Is the Toyota 4A-FE engine interference or non?

Question

Is the Toyota 4A-FE engine interference or non?

Answer 1

Toyota 4a Engine

Answer 2

You are about to go through a dilemna with mechanics when you discuss this engine. Most books claim that the 4A-FE is an interference engine, and most mechanicswill agree. I went throught the same issue with my 1994 Mazda MPV V6. Luckily, your 4A-FE is a non-interference engine- like my MPV is. The clearance is close but it still is non-interference.



If its a GTS it has a 4A-GE which is DOHC and has 2 valve covers and 2 timing pulleys for the cams and it IS an interference engine...



If its not a GTS it has a 4A-FE which is also DOHC but! it only has 1 larger valve cover and 1 timing pulley for both cams the intake cam is driven via gears under the valve cover from the exhaust cam this is NOT a interference engine