Interference or Non-Interference Engine - Toyota Yaris Forums

TheMaskedMan · 03-26-2007, 02:04 PM

Is the engine in a 2007 Yaris a interference or non-interference engine?

clayky · 03-26-2007, 03:31 PM

Quote:

Originally Posted by TheMaskedMan

Is the engine in a 2007 Yaris a interference or non-interference engine?

Probably interference being it's chain-driven. On the other hand I doubt you'll ever have to worry about it.

PetersRedYaris · 03-26-2007, 06:17 PM

Why do you wonder? Chain driven or belt driven has nothing to do with it being interference or non-interference as both can be either. Most modern engines are interference, however, I wouldn't worry about it. The yaris is chain driven with no scheduled maintainance.

acrbill · 03-26-2007, 06:38 PM

With 10.5:1 compression its a safe bet to say its interference.

Kitt · 03-26-2007, 06:38 PM

has anyone ever wonder why did they designed it chain driven? nothing against that of course... just wondering...

Moose · 03-26-2007, 06:53 PM

It's interference.

Chain driven engines are more reliable (especially with variable timing setups) and cheaper to maintain than belt driven engines.

jdubau55 · 03-26-2007, 09:21 PM

Unless the chain breaks at highway speeds....then you're screwed.

Kitt · 03-26-2007, 10:20 PM

that must hurt

fu_im_from_texas · 03-26-2007, 11:12 PM

Before this I had a '94 geo prism (toyota corrolla). The timing belt had to be changed every 60k miles, and the water pump failed at 60k intervals too.

tekmoe · 03-26-2007, 11:25 PM

Quote:

Originally Posted by fu_im_from_texas

Before this I had a '94 geo prism (toyota corrolla). The timing belt had to be changed every 60k miles, and the water pump failed at 60k intervals too.

yeah, my 86 gti had a timing belt. never again will i own a car with a timing belt.

chain driven all the way!

PetersRedYaris · 03-26-2007, 11:42 PM

I wouldn't have bought a Yaris if it had a timing belt. Low maintainance was a big selling point for me. Timing belts are a scam IMO. It pisses me off how a car company can design a car with a $500-$600 60,000 mile belt change. Toyota is of course not that expensive as they are the only company to offer flat rate timing belt changes depending on 4, 6, or 8 cylinder. I've owned Mitsubishi (Montero) and Nissan (Pathfinder) vehicles and $700 is not uncommon for a T-belt service. I get angry just thinking about it.

TheMaskedMan · 03-27-2007, 08:06 AM

How often do you have to change the chain? and if it breaks are you screwed like you would be if a belt broke?

Nautical Yaris S · 03-27-2007, 01:45 PM

no timing chain maintenece is listed in the owners manual.

think of the older cars from the 60s and stuff. those engines still run w/ no overhaul because they all have chain-driven cams. unless the chain goes out of tolerence and skips a gear, you are fine. but i cannot see that happening unless you are running 22lbs of boost, or a 200 shot of Nitrous... bboth of which would blow the bottom end before the timing chain broke :)

redyaris · 03-28-2007, 10:09 AM

OMG...no timing belt change required?!?!?!? There is a GOD!

It just gets better and better. Im glad I bought this little car.

03-26-2007, 02:04 PM	#1
TheMaskedMan . Drives: 92 Toyota Camry Join Date: Feb 2007 Location: Canada Posts: 5	Interference or Non-Interference Engine Is the engine in a 2007 Yaris a interference or non-interference engine?

03-26-2007, 06:38 PM	#4
acrbill Drives: Polar White Hatch Join Date: Nov 2006 Location: chicago Posts: 407	With 10.5:1 compression its a safe bet to say its interference. __________________ ChinoCharles Intake supporter.

03-26-2007, 06:38 PM	#5
Kitt View User's Garage Drives: Thndr cl metallic HB 3 drs '05 Join Date: Mar 2006 Location: Panama City, Panama Posts: 793	has anyone ever wonder why did they designed it chain driven? nothing against that of course... just wondering... __________________ 10 years... alive and kickin'!!

