Aluminum to plastic manifold upgrade (1 Viewer)
- Thread starter SICARIO
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I have a 2003 2UZ-FE with a aluminum intake , I also have a 2005 2UZ-FE with a black plastic intake
The 2005 is MUCH faster and quick out of the hole !
The 2005 is MUCH faster and quick out of the hole !
Bro, the 2005 has a VVT motor... of course it's going to be faster
What's the point other than saving a few pounds? You trying to cut weight bro?
In my opinoin, the performance gains wouldn't be worth the durability trade off. I don't know what the lifespan of the plastic manifold is but I bet it's a whole lot less than the aluminum one!
The Million Mile Tundra had a 2UZ with the plastic manifold. I’m not worried.
I'd still stay aluminum, just polish it... I'm not trying to cover a million miles but I do want mine to last many years and think the Al is the way to go for long life and serviceability over time.
aging fleet
SILVER Star
vvt-i was a 2006 model year change.
source:
Toyota UZ engine - Wikipedia
Slee Off-Road 100 Series Newbie Guide
Also, if you search for a vvt actuator for an '06 LC, the catalog brings back part #13050-50021. The same search for an '05 LC, returns no such part.
I've read posts where people claim that some late '05 were equipped with variable camshaft timing, but haven't seen any evidence to support that on 100s sold in the US.
hoser
SILVER Star
^^^ Correct but VVTI was 2005 for the Tundra... which is what's in Ragingmatt's signature.
It's not mileage I would be worried about, it's the brittleness of the plastic as it ages.
aging fleet
SILVER Star
It's my understanding the VVTi was introduced May 2005 in the 100 series. I see anecdotal evidence of this in parts list, also in speaking with my parts guy at Toyota. That some parts like intake manifold gasket is list for "May 05-. I've not personally seen, although did see a 2005 for sale out of SoCA (ad link into mud) and picture of 05 w/VVt. The picture of engine showed T-Body wire harness on LH side. Seems I've also read a post or two in mud of 2005 owners claiming VVTi (second post here being one).
The plastic manifold is pretty cool and has difference beyond being lighter (nice when replacing starter):
Be interest to see how it would work without VVt heads, charcoal air box filter, updated throttle body with the newer wire harness, A/F & O2's, VVT ECM, VVT pistons, etc.
ACIS:
ACIS controls 8 butterfly valves across the top.
The plastic manifold is pretty cool and has difference beyond being lighter (nice when replacing starter):
- The low-to-mid speed range torque is improved by increasing the length of the intake manifold port.
- The addition of a ACIS (Acoustic Control Induction System).
- The ACIS actuator actuates the intake air control valve that is used to change the intake pipe length to improve engine performance in all engine speed ranges. Source: History of 4.7L
Be interest to see how it would work without VVt heads, charcoal air box filter, updated throttle body with the newer wire harness, A/F & O2's, VVT ECM, VVT pistons, etc.
ACIS:
ACIS controls 8 butterfly valves across the top.
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hoser
SILVER Star
May 2005 was the production date. Slow boat to the US and in June 2005, Toyota introduced and sold the 2006 model year Land Cruiser. But, I believe it is possible a few late model year 2005 LC's were sold with VVT-i's. Production, part inventory and marketing are not always in sync.
Would seem so. Be interesting to know how many of these 05 VVt's slipped through into USA markets
The idea of swapping manifold is and interesting one. But with the 98-02 the throttle body, will not bolt on it. Those also used a throttle cable, so swapping with the newer VVT throttle body would require extensive modification to operate it. I don't have a 03-05 throttle body or gasket around to check bolt patterns. But wire harness is on RH side on those (LH on VVT).
Fun thing to ponder, but not a practice or worthwhile project IMHO.
To swap in a VVT engine into the 03-05 would make more sense and maybe easier. It would require the newer exhaust manifold and duel CATs along with some electronics at minimum.
I can say I still love the older simpler system of my 01. But the power and sophistication of the VVT is cool. It has a sport car feel when you stomp on it, and goes over the mountain passes without need to be mindful of throttle and gearing.
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94SRUNNER
GOLD Star
07 Sequoia or TLC? My first guess would be they replaced the engine with an older 2UZ?
My SEMA-SPEC. 2005 SUPER HILUX 4.7 has the black plastic intake and OH BOY she Flys .............
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