Replacing the Intake Manifold Gasket - What a Nightmare!

[SunlitComet]

dip it as in clean it to look like new. or glass bead blast it.


http://www.tahoeyukonforum.com/forum/showthread.php?t=26610

It goes on for many pages.

 

[xanatost]

Be a good time to port and polish the intake. One thing I do to keep the slug out of my engein is to add a qt of automatic transmission fluid before a oil change and put one in after that for every oil change. I do that in all my rides. I rebuilt my jeeps motor to a stroker and when I broke her down she sluge free with over 300,000 miles.

 

[Gregski]

I'm an idiot I forgot to mark the distributor before pulling it now the car won't start. Please help. I found cylinder one at the top of it's compression stroke aligned with the timing marks on the vibration damper on the front of the crankshaft. I also did my best to have the distributor rotor point at the number one plug wire, had to finagle the notch in the oil pump shaft a bit to get them to align. Not sure how much to wiggle the distributor clockwise / counterclockwise to get her to start. Please help me get this egg off my face.

 

[SunlitComet]

with the engine aligned and the dizzy ion hand align on side of the roll pin on the dizzy gear with the mark on the body. when done correctly the rotor tip wiil be close to a mark on the top of housing. Looks like an "8" or pyramid/diamond mark of some sort. When fully seated on the engine turn housing to dead on the rotor tip to mark. Lock it down.

If you are lucky you won't need a scanner to fine tune it. You may need to adjust oil pump shaft to get the dizzy to seat if you moved the engine with dizzy out.

Marking thee dizzy on the vortec is pointless IMO.

 

[Gregski]

Thanks bud, not being a smart @ss, but I don't know if you have some typos or you're giving me too much credit, LOL what do you mean by "dizzy ion hand"

with the engine aligned and the dizzy ion hand

and below do you mean the mark on the body is the mark on the top of the housing

align on side of the roll pin on the dizzy gear with the mark on the body.

1,000 thanks, if you have a picture for a dummy like me that would certainly help

 

[Sp1nn3y]

Ah this is revvin me up to do mine, i just recently found out this was my problem as well, intake manifold gasket... :-/

 

[SunlitComet]

Distributor in hand. Near the gear there is a mark on the shaft body. There is one on the top of upper round housing where cap mounts too. Align the roll pin in gear vertically with lower mark. There are two ends on pin use the one that puts rotor tip closest to mark on housing. After seating the dizzy in engine the rigor tip will move closer to housing mark. rotate the housing until the rotor tip is aligned with mark on housing. Clamp it down. If the setting is not good enough you will get a p1345 code. Assuming EVERYTHING is plugged in. No pics from phone but will try later. Unless someone else gets it first.

 

[Gregski]

TDC and Cylinder One

I am stealing these pics from another forum (http://67-72chevytrucks.com/vboard/showthread.php?t=316522) I can do this part, ie find top dead center for cylinder one and get the timing mark aligned on the crank, hope this helps others



but I have a problem, wrapping my mind around all these other markings, (silly I know as they seem so fundamental) but hey I am tired, and without beer so I can't think straight right now

 

[SunlitComet]

that link won't do any good. Print out the procedure below.


Distributor Removal & Installation Distributor Removal

1. Remove the ignition coil wire harness from the ignition coil and distributor cap.

1. Remove two screws holding the distributor cap to the housing.
2. Distributor cap.
3. Remove the distributor clamp bolt.
4. Remove the distributor and the distributor clamp.

1. Remove the distributor gasket and discard.

Distributor Installation

1. Bring cylinder number one piston to Top Dead Center (TDC) of compression stroke.

1. Install the distributor cap screws.
2. Install the distributor cap.

1. Install a NEW distributor gasket onto the distributor.

1. Align the indent hole on the driven gear with the paint mark on the distributor housing.

1. Ensure that the distributor rotor segment points to the cap hold area.

1. Align the slotted tang in the oil pump driveshaft with the distributor driveshaft. Rotate the oil pump driveshaft with a screwdriver if necessary.
2. Align the flat (1) in the distributor housing toward the front of the engine.
3. Install the distributor and distributor clamp.

1. Once the distributor is fully seated, align the distributor rotor segment with the number 8 pointer that is cast into the distributor base.
2. If the distributor rotor segment does not come within a few degrees of the number 8 pointer, the gear mesh between the distributor and camshaft may be off a tooth or more. Repeat the procedure in order to achieve proper alignment.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the distributor clamp bolt. Tighten the distributor clamp bolt to 25 Nm (18 ft. lbs.) .

1. Install the distributor cap onto the distributor.
2. Install the NEW distributor cap screws. Do not overtighten the NEW distributor cap screws. Tighten the distributor cap screws to 2.4 Nm (21 in. lbs.) .

1. Install the ignition coil wire harness.

 

[Gregski]

Chevy Tahoe Distributor Installation

thank you all for trying to help, the following article seems helpful

http://autorepair.about.com/library/a/1a/bl340a.htm

Align white paint mark on the bottom stem of the distributor, and the pre-drilled indent hole in the bottom of the gear (3).

With the gear in this position, the rotor segment should be positioned as shown for a V6 engine (1) or V8 engine (2).

---------- Post added at 11:30 PM ---------- Previous post was at 11:29 PM ----------

She's running again, the #8 makes the rotor point to approximately 5 o'clock if you were standing in front of the car looking straight down at the distributor. But you must realize that, that's not how you drop the dizzy in, since the gear is twisted you have to start with the rotor a bit counterclockwise from the 5 o'clock position, and then as she drops down she turns and falls into her happy resting place. Of course it is easy once you know how. Scratch that there ain't anything easy about it, LOL, it's just trial and error.

One problem was that I could not see the mark on the distributor shaft that is supposed to line up with the dimple on the bottom tip of the shaft. I had to take a paper towel and wipe off all the oil off the shaft to finally see it. It is faint and approximately 2 inches above the dimple, no not the hole that is one inch above the dimple, it is further up on the shaft.

I also finally went to AutoZone and rented the GM oil pump primer tool. It is worth every penny especially since you get to return it and get your $30 bucks back. I just couldn't turn the oil pump shaft with a long flat screw driver to save my life to get it to align right to allow the distributor to drop that final 1/4 inch.