Originally Posted by MacroP

I'm just gearing up to do the infamous valley leak repair and wondering if anyone has done it and what would you do different next time if anything. Or was there any tips and tricks you wish to share. I bought another 460 a few months ago because I'm an idiot. I do have another 460 already + a salvage donor/parts car. Got the 'new' car back last week, after gettting some minor body repairts, and gave it a good inspection and noticed straight away using my borescope that this car had the infamous valley coolant leak under the intake.

Seems like a nice and simple task albeit time consuming and a little back breaking. Plenty of videos online about the repair and a bit of chatter on here too in the past.

So far...
* Have received 2 new orings for the large coolant pipe. Part # 96761-35035 (two needed). Common Lexus and Toyota part.
* Have ordered new direct injector connectors. Part # 90980-12117 (8 needed)
* New waterpump installed the other day.
* Did the engine pulleys (and tensioner) when I got the car back the other day as well. Were all pretty noisy. It's handy when you have another car to compare to directly.
* The radiator has seen better days so a new one is on order. Looks like it has had a repair in the past which I don't trust.
* The A/C condensor looks pretty poor so I might replace that as well from the donor car.

Update: Just checked the two high pressure fuel pumps mounted on the valves covers - yep oil seepage both sides. New gaskets needed here too. 23224-38010 (2 needed). Looks like you can also get aftermarket reseal kit for each side. 5 pieces in each kit. I might stick with genuine parts here.

Update:2 Ended up going all new genuine parts for the fuel pump seal and other consumables. As eveything was only around $100
* PCV - 12204-38010
* Intake Manifold gaskets (it's really seal) - 17171-38020 (two needed)
* Plastic separator plate - 12215-38020
* Throttle Body gasket - 22271-50050
* HP fuel pump seals/gasket 23224-38010
* HP fuel pump o-rings 96723-19010 (two needed)
* HP dampener seals 23279-74010 (two needed)
* HP fuel pump isolators 23915-46011 (two needed)
* Valve cover gaskets LH - 11214-38020 & RH - 11213-38030

Upddate 3:
* 12261-38030 Vent Hose
* 12261-38040 Vent Hose
* 12262-38030 Vent Hose
* 12273-38020 Oil Gasket
* 11159-31010 Valve Cover O-rings - Tandem O-ring. (2 needed)
* 11159-38010 Valve Cover Bearing cap o-ring (2 needed)
* 90430-10024 Valve cover Oil Seal (4 needed)

Update 4: After the job.
The two fuel vapour hoses should be replaced. Mine were solid rubber, almost brittle.
* 23829-38030 Vapour hose (long) - intake manifold to evap valve.
* 23827-38010 Vapor hose (short) - evap valve to tank hardline
8mm(5/16) flexible fuel rated hose will work fine instead as well. I bought a 1m length and cut to lenth. Used around 60% of that.


Any other things I've missed that are normally hard to access?

As I'm in no rush to complete the job once I start it - any suprises don't have to be dealt with there and then. I do have time.


Because I will be remove the A/C condensor (and radiator) anyway, I was also think of removing to the entire front end for ease of access. Thoughts? With the videos I have watched, most have mentioned about having to lean over for many hours. Simple job that can get a bit strenuous on the back for older fellas like me. I have had front end (bumpers and core support) off my primary 460 that I have had for few years now. It all unbolts pretty easily and quickly. 30mins work really.