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Tips
Tips

1500 - water pump kaput

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No, not for that. They are for a 90 degree air die grinder. That's too big and powerful. I'll find a link. No need to wait. I'll leak or it won't. It wouldn't hurt but if you're that close to failure it won't take long till it does.

You could use pads on a drill but it'll take longer.
 
They work best on this little guy. They will work on a straight shaft one too but it's easier with the 90.

Remember you want the wheel spinning towards the cylinder, like a tire, that way it'll throw trash in the other direction. Out something in your cylinders to keep debris out too.
 
OK, good news - the studs held to 46 ft-lb.

Bad news - leak down test results:
From 80 psi, cylinders 1 through 4 gave:
77, 75, 65, 65.

I can hear the air escaping but can't really tell where it is coming from.

Not quite sure what to do now - except maybe set fire to the bloody thing.

I had the head surfaced and checked, the block, by my measurements was flat, new head gasket with Copper Coat.

Should I pull the head off and see if there is coolant in the cylinders again or should I re-assemble everything and see what happens.

Grrrrrrr!!!!
 
O.k, stop and think, "why did it pull it down to begin with"?

The only reason you pulled the head was cause of coolant.

That issue should be resolved now.

You didn't pull it cause the rings or valves may be worn, just cause of coolant.

I would put it back together and run it and see what happens.

Remember, you'll have some coolant that'll need to be burn out of the pipe, so don't freak when it starts smoking right off the bat and you smell antifreeze.

Run it for a while and get it good and hot. Watch your temp.
 
Tape over the carb intakes and see if you still hear the same leak?

Then also tape over the exhaust pipe and see if there is a difference?

Maybe that will help you pin point the leak. Did you ever say if you had the valves reseated?
 
Jack,

As far as the head, it was resurfaced, pressure tested and vacuum tested (and deemed OK). Not sure exactly what that implies - can someone explain to me - I'm thinking that means the valves are OK and there is no cracks?

That's a good idea about the tape.

Ha! You fooled me! The manifolds are disconnected so taping over the exhaust pipe would be kind of silly.

I did hold a thin strip of newspaper over the intake and exhaust ports in the head (with the leak down tester running) and it did not flutter.

Hate to mention this but it sounded exactly like before I yanked the head off to discover the blown gasket and coolant in the cylinders - hence my despondency.

I've installed the rocker pedestal and right now I'm setting the valve clearances.

I was going to install the replacement fan clutch in situ ie hammer (sorry, tap) it on without taking off the water pump from the engine - that should be OK, right.

The only difficult bit is them there dang lower manifold bolts.

After that I can fire it up and see if it's OK.

Cheers
 
bigjones- you do know that those are some pretty um... interesting- leakdown numbers? Did you listen at the dipstick?

m
 
SilentUnicorn said:
bigjones- you do know that those are some pretty um... interesting- leakdown numbers? m
Click to expand...
Yeah.

I'm almost finished putting on the manifolds. I should have it fired up today sometime but I'll be surprised if all is well.

I've just read that even a 20% leak may still give you a serviceable engine, however, it bothers me that it is not across the board.

I'm praying that the back two cylinders just have a slight ring problem.

We'll see!

Cheers

PS. I went over to check the dipstick but the darn exhaust manifold was on top of it.
 
My next thought was listen at the oil filler with the cap off.

Now you know air can only come out in three places. Crankcase, manifolds, or water jacket.

Crankcase = oil filler

Manifolds = exhaust and intake ports

Waterjacket = radiator fill

Will be intrested in your findings
 
don't forget- i think if the fuel pump is off- that will give you an opening into the crankcase


m
 
I've abandoned the leak down test and just going to see what happens when I fire the muvva up.

Then it will be interesting because if it is blowing white smoke I will not have a clue what to do next.

OK, the fan and manifolds are on - just got to get the radiator and carb back on - having a little rest right now.

Cheers
 
Ahhh, we going to learn soon.
 
We're waiting...
grin.gif
 
So what happened after 10 min or so.

What does that stuff feel like on your hand?
 
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