Hey thank you for that info! Yes I did the compression test at operating temperature (engine was about 190*). And I actually did cylinder #2 first. So 178 was the first number that I got. I was pretty surprised when the none of the rest of the numbers even got over 140. I will roll the engine over before I put the intake back on like you suggested and see how that cylinder looks. And I'll definitely plug that hose as you suggested. I'm headed back out to keep cleaning up all the mating surfaces while I wait on the gaskets to arrive. In the meantime... Questions: -Are you're saying that the compression in the rest of my cylinders should be expected to be so low (120-140) because of the dish pistons that are in there? -How much water could be bypassing my radiator through that un-needed hose? Because the car definitely has a tendency to run hot. -Is anyone able to verify the tightening sequence for the cylinder head? -Is there a tightening sequence for the intake manifold?
https://www.teambuick.com/reference/400-430-455_engine_torque.pdf I see a numbering system for the head bolts in this link. It just seems like a strange pattern for tightening the the head down. Can anyone confirm or deny its validity?
Haha. Damn Mike! You sound like my friend over here. He’s HOUNDING me about why I’m putting these old heads back on. the aluminum top end is coming. But I really hate to bolt it up to a block that is full of this much sludge. Really don’t want to pump 20 years of funk through a brand new top end. Here’s some pics of what’s in the block and heads
Here you go, a must have, https://www.ebay.com/itm/1967-Buick...079230?hash=item4463bc943e:g:jBIAAOSwWI1c4aSJ https://www.ebay.com/sch/i.html?_fr...l1312&_nkw=1967+buick+chassis+manual&_sacat=0
Oh I have it empty right now. Which leads me to another question. Another chart on Teambuick.com says the cooling system capacity is 20 quarts. However when I emptied the coolant last night the radiator was full to the top and I only got about 2 gal (8 qts) from it. Now granted; the block is still full. But there surely isn’t 3 gallons of coolant in this block right? Sowhat gives? How many gallons will the system hold?
System capacity is 16-17 quarts (67 Chassis manual) depending on whether you have A/C or not. That includes the heater core. There is coolant in the block that you can drain. There are block drains on either side of the block.
BE CERTAIN that the block and head are not damaged in the area where the head gasket "let go". It would be real common for the head or block to be blowtorched by combustion gasses spewing from one cylinder to the other, melting/distorting the metal of the head/block. You really ought to check the head and block with a straightedge. If either or both are warped, lack of gasket crush could be the reason the gasket popped to begin with. I blew the head gasket on my '88 K1500 a couple years ago--between #3 and #5. Gouged the block and head; led to complete engine replacement. Bearings on #5 don't look good; with #3 firing across the gasket into #5, #5 was essentially seeing massive preignition (by ~90 degrees!) This beat the hell out of the bearings; and I don't trust the piston either. In your case, #4 fires 90 degrees ahead of #6, so your #6 may be as beat-up as my #5.
Awesome Schurkey. Thanks. Does the picture below show such “blowtorch” effect? Thats the metal between cylinders #4 and #6 (the cylinders that had no compression) and I cannot get it to clean up or smooth out.
Also, I’m Having a hell of a time finding a parts store that can get the intake gaskets for me. From what I’m looking at on the cylinder head there are two square water passages and two round water passages on each side. -Do I need new and separate Gaskets for each of these? -Can I reuse the valley pan? pictured is what I just got from the part store. Do I need more than that?
The million dollar question: Is the valley pan the only thing used as a gasket? ...I don’t remember any big chunks of gasket falling out when I pulled the intake. But I did it alone and was pretty pre-occupied trying not to destroy the engine bay.
https://www.rockauto.com/en/catalog...v8,1434252,engine,intake+manifold+gasket,5424 Return what you bought. I hardly ever go to the parts store unless it is an emergency. I just use rockauto.
