Full Blown Stage 1 Short Block - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

sw20kosh · 02-05-2013, 09:07 PM

Quote:

Originally Posted by civdaddy

I had twinscrew aka "roots" blower on my si and the power came on linear and full boost did not happen until near redline because the blower is drive via a BELT from the motor

thats a centri sc

twinsrew and roots have instant boost at any rpm basically

FullBlown · 02-06-2013, 09:23 PM

Thanks guys, we can't want to put this thing in the car.

Tansey86 · 02-06-2013, 09:35 PM

Quote:

Originally Posted by FullBlown

Thanks guys, we can't want to put this thing in the car.

Are you guys gonna try and blow it up first?

FullBlown · 02-06-2013, 09:49 PM

We've already tried lol

coyote · 02-06-2013, 09:50 PM

Quote:

Originally Posted by FullBlown

Interesting.

No bowl in the top of those pistons.

Tansey86 · 02-06-2013, 09:50 PM

haha how high hp wise have you guys gotten? Just throw 30psi on e85 through the gtx35r

FullBlown · 02-06-2013, 10:02 PM

We are working on a fuel system. That is the main reason why we stopped. We maxed everything out.

Pure Automotive · 02-06-2013, 10:27 PM

Quote:

Originally Posted by FullBlown

We are working on a fuel system. That is the main reason why we stopped. We maxed everything out.

Bosche 044 pusher pump inline?

WingsofWar · 02-06-2013, 11:24 PM

curious as to why you're going with a no quench surface profile on your pistons. Are you ditching the DI? or have you found that the tumble profile on the stock pistons don't matter as much for your application even if your keeping the DI?

nix · 02-07-2013, 12:33 AM

Yeah looks like port only piston?

FullBlown · 02-07-2013, 09:11 AM

No, this will keep the DI. When we first discussed the design of the piston for the FA20 motor with arias, they felt that there wasn't a need for the quench area because they have tested similar designs on a porsche DI system without any issues or benefits.

Once we find some time to tear into our shop car again, we will have results shortly.

swift996 · 02-07-2013, 09:56 AM

Same bore x stroke? Sorry if I missed that somewhere. Personally, I'd love to see an overbore of this engine. I don't know what the OEM cylinder wall thresholds are.

FullBlown · 02-07-2013, 12:44 PM

Yes stock bore and stroke

OrbitalEllipses · 02-07-2013, 01:34 PM

Quote:

Originally Posted by FullBlown

Yes stock bore and stroke

Thought about boring or stroking it out?

02-06-2013, 11:24 PM	#37
WingsofWar MODERATOR-SAMA Join Date: Oct 2009 Drives: Swagtron Scooter Location: Seattle Posts: 2,685 Thanks: 345 Thanked 1,561 Times in 524 Posts Mentioned: 81 Post(s) Tagged: 0 Thread(s)	curious as to why you're going with a no quench surface profile on your pistons. Are you ditching the DI? or have you found that the tumble profile on the stock pistons don't matter as much for your application even if your keeping the DI? __________________

02-07-2013, 09:56 AM	#40
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 954 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	Same bore x stroke? Sorry if I missed that somewhere. Personally, I'd love to see an overbore of this engine. I don't know what the OEM cylinder wall thresholds are. __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

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02-06-2013, 09:23 PM	#30
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)	Thanks guys, we can't want to put this thing in the car.

02-06-2013, 09:49 PM	#32
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)	We've already tried lol

02-06-2013, 09:50 PM	#34
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)	haha how high hp wise have you guys gotten? Just throw 30psi on e85 through the gtx35r

02-06-2013, 10:02 PM	#35
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)	We are working on a fuel system. That is the main reason why we stopped. We maxed everything out.

02-07-2013, 09:11 AM	#39
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)	No, this will keep the DI. When we first discussed the design of the piston for the FA20 motor with arias, they felt that there wasn't a need for the quench area because they have tested similar designs on a porsche DI system without any issues or benefits. Once we find some time to tear into our shop car again, we will have results shortly.

02-07-2013, 12:44 PM	#41
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)	Yes stock bore and stroke

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