FA20 Interference... - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

phm14 · 06-28-2012, 05:43 PM

or non?

jamal · 06-28-2012, 06:15 PM

Definitely. The valves can hit each other or the piston. It also uses a timing chain so you would have to put something together wrong for it to happen. Maybe you could get the valves to hit with avcs but I kind of doubt it with stock parts.

phm14 · 06-28-2012, 06:21 PM

Quote:

Originally Posted by jamal

Definitely. The valves can hit each other or the piston. It also uses a timing chain so you would have to put something together wrong for it to happen. Maybe you could get the valves to hit with avcs but I kind of doubt it with stock parts.

Thanks. Now the answer is easily search-able.

icemang17 · 07-02-2012, 07:18 PM

I doubt there are any 12.5 CR 4 valve head engines that are NOT interference.....

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06-28-2012, 06:15 PM	#2
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 367 Times in 205 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Definitely. The valves can hit each other or the piston. It also uses a timing chain so you would have to put something together wrong for it to happen. Maybe you could get the valves to hit with avcs but I kind of doubt it with stock parts.

07-02-2012, 07:18 PM	#4
icemang17 Senior Member Join Date: Jun 2012 Drives: Scion FR-S/ Subaru BRZ Location: Stockton CA Posts: 178 Thanks: 2 Thanked 104 Times in 53 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I doubt there are any 12.5 CR 4 valve head engines that are NOT interference.....

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