Engine Rebuild Process (1 Viewer)

Joined
Nov 14, 2017
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18
Location
Florida
First post of any substance. I met someone whose 170K 2007 LX470 overheated. Diagnosis revealed the cause to be due to transmission fluid in the antifreeze solution. Leading to overheating and a blown upper radiator tank. Assume the transmission cooler inside the radiators opened up and that was the source of contamination.
Cylinder 3 - ZERO and cylinder 5 - 30 PSI, indicating a head gasket leak, cylinder 1 has 90 and cylinder 7 has 120. Oil in cylinder raises 1 and 7 to 240, probably due to too much oil in the cylinders. rechecking after a few hours, its 180 in each. But still probably bad rings.
Boroscope / Amazon Endescope shows multiple scratches / gouges inline on cylinder walls. So cylinders need to be bored. Will check after head come off...
Oil is clean on dipstick as well as oil cap, so no antifreeze contamination there.
I've done engine swaps before but not usually at someone's home, and no lift.
Fun being under the vehicle getting at all those 17mm transmission housing bolts! Luckily the SUV is already pretty high.
i have done engine rebuild before, but with the lack of machine shops nowadays, am open to suggestions, recommendations and tips to make this rebuild easier.
Open to all input.
Spent about 2 weeks fruitlessly looking for the unicorn engine - VVTI JDM . Aint to be found except for high mileage engines that won;t give compression tests, VIN validation, or more than 4000 with a 30 day warrantee. Other choices are rebuilt with various time warrantees. But a deeper look into who supplies Autozone or Advanced, as examples, reveals poor perfromance/longevity of rebuilds, poor customer service and poor warranty that are not honored.
Being OCD with cars, I would want to have the best engine done with the best precision possible. Which can be a detriment to try and do it all by myself. Need to find a trustworthy machine shop, Met with Steve Keech, owner of Big Machine in Sarasota who specializes in early Corvette motors, Seemed reasonable quote - 700 for the two heads (valve seatss, head planes, magnafluxed) and cylinders bored - $500...Reasonable right?
So here's the start of the pictorial essay and history keeping. Maybe the pictures will help someone else.
Many thanks to 2001LC for pioneering his VVTI work and detailed explanations

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Joined
Nov 14, 2017
Messages
18
Location
Florida
Spraying the Exhaust nuts with PB BLaster

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Disconnecting the O2 Sensor Connection

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Central Jacking point for better access; JackStands MANDATORY and not pictured

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Fuel Rail Bolt slightly open to bleed pressure off; wear safety protection to prevent gasoline into your eyes. Also Disconnect this black plug.

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Disconnect. not sure what these are called at at the moment. Appears to be part of Air Injection

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Joined
Nov 14, 2017
Messages
18
Location
Florida
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Transmission lines. thought I could remove and then have access to transmission housing lower 17mm Bolt, but Noooooo.

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So this is where one of the antifreeze drain petcocks is on the engine!

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