FBM/Arias Forged Pistons - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FullBlown · 10-19-2012, 01:33 PM

We've been working with Arias for years on custom pistons. Today we received our F20a pistons.

This is the same design that Arias use in their VR6 and Porsche DI motors with great success.

We will be releasing our 1000hp rods shortly

86mm bore 9.5:1 Compression with HD wrist pins

Tansey86 · 10-19-2012, 01:56 PM

Mother of god

Guff · 10-19-2012, 02:04 PM

Cheddar · 10-19-2012, 02:05 PM

replace head studs with ARP studs and turn up the boost to 30lbs and lets see what happens.

APM Racing · 10-19-2012, 02:31 PM

Arias are great people! Elmer is the man for us over there!

-Mark

Tansey86 · 10-19-2012, 04:28 PM

What amount of boost is safe with 9.5:1CR? and what are these rated to hp wise?

rusty959 · 10-19-2012, 06:58 PM

Since Im sure I'm not the only person thinking it I might as well go ahead and ask;
What is expected to happen with the DI mixture since it doesn't have the "special" shape as the factory piston?
Apparently not all spray patterns for DI systems are the same or so I've heard, etc etc.

FullBlown · 10-19-2012, 09:59 PM

This was our concern as well but Arias have been building pistons forever and they assured us that it will be fine.

We will be testing these as soon as we get a chance.

Tansey86 · 10-19-2012, 09:59 PM

With this being an open deck block, is there even a potential for it to be a high HP engine?

FullBlown · 10-19-2012, 10:00 PM

Quote:

Originally Posted by Tansey86

What amount of boost is safe with 9.5:1CR? and what are these rated to hp wise?

We've used 9.5 - 10:1 on builds over 30psi before. On pump gas, I am going to guess somewhere around 450-500hp.

FullBlown · 10-19-2012, 10:02 PM

Quote:

Originally Posted by Tansey86

With this being an open deck block, is there even a potential for it to be a high HP engine?

I don't see the open deck being a problem but it is too early to tell.

Tansey86 · 10-19-2012, 10:29 PM

Quote:

Originally Posted by FullBlown

I don't see the open deck being a problem but it is too early to tell.

Im assuming there will be 1000hp pistons to match the rods?

FullBlown · 10-19-2012, 10:43 PM

They will be built to handle 1000hp but I don't think we will try for that. I love the way this car drives and I've turned too many of our cars into race cars lol

Tansey86 · 10-19-2012, 11:00 PM

Id be happy with a 600wheel 93 pump car.

10-19-2012, 01:33 PM	#1
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	FBM/Arias Forged Pistons We've been working with Arias for years on custom pistons. Today we received our F20a pistons. This is the same design that Arias use in their VR6 and Porsche DI motors with great success. We will be releasing our 1000hp rods shortly 86mm bore 9.5:1 Compression with HD wrist pins

10-19-2012, 06:58 PM	#7
rusty959 Senior Member Join Date: Jun 2012 Drives: DGM BRZ limited Location: Indiana Posts: 366 Thanks: 98 Thanked 145 Times in 95 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Since Im sure I'm not the only person thinking it I might as well go ahead and ask; What is expected to happen with the DI mixture since it doesn't have the "special" shape as the factory piston? Apparently not all spray patterns for DI systems are the same or so I've heard, etc etc. __________________

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10-19-2012, 01:56 PM	#2
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 528 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Mother of god

10-19-2012, 02:05 PM	#4
Cheddar Saving them pennies... Join Date: Apr 2012 Drives: 2013 FR-S Location: Miami, FL Posts: 641 Thanks: 44 Thanked 178 Times in 111 Posts Mentioned: 17 Post(s) Tagged: 3 Thread(s)	replace head studs with ARP studs and turn up the boost to 30lbs and lets see what happens.

10-19-2012, 02:31 PM	#5
APM Racing Junior Member Join Date: Aug 2012 Drives: 04 Evo: 07 STI: 10 EvoX: 13 FRS Location: United States Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Arias are great people! Elmer is the man for us over there! -Mark

10-19-2012, 04:28 PM	#6
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 528 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	What amount of boost is safe with 9.5:1CR? and what are these rated to hp wise?

10-19-2012, 09:59 PM	#8
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	This was our concern as well but Arias have been building pistons forever and they assured us that it will be fine. We will be testing these as soon as we get a chance.

10-19-2012, 10:43 PM	#13
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	They will be built to handle 1000hp but I don't think we will try for that. I love the way this car drives and I've turned too many of our cars into race cars lol

10-19-2012, 11:00 PM	#14
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 528 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Id be happy with a 600wheel 93 pump car.

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