1zz TB question - Toyota Yaris Forums

rabbito · 02-11-2017, 09:20 AM

i failed to install the 1zz throttle body due to...
1. fu*ken coolant hose being too short and couldnt reach the throttle body..😣
2. i wanted to use stock intake box with plastic hose but couldnt fit over 60mm..lol.. 😥

is anybody using stock airbox for 1zz 60mm tb? i custom ordered stainless steel intake 2.5" from a shop to try to make it possible...(picture below..sorry for sucky drawing..) 😆

if not..how is your car running on normal intake + 1zz throttle body??

im trying to use stock box because i hate losing low end torque..i had hks intake which lost low end and gained hi end

20170209_151904.jpg Screenshot_20170211-211627.png

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SirDigby · 02-11-2017, 11:53 AM

I took a piece of 90 degree copper tubing and plugged the coolant lines together around the corner of the head by-passing the throttle body. you would need to replace the hoses, at least 1, with aftermarket tubing. if you want to use stock air box /w accordion rubber duct, I've read that you can turn the tube around 180 degrees and it fits on 1zz. I have not tested. I have a injen CAI.

rabbito · 02-11-2017, 11:58 AM

Quote:

Originally Posted by SirDigby

I took a piece of 90 degree copper tubing and plugged the coolant lines together around the corner of the head by-passing the throttle body. you would need to replace the hoses, at least 1, with aftermarket tubing. if you want to use stock air box /w accordion rubber duct, I've read that you can turn the tube around 180 degrees and it fits on 1zz. I have not tested. I have a injen CAI.

dude...that was so helpful..thank you ✊✊✊✊

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ncp13 · 02-12-2017, 12:28 PM

I think you can do without the coolant lines on the TB in Thailand. :wink
You can probably leave them in loop.
Cooland flows there to prevent icing and sticking of the throtle plate with frozen condensation vapors.. not a case in your part of the world I think :)

tmontague · 02-12-2017, 01:07 PM

Yes, you can definitely by pass the coolant. I just bought generic coolant hose and cut it to fit for the 1zz TB. I didn't want to bypass the coolant as I live in a cold climate.

I had a TRD intake that came with a silicone coupling. It was too small to fit over the 1zz but i was able to stretch it to fit and clamp it downs with a zip tie. The stock hose is stiffer and not as easily stretched.

Fluxtasy · 02-15-2017, 12:05 AM

Hi rabbito, I think 1ZZ TB is 55mm unless your using Thai TB which I saw is 60mm. You could just purchase a longer coolant hose with custom length.

I'm using 1ZZ TB with stock air intake. Tooter mentioned that I could use the stock hose by just switching the ends but it is a very tight fit for 55mm. Might need to stretch/force it a little for TB side.

02-11-2017, 09:20 AM	#1
rabbito View User's Garage Drives: 2012 Toyota Yaris Sedan (Vios) Join Date: Dec 2015 Location: Thailand Posts: 291	1zz TB question i failed to install the 1zz throttle body due to... 1. fu*ken coolant hose being too short and couldnt reach the throttle body..😣 2. i wanted to use stock intake box with plastic hose but couldnt fit over 60mm..lol.. 😥 is anybody using stock airbox for 1zz 60mm tb? i custom ordered stainless steel intake 2.5" from a shop to try to make it possible...(picture below..sorry for sucky drawing..) 😆 if not..how is your car running on normal intake + 1zz throttle body?? im trying to use stock box because i hate losing low end torque..i had hks intake which lost low end and gained hi end 20170209_151904.jpg Screenshot_20170211-211627.png Sent from my SM-N920C using Tapatalk __________________ Brain: ATD E85 Timing Advance ECU Engine: 1JZ Injectors, Header, Center Pipe, K&N Drop In, E85 Injector Converter Suspension: Hankook Tires, Performance OEM replacement Shocks & Springs F: 1.5 B: 1.4, Mu Spec brake pads, Front tower & Rear sway bars, Rays nut & lock Electric: Volt Stablizer & Multi gauge obd2 Cosmetic: Toyota red emblem

02-12-2017, 01:07 PM	#5
tmontague View User's Garage Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012 Location: Caledonia Ont. Posts: 2,938	Yes, you can definitely by pass the coolant. I just bought generic coolant hose and cut it to fit for the 1zz TB. I didn't want to bypass the coolant as I live in a cold climate. I had a TRD intake that came with a silicone coupling. It was too small to fit over the 1zz but i was able to stretch it to fit and clamp it downs with a zip tie. The stock hose is stiffer and not as easily stretched. __________________ No one ever wants to give a Yaris the point by...

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02-11-2017, 11:53 AM	#2
SirDigby View User's Garage Drives: 2007 yaris 3 door Join Date: Sep 2015 Location: Denver, Colorado Posts: 1,000	I took a piece of 90 degree copper tubing and plugged the coolant lines together around the corner of the head by-passing the throttle body. you would need to replace the hoses, at least 1, with aftermarket tubing. if you want to use stock air box /w accordion rubber duct, I've read that you can turn the tube around 180 degrees and it fits on 1zz. I have not tested. I have a injen CAI.

02-12-2017, 12:28 PM	#4
ncp13 Drives: 01 Yaris TS Join Date: Jan 2017 Location: Athens Greece Posts: 92	I think you can do without the coolant lines on the TB in Thailand. :wink You can probably leave them in loop. Cooland flows there to prevent icing and sticking of the throtle plate with frozen condensation vapors.. not a case in your part of the world I think :)

02-15-2017, 12:05 AM	#6
Fluxtasy feed my pet View User's Garage Drives: Yaris Sedan '10 Join Date: Aug 2014 Location: Malaysia Posts: 128	Hi rabbito, I think 1ZZ TB is 55mm unless your using Thai TB which I saw is 60mm. You could just purchase a longer coolant hose with custom length. I'm using 1ZZ TB with stock air intake. Tooter mentioned that I could use the stock hose by just switching the ends but it is a very tight fit for 55mm. Might need to stretch/force it a little for TB side.