I suspect that most of those are turbo'd or supercharged. Aside from
the physical impossibility of getting the chambers small enough to
provide a high compression ratio, valve reliefs in the piston crowns are
bad in and of themselves in terms of performance (hot spots, pockets, etc.)
Now if you're talking about older V-8 thumpers then yes I would agree
with you, but those typically don't have timing belts, either.
replace "roosters" with "cox" to reply.
On Tue, 08 Dec 2009 19:27:40 -0500, email@example.com wrote:
The RAV engine is a "non-interference" engine.
Something just over half, I would guess, of current belt driven
camshaft motors today are technically non-interference engines - but
that still leaves a lot of destruction waiting to happen.
Yes, I obviously know that. I was simply pointing out that the problem
of timing belts breaking causing engine destruction is not really a
"foreign car" problem. The Rav4 is one of those cars where they
recommend replacing the timing belt every 70k miles as a matter of
routine maintenance. The dealers who make money on replacing those
belts would like you to believe you will risk a destroyed engine if
you don't. For many cars, it's bulls***. The "70k" is not really the
normal recommended interval, either. Dealers still tell you that it
is, so they make more work for themselves. The 70K figure is for cars
used for heavy city traffic (taxi cab). If you drive a lot of highway
miles, and aren't using your Toyota as a taxi in Istanbul, the
interval can be as much as doubled.
It happens a LOT on engines that are "interference" engines. The
valve is opened by the cam when the piston comes up - the piston hits
the valve and bends it. If it hits often enough, ot just the right
way, the valve head can break off and bounce around in the cyl.
The valve can also crack or break the piston.
If the shell is in good shape, and the miles that low, I'd price out an
light-bulb-style engine swap with a guaranteed used engine. Value of the
car is irrelevant, what matters is what it would cost to replace it with
something as reliable.
If the engine is indeed shot, one thing you may do rather than buy an
engine from a wrecking yard is to find another Subaru that has a bad
tranny, or is wrecked in such a way that the engine is not harmed. If
you are in or near a fairly large city, something may show up on
Craigslist for a lot less that a wrecking yard would get for an engine.
First, ask the mechanic what he would charge to pull the engine out and
put it in yours, and the years and models of Subaru which would have the
same engine. I see stuff like this all the time on CL, for $200-300,
often with nearly new tires or other major parts that are nearly new.
Besides the engine, keep whatever else is in good shape and you think
you may use in the future, and sell the rest for scrap metal. Larry
On Tue, 8 Dec 2009 17:20:26 -0600, firstname.lastname@example.org (Lp1331 1p1331)
The only problem with the custo9mer supplying the engine is that if it
turns out that the engine has a knock or otherwise isn't as good as
expected, the installer is not responsible to do anyting about it.
Even if the person who sold you the engine gives you a second engine
for free, you will be paying again for the labor. Buy the engine from
the installer or you will be taking a very large risk.
On Tue, 8 Dec 2009 10:16:08 -0500, against all advice, something
I guess if it was my car, I'd blow out the affected cylinder with
compressed air to get any debris out, screw in the right plug,
fire it up and see what happens. Worst thing that could happen
is you'd ruin the motor further and it would need to be replaced,
and just swapping it out for a known good unit would probably
cost less than the diagnostic disassembly.
Best thing happens, it runs ok, and you get a couple more years
out of it.
Howdya like that... we started playing guitar to impress the chicks and wind
up talkin' fingernails with old men.
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