Non-Interference Engines vs Interference Engines

Timing belt/ chain failure ruin an interference engine, causing the pistons & valves to collide with destructive forces. Fortunately automakers produced many non-interference engines over the years: here is a list. This one is for you Bruce (former Swype sales/ business development guy) 

The non-interference engines in this list will be highlighted!



Audi
• 1.8L 1.9L Interference
• 2.8L V6 90 100 Quattro A4 A6 Interference

BMW
• 2.5L 325I 525I Interference
• 4.0L 740I Interference

Acura
• All except SLX Interference
• SLX Non Interference

Chrysler
• 1.4L, 1.5L & 1.6L Interference
• 1.7L Non-Interference
• 1.8L Interference
• 2.0L DOHC Interference
• 2.0L SOHC Interference
• 2.2L DOHC Interference
• 2.2L SOHC Non-Interference
• 2.22L SOHC Interference
• 2.3L Diesel Interference
• 2.4L DOHC Non-Interference (Valves may hit if camshafts turn out of time)
• 2.4L SOHC Interference
• 2.5L 4 Cyl. Non-Interference
• 2.5L V6 Interference
2.7L Interference
• 3.0L SOHC 12 Valve Engine Non-Interference
• 3.0L DOHC Interference
• 3.0L SOHC 24 Valve Engine Interference
• 3.2L Interference
3.3L Interference
• 3.5L Interference
3.8L Interference
• 4.0L Interference
5.7 Hemi Intereference

Fiat
• 1.3L 128 Series Interference
• 1.5L Stranda Interference
• 1.6L 124 Series Interference
• 1.8L 124 Series Interference
• 1.8L 131 Series, Brava Interference
• 2.0L Brava, Spider Interference

Ford
• 1.3L Non-Interference
• 1.6L DOHC Non-Interference
• 1.6L SOHC Interference
• 1.8L Non-Interference
• 1.9L Non-Interference
• 2.0L DOHC (Contour, Escape, Focus, Mystique, ZX2 & 1999-2002 Cougar) Non-Interference
• 2.0L DOHC (Probe) Interference
• 2.0L Diesel Interference
• 2.0L SOHC Gasoline (Escort, Focus & Tracer) Non-Interference
• 2.0L SOHC Gasoline (Capri, Pinto & Ranger) Non-Interference
• 2.2L Interference
• 2.3L Diesel Interference
• 2.3L SOHC Gasoline Non-Interference
• 2.4L Diesel Interference
• 2.5L SOHC 4 Cyl. Non-Interference
• 2.5L V6 Non-Interference
• 3.0L SOHC Interference
• 3.0L & 3.2L SHO Non-Interference
• 3.3L Interference

GM and Saturn
• 1.0L Interference
• 1.3L Interference
• 1.4L Non-Interference
• 1.5L Interference
• 1.6L (Chevette & 1000) Non-Interference
• 1.6L (LeMans) Non-Interference
• 1.6L (Tracker 16 Valve) Interference
• 1.6L DOHC (Aveo) Interference
• 1.6L DOHC (Nova) Non-Interference
• 1.6L SOHC (Nova) Non-Interference
• 1.8L Diesel Interference
• 1.8L Gasoline Non-Interference
1.9L Ecotec SOHC Intereference
1.9L Ecotec DOHC Intereference
• 2.0L Non-Interference
• 2.2L Diesel Interference
• 2.3L Non-Interference
• 3.0L Interference
• 3.2L Interference
• 3.4L Non-Interference
• 3.5L Non-Interference
3.6L Intereference

GEO
• 1.0L Interference
• 1.3L Interference
• 1.5L Interference
• 1.6L DOHC (1989-92 Prizm GSI) Non-Interference
• 1.6L DOHC (1989-97 Prizm Except 1989-92 GSI) Interference
• 1.6L DOHC (Storm) Interference
• 1.6L SOHC (Prizm) Non-Interference
• 1.6L SOHC (Storm) Non-Interference
• 1.6L SOHC 8 Valve Engine (Tracker) Non-Interference
• 1.6L SOHC 16 Valve Engine (Tracker) Interference
• 1.8L DOHC (Prizm) Interference
• 1.8L DOHC (Storm) Interference

Honda
• All Honda engines are interference except 3.0L & 3.2 which are Non-interference

Hyundai
• All Interference

Infinity
• 3.0L & 3.3L Interference

Isuzu
• 1.5L Interference
• 1.6L DOHC Interference
• 1.6L SOHC Non-Interference
• 1.8L Diesel Interference
• 1.8L DOHC Gasoline Interference
• 2.0L Interference
• 2.2L Diesel Interference
• n2.2L Gasoline Interference
• 2.3L Interference
• 2.6L Interference
• 3.2L Interference
• 3.5L Non-Interference

