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

Matador · 05-26-2012, 01:53 PM

I don't know if I might have missed this in the deluge of new information, but has any of the guys that have measured, taken apart, swapped the 86/BRZ/FR-S been able to get the dimensions on the FA20 boxer engine?

l*w*h but most importantly weight (dry or wet, doesn't matter) is what I'd like to know.

Anyone?

Matador · 05-28-2012, 10:01 AM

Sooo, nobody then?

Jonny Rochester · 05-28-2012, 10:31 AM

86mm x 86mm. Bore and stroke. (Same as 3S-GE I'm told).

The Subaru FB20 has a longer stroke, so the FA20 is recast as a different block.

Matador · 05-28-2012, 03:53 PM

Thanks, but not boreXstroke. Exterior dimensions.

Calum · 05-28-2012, 05:53 PM

About this wide, by this tall, by this high. *holds out hands*

civicdrivr · 05-28-2012, 05:53 PM

Quote:

Originally Posted by Calum

About this wide, by this tall, by this high. *holds out hands*

Sasquachulator · 05-28-2012, 06:16 PM

Shouldnt it be pretty simlar to an FB or the EJ motors (ok well maybe closer to the FB than the EJ)?

Dimman · 05-28-2012, 06:23 PM

Matador, from what it sounds like, the exterior of the FB and FA blocks are probably the same. Height reduction from a lower intake manifold, and a shallower steel oil pan are probably the only differences. Width is probably identical since the stroke is only 4mm shorter and they wouldn't bother to recast a smaller block for that. Casting-wise they would only be using different cores inside the same main dies anyways. Length is also going to be only accessory differences, I bet.

So it will fit inside any space that an FB will.

Probably.

Lateapex · 07-31-2013, 12:20 AM

bump for this info?

Turdinator · 07-31-2013, 01:45 AM

Quote:

Originally Posted by Dimman

Matador, from what it sounds like, the exterior of the FB and FA blocks are probably the same. Height reduction from a lower intake manifold, and a shallower steel oil pan are probably the only differences. Width is probably identical since the stroke is only 4mm shorter and they wouldn't bother to recast a smaller block for that. Casting-wise they would only be using different cores inside the same main dies anyways. Length is also going to be only accessory differences, I bet.

So it will fit inside any space that an FB will.

Probably.

I imagine the heads will be different though and that may change the width a bit.

OP the engine is pretty accessible with the hood open. I would imagine you could get some pretty accurate measurements with the motor still in place if you wanted to. Just not the weight.

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05-28-2012, 10:31 AM	#3
Jonny Rochester Member Join Date: May 2012 Drives: 1983 Corolla Levin Location: Hobart TAS Posts: 25 Thanks: 0 Thanked 12 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	86mm x 86mm. Bore and stroke. (Same as 3S-GE I'm told). The Subaru FB20 has a longer stroke, so the FA20 is recast as a different block.

05-28-2012, 05:53 PM	#5
Calum That Guy Join Date: Dec 2011 Drives: 2013 asphalt FRS MT Location: Halifax, Nova Scotia Posts: 4,865 Thanks: 5,058 Thanked 2,868 Times in 1,499 Posts Mentioned: 82 Post(s) Tagged: 1 Thread(s)	About this wide, by this tall, by this high. holds out hands

05-28-2012, 06:16 PM	#7
Sasquachulator Pavement Grey Join Date: Dec 2011 Drives: 2020 Toyota Camry XSE, 2017 BMW X1 Location: Calgary Posts: 3,116 Thanks: 109 Thanked 2,256 Times in 1,221 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Shouldnt it be pretty simlar to an FB or the EJ motors (ok well maybe closer to the FB than the EJ)?

07-31-2013, 12:20 AM	#9
Lateapex Member Join Date: Jan 2013 Drives: WRB BRZ Location: Australia Posts: 25 Thanks: 7 Thanked 6 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	bump for this info?

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