11/14/18: I was itching to get Lawrence back together and ready for a weekend trip to Flagstaff so I decided to go into the garage and wrench at like 10pm. I figured I could get the manifold installed and everything buttoned up in about 1-2 hours. Boy, was I wrong.
It didn't take long for things to go awry. First step: Bolt the exhaust pipe to the manifold. Problem was, when I tried to get the necessary 44 ft lbs onto the nut the skew stud would start spinning out of the manifold!
So not wanting to throw this manifold out and grab another one (I bought 10), I decided to just add a nut on the back side of the stud that I could keep a wrench on to keep it from spinning while torquing the other side. Also, just to be super safe, I added a light coat of copper gasket paste to the manifold as another precaution against leaks.
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So after an hour or so of wrestling with that problem the manifold and pipe were bolted together and ready for install. Again, to be super safe and not waste my time, I decided to do a smoke test on the unit now while it was still out of the car so that I didn't go through all the trouble of installing it only to find it still leaking and have to remove everything.
I covered up all the holes in the manifold and ran the test and to my joy, it passed, no leaks.
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Ok, so now it was about midnight and I bolted up the manifold with new gasket to the cylinder head. I torqued the nuts starting from the center outwards and took them all finger tight, then to 20 ft lbs, then to the torque spec of 33 ft lbs.
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Then, I crawled underneath to bolt up the exhaust pipe to the y-pipe and realized my first ************** mistake. I never set the connection in place before bolting up the manifold and now it was not wanting to go into place. There was a visible gap between the pipes and I couldn't pop the pipes into place by hand.
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So then I tried taking off a few y-pipe bolts and seeing if that would allow the two pieces to move a little and slide into place - nope. So then I tried prying on the pipe with a bar, nope. Then my most ************** idea yet - use a floor jack to try moving them into place! Luckily I stopped that stupid idea after like one pump and before putting too much pressure on this expensive 1 year old cat/y-pipe assembly. Finally I decide, just bolt it together and maybe the bolts will snug everything up into place. I do that and the connection looks ok from the outside to my naked eye but you can't really see the connection surface once it is bolted together so there is no good way to know.
I debate doing a smoke test or bolting up the manifold to the head, putting everything back together and just rolling the dice that way. I go with the later and bolt everything up, manifold, egr pipe (real PITA to get those bolts in because of lack of visibility cuz of the throttle body), heat shield, airbox, O2 sensor, connect battery, turn on car, look underneath and see a massive amount of exhaust gases coming out of the pipe connection. Back to square one.
Ugh, time to face the music. Clearly, I needed to fit the exhaust pipes together first, and then bolt the manifold to the head. So now, it's like 1am and I decide to undo everything.
I do that, fit the exhaust pipes into place but then the manifold won't fit onto the studs coming out of the head. Like the only way I can make the manifold fit is if the exhaust pipe below has the gap! So after fiddling with it some more and looking stuff up and swearing a lot it's now like 2 am. I'm thinking my options are:
1. The Chinese manifolds must be different dimensions and don't fit. I need to buy an OEM one.
2. Have a pro takeover from here which means have Ernest come over, or drive with the exhaust leak to a muffler shop and give them a crack at it.
3. Sell all my Monteros and take up a less frustrating hobby.
I have another idea - I know, the problem is that I attached the exhaust pipe to the manifold outside of the vehicle! If I attach the pipe to the y-pipe loosely it will still swivel in its mount, allowing me to then connect the manifold to the cylinder head and it. My wife wakes up as I'm having this epiphany and realizes I'm not in bed so she calls me and tells me to stop for the night and go to sleep. I tell her ok, but looking at the rig, I just can't leave it unfinished tonight for some reason.
Crack a fresh beer and take it all apart. Thank goodness I decided to only use the copper gasket paste on one side of the composite gasket or that would have added another problem to deal with.
So now we're back to where I was a week ago: The manifold is now separated from the pipe, the smoke test I did earlier worthless, the nuts on the back side of the bolts are now removed, and the last 4 and half hours a total waste. Ok, I attach the pipe to the y-pipe and low and behold, even thought it was not super easy because of the crooked exhaust stud, I got the manifold onto the head and pipe flange!
Then the hard part, getting the nuts onto the backside of the manifold, holding them in place with box wrenches while torquing the nuts on the other side of stud from below using a 12" extension. That took forever but I managed. If someone else had been with me it would have shaved 90% of the time off because I lost count of how many times I had to crawl out and then back under the truck as wrenches fell off the other side and had to be re-positioned, etc. Alright, let's button it up: heat shield, EGR pipe, airbox, O2 sensor, battery.
I fire it up, crawl underneath, and see tons of exhuast smoke coming out of the dreaded pipe to y-pipe connection and even worse from the other side of the first catalytic converter! Also, I notice that the speedo, tach, and odometer are blank - nothing on them. It's like 4am and the vehicle is way worse than when I started on this project weeks ago so I throw in the towel for the night and go to bed sore and pissed off.