any gain - Toyota Yaris Forums

1.5ty · 04-13-2010, 11:16 PM

Is there any gain if I take the ac pump and power steering pump off

Kiz · 04-13-2010, 11:41 PM

Of course! Any reduction in rotating mass for anything being driven by the crank (this includes everything from the crank pulley all the way through the drivetrain to your wheels) means more energy is available to put to the ground :)

Edit: there is no power steering pump in a Yaris, it's electrically assisted :P

1.5ty · 04-14-2010, 12:13 AM

Does any one know what kind of gain whould I be looking attorney lose the AC pump

Master Shake · 04-14-2010, 01:12 AM

Not enough to justify losing the AC.

shinlee · 04-14-2010, 02:03 AM

Just get a smaller belt, and bypass the a/c when out tracking it.

I posted a thread on this somewhere a couple years ago, lol, that has the size to go buy from Autozone :)

cali yaris · 04-14-2010, 02:16 AM

There is no power steering pump. The Yaris has electronically-assisted power steering.

If you take out the a/c system completely, you save 16 pounds and lose one pulley. It's a clutch pulley though, so there isn't THAT much drag on it when your a/c is off. But I did it.

Water pump too.

04-13-2010, 11:16 PM	#1
1.5ty Rollerskate View User's Garage Drives: 09 hb Join Date: Apr 2010 Location: Salisbury nc Posts: 59	any gain Is there any gain if I take the ac pump and power steering pump off

04-13-2010, 11:41 PM	#2
Kiz Drives: '06 Yaris Hatch and TT 300ZX Join Date: May 2009 Location: Brisbane, Australia Posts: 39	Of course! Any reduction in rotating mass for anything being driven by the crank (this includes everything from the crank pulley all the way through the drivetrain to your wheels) means more energy is available to put to the ground :) Edit: there is no power steering pump in a Yaris, it's electrically assisted :P __________________ '06 LB 2NZ-FE w/ NST crank pulley "No RWKW" \| '89 2+2 VG30DETT Z32 300ZX "Lots RWKW" ;)

04-14-2010, 02:16 AM	#6
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	There is no power steering pump. The Yaris has electronically-assisted power steering. If you take out the a/c system completely, you save 16 pounds and lose one pulley. It's a clutch pulley though, so there isn't THAT much drag on it when your a/c is off. But I did it. Water pump too. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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04-14-2010, 12:13 AM	#3
1.5ty Rollerskate View User's Garage Drives: 09 hb Join Date: Apr 2010 Location: Salisbury nc Posts: 59	Does any one know what kind of gain whould I be looking attorney lose the AC pump

04-14-2010, 01:12 AM	#4
Master Shake Drives: 2010 Red Yaris manual Join Date: Jan 2010 Location: VA Posts: 6	Not enough to justify losing the AC.

04-14-2010, 02:03 AM	#5
shinlee Drives: 07 liftback Join Date: Nov 2008 Location: austin tx Posts: 250	Just get a smaller belt, and bypass the a/c when out tracking it. I posted a thread on this somewhere a couple years ago, lol, that has the size to go buy from Autozone :)