Re: Some details of the 2AZ-FE engine

On Wed, 16 Jul 2008 00:14:01 -0400, Steve W. wrote:

> (and
> more than a couple Monzas as well).


Friend of mine had a Monza..the one with the 305!!!
HOLY CRAP!!!!
And because of Federal law, it only had an 85 MPH speedo!

Hachiroku $B%O%A%m%/ wrote:
> On Wed, 16 Jul 2008 00:14:01 -0400, Steve W. wrote:
>
>> (and
>> more than a couple Monzas as well).
>
>
> Friend of mine had a Monza..the one with the 305!!!
> HOLY CRAP!!!!
> And because of Federal law, it only had an 85 MPH speedo!
>
>

My last Monza had a slightly warm 327 in it... It also had a 120 MPH
speedo and could BURY it at will!!!!

I just got rid of my last H body last week. I'll probably regret it. It
was an Olds Starfire GT. It started life as a 4 speed 231 V6 car. It
left here with a turbocharged 231 from a GNX in it. Still a 4 speed but
with a full frame kit. It was a very fun car to drive but I need to
clear out some of the toys.

--
Steve W.

On Wed, 16 Jul 2008 00:57:26 -0400, Steve W. wrote:

> but I need to clear out some of the toys.

NEVER!!!!

Steve W. wrote:
> Hachiroku $B%O%A%m%/ wrote:
>
>> On Wed, 16 Jul 2008 00:14:01 -0400, Steve W. wrote:
>>
>>> (and more than a couple Monzas as well).
>>
>>
>>
>> Friend of mine had a Monza..the one with the 305!!!
>> HOLY CRAP!!!! And because of Federal law, it only had an 85 MPH speedo!
>>
>>
>
> My last Monza had a slightly warm 327 in it... It also had a 120 MPH
> speedo and could BURY it at will!!!!
>
> I just got rid of my last H body last week. I'll probably regret it. It
> was an Olds Starfire GT. It started life as a 4 speed 231 V6 car. It
> left here with a turbocharged 231 from a GNX in it. Still a 4 speed but
> with a full frame kit. It was a very fun car to drive but I need to
> clear out some of the toys.
>

That sounds like a fun ride, even if it makes nasty blatty V-6 noises.
I gotta ask, what are your other toys if that one isn't fun enough to
make the cut?

nate

(gonna be driving my '55 soon, I swear... I'm going through V-8 withdrawal)

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel

On Jul 15, 10:41 am, Hachiroku ハチロク <[email protected]> wrote:
> On Mon, 14 Jul 2008 20:08:50 -0700, Built_Well wrote:
> > The cylinder head cover (not to be confused with the cylinder
> > head) is made of magnesium alloy for lighter weight. I think
> > cylinder head cover is synonymous with "valve cover," but the
> > Camry manual refers to it as the "cylinder head cover."
>
> Yeah, that's the valve cover...
>
>
>
> > Since the manual doesn't mention what the cylinder head, itself,
> > is made of, I will assume iron, but just an assumption.
>
> Toyotas have been using aluminum heads for as long as I can remember. My
> first Corolla, a '74, had an iron block and aluminum heads, which worked
> well for them, but was a fatal combination for certain Chevy (VEGA) models...

IIRC it was backwards... the Vega had an aluminum block with an iron
head. This was back in the day before the Nikasil and similar
processes were perfected, and I am guessing that simple piston/bore
wear was the cause of most of the mosquito fogging action that the
Vegas were famous for. I remember when I was a kid the neighbors
across the street had one and it would lay one heck of a smokescreen.
Was an attractively styled little car but the engines were definitely
a weak link.

I believe that John DeLorean addressed some of the engineering mishaps
in the Vega's development in his book, but it's been years since I
read it so I'm a little furry on the details.

nate

"Built_Well" <[email protected]> wrote in message
news:97101848-da38-42b3-88d7-6dcb0def23b9@s50g2000hsb.googlegroups.com...
>
> Gonna write this stuff down and post it so I don't lose it. Had
> to wade through a lot of pages to find it. The 5th Generation Camry's
> 2AZ-FE engine (an advanced powerplant, by the way) is
> the same engine that was used in the '01 Highlander SUV.
> 5th Generation Camrys cover Model Years '02 - '06.

This stuff is interesting if you have an initerest and understanding of
engines, but otherwise, it is not that helpful for the average
do-it-yourselfer.

>
> The cylinder block is made of aluminum alloy. It uses aluminum
> pistons, high-strength steel connecting rods and caps, forged steel
> crankshaft, and, IIRC aluminum camshafts. The VVT-i only works
> on the intake camshaft, not the exhaust camshaft. It varies
> the timing of the intake valves. There are two intake valves per
> cylinder and two exhaust valves per cylinder. Having two of
> each increases the total port area, so more air can flow into
> and out of the combustion chamber. As the manual's authors
> write, "Intake and exhaust efficiency has been increased due
> to the larger total port areas."
>
> The cylinder head cover (not to be confused with the cylinder
> head) is made of magnesium alloy for lighter weight. I think
> cylinder head cover is synonymous with "valve cover," but the
> Camry manual refers to it as the "cylinder head cover."

Toyota calls valve covers "cylinder head covers."
>
> Since the manual doesn't mention what the cylinder head, itself,
> is made of, I will assume iron, but just an assumption.

The head is also made of aluminum alloy.

>
> The cylinder head gasket, used between the aluminum engine block
> and the (iron?) cylinder head is a steel-laminate type of
> material. Any concern about electrolysis taking place between
> the steel-laminate and aluminum?
>

No concerns about electrolysis taking place between the head gasket and
aluminum, but you should stick with genuine Toyota coolant.

> When the service and repair manual says the dry weight of the
> engine is 267 pounds, does that include the crankcase, crank,
> cylinder head, and valve head with camshafts--or does the
> weight only include the engine block without crankcase
> and cyclinder head, etc.?
>

As Ed mentioned, "dry" means without fluids like oil and coolant. The
weight is for the long block, which is basically the entire engine minus PS
pump, AC compressor, & alternator.

> The crankshaft and camshafts are connected by a timing chain,
> not a belt.

Toyota has started to go back to timing chains on new engines.

>
> The oil pump is located behind the timing chain cover at the
> front bottom of the engine, even lower than the crankshaft.

This is a common arrangement for Toyotas.

The oil
> pump has
> its own short section of chain that's connected to the
> crankshaft. Couldn't tell from the picture if this is a second,
> dedicated chain, or just part of the larger chain that ascends to
> the camshafts. Double overhead cams, don't ya know (DOHC) :-)
>
> If I had to guess, I'd say the oil pump has its own dedicated
> short chain that's separate from the timing chain, ie., camshaft
> chain..

F.Y.I., an engine with 4 camshafts like a Toyota V6 or V8 is also referred
to as double overhead cams, or DOHC because the nomenclature refers to the
cams over each head.

Some older Toyota engines (and current domestic engines) have a single
overhead cam, or SOHC.

--

Ray O
(correct punctuation to reply)