Ramathorn15
OT Supporter
Is it an 05+? If so it's likely a vvti 4.7.
If not vvti, get cam seals and replace them when you do the timing belt.
If vvti, cam seals require head removal so don't bother. They should hold for a long time but it's a simple/cheap preventative step on the non vvti. On the vvti, you'll want to consider getting the secondary air induction bypass at some point. Not a ton of failures, but when they do you essentially end up in 25mph limp mode until you can fix it or get a bypass. Fixing is $$$$, bypass is $$$
On either, do the fan pulley bracket when you do the TB. The belt will take you roughly 10-12 hours the first time. The fan pulley bracket is like 3/4 of the way into the teardown so if it starts to go bad after a TB replacement, it's a lot of work to replace. Minus whale get it out of the way during the TB.
its an 02, so pre-VVTI
i see a Aisin kit that includes the TB, WP, and tensioners, figure ill just replace all that shit while i got it tore up, ill get the fan bracket as well, gracias amigo!
Ramathorn15
OT Supporter
The Aisin kit is the way to go. You'll also need 2 jugs of Toyota red and DI water for a 50/50.
Ramathorn15
OT Supporter
The only other thing that kinda sucks to maintain is the transmission. Since it's an 02, it will have a dip stick which helps a bit.
When you drain the pan, you only get about 4-5 quarts out (13q capacity iirc). Easiest way to imo to deal with it is to do a 4-5q drain and refill on some frequency. I typically do it ever 10k but I'm sure others will say that's overkill.
getting the level right can be a challenge too. You either have to precisely measure what comes out of the pan and replace with the exact amount of fresh, orrrr you get techstream or an obd2 reader that can give you the tranny temps. The fluid level has to be read/adjusted at a pan temp of 109-115°.
When you drain the pan, you only get about 4-5 quarts out (13q capacity iirc). Easiest way to imo to deal with it is to do a 4-5q drain and refill on some frequency. I typically do it ever 10k but I'm sure others will say that's overkill.
getting the level right can be a challenge too. You either have to precisely measure what comes out of the pan and replace with the exact amount of fresh, orrrr you get techstream or an obd2 reader that can give you the tranny temps. The fluid level has to be read/adjusted at a pan temp of 109-115°.
Ya that’s how I normally do my fluid changes on the camper, couple quarts at a time, takes me like a month to cycle through it all lol
Seen a few YouTube’s of them going 1 million miles
V8 4Runner here, going to drive it until the wheels fall off. Only at 170k miles, so like 830k more miles to go! 
Boing
OT Supporter
- Jun 30, 2007
- 60,364
I've done TB twice on my 4R. Used the Aisin kit both times. It's not really that bad, even the first time as long as you put the belt on correctly. Took me about 12 hours the first time including fixing it after I put the belt on with arrows facing the engine. Arrows point forward.
Also I found it's tons easier to work on if you pull the radiator.
Second time it took me about 4 hours.
I haven't had any issues with the secondary air injection either.
If there was someone near me that would do that work for $260 I'd pay it too.
I watched a vid on it, doesn’t seem too bad, more work than the 3.4 cuz you gotta move around the power steering and alt out the way
Breaking the crank bolt without an impact is always the hardest part, I’ll probably do the bump starter trick
Boing
OT Supporter
- Jun 30, 2007
- 60,364
Oh damn, shows that his business is closed now. RIP. Dude was awesome. Total for the TB, water pump, belts, etc was under that $260.
Last I had heard he got hurt and needed surgery or something. F.
Boing
OT Supporter
- Jun 30, 2007
- 60,364
Find that man and nurse him back to health.damn, I got a deal
still have his text
damn, I got a deal
still have his text
Dealerships and Toyota/Lexus shops were over 1k if I provided parts
4.7 is reliable as can be. Everything else mentioned is accurate including timing belt being a PITA compared to 3.4thots on the 1st gen Sequoias? Its fuckin massive and likely gets 3mpg with the 4.7L V8 and 4x4, but i found a super clean one here for ~$4.5K, 150k actual miles, not a single leak or spec of rust on the thing, runs like a top, needs o2 sensors and a rear hatch door handle, but thats seems to be it, it is by farrrrrrrrrrrrrrrr the cleanest truck ive seen after looking at 40+ of them
if i take out the 3rd row and fold up the 2nd row it has 6.5 feet of cargo room aka mattress room so we can easily camp in the mafawker
plus has a decent set of Maxxis A/Ts on it, so its basically already ready for broverlanding
Doesn't look like it's sagging too bad so suspension was replaced or it's the original on pucks.
Time for light bar, side canopy and you'll be an overlander in no time.