03-26-2007, 06:53 PM	#6
Moose Resident Redneck Drives: 07 Polar White Yaris Sedan 5M Join Date: Jul 2006 Location: Cumming, GA Posts: 265	It's interference. Chain driven engines are more reliable (especially with variable timing setups) and cheaper to maintain than belt driven engines. __________________ My other rides: 2003 Honda Civic LX Coupe 5M- S/C K24 w/ LSD coming soon! 1999 Honda Civic EX Coupe 5M w/ B18 powaa 1985 Toyota Celica GTS Coupe 5M- track whip http://www.importlounge.com

03-26-2007, 10:20 PM	#8
Kitt View User's Garage Drives: Thndr cl metallic HB 3 drs '05 Join Date: Mar 2006 Location: Panama City, Panama Posts: 793	that must hurt __________________ 10 years... alive and kickin'!!

03-26-2007, 06:17 PM	#3
PetersRedYaris View User's Garage Drives: 2005 Scion xB Join Date: Nov 2006 Location: The Black Hills of South Dakota Posts: 1,059	Why do you wonder? Chain driven or belt driven has nothing to do with it being interference or non-interference as both can be either. Most modern engines are interference, however, I wouldn't worry about it. The yaris is chain driven with no scheduled maintainance.

03-26-2007, 09:21 PM	#7
jdubau55 Drives: 2007 White Yaris LB 5 Spd. Join Date: Feb 2007 Location: Blacksburg, VA Posts: 451	Unless the chain breaks at highway speeds....then you're screwed.

03-26-2007, 11:12 PM	#9
fu_im_from_texas Drives: Liftback Join Date: Jan 2007 Location: Texas Posts: 137	belts are a pain! Before this I had a '94 geo prism (toyota corrolla). The timing belt had to be changed every 60k miles, and the water pump failed at 60k intervals too.

03-26-2007, 11:42 PM	#11
PetersRedYaris View User's Garage Drives: 2005 Scion xB Join Date: Nov 2006 Location: The Black Hills of South Dakota Posts: 1,059	I wouldn't have bought a Yaris if it had a timing belt. Low maintainance was a big selling point for me. Timing belts are a scam IMO. It pisses me off how a car company can design a car with a $500-$600 60,000 mile belt change. Toyota is of course not that expensive as they are the only company to offer flat rate timing belt changes depending on 4, 6, or 8 cylinder. I've owned Mitsubishi (Montero) and Nissan (Pathfinder) vehicles and $700 is not uncommon for a T-belt service. I get angry just thinking about it.

03-27-2007, 08:06 AM	#12
TheMaskedMan . Drives: 92 Toyota Camry Join Date: Feb 2007 Location: Canada Posts: 5	How often do you have to change the chain? and if it breaks are you screwed like you would be if a belt broke?

03-27-2007, 01:45 PM	#13
Nautical Yaris S 1.5L of FURY! Drives: 2007 Yaris S Sedan, 5 speed Join Date: Mar 2007 Location: Central Cali Posts: 13	no timing chain maintenece is listed in the owners manual. think of the older cars from the 60s and stuff. those engines still run w/ no overhaul because they all have chain-driven cams. unless the chain goes out of tolerence and skips a gear, you are fine. but i cannot see that happening unless you are running 22lbs of boost, or a 200 shot of Nitrous... bboth of which would blow the bottom end before the timing chain broke :)

03-28-2007, 10:09 AM	#14
redyaris Shiny Chromey Coolness View User's Garage Drives: 2007 Toyota Yaris Liftback Join Date: Feb 2007 Location: Orlando, FL Posts: 982	OMG...no timing belt change required?!?!?!? There is a GOD! It just gets better and better. Im glad I bought this little car. __________________ Bringin the Bling to Yarisworld

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