Replacing My Head Gasket: An Ongoing Journal - Page 3 - Nissan Sentra Forum - B15, B16 and B17 Sentra Forums
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post #31 of 84 Old 10-26-2007, 10:43 PM
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Here are the pictures

Engine Block:


Cylinder 1 & 2 Valves:


Cylinder 3 & 4 Valves:


Top of Head


Camshafts


Cylinder 1


Cylinder 4
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post #32 of 84 Old 10-27-2007, 02:49 PM
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store the cams standing up

02 Red B15 SE-R Spec V, full restoration thread
https://www.b15sentra.net/forums/sho...d.php?t=145655
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post #33 of 84 Old 10-27-2007, 05:43 PM
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Quote:
Originally Posted by deVic
store the cams standing up

Doesnt matter, car is back together now.

Just so everyone knows you do not have to remove the chain and chain cover, just the cover that covers the cam gears. Cuts like 2-3 hours out of the job
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post #34 of 84 Old 10-27-2007, 07:27 PM
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Quote:
Originally Posted by deVic
store the cams standing up
Just curious, why?

2003 Spec V

Crashed, abused, loved. Damn thing just won't give up.
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post #35 of 84 Old 10-28-2007, 12:54 PM Thread Starter
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Wow, my journal thread has been hijacked, I didn't think it was possible...

As previously stated, this is not a how-to. This is just what I have done. Although I must thank you. Knowing that the chain doesn't have to come off helps tremendously. We were having a ***** of a time getting the bolt out of the intake cam and just said to hell with it. Guess I'll give it another go. I haven't had the chance to work on the car recently due to the insane rain we've been having in SE PA. It's finally sunny today but we got mad house work to do so I'll see what happens.

On another note however, I just got the wonderfully bad news that my warranty ended July 22 so the fact that my stock header destroyed my pistons is now my problem. So basically I'll be replacing the gaskets and trading this disaster in. Let it be someone elses problem. I need a truck anyway and Jeeps lifetime powertrain warranty makes the Grand Cherokee Laredos even more nice.
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post #36 of 84 Old 10-29-2007, 08:02 PM Thread Starter
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Update: October 29 - Off with her head!

So the good news, the head is off. Woot. Had to use a 3' piece of pipe on the wrench to get the leverage to get the intake cam gear bolt out. Not sure what a proper cylinder head is supposed to look like but, whatever. Here it is.

OMG look at these valves

Notice the black seal missing betyween the cylinders? Other side is even worse...


Totally out of light now so re-assembly will have to wait until later. And of course the bad news. Being that my Spec is parked in the backyard in a driveway, it is pretty exposed to the elements. Well, unfortunately one of those elements happen to be a tree branch, 3 in fact, that broke free from the mighty oak in our yard due to the winds we had and fell on my car. I couldn't get pictures due to lack of light but there are three nice size dents in my hood now, one that goes over to the driver side fender. Needless to say the relief that the head is off has been all but been extinguished by the newly installed tree ergonomics in my hood. If it ain't one thing it's another...

P.S. Anybody know a good way to clean the valves? I could just use some steel wool or a wire brush unless theres a better way.
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post #37 of 84 Old 10-29-2007, 08:51 PM
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Quote:
Originally Posted by BigDave
Update: October 29 - Off with her head!

So the good news, the head is off. Woot. Had to use a 3' piece of pipe on the wrench to get the leverage to get the intake cam gear bolt out. Not sure what a proper cylinder head is supposed to look like but, whatever. Here it is.

OMG look at these valves

Notice the black seal missing betyween the cylinders? Other side is even worse...


Totally out of light now so re-assembly will have to wait until later. And of course the bad news. Being that my Spec is parked in the backyard in a driveway, it is pretty exposed to the elements. Well, unfortunately one of those elements happen to be a tree branch, 3 in fact, that broke free from the mighty oak in our yard due to the winds we had and fell on my car. I couldn't get pictures due to lack of light but there are three nice size dents in my hood now, one that goes over to the driver side fender. Needless to say the relief that the head is off has been all but been extinguished by the newly installed tree ergonomics in my hood. If it ain't one thing it's another...

P.S. Anybody know a good way to clean the valves? I could just use some steel wool or a wire brush unless theres a better way.
Wow your cylinders are dirty. I wouldnt worry to much about the valves, i didnt clean mine, but mine did look a little better. As for cleaning the head surface and block surface, use a scotch brite bad and acetone. Make sure you get them REALLY REALLY clean and wipe them both down with acetone one last time before you put them together.

