cylinder head removal help!

[beatd]

hey everyone! i need your help! can someone tell me which wires and hoses i have to disconnect? i already know how to take the head off bolt by bolt. i just don't know the wires. please help!! i searched all over the net including autzone.com and read the FSM for the info but i couldn't find it. everything just says "Remove all vacuum hoses, fuel lines, wires, electrical connections as necessary" i just want the specific ones so i can make the head build a little more direct and faster. please help thanks in advance!

[spider_slayer]

there really is no write up. just go out to the garage and logically remove any plugs and hoses that connect to the head and label all of them.

[beatd]

the only thing im sketchy about is the intake manifold because there are alot of wires. i just want to know which ones i need to disconnect.

[SeVa-S13]

Umm, basically everything needs to be disconnected as that's almost total disassembly.

Just start working on it and if something's in your way or holding something that you want off, handle it accordingly. This job will not be fast for ya, sorry.

[beatd]

yea i was hoping that i could get right to it but i guess not. i'll just do it the old fashion way of one by one.

[spider_slayer]

yea i was hoping that i could get right to it but i guess not. i'll just do it the old fashion way of one by one.

thats the spirit

[fayceoff]

I was so discouraged once I took the valve cover off on mine that I decided to swap out the whole motor. That way I didn't have to mess with the timing chain.

But this was my first time getting this deep into a car and I've learned so much in the process....

[Atown 240]

yeah it's a *****. I have to do it soon to. It's gonna suck llo.

Why u tkaing it off?

[beatd]

yea i know.. i'm trying to find time to do it i already have the valve off, intake, and radiator fan and shroud off.. anyway i'm taking it off to fix the head gasket so i figured i might as well get everything rebuild and machined while it's off already.. hopefully i don't mess anything up

[gaehrings13]

I don't touch the intake manifold just take off the brackets and leave everthing connected to it, then with a swivel take out all the bolts for the intake manifold and leave it right there. Then disconnect the exhaust manifold and just let it hand down. Before you remove the head make sure you have the engine on TDC wich is piston number one all the way up, the remove the valve cover, cams, and take out all the bolts from the head, it is a 10mm allen socket, the will be hard to remove so you will need some kind of breaker bar. There will also be two cable that you will have to take off on the back right of the head. Also before you take out the big bolt for the lower chain stick something in the middle of it (something that won't fall in) to hold the tensioner back. When you remove make sure you don't tip the head over because all of the buckets will fall out. If you are taking the head to a machine shop you will need to remove the buckets. Make sure you keep the buckets in order for the intake and exhaust side. Before you put anything together make sure the surfaces of the head and the block are very clean, most likely you would have decked the head already. The bolts for the head are torqued in a special order. You will have to download a FSM to show you the order. You will have to tighten it in two parts, the first time you should do them at 35lbs then the second time 65.... that info is from the service manual. Post back if you need some more help.

[Atown 240]

what if a few tapets fell out. How do u konw where they go?

[beatd]

thanks for the info i'm gonna give it a try tomorrow after work. i was reading the fsm and they said to take the exhaust and intake manifolds out along with the head thats why i ran into the problem on which wires and plugs to take out. i'll take a closer look tomorrow when i get to it.

[gaehrings13]

Trust me dude you don't have to take that out of the car. I wish I had a camera because I have mine apart waiting for parts. I re did the rings and bearing and the water hose decided to break and the temp gauge didn't even move, then the headgasket broke.... well post up some updates dude.

[PapaSmurf2k3]

This job will not be fast for ya, sorry.

I pulled my head in about an hour... its gettin it back on with all the timing marks thats a PITA

I agree.. unbolt the manifolds and slide the head out is much easier. Unbolt the vac. plate on the back of the head (3 bolts) and leave all that crap connected.

[beatd]

yea i can't wait to try it today when i get home today cause i'm still at work. how where you able to fix the timing after putting it back all together? with a timing light?

[Atown 240]

yo have to make sure all the marks on the chain matcha ll the marks on the sprockets.

After ur done putting it back together u set it to TDC and set timing.

[spider_slayer]

you know, looking back on the process, it minght be easier to jsut pull the engine.

[fayceoff]

See? Told ya.

[beatd]

yea i think it would be easier if i pull the engine but then again i don't have a lift for that so i think the unbolting of the manifolds and sliding would be the best for me. unfortunately i couldn't try it yet because my daily 93 altima decided to die on me today so i gotta take care of that first. i'll let you guys know what happens with the 240 when i get to it. thanks for your help!

[Atown 240]

I dnnno about that. I pulled my engine last month and it's a hell of alot of work. Alot more then an hour. I think i'd much rather take the head off.

[spider_slayer]

if its his first time it will take ALOT more then an hour to pull the head. not to mention it SERIOUSLY sucks to put it back in.

[beatd]

does the oil and coolant really have to be drained out?

[Raxephon]

does the oil and coolant really have to be drained out?

Oil? NoCoolant? Yes

I pulled the cylinder head on my '95 today.

NOTE: I have no emissions equipment left on mine. NOTE: You REALLY need to take a long look at the factory service manual before attempting this.

I started at just after 10am and finished at half past noon.

1.Unplug/Disconnect engine efi harness connectors & grounds (all) 2.Remove intake tube between maf and throttle body 3.Remove fan & fan shroud & radiator( to clean properly) 4.Remove belts 5.Remove fuel rail from intake manifold 6.Remove intake manifold 7.Remove exhaust manifold 8.Remove sparkplug wire, sparkplugs, and valve cover

9.Set the crankshaft at TDC and varify that the cam lobes on cylinder #1 are opposing, #1 Piston is at the top of the cylinder, and the distributor rotor is at the correct position for Cyl#1.

10.Mark and remove distributor 11.Remove front upper timing cover 12.Highlight the timing marks on the duplex chain, cam sprockets, the sprocket for the simplex chain & simplex chain itself

13.Remove duplex chain tensioner 14.Remove 1 cam sprocket 15Compress and remove duplex chain tensioner 16.Remove duplex chain

17.Unbolt cam tower caps a little at a time, starting from the ends working your way to the center

18.Remove camshafts 19.Zip tie/Wire tie simplex chain to simplex sprocket 20.Compress simplex chain tensioner and insert pin to lock in place 21.Lock the simplex sprocket in place with a screwdriver through one of the holes braced against the cylinder head casting

22.Remove simplex sprocket bolt and lean sprocket forward 23.Unbolt cylinder head bolts starting at the ends and working your way to the center

24.Remove bolts and washers and keep in order, they need to go back in the same hole they came out of if you are re-using them

25.Gently tap the sides of the cylinder head with a mallet to break it free

26.Reach over and lift cylinder head out of car

[beatd]

you are god! thanks alot at least someone could use this as a ref for head removal now

[8-bit]

dude.. i was about to say that there is only one hose on the head.. the one on the valve cover.. but then i remembered.. i don't have emissoins..

w/ emissions you have the whole huge spaghetti thing in the back of the engine... eeew... i remember that thing.. eeeew.

sorry for your troubles..

[alms24sebring]

When puttong it back together, do u have to put in new head studs or can u reuse them?

[Raxephon]

When puttong it back together, do u have to put in new head studs or can u reuse them?

As long as the headbolts are not damaged and not "stretched" excessively you can re-use them.

A lot of members replace the factory headbolts with ARP's.

If you are turbocharging/supercharging the motor, then new headbolts should be used, but don't necessarily have to be.