1MZ-FE is non-interference
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From: Keith Lee on 19 Dec 2007 15:13 All: I just received this email from a Service Coordinator at my local Toyota dealership and repair place. It's now official that my 1998 Toyota Avalon engine is non-interference. Thank you to everyone who helped me with this question. Here is Mira's email below. Keith Lee Hi Keith, Your 1998 Avalon has a 6cylinder engine and a timing belt, this constitutes that your engine is non- interference. If you have any further questions please respond to this email or feel free to call us directly at the phone number listed below. Mira Winsby - Service Coordinator
From: JoeSpareBedroom on 19 Dec 2007 15:25 "Keith Lee" <cmarvel(a)NOSPAM.nethere.com> wrote in message news:pan.2007.12.19.20.13.03(a)NOSPAM.nethere.com... > All: > I just received this email from a Service Coordinator at my local Toyota > dealership and repair place. It's > now official that my 1998 Toyota Avalon engine is non-interference. Thank > you to everyone who helped me > with this question. Here is Mira's email below. > > Keith Lee So?
From: Jeff Strickland on 19 Dec 2007 15:27 I have to take issue with the comment. I can't say if the motor is a non-interference type or not, but the determining factor is not the presence of a timing belt. That is, simply using a belt as opposed to a chain does not prescribe interference or non-interference. It's possible that Toyota makes such a distinction, but this is not the determining factor in the grand scheme of things. Interference, or the lack of it, describes the ability of the pistons and valves to collide should something go astray. Interference is more accurately denoted by the compression ratio -- a low ratio will have more room in the combustion chamber for the piston and valve to peacefully co-exist. I have to wonder at the response you received because I do not expect the ability for the pistons and valves to collide to be related to the kind of valve timing mechanism. I suspect the motor is the non-interference type, but not because it uses a timing belt as opposed to a timing chain. "Keith Lee" <cmarvel(a)NOSPAM.nethere.com> wrote in message news:pan.2007.12.19.20.13.03(a)NOSPAM.nethere.com... > All: > I just received this email from a Service Coordinator at my local Toyota > dealership and repair place. It's > now official that my 1998 Toyota Avalon engine is non-interference. Thank > you to everyone who helped me > with this question. Here is Mira's email below. > > Keith Lee > > > > Hi Keith, > Your 1998 Avalon has a 6cylinder engine and a timing belt, this > constitutes that your engine is non- > interference. If you have any further questions please respond to this > email or feel free to call us directly at > the phone number listed below. > > Mira Winsby - Service Coordinator >
From: JoeSpareBedroom on 19 Dec 2007 15:32 I believe Keith is using the new information to justify his logic that because it took so many years for the car to log 73K miles, it "wasn't used much", so those miles are somehow different than if they had been driven in a shorter period of time. Of course, that's silly, but that's what he was saying in his other thread. "Jeff Strickland" <crwlr(a)verizon.net> wrote in message news:Y8faj.28686$JW4.9295(a)trnddc05... >I have to take issue with the comment. > > I can't say if the motor is a non-interference type or not, but the > determining factor is not the presence of a timing belt. That is, simply > using a belt as opposed to a chain does not prescribe interference or > non-interference. It's possible that Toyota makes such a distinction, but > this is not the determining factor in the grand scheme of things. > > Interference, or the lack of it, describes the ability of the pistons and > valves to collide should something go astray. Interference is more > accurately denoted by the compression ratio -- a low ratio will have more > room in the combustion chamber for the piston and valve to peacefully > co-exist. > > I have to wonder at the response you received because I do not expect the > ability for the pistons and valves to collide to be related to the kind of > valve timing mechanism. I suspect the motor is the non-interference type, > but not because it uses a timing belt as opposed to a timing chain. > > > > > > > "Keith Lee" <cmarvel(a)NOSPAM.nethere.com> wrote in message > news:pan.2007.12.19.20.13.03(a)NOSPAM.nethere.com... >> All: >> I just received this email from a Service Coordinator at my local Toyota >> dealership and repair place. It's >> now official that my 1998 Toyota Avalon engine is non-interference. Thank >> you to everyone who helped me >> with this question. Here is Mira's email below. >> >> Keith Lee >> >> >> >> Hi Keith, >> Your 1998 Avalon has a 6cylinder engine and a timing belt, this >> constitutes that your engine is non- >> interference. If you have any further questions please respond to this >> email or feel free to call us directly at >> the phone number listed below. >> >> Mira Winsby - Service Coordinator >> >
From: Jeff Strickland on 19 Dec 2007 15:34 I didn't follow the other thread, and only knew of his question as to the kind of motor but not the reasoning for asking it. "JoeSpareBedroom" <dishborealis(a)yahoo.com> wrote in message news:fdfaj.638$Sa1.359(a)news02.roc.ny... >I believe Keith is using the new information to justify his logic that >because it took so many years for the car to log 73K miles, it "wasn't used >much", so those miles are somehow different than if they had been driven in >a shorter period of time. Of course, that's silly, but that's what he was >saying in his other thread. > > > "Jeff Strickland" <crwlr(a)verizon.net> wrote in message > news:Y8faj.28686$JW4.9295(a)trnddc05... >>I have to take issue with the comment. >> >> I can't say if the motor is a non-interference type or not, but the >> determining factor is not the presence of a timing belt. That is, simply >> using a belt as opposed to a chain does not prescribe interference or >> non-interference. It's possible that Toyota makes such a distinction, but >> this is not the determining factor in the grand scheme of things. >> >> Interference, or the lack of it, describes the ability of the pistons and >> valves to collide should something go astray. Interference is more >> accurately denoted by the compression ratio -- a low ratio will have more >> room in the combustion chamber for the piston and valve to peacefully >> co-exist. >> >> I have to wonder at the response you received because I do not expect the >> ability for the pistons and valves to collide to be related to the kind >> of valve timing mechanism. I suspect the motor is the non-interference >> type, but not because it uses a timing belt as opposed to a timing chain. >> >> >> >> >> >> >> "Keith Lee" <cmarvel(a)NOSPAM.nethere.com> wrote in message >> news:pan.2007.12.19.20.13.03(a)NOSPAM.nethere.com... >>> All: >>> I just received this email from a Service Coordinator at my local Toyota >>> dealership and repair place. It's >>> now official that my 1998 Toyota Avalon engine is non-interference. >>> Thank you to everyone who helped me >>> with this question. Here is Mira's email below. >>> >>> Keith Lee >>> >>> >>> >>> Hi Keith, >>> Your 1998 Avalon has a 6cylinder engine and a timing belt, this >>> constitutes that your engine is non- >>> interference. If you have any further questions please respond to this >>> email or feel free to call us directly at >>> the phone number listed below. >>> >>> Mira Winsby - Service Coordinator >>> >> > >
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