2005 4.7l v8
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PharRunner
New member
Pros? Best engine they ever put into the 4runner
Cons? Not offered in the 5th gen 4runner
:flamewar:
Cons? Not offered in the 5th gen 4runner
:flamewar:
Flash Runner
New member
Speaking only on the 4.7L 2UZ itself, and not the 4runner as a whole: yeah they're bullet proof so to say. Best put, ones that go unmaintained still produce 150K+ miles, and ones that go maintained are the ones that go towards the 300K+.
Biggest issue I'll speak of to it, is the damn Intake leak from the cracked manifold headers. Simple, as in the issue is known and there's no guesswork. Annoying bc it's pricey and labor in the tight engine bay is a PITA
Biggest issue I'll speak of to it, is the damn Intake leak from the cracked manifold headers. Simple, as in the issue is known and there's no guesswork. Annoying bc it's pricey and labor in the tight engine bay is a PITA
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Who says it has "issues"? Mine had an issue because I drove it completely underwater and it exploded. I repaired it myself in my backyard and am still driving it to this day. The only issue I can think of is VERY few mechanics are capable of looking at that engine, much less fixing it. Now that I have taken mine apart and seen how advanced they are, I wouldn't trust any shop to rebuild one unless they offered an unconditional warranty.
Billynath1988
Senior Member
change the oil regularly and the timing belt every 90k.. and your pretty much good to go forever
07V8
Member
Really, a NA V8 iron block is complex? Have you seen what they’re putting into new cars these days??
Not saying I trust anyone but myself to do maintenance but there are a lot more complex engines out there.
V8Man
Member
Change the Oil!!
Like [MENTION=122163]duffdog[/MENTION] said, these are complex. The way the valve clearance is is set with the little spacers is very complicated. It requires a lot more work. The gasket set alone is over $400 which doesn't include any head bolts, valve spacers, bearings, rings etc. Like [MENTION=85520]Billynath1988[/MENTION] , [MENTION=167323]Flash Runner[/MENTION], [MENTION=126194]07V8[/MENTION] said the only thing that kills these is lack of maintenance.
We bought the SR5 knowing it had low oil pressure and got it real cheap but I had the engine from #1. Turns out the owner #1 leased it, no records of oil changes. Owner #2 bought it from the dealer with 89,000 on it and no timing belt change. So at 154,000 the oil light starts flickering and they sell. Dealer auctions it, another car lot buys, and then sells to me.
I cleaned the blocked oil pickup screen on the oil pump and we started driving. Turns out the oil passages to the cam bearings got blocked with carbon and it seized at 70 mph, broke off the cam bolt but didn't wreck the valves! Turns out Toyota or others manufacturers did not require proof of maintenance like they do now and it was common practice of some owners to never do maintenance because they could get away with it.
Look at the clogged oil passages!
Like [MENTION=122163]duffdog[/MENTION] said, these are complex. The way the valve clearance is is set with the little spacers is very complicated. It requires a lot more work. The gasket set alone is over $400 which doesn't include any head bolts, valve spacers, bearings, rings etc. Like [MENTION=85520]Billynath1988[/MENTION] , [MENTION=167323]Flash Runner[/MENTION], [MENTION=126194]07V8[/MENTION] said the only thing that kills these is lack of maintenance.
We bought the SR5 knowing it had low oil pressure and got it real cheap but I had the engine from #1. Turns out the owner #1 leased it, no records of oil changes. Owner #2 bought it from the dealer with 89,000 on it and no timing belt change. So at 154,000 the oil light starts flickering and they sell. Dealer auctions it, another car lot buys, and then sells to me.
I cleaned the blocked oil pickup screen on the oil pump and we started driving. Turns out the oil passages to the cam bearings got blocked with carbon and it seized at 70 mph, broke off the cam bolt but didn't wreck the valves! Turns out Toyota or others manufacturers did not require proof of maintenance like they do now and it was common practice of some owners to never do maintenance because they could get away with it.
