I apologize for this question but I have never used a pressure tester before. Since the intake manifold is removed shouldn't I have to clamp off the coolant lines before I run the pressure check?
Using a coolant pressure tester with the intake manifold removed
- Thread starter wrldky
- Start date
There are several coolant connections on the intake manifold. Cylinder head coolant crossover, intake air heater block, upper radiator hose. It would be best to have the manifold reinstalled for any meaningful pressure test. If you manage clamp off all the hoses to these areas you will probably only be checking the radiator.
wrldky, sorry to intrude in this thread, but I am desperate to find a Raleigh NC Mechanic you used with slipped liners, to pin them.
Can you please send me their info by DM?Henry
There are blocks for sale (somewhere eBay?). That block, blocks coolant ports with the heads off. Then you can pressure test and look closer for slipped sleeves on the block without the heads on. Id assume you could make some blocks to go on the intake as well, but you'll never see the slipper liners.
Just fyi, a slipped liner and a cracked block are 2 separate things. A liner is just an insert into the solid block (not so solid in a rv8) it is just a press fit and can come loose from the walls of the bore and move up and down. independantly and crack can develop behind a liner typically at the top where the head bolts place strain on the casting. then you can get coolant come up around the top edge of the liner and into a cylinder. In themselved are unrelated failures although both are usually triggered by overheating. Although it is a hack repair a loose liner can be pinned in place. A cracked block would require removal of the liner and re welding with new sleeves installed. Coolant ingress into a cylinder can only happen in cylinders 1-2 although very unlikely and 7-8 from a head gasket failure. At that the water jacket is only at the front leading edge on 1 and 2 and rear tailing edge of 7 and 8. Coolant ingress Anywhere else is is a cracked block. You will never get coolant into the oil from a head gasket failure like any other car. That can only really happen from timing cover leak or a crack at the bottom of the block behind a liner (only seen that 2 times)
if i suspect a cracked block i go in with a borescope and while under pressure inspect where the leak is to verify before removing anything.
if i suspect a cracked block i go in with a borescope and while under pressure inspect where the leak is to verify before removing anything.
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You can make 4 adapters or jigs whatever you want to call them. Flat piece of steel and some cork gasket material and cut it and drill it so you can bolt them down to the cylinder heads at the coolant passages. Your going to have to co cork off those two hoses too
Henry, I pulled the engine with the help of my son and we brought it to the machine shop attached to the Napa on Six Forks road by Wegmans. I bought a set of top hat liners and had them installed.
Thank you everyone for your help. I had new top hat liners installed from Turner Engineering about 7 years ago. I'm assuming it's a head gasket. Pulled the heads and are having them serviced. Hope to have it all buttoned up in a week or so. Also bought an ignition coil re-locator kit. (Wish I had the balls to delete the SAI)