Can Someone please explain A/R for Turbos

LightningWolf · 12-14-2005, 03:51 PM

We need a turbo for dummies sticky on here.

Can someone please explain this? Thank you.

skidmarkracing · 12-14-2005, 04:39 PM

http://www.turbobygarrett.com/turbob...tech102.html#b

Turbodiesel · 12-14-2005, 05:06 PM

These guys are the only site I have found with a ton of info that you need, and can use.

http://www.forcedinductions.com/help.htm

http://www.forcedinductions.com/helpadvanced.htm

gasguzzler · 12-14-2005, 07:50 PM

In an abbreviated for dummies:

A larger A/R turbine housing will usually mean more top end flow at the cost of a slightly slow spool time.

A smaller A/R turbine housing will usually spool quicker, but will run out of exhaust flow up top sooner.

The A/R ratio is fully explained in the turbobygarrett site link above. It also relates to the size of the turbine wheel, so not all .96 A/R housings are the same size nor do they all flow the same.

FMOS Racing · 12-15-2005, 10:08 AM

Good point to bring up about the A/R being relative, Brian.

The 1.50 A/R turbine on my large frame turbo has probably 5 times the volume of the 1.31 A/R turbine on the T04 frame.

12-14-2005, 03:51 PM	#1 (permalink)
LightningWolf NLOC Member: 1270 Paid Member Join Date: Feb 2001 Location: Hanson, Ma Posts: 2,542 NLOC member #: 1270 View this user's gallery iTrader: 3 / 100%	Can Someone please explain A/R for Turbos We need a turbo for dummies sticky on here. Can someone please explain this? Thank you. __________________ 1994 Ford Lightning #2340 White Race Truck and Toy 2002 Ford F250 Superduty Daily Driver 1998 Honda Superhawk VTR1000 Source of all my speed fixes until the Lightning is finished

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12-14-2005, 04:39 PM	#2 (permalink)
skidmarkracing My wife says i'm retarded Join Date: Dec 2005 Location: Wylie, TX Posts: 1,035 View this user's gallery iTrader: 12 / 100%	http://www.turbobygarrett.com/turbob...tech102.html#b

12-14-2005, 05:06 PM	#3 (permalink)
Turbodiesel Registered User Join Date: Nov 2005 Posts: 44 View this user's gallery iTrader: 0 / 0%	These guys are the only site I have found with a ton of info that you need, and can use. http://www.forcedinductions.com/help.htm http://www.forcedinductions.com/helpadvanced.htm

12-14-2005, 07:50 PM	#4 (permalink)
gasguzzler Grasshoppa' Join Date: Feb 2001 Location: Demotte, IN/Escanaba, MI Posts: 872 View this user's gallery iTrader: 0 / 0%	In an abbreviated for dummies: A larger A/R turbine housing will usually mean more top end flow at the cost of a slightly slow spool time. A smaller A/R turbine housing will usually spool quicker, but will run out of exhaust flow up top sooner. The A/R ratio is fully explained in the turbobygarrett site link above. It also relates to the size of the turbine wheel, so not all .96 A/R housings are the same size nor do they all flow the same.

12-15-2005, 10:08 AM	#5 (permalink)
FMOS Racing Vrrooooooooooom Join Date: Jan 2000 Posts: 12,338 View this user's gallery iTrader: 3 / 100%	Good point to bring up about the A/R being relative, Brian. The 1.50 A/R turbine on my large frame turbo has probably 5 times the volume of the 1.31 A/R turbine on the T04 frame.