Blankety blank Rear Main Oil Seal--Part 2

I'm pretty happy. That seal that was leaking isn't leaking any more. I put 3 hours on it yesterday pulling various things around to break in the rebuilt motor, and not a single hint of oil was coming from the seal area. It must have healed itself following the first 2 hours of breaking-in the other day. Very happy about it.

On another note, the injection pump is now dropping one drip of diesel every 3 seconds, up from one drip per 6 seconds. Folks at Iowa Injection tell me one drop every 5 seconds is the top end of OK. Is there anything you can add to slow it down? The pump pressure is very good, and is almost pegging the pressure meter (about 1/8" from the right hand peg).

Thinking about adding a catch jar with a little hose connecting the drain pipe to the top of the jar, placing it below the bottom of the pump. A pint or so every few hours is what I would probably catch. (Hate the mess of dripping diesel on the concrete floor.)

Good to hear.

Just pay central their $1000 and put a rebuilt pump on. :lol:

Where is your pump leaking from and you are saying that your injection shop said it is in spec if it leaks less than one drop per 5 seconds? I wouldn"t think any leak is ok.

Thanks,
Dan

(quoted from post at 06:41:56 03/30/12) Where is your pump leaking from and you are saying that your injection shop said it is in spec if it leaks less than one drop per 5 seconds? I wouldn"t think any leak is ok.

Thanks,
Dan

Click to expand...

It's leaking out the little drain tube on the bottom side of the pump. I've been warned to not plug it by Iowa Injection, as the pump is designed to leak out the bottom. Maybe leak isn't the right word, but the pump is designed to discharge some fuel. Iowa says 12 drops per minute is OK, but higher is not so good.

By the way Dan, I'm getting close to selling that (I've been told) NOS hydraulic pump. You said you might be interested. A little story: I had the engine rebuilt, and when I tried to install the NOS pump, it wouldn't bolt up. So, I tried the old pump -- same story. Very long story short -- the engine mounting plate had been "tweeked" so that the captive nuts in the plate, the bolt holes in the timing cover, and the large hole that the boss of the pump fits in were off enough to prevent installation. SO, I took the old pump, filed off a little on the top of the boss, and it bolted up. I have good pressure, plenty of gear clearance, so no problem. Just didn't want to ruin the NOS pump by filling on it.

That NOS pump has those little paper plugs in the ports, and it must have very good pressure, because when I turned the drive about 1/4 turn, one of the plugs shot out with a nice "pop." I am pretty sure it is a new pump.

You will have to let me know about the hydraulic pump when you decide what to do. You can send me an e-mail at [email protected]

Thanks,
Dan