Jeep
• 2.0L Non-Interference
• 2.1L Diesel Interference
• 2.4L DOHC Interference
• 2.8L Diesel Interference

Kia
• 1.5L DOHC Interference
• 1.6L DOHC Interference
• 1.6L SOHC Non-Interference
• 1.8L DOHC Interference
• 2.0L DOHC Interference
• 2.0L SOHC Non-Interference
• 2.4L DOHC Interference
• 2.5L DOHC Interference
• 2.7L DOHC Interference
• 3.5L DOHC Interference

Lexus
• 2.5L Non-Interference
• 3.0L V6 Non-Interference
• 3.3L V6 Non-Interference
• 3.0L Inline 6 (1992-97) Non-Interference
• 3.0L Inline 6 VVT-i (1998-2006) Interference
• 4.0L Interference
• 4.3L Interference
• 4.7L Interference

Mazda
• 1.5L Non-Interference
• 1.6L Non-Interference
• 1.8L 4 Cyl. Non-Interference
• 1.8L V6 Non-Interference
• 2.0L Diesel Interference
• 2.0L DOHC (626, MX-6 & Protege) Non- Interference
• 2.0L DOHC (Tribute) Non-Interference
• 2.0L SOHC Non-Interference
• 2.2L Interference
• 2.3L 4 Cyl. (B2300) Non-Interference
• 2.3L V6 Non-Interference
• 2.5L 4 Cyl. (B2500) Non-Interference
• 2.5L V6 Non-Interference
• 3.0L DOHC Interference
• 3.0L SOHC Interference

Mercury
Villager 3.0 Non-Intereference
Villager 3.3 Non-Interference

Mitsubishi
• 1.5L Interference
• 1.6L DOHC Interference
• 1.6L SOHC Interference
• 1.8L Interference
• 2.0L DOHC Interference
• 2.0L SOHC Interference
• 2.3L Diesel Interference
• 2.4L DOHC Interference
• 2.4L SOHC Interference
• 3.0L DOHC Interference
• 3.0L SOHC 12 Valve Engine Non-Interference
• 3.0L SOHC 24 Valve Engine Interference
• 3.5L DOHC Interference
• 3.5L SOHC Interference
• 3.8L Interference

Nissan
• All Interference

Porsche
2.0L 924 Turbo Interference
2.5L 944 Interference
2.7L 944 Interference
3.0L 944 Interference
4.5L 928 Interference
4.7L 928 Interference
5.0L 928 Interference
5.4L 928 Interference

Subaru
• DOHC Interference
• SOHC Non-Interference

Suzuki
• 1.3L DOHC Interference
• 1.3L SOHC Interference
• 1.6L 8 Valve Engine Non-Interference
• 1.6L 16 Valve Engine Interference
• 2.0L DOHC Interference

Toyota
1.5L (1A-C, 3A-C & 3E) Interference
• 1.5L (3E-E & 5E-FE) Non-Interference
• 1.6L DOHC (4A-F & 4A-FE) Non-Interference
• 1.6L DOHC (4A-GE & 4A-GZE) Non-Interference
• 1.6L SOHC Non-Interference
• 1.8L Diesel Interference
• 1.8L DOHC Gasoline Interference
1.8L 7AFE, 4AFE, 4AF – Non Interference
• 2.0L Non-Interference
• 2.2L Diesel Interference
• 2.2L Gasoline Non-Interference
• 2.4L Diesel Interference
• 2.5L Non-Interference
• 2.8L Non-Interference
• 3.0L Inline 6 (Except 1998 2JZ-GE) Non-Interference
• 3.0L Inline 6 VVT-i (1998 2JZ-GE) Interference
• 3.0L V6 Non-Interference
• 3.3L 3MZ-FE V6 W/ V VTi  – Interference
• 3.4L Non-Interference
* 3.5L V-6 Non-Interference
• 4.7L Interference

Volkswagen
TDI 1.8L – 8 valve Non-Interference
2.0L – 8 valve Non-Interference (However there have been instances of bent valves)
16 valve diesels Interference
VR6 Interference

Volvo
B200 (E, F, G, GT, FT) Interference
B204 (E, F, GT, FT) Interference
B230E (high-compression) Interference
B230 Non American – Interference
B234 (F, G) Intereference
240DL 2.3 Non-Interference
B5XXX five-cylinder inline engines -Interference
6XXX six-cylinder engines Interference
FK Non-Interference engine
240 SOHC Non-interference
740 SOHC Non-interference
940 SOHC Non-interference
The 16 Valve Volvo engines are all Interference
850 Interference
960 Interference
S40 Interference
S/V/C 70 Interference
S60 Interference
S80 Interference
XC90’s Interference

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