P.S. i noticed you kept the timing chain cover on, makes it alot easier doesnt it?
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post #38 of 84 Old 10-29-2007, 09:11 PM Thread Starter
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Quote:
Originally Posted by houstonser
Wow your cylinders are dirty. I wouldnt worry to much about the valves, i didnt clean mine, but mine did look a little better. As for cleaning the head surface and block surface, use a scotch brite bad and acetone. Make sure you get them REALLY REALLY clean and wipe them both down with acetone one last time before you put them together.

P.S. i noticed you kept the timing chain cover on, makes it alot easier doesnt it?
Dude, so much easier. I was dreading having to take off the crank pulley and keeping the timing proper. Its not a good sign on the part of Nissan when in their FSM it states you need to remove the timing chain cover AND timing chain to remove the head In the end it just took some grunt.
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post #39 of 84 Old 10-29-2007, 10:02 PM
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I'd start out with scotch brite.

I need to figure out a new signature.
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post #40 of 84 Old 11-11-2007, 01:23 PM Thread Starter
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I would have loved to throw up a final post on this thing saying it was all back together and the planets aligned and all is right with the car and the world, but such is not the case. The car went back together without much of a problem, with the exception being we weren't quite sure if the cams went in proper seeing as the marks we made lined up but didn't really line up...not sure how we ****ed that up but either way when we went to start it it turned over for a few seconds but wouldn't start up. So I let it sit and tried again and this time it turned over a few more times sounding very normal but then it made a slight popping sound. No idea what it was but that can never be good. So at this point the very reliable AAA is towing my giant red paperweight to Drexel Hill Nissan. The whole point of this ordeal was to avoid the stealership but oh well, should have left it to the pros. I'm am hoping, praying and doing rain dances that its a simple fix and under $500. But life has a funny way of sticking it in sideways with no lube at the worst times. We'll see.
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post #41 of 84 Old 11-11-2007, 01:25 PM
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Sorry to hear that man, Good Luck

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This site blows (B15Sentra.net)
I Vote BAN!!!!
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post #42 of 84 Old 11-11-2007, 01:53 PM Thread Starter
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A few pics as well:

The very technical method of torque to yield. Since I refuse to buy an angle wrench that I'll use once, I just bought a protractor from the dollar store. worked like a charm.


And just for Mr. orangello, told you we used a torque wrench. The very remarkable, Mr. Stanley.


And the awesome dent the mighty oak tree decided to put into my hood.
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post #43 of 84 Old 11-12-2007, 11:52 AM
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I hope your "paperweight" comes out OK. After all this work, you'll be pizzed if you sell it.

That is one HAWT torque wrench.

Quote:
Originally Posted by Maxx View Post
I was just thinking....I've owned Nissan products built in each of the last 4 decades (70's -- 00's.) That is pretty cool. I honestly don't know why I have owned so many Nissan products. They are like herpes....they keep popping up in your life.
2002 SE-R 5 speed
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post #44 of 84 Old 11-12-2007, 05:23 PM Thread Starter
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Ok, wow. So pretty much the worst possible outcome has occured. The exhaust cam was 180* off (again, no idea how this happened) and has apparently bent the valves. They tested the cylinders and got ZERO COMPRESSION! I didn't think that the valves could be damaged seeing as the car never actually started but apparently just from turning the engine over they did. So the dealers recommendation: A NEW LONG BLOCK, AT THE LOW COST OF $3700, with labor! And they can't just replace the valves because there may be more damage to the engine that would go unseen. As you can guess I am pretty pissed right now. I though maybe it would have been a minor problem, couple hundred bucks, whatever. How it became this catastrophic failure boggles my mind. Although it shouldn't surprise me with all the problems I've had with this car (more than just mechanical, I swear its cursed). So I'm at a loss right now with what to do. Chan, customer service extraordinaire is waiting for my call back. Any ideas? Look elsewhere for repairs? Sell it as is, part out? Motor swap is out of the question, I am finished with this car.
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post #45 of 84 Old 11-12-2007, 05:26 PM
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Change that sig.

Sorry Dude, beer, lots of it & call CSR back tomorrow after lunch.

Quote:
Originally Posted by Maxx View Post
I was just thinking....I've owned Nissan products built in each of the last 4 decades (70's -- 00's.) That is pretty cool. I honestly don't know why I have owned so many Nissan products. They are like herpes....they keep popping up in your life.
2002 SE-R 5 speed
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