2UZ-FE Intake Manifold Replacement (1 Viewer)

[hortandr]

Well well well.. we meet again fellow mudders.

I will try and keep this short and sweet. When I purchased my LX470 roughly a year ago I neglected to take off the engine cover when inspecting the vehicle. Not that I would have changed my decision but it may have made me negotiate harder.

I discovered a few weeks into ownership that there is clearly a repair done to the intake manifold. I have swat appears to be a black silicon type material used to repair and bond a line connecting to the intake? This is not a good thing and I am lucky to have has zero issues so far while owning this vehicle.

I am going to attach an image I need to replace this manifold.
I have been searching the web for replacements and have found a few.
I would like to avoid spending the $1200 Toyota is asking for this.

What should I be looking for when purchasing a used intake manifold?
Are there questions I should be asking sellers?
Does anyone know what line this is that has been repaired?
What steps can I complete to clean a used intake manifold?

I am just looking for any advice in this project as I need to do this asap.

 

[3_puppies]

post a wanted in the mud classifieds for the intake
clean the top of the engine
use only Toyota intake gaskets, they go on a certain way
how many miles on the rig?
clean the top of the engine before taking apart
might also do starter?
orings? on the crossover tube
heater "T"s and maybe hoses
don't forget to clean the top of the engine
connector for the starter that gets brittle
also another connector, I can't remember
make sure the top of the engine is clean before taking it apart

 

[Mike NXP]

Well well well.. we meet again fellow mudders.

I will try and keep this short and sweet. When I purchased my LX470 roughly a year ago I neglected to take off the engine cover when inspecting the vehicle. Not that I would have changed my decision but it may have made me negotiate harder.

I discovered a few weeks into ownership that there is clearly a repair done to the intake manifold. I have swat appears to be a black silicon type material used to repair and bond a line connecting to the intake? This is not a good thing and I am lucky to have has zero issues so far while owning this vehicle.

I am going to attach an image I need to replace this manifold.
I have been searching the web for replacements and have found a few.
I would like to avoid spending the $1200 Toyota is asking for this.

What should I be looking for when purchasing a used intake manifold?
Are there questions I should be asking sellers?
Does anyone know what line this is that has been repaired?
What steps can I complete to clean a used intake manifold?

I am just looking for any advice in this project as I need to do this asap.

View attachment 3905592

I'd probably want to fix that as well, using the advice posted above ^^^

That being said it sure is a sloppy fix but if It's all sealed up ( shine a light, look through throttle body, and see if it passed though to other side ) it's probably fine to just ride it out as is for now if you don't want to spend the money / time to fix

 

[hortandr]

Hey 3_puppies and Mike NXP.​

Thanks for getting back to me. You brought up a good point I had not thought of yet.

What else can be done when I do this?
I have 121,000 Miles on the rig right now.
I am going to go through with this as I do not feel the most comfortable with the current situation despite it being pretty solid. It just feels too much like a fix in the bush.
I did find a solid intake manifold of an 06' LX on Ebay I am planning on buying.

I have Heater Tees I am goin to replace at same time.

"orings? on the crossover tube"
"connector for the starter that gets brittle"
Can you shed any light on these items?

When you say "clean the top of the engine" are you talking about the current intake manifold and all associated areas?
Is this to ensure no debris can get into engine?
Are there any parts I am missing if anyone knows?
Does anyone know when starter should be replaced? I do not have any issues at the moment when starting.

Parts:

Intake Manifold Ebay/Mud Classifieds

I am seeing the following for intake manifold to head gaskets. Does anyone know which I will need?

Gasket, Intake Manifold To Head, NO.1​

Part Number: 17171-50020

Gasket, Intake Manifold To Head, NO.1​

Part Number: 17171-50030
I believe the part below is between the upper and lower part of the manifold assembly.
Is it worth also replacing this gasket?

Gasket, Intake Flange​

Part Number: 17116-50010

 

[Mike NXP]

Info on crossover tube courtesy of @2001LC copied below

This isn't necessarily a common failure and I don't think I would opt' to remove and replace unless leaking but then again if you're in that close maybe its worth it.
------
One of the benefits, of using Toyota coolant. It leaves a crusty red/pink build-up. Make spotting leaks easy.

When engine warms up, hoses, fittings, heads, ect. expand tightening. That's why coolant pressure test, is done with warm engine. But one can pressurize to ~15 PSI, cold as a first.

The water crossover pipe, uses an O-ring. If not installed properly or reused, may leak. Pipe comes from the heater Tee, cross valley to front of engine to back of water pump. Connect to water pump, with small O-ring. This O-ring is replaced when doing a Timing belt/water pump service.

Coolant leaks seen below BK1 (LH side) side of block. May be flowing from elsewhere, downhill in direction vehicle tilted.

It also can be from block to oil cooler hose. Shop when replacing rack & pinion. Often remove this hose for oil cooler. If not replaced it's a 50 /50 chance it leaks.

Head gasket must also be looked at.
With under shielding off. Look up from below with flash light at where heads meet block (head gasket).

A bit more difficult. It also possible to look under intake manifold, at head gasket. Borescope or drain snake camera is hand.

One of the benefits, of using Toyota coolant. It leaves a crusty red/pink build-up. Make spotting leaks easy.

When engine warms up, hoses, fittings, heads, ect. expand tightening. That's why coolant pressure test, is done with warm engine. But one can pressurize to ~15 PSI, cold as a first.

The water crossover pipe, uses an O-ring. If not installed properly or reused, may leak. Pipe comes from the heater Tee, cross valley to front of engine to back of water pump. Connect to water pump, with small O-ring. This O-ring is replaced when doing a Timing belt/water pump service.

Coolant leaks seen below BK1 (LH side) side of block. May be flowing from elsewhere, downhill in direction vehicle tilted.

It also can be from block to oil cooler hose. Shop when replacing rack & pinion. Often remove this hose for oil cooler. If not replaced it's a 50 /50 chance it leaks.

Head gasket must also be looked at.
With under shielding off. Look up from below with flash light at where heads meet block (head gasket).

A bit more difficult. It also possible to look under intake manifold, at head gasket. Borescope or drain snake camera is hand.

 

[Mike NXP]

When 3 puppies says clean the motor, the main goal is to get all debris blown away so when you remove intake nothing falls into motor. An air cleaning is probably all you need unless any built up grime near intake may require more attention. Once the intake is removed, keep ports covered up and free from debris
-----

No advice here on part numbers, you've gotta enter your VIN into www.partsouq.com and see what comes up. When in doubt, call your local Toyota parts folks

 

[hortandr]

Mike NXP,​

Appreciate your help! I will probably just turn this job into a multi day project and replace everything I can lol!
Going to have to give that procedure a more comprehensive read when I am out of work but it does seem very doable.

As always thanks to @2001LC!
That fella knows his stuff!

 

[hortandr]

h

 

[baltistyle]

And as a tip for the future you, never use any sealant (fipg) when the fsm calls for only an oring or gasket. Follow the procedures to a t.

 

[excessive]

i wonder if the 06-07 trucks can convert to the aluminum intake manifold instead of the plastic one?

 

[hortandr]

i wonder if the 06-07 trucks can convert to the aluminum intake manifold instead of the plastic one?

I believe they can but I am not sure why you would. Aluminum would be better overtime as it is more durable than plastic no doubt. It is also heaver when working on and I think they are only on pre vvti integration. Maybe they can be used regardless of vvti? I guess if they are interchangeable aluminum would be better, I wonder how they handle heat. I believe the million mile tundra also had a the plastics intake manifold.