Plenum Pull Advice, Starter Rebuild, MAP Sensor Info
 

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

Re: Plenum pull advice
 

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

Re: Plenum pull advice
 

In general like ZR1mom suggests :thumbsup:
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 :D

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 :p

LT5 Eliminated Systems

Re: Plenum pull advice
 

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.

Re: Plenum pull advice
 

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

Re: Plenum pull advice
 

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

Dave

Re: Plenum pull advice
 

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

Re: Plenum pull advice
 

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.

http://partimages.genpt.com/partimages/213967.jpg

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Re: Plenum pull advice
 

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??

Re: Plenum pull advice
 

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!!!