Various Topics on Toyota

..anhe..

After buying my new 2004 Sienna, I realized it has an aluminum block engine.
How long has this been going on? Is this a proven engine or are they trying
what Vega did many years ago. From what I can tell, I don't think it has
cast iron sleeves. I bought a Toyota because of its history of reliability.
Has anyone had any problems with aluminum block Toyota engines? Charles
Ranheim

..lvinGibs.. ..ilcity.c..

Little late to be asking questions about a vehicle you already
purchased, don't you think? Any engine in any car built today
will easily last over 200K, if properly serviced and maintained,
not to worry


mike hunt



cranheim wrote:
>
> After buying my new 2004 Sienna, I realized it has an aluminum block engine.
> How long has this been going on? Is this a proven engine or are they trying
> what Vega did many years ago. From what I can tell, I don't think it has
> cast iron sleeves. I bought a Toyota because of its history of reliability.
> Has anyone had any problems with aluminum block Toyota engines? Charles
> Ranheim

..anhe..

Mike, I hope you are right. I have owned GM cars before that had cast iron
engines. I hope Mobil 1 is compatible with aluminum cylinder walls. I was
planning to use it after break-in. Perhaps someone can shed more light on
how long Toyota has used aluminum engines. I just hope this isn't the first
year to try it. Charles Ranheim

..y ..r..

"cranheim" <cranheim@prodigy.net> wrote in message
news:Zvu2c.21658$Hi6.19822@newssvr31.news.prodigy. com...
> After buying my new 2004 Sienna, I realized it has an aluminum block
engine.
> How long has this been going on? Is this a proven engine or are they
trying
> what Vega did many years ago. From what I can tell, I don't think it has
> cast iron sleeves. I bought a Toyota because of its history of
reliability.
> Has anyone had any problems with aluminum block Toyota engines? Charles
> Ranheim
>
>
as long as you keep in mind it is an aluminum an don't run it hot shoud you
have some type of coolling system failure, and yes it is iron sleeved.Get
used to aluminum that and soon we'll also be seeing ceramic's as the sleeve
material of choice.

..ili..

In news:Njv2c.32486$YH2.7236@newssvr16.news.prodigy.c om,
cranheim <cranheim@prodigy.net> being of bellicose mind posted:
> Mike, I hope you are right. I have owned GM cars before that had
> cast iron engines. I hope Mobil 1 is compatible with aluminum
> cylinder walls. I was planning to use it after break-in. Perhaps
> someone can shed more light on how long Toyota has used aluminum
> engines. I just hope this isn't the first year to try it. Charles
> Ranheim

And aluminum block means very little where the cylinder walls are
concerned. The actual cylinder surface can be a pressed in steel
sleeve, Nikasil sprayed metal, Toyota's Composite Metal Matrix (as
found in the Celica 2ZZGE engine) or a and etched surface with the
removed metal replaced with various composites. Your V6 should be a
pressed or cast-in steel sleeve. I know Corollas have used an
aluminum block starting in '98. Since there is no such thing a
purely aluminum cylinder walls, you have ill-founded concerns.
--

- Philip @ Maximum Torque RPM

..ili..

In news:c2e0jt$ctl9$1@news3.infoave.net,
Jay Terry <SCMOPAR@shtc.net> being of bellicose mind posted:
> "cranheim" <cranheim@prodigy.net> wrote in message
> news:Zvu2c.21658$Hi6.19822@newssvr31.news.prodigy. com...
> > After buying my new 2004 Sienna, I realized it has an aluminum
> > block engine. How long has this been going on? Is this a proven
> > engine or are they trying what Vega did many years ago. From
> > what I can tell, I don't think it has cast iron sleeves. I
> > bought a Toyota because of its history of reliability. Has
> > anyone had any problems with aluminum block Toyota engines?
> > Charles Ranheim
> >
> >
> as long as you keep in mind it is an aluminum an don't run it hot
> shoud you have some type of coolling system failure, and yes it is
> iron sleeved.Get used to aluminum that and soon we'll also be
> seeing ceramic's as the sleeve material of choice.