Look at the clogged oil passages!
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Flash Runner
New member
Sheeeshhhhh, don't get too triggered now [MENTION=122163]duffdog[/MENTION] [MENTION=75868]Ed_C[/MENTION] ! Toyotas, including our 4Runners, are driven by all different types of people, from the die hards like the members on here to a 16 year old girl whose parents probably ignored maintenance the entire life of the vehicle and handed it down to her bc it was having "issues"
Not everyone is gonna say positive things about the same brand/car/engine simply out of not knowing as much as the next person (Hell I'll never buy a Ford, but there's guys on a Ford thread right now probably bashing Toyotas). I've heard people just have bad comments about the engine. Prob some on here in one of the hundreds of "V6 vs V8" threads. Just expressing that everyone's always got their opinions. I already expressed mine in my last post.
If this is still to "vague" for you guys, take the time and do the search yourself.
Props to you though Duff for taking it apart and putting it back together yourself in the backyard, plenty of people probably couldn't do that.
Not everyone is gonna say positive things about the same brand/car/engine simply out of not knowing as much as the next person (Hell I'll never buy a Ford, but there's guys on a Ford thread right now probably bashing Toyotas). I've heard people just have bad comments about the engine. Prob some on here in one of the hundreds of "V6 vs V8" threads. Just expressing that everyone's always got their opinions. I already expressed mine in my last post.
If this is still to "vague" for you guys, take the time and do the search yourself.
Props to you though Duff for taking it apart and putting it back together yourself in the backyard, plenty of people probably couldn't do that.
The 4.7 liter Toyota V8 is a very good engine. there is one issue by far that if paid attention too is not an issue. but if ignored is severely problematic. and that is the Secondary Air Injection Pump (SAIP). the foam filter in it can rot, break loose and jam the fan blades and or jam open/closed the air valves (?). It happened to me (under warranty thank goodness). But it could be as much as a $4000 job ive heard. Slyfox (on this board) makes a $40 bypass kit that takes this issue out of play. And also ive heard that there is a $240 pump bypass kit that you can install even after damage.
Ed_C
Senior Member
Triggered, nope. But 8-post OP has signed up here since March, he could've just done some searching rather than ask a vague and troll-y kind of post, BS like that gets old.
I'm not going to say the UZ series of V8 engines are perfect, worked on enough of them while working at Lexus for over a decade.
flipflopnfly
New member
I like the 4.7l. Not only for the extra 40 torque, but you get the entire package of Torsen center differential with fulltime 4WD and CDL, you also get the full factory tow package with Class IV hitch, 130A alternator, and external transmission cooler.
No-brainer for me. The 4.7l was the only version I even considered.
Yes, it has several features only found on supercars and racing engines. It is NOT a pushrod, single cam American slobjob engine that barely makes it out of the factory, much less has 290psi on all cylinders after 250k miles. Obviously you have never taken one apart and seen how difficult it is to set up the heads and seen the asymmetric VVTI solenoids, how the variable pattern oil squirters actually regulate the piston skirt temp and how the fuel injection computer is capable of closed loop operation the second the SAIS system turns off. Surely you noticed the multi material piston rings which are designed to increase piston sealing with decreasing temps to prevent cylinder wall wear at all RPMs. Perhaps the machine shop that rebuilt my heads who also builds world renowned championship F1 engines was totally wrong about everything they told me and the 2UZ-FE is just a pile of crap.
What engines exactly are "a lot more complex"?
Pros (compared to the v6)
more torque
higher towing capacity
better sounding (subjective)
similar fuel economy
Cons (compared to the v6)
less ideal engine arrangement (things like the oil filter being harder to access)
Timing belt instead of a chain means more frequent (~90k miles) service.
heavier
more torque
higher towing capacity
better sounding (subjective)
similar fuel economy
Cons (compared to the v6)
less ideal engine arrangement (things like the oil filter being harder to access)
Timing belt instead of a chain means more frequent (~90k miles) service.
heavier
