New FR-S BRZ Technology Info! Engine specs, CoG, Drag Coefficient, Dimensions, etc. - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Abflug · 11-02-2011, 01:48 PM

THIS DAILY INFORMATION FLOOD IS SO SICK!!

THANK YOU!

ichitaka05 · 11-02-2011, 01:48 PM

Quick translation of yellow writing (due to work is killing me

)

"Driver can control/adjust front & rear weight.
But driver cannot control/adjust center gravity, so we have focused on low center gravity."

bottom big white letters

"High focus of driver control f/r weight ratio"

wanted to translate more... but gtg, before my boss find out

Matador · 11-02-2011, 01:49 PM

Quote:

Originally Posted by skinsfn36

12.5:1 will make boosting safely on the stock internals very difficult, probably why we don't have a TRD FI option yet

Direct Injection is a different ball game.

WingsofWar · 11-02-2011, 01:50 PM

this website is like crack...

i get high sitting here reading info
im going to go through withdraws if this keeps up

Sparkplug · 11-02-2011, 01:51 PM

Quote:

Originally Posted by WingsofWar

this website is like crack...

i get high sitting here reading info
im going to go through withdraws if this keeps up

Same here... it makes me feel like your avatar.

SUB-FT86 · 11-02-2011, 01:52 PM

Quote:

Originally Posted by madfast

i expected a much flatter torque curve. is this D-4S related perhaps? in the literature there is talk of the engine using a mix of DI and PI in low and mid rpm, and DI only in high rpm...

So let me get this straight. The engine torque is peaky rather than flat and rich? If so I hate that shit.

Ryephile · 11-02-2011, 01:55 PM

Quote:

Originally Posted by madfast

i expected a much flatter torque curve. is this D-4S related perhaps? in the literature there is talk of the engine using a mix of DI and PI in low and mid rpm, and DI only in high rpm...

The graph shows a "before" and "after" D4-S, with a 20NM gain and 10KW gain by using D4-S. The torque curve shape itself is more a function of the ports and combustion chamber [the main items that affect VE].

Thanks for the translation; it makes sense technically. DI can control cold-start and WOT combustion much better than PI. PI would be used mainly during low and medium load cruising, where stoich is relevant and wall-wetting or knock isn't an issue.

I still want some real numbers bolted on that graph to make it logical. At this point, based on the written specs on the scan, the dyno graph might actually be an "example" of how D4-S is effective, not the actual FA20 engine output.

WingsofWar · 11-02-2011, 01:55 PM

power output reminds me of the Japanese 80s.

so much nostalgic win.

Dave-ROR · 11-02-2011, 01:59 PM

Quote:

Originally Posted by WingsofWar

^ i wonder if its even necessary. the battery is already mid mounted on the firewall

I wouldn't bother unless it's in front of the axle. It'll help a little but I wouldn't want it behind the rear axle. Properly securing the box so it passes tech seems to be something most people can't do (I've failed a TON of relocated batteries before for not insulating the pos term, having a solid box, mounting a box without huge fender washers, etc).

KaliKev · 11-02-2011, 01:59 PM

So with so much compression, does that mean FI is most likely a no no?

Ryephile · 11-02-2011, 02:01 PM

Quote:

Originally Posted by KaliKev

So with so much compression, does that mean FI is most likely a no no?

Light boost [perhaps as much as 10PSIg] would be possible, assuming the rest of the engine can cope with the BMEP increase. DI improves chemical quench remarkably [as in, less knock for a given dynamic compression ratio]

Dave-ROR · 11-02-2011, 02:02 PM

Quote:

Originally Posted by KaliKev

So with so much compression, does that mean FI is most likely a no no?

In a normal motor you'd have to be really careful and probably upgrade internals before too long (and lower comp). With DI, I have no idea as I'm not anywhere near familar enough with DI to say.

WingsofWar · 11-02-2011, 02:03 PM

^ best option is to do a stroker kit and raise the stroke path maybe different pistons and lower the CR.

Much like what the mazdaspeed 3 does, with a small bore and long stroke to bring the CR down to 9.5:1 Direct Injection.

I cant seem much room for forced induction on stock internals.

Spaceywilly · 11-02-2011, 02:04 PM

Quote:

Originally Posted by FBS

Took another look...

I'd love to know what that graph on the 3rd page is all about

Torque and hp curves. Comparing D4S and non d4s

edit... Didn't see there was a page 2

11-02-2011, 01:48 PM	#58
ichitaka05 Site Moderator Join Date: Oct 2009 Drives: ichi 86 Project Location: Middle of No where Posts: 20,965 Thanks: 7,663 Thanked 19,051 Times in 8,326 Posts Mentioned: 677 Post(s) Tagged: 27 Thread(s)	Quick translation of yellow writing (due to work is killing me ) "Driver can control/adjust front & rear weight. But driver cannot control/adjust center gravity, so we have focused on low center gravity." bottom big white letters "High focus of driver control f/r weight ratio" wanted to translate more... but gtg, before my boss find out __________________

11-02-2011, 01:50 PM	#60
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)	this website is like crack... i get high sitting here reading info im going to go through withdraws if this keeps up __________________

11-02-2011, 01:55 PM	#64
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)	power output reminds me of the Japanese 80s. so much nostalgic win. __________________

11-02-2011, 02:03 PM	#69
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)	^ best option is to do a stroker kit and raise the stroke path maybe different pistons and lower the CR. Much like what the mazdaspeed 3 does, with a small bore and long stroke to bring the CR down to 9.5:1 Direct Injection. I cant seem much room for forced induction on stock internals. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Official FT-86 Specs / Info Thread	Hachiroku	Scion FR-S / Toyota 86 GT86 General Forum	203	09-09-2019 10:43 PM
FT-86 / FR-S size dimensions compared to Genesis, Civic, Sction tC, etc	JDMinc	FR-S / BRZ vs....	559	05-15-2014 07:50 PM
Engine technology thread.	Dimman	Engine, Exhaust, Transmission	762	04-12-2012 02:18 PM
Ducati 1199 Superquadro engine specs	RRnold	Other Vehicles & General Automotive Discussions	9	11-21-2011 01:36 AM
86 Drag car?!?!	MtnDrvr86	Other Vehicles & General Automotive Discussions	5	01-14-2010 06:35 PM

11-02-2011, 01:48 PM	#57
Abflug Senior Member Join Date: Feb 2010 Drives: MR2 Location: Land des Quattro Posts: 606 Thanks: 174 Thanked 50 Times in 28 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	THIS DAILY INFORMATION FLOOD IS SO SICK!! THANK YOU!

11-02-2011, 01:59 PM	#66
KaliKev FT86 News Addict Join Date: Sep 2011 Drives: Toyota FJ Location: United States Posts: 386 Thanks: 3 Thanked 42 Times in 26 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	So with so much compression, does that mean FI is most likely a no no?

User Name		Remember Me?
Password