Plenum Pull Advice, Starter Rebuild, MAP Sensor Info

[mgbrv8]

Okay I have finally gotten back in the states and have some time. I am going to pull my Plenum on my 91 Z this weekend so I can rebuild my starter. Is there anything else I need to attend to While I'm in there. All advice and links are welcome about anything My car has 88,000 miles on it.

Dave

[zr1mom]

Look for brittle vacuum hoses, lose connections, oil and dirt in the valley. Check the drain hole is clear.

[Dynomite]

Originally Posted by zr1mom

Look for brittle vacuum hoses, lose connections, oil and dirt in the valley. Check the drain hole is clear.

In general like ZR1mom suggests
Compressed Air works great from below on the valley drain tube just to the rear of the oil pan on passenger side.
Now........get ready for some fun

Oh......drain some coolant first so when you remove the plenum the Throttle Body (TB) coolant is not getting into the Injector Housing. Or....here we go.....
Block the TB coolant when you are there

LT5 Eliminated Systems

[jimmy b.]

check the crankcase breather hoses and especially the clamps mine were loose and letting oil leak out of them, also the vent cover bolts,gasket,etc,etc.

[LGAFF]

remove that pesky additional aluminum from the runners if you have not already

[mgbrv8]

How much coolant should I drain for a upper plenum pull??

Dave

[mgbrv8]

I removed one and a eighth gallons by tapping into the line that goes to the radiator from the coolant resevior like is depicted below is this sufficient for a upper plenum pull?

Dave

[Dynomite]

Originally Posted by mgbrv8

I removed one and a eighth gallons by tapping into the line that goes to the radiator from the coolant resevior like is depicted below is this sufficient for a upper plenum pull?

Dave

I would think that would be close......you want to get below the top of the IH coolant manifolds. You want to have a couple of Jerry's Plenum gaskets on hand also. I just drain coolant out of the radiator petcock on lower passenger side of radiator. I also have on hand a gallon of NAPA antifreeze to replenish the coolant. Or a good time to flush the coolant system and replace coolant.



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[mgbrv8]

it looks like my a/c compressor is leaking and its a little oily on the vent box and looks like some one did a little mild porting in the past, what do you all think any observations or suggestions??

[LGAFF]

If you are referring to the cresent shaped cuts in the IH to head surface that is factory matching, not porting done later.

PORT IT!!!