Soon? Take a look at Toyota's Composite Metal Matrix cylinder walls
on the Celica / Corolla-Matrix XRS 2ZZGE engine. For that matter,
you'll notice valve seats are no longer the traditional pressed-in
items into the aluminum head on the Corolla 1ZZFE engine. This engine
uses a laser-clad process directly on the aluminum.
--

- Philip @ Maximum Torque RPM

..o.. .. ..ori..

On Sat, 06 Mar 2004 20:17:04 -0500, MelvinGibson@mailcity.com wrote:

>Little late to be asking questions about a vehicle you already
>purchased, don't you think? Any engine in any car built today
>will easily last over 200K, if properly serviced and maintained,
>not to worry
>
>
>mike hunt

....or it will sludge up at about 40K if you don't change your oil...


>
>
>
>cranheim wrote:
>>
>> After buying my new 2004 Sienna, I realized it has an aluminum block engine.
>> How long has this been going on? Is this a proven engine or are they trying
>> what Vega did many years ago. From what I can tell, I don't think it has
>> cast iron sleeves. I bought a Toyota because of its history of reliability.
>> Has anyone had any problems with aluminum block Toyota engines? Charles
>> Ranheim

Scott in Florida

..lvinGibs.. ..ilcity.c..

Toyota and many other manufactures, domestic and imported, have
been using aluminium engines trouble free for many years, not to
worry.


mike hunt



cranheim wrote:
>
> Mike, I hope you are right. I have owned GM cars before that had cast iron
> engines. I hope Mobil 1 is compatible with aluminum cylinder walls. I was
> planning to use it after break-in. Perhaps someone can shed more light on
> how long Toyota has used aluminum engines. I just hope this isn't the first
> year to try it. Charles Ranheim

..anhe..

I ***umed it would be a sleeved engine, which I have no problem with.
However, I just received the shop manual for the 2004 Sienna and looked at
the engine service section. If the cylinder bore is out of spec from wear,
the block has to be replaced. If the top surface is not true within specs,
the block must be replaced. There is no possibility of machining or reboring
to fix problems. Basically, it is a throw-away engine if something goes
wrong in the most common wear point. Hopefully, Toyota has perfected their
design to the point it will not fail in the normal life of the vehicle. One
of my reasons for selecting the Toyota was it's past history of reliability,
including the engine. A comment was made I should have checked on this
before I bought the van. Where would I have found this information? I
remember the days of the Vega. Even the dealers swore the later aluminum
engines were sleeved to prevent failure. I had one of the last engines made
and the service manual that clearly said it was not sleeved. Hopefully,
Toyota's good name and reputation will prevail, and I will have a solid
reliable engine. Thanks for your thoughts. Charlie Ranheim

..ili..

In news:%LG2c.56236$lY4.21589@newssvr33.news.prodigy. com,
cranheim <cranheim@prodigy.net> being of bellicose mind posted:
> I ***umed it would be a sleeved engine, which I have no problem
> with. However, I just received the shop manual for the 2004 Sienna
> and looked at the engine service section. If the cylinder bore is
> out of spec from wear, the block has to be replaced. If the top
> surface is not true within specs, the block must be replaced.
> There is no possibility of machining or reboring to fix problems.
> Basically, it is a throw-away engine if something goes wrong in
> the most common wear point. Hopefully, Toyota has perfected their
> design to the point it will not fail in the normal life of the
> vehicle. One of my reasons for selecting the Toyota was it's past
> history of reliability, including the engine. A comment was made
> I should have checked on this before I bought the van. Where would
> I have found this information? I remember the days of the Vega.
> Even the dealers swore the later aluminum engines were sleeved to
> prevent failure. I had one of the last engines made and the
> service manual that clearly said it was not sleeved. Hopefully,
> Toyota's good name and reputation will prevail, and I will have a
> solid reliable engine. Thanks for your thoughts. Charlie Ranheim

Charlie: The Vega had no steel sleeves. It's gone. Been gone for a
generation. Let it go.
--

- Philip @ Maximum Torque RPM