renault Step .021 1.4L Alliance
Saab, 96 Cup .656
Subaru Cup .830 Justy
Subaru Cup .875
Subaru Cup .905 4X4 Brat
Suzuki Cup .070
Suzuki Cup .197 1.0L, 3 cyl
Toyota Step .018-.022 Large alignment pins
Toyota, 22RE Step .018-.022 #627 Cast Number
Toyota Cup .055 Small cup
Toyota Cup .965-.970 Tercel, large cup
Toyota Step .040 Tercel, step
Toyota Step .020 Land Cruiser
VW Cup .945 Air cooled, 6 Volt
VW Cup .913-.918 210MM Clutch
VW Cup .830-.835 Rabbit/Golf/Scirocco
Vanagon Cup .982 Water/Air cooled bus
engine
VW Cup .830 Air cooled engine
VW Cup .885 Air cooled engine
Specifications listed for Step type flywheels refer to the
height of the wear surface above the pressure plate mounting
surface. Specifications for Cup type flywheels refer to the
height of the pressure plate mounting surface above the wear
surface.
The AERA Technical Committee
June 1992 - TB 677R
(Please destroy TB 677)
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