Compression ratio 12.5:1. Bye-bye Super charger & Turbo build? - Page 10 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Syldrin · 11-09-2011, 06:27 PM

how does KW convert to Wheel horse power? like what would the numbers be hp wise?

ryridesmotox · 11-09-2011, 06:39 PM

Quote:

Originally Posted by syldrin

how does KW convert to Wheel horse power? like what would the numbers be hp wise?

1 kilowatt = 1.34102209 hp

also Camp Pendleton huh? I'm 5 minutes south of there in Carlsbad... If you are a good marine (and over 21) you know where Henesseys, the Coyote, and the Boar's Crossing are... I'm pretty sure that their coordinates are taught in basic training.

Syldrin · 11-09-2011, 06:56 PM

i am not a marine i take care of them when they decide to go and get shot. i'm a hospital corpsman. but ya man i'm 25. my gps will find it.

ryridesmotox · 11-09-2011, 07:11 PM

Quote:

Originally Posted by syldrin

i am not a marine i take care of them when they decide to go and get shot. i'm a hospital corpsman. but ya man i'm 25. my gps will find it.

Ahh gotcha, well dude, I'm sure they appreciate your services more than the rest of us ever could. I was an EMT for many years, if/when you get out, I got a hook up at Pacific Ambulance, if you want to stay in the same field.

Syldrin · 11-09-2011, 10:47 PM

Quote:

Originally Posted by ryridesmotox

Ahh gotcha, well dude, I'm sure they appreciate your services more than the rest of us ever could. I was an EMT for many years, if/when you get out, I got a hook up at Pacific Ambulance, if you want to stay in the same field.

Yea they love us. It's a very humbling experiance to be in the same field as the legends I've come after. Pacific ambulance you say? I will most definatley would be interested that sounds amazing!

LeeT · 11-12-2011, 11:50 PM

No need to get your panties in a bunch people. The dynamic compression ratio is what you need to consider.

arghx7 · 11-14-2011, 02:26 AM

Quote:

Originally Posted by LeeT

No need to get your panties in a bunch people. The dynamic compression ratio is what you need to consider.

Sigh. Dynamic compression ratio. Don't take this the wrong way, but that's really not a metric that engineers use at all in practice. It's just stuff that people talk about on internet forums.

It is the brake mean effective pressure and indicated mean effective pressure, and indicator diagrams that are used in practice. Those require cylinder pressure transducers to actually use.

LeeT · 11-14-2011, 07:52 PM

Quote:

Originally Posted by arghx7

Sigh. Dynamic compression ratio. Don't take this the wrong way, but that's really not a metric that engineers use at all in practice. It's just stuff that people talk about on internet forums.

It is the brake mean effective pressure and indicated mean effective pressure, and indicator diagrams that are used in practice. Those require cylinder pressure transducers to actually use.

Don't worry, I didn't take it the wrong way. I don't mind technical discussion (bickering or not) :happy0180:.

I was referring to dynamic compression ratio (DCR) because I thought this thread was about boosting the engine. Looking back a few pages, I see that this thread has sort of turned into a discussion of power output and might be the reason behind your post, but I digress.

Solely looking at the static compression ratio (SCR) of 12.5:1 isn't the best way of determining if an engine can avoid detonation under boost. It simply is the ratio of cylinder volume at bottom dead center (sweep volume) divided by top dead center. However, this isn't the compression ratio the engine sees when its running. DCR is the compression ratio when you take into consideration the crank's position when the intake valve closes. The piston will already be traveling upwards when the intake valve closes, resulting in a smaller sweep volume. Because of this, DCR is always less than SCR. Simply put, there is less "squeeze" on the mixture, and therefore less heat, and subsequently less risk of detonation.

Snaps · 11-15-2011, 12:52 AM

Quote:

Originally Posted by quik1987

Like this?

Similar... Without the turbo but with some intake plenums and a filter

Quote:

Originally Posted by cyde01

I'd like to also some day, but i have a bad feeling this car is gonna be dbw. Lets hope someone makes a good itbs kit and an ecu that can tune it.

I'm sure it can't be too hard to convert throttle bodies to dbw. AFAIK dbw is essentially a stepper motor that controls throttle. Making an adaptor for it to hook up to ITB's shouldn't be hard, then you just have to get an ECU to control it (of which IIRC there are quite a few that can control both dbw and ITB's).

WingsofWar · 11-15-2011, 07:26 PM

You jelly brz/frs has cant tarbo

Kostamojen · 11-15-2011, 07:49 PM

Thats a hellofa photoshop job right there.

Snaps · 11-15-2011, 08:10 PM

^ +1

WoW... You's crazy....

KaliKev · 11-15-2011, 08:27 PM

Allch Chcar · 11-15-2011, 09:26 PM

Geez WoW, where did you get that?

11-15-2011, 07:26 PM	#136
WingsofWar MODERATOR-SAMA Join Date: Oct 2009 Drives: Swagtron Scooter Location: Seattle Posts: 2,685 Thanks: 345 Thanked 1,562 Times in 524 Posts Mentioned: 81 Post(s) Tagged: 0 Thread(s)	You jelly brz/frs has cant tarbo Attached Images __________________

11-15-2011, 08:10 PM	#138
Snaps Supra Owner Join Date: Sep 2010 Drives: 1995 Toyota Supra UK Spec Location: New Zealand Posts: 440 Thanks: 0 Thanked 6 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	^ +1 WoW... You's crazy.... __________________

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11-09-2011, 06:27 PM	#127
Syldrin Troll Feeder Join Date: Nov 2011 Drives: boosted scion tc. Location: camp pendleton Posts: 568 Thanks: 14 Thanked 11 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	how does KW convert to Wheel horse power? like what would the numbers be hp wise?

11-09-2011, 06:56 PM	#129
Syldrin Troll Feeder Join Date: Nov 2011 Drives: boosted scion tc. Location: camp pendleton Posts: 568 Thanks: 14 Thanked 11 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	i am not a marine i take care of them when they decide to go and get shot. i'm a hospital corpsman. but ya man i'm 25. my gps will find it.

11-12-2011, 11:50 PM	#132
LeeT Member Join Date: Jul 2011 Drives: 2011 Mustang GT Location: Columbus, OH Posts: 28 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	No need to get your panties in a bunch people. The dynamic compression ratio is what you need to consider.

11-15-2011, 07:49 PM	#137
Kostamojen Senior Member Join Date: Oct 2011 Drives: 1993 Impreza w/ WRX Swap + FWD! Location: Roseville, CA Posts: 2,071 Thanks: 217 Thanked 952 Times in 500 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Thats a hellofa photoshop job right there.

11-15-2011, 08:27 PM	#139
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)

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