SIGforum
Sienna needs new heads: fix and sell, fix and keep, or scrap?
September 08, 2019, 03:30 PM
wreckdiverSienna needs new heads: fix and sell, fix and keep, or scrap?
I voted to fix and keep. Main thoughts were that you are in CA, so rust shouldn't be an issue.
If you know in your heart that it has been taken care of properly, it's only 1/2 way though its life cycle and should give you many more miles without much trouble.
I wish you well with whatever your choice is!!
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"Once abolish the God, and the Government becomes the God." --- G.K. Chesterton
September 08, 2019, 03:32 PM
thumperfbcquote:
Originally posted by egregore:
I keep hearing different accounts of the leakdown test. First it's the exhaust, then the intake, then you don't know, now this?
quote:
This helped me remember that he said he heard the air through the oil cap.

Air through the oil fill is a
piston ring sealing problem, not a head gasket or valves. Heads aren't going to fix that. And did it not also have an overheating problem some time back? Whatever came of that? All these problems are making me think a used engine (unfortunately a crapshoot whether you get a good one) or a
reputable rebuilt (e.g., Jasper) engine would be a better idea. Or sell it for whatever you can get as a "mechanic's special."
Fair enough, I'll dig up my notes to confirm.
September 08, 2019, 07:30 PM
doublesharpFirst loss is best loss. Let it fly and buy newer, lower miles peace of mind.
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God spelled backwards is dog
September 08, 2019, 07:49 PM
sns3guppyquote:
Originally posted by thumperfbc:
There was no "loud backfire", at least not what I traditionally think of when I hear the term. Sounds like we need to scope the bore before we commit to repairing, if we end up leaning that way.
When most folks think of a backfire," they think of an afterfire, which is coming from the tailpipe. A backfire comes out the air intake or carburetor: it's airflow reversal, coming back out the intake. Most have no idea what it means, and think when the exhuast makes a bang, it's a backfire. It's not.
September 08, 2019, 08:01 PM
thumperfbcquote:
Originally posted by sns3guppy:
quote:
Originally posted by thumperfbc:
There was no "loud backfire", at least not what I traditionally think of when I hear the term. Sounds like we need to scope the bore before we commit to repairing, if we end up leaning that way.
When most folks think of a backfire," they think of an afterfire, which is coming from the tailpipe. A backfire comes out the air intake or carburetor: it's airflow reversal, coming back out the intake. Most have no idea what it means, and think when the exhuast makes a bang, it's a backfire. It's not.
Count me among the ignorant. Any signs to look for now?
September 08, 2019, 08:04 PM
RHINOWSOquote:
Originally posted by wreckdiver:
I voted to fix and keep. Main thoughts were that you are in CA, so rust shouldn't be an issue.
If you know in your heart that it has been taken care of properly, it's only 1/2 way though its life cycle and should give you many more miles without much trouble.
Agreed.
$1000 is far less that 3 car payments and its a car you know.
September 08, 2019, 08:10 PM
Black92LXI have not seen the question asked.
What caused the problem in the 1st place? 150k on a Toyota and needing heads rebuilt or replaced certainly is not common place. Something caused the issue, has that been addressed?
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The world's not perfect, but it's not that bad.
If we got each other, and that's all we have.
I will be your brother, and I'll hold your hand.
You should know I'll be there for you!
September 08, 2019, 08:19 PM
Mars_AttacksI've got over 350k on my Frontier and it's lost either the rings or valve guides on one cylinder. I could put heads and rings in it, but I am still faced with seals and bearings with over 350k on them.
A whole ready to bolt in JDM engine with less than 50k on it is only $1000 delivered.
Stupid easy swap.
Look into a JDM for your Sienna. You get a MUCH better solution than patching up a problem.
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Eeewwww, don't touch it!
Here, poke at it with this stick.
September 08, 2019, 08:52 PM
cheniYep, My girlfriend just bought a 04 Odyssey from original owner with 330,000 miles on it. Routine maintenance seems to have been the key.
quote:
Originally posted by Russ59:
I vote to repair and keep it.
I have an 03 Odyssey with 254k. At 168k, replaced the transmission for $3K.
At 207k, a strange oil leak couldn’t be located and I was leaking like the Exxon Valdez. Got an 04 Pilot motor with 65k. Total cost of engine swap and other while-you’re-at-it parts was $2000.
So I sank $5k into an otherwise solid van in the past 60k miles. Since then I’ve done regular maintenance. It’s lasted two teenage drivers. It’s very practical. It passed smog on Friday without a problem. I’ve had no CEL in that time either.
Honestly I think we’re too quick to scrap vehicle and think a new car (and payment) is better in the long term.
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Silenced on the net, Just like Trump
September 08, 2019, 10:18 PM
sns3guppyquote:
Originally posted by thumperfbc:
Count me among the ignorant. Any signs to look for now?
No, not really. If you're not hearing it then not to worry. It's a technicality regarding the term.
Different subject: Are you hearing a clicking or clacking when the engine runs? Does it occur when the oil is toward the bottom of the dipstick, but seems to disappear when you add a quart, at least for a little while?