Bill Ball

Tap extractor?

Did not come across such a tool when I broke a tap in my block some 10-12 years ago. After a few days of collecting suggestions here, I cut across the flutes with a Dremel bit in a few minutes.

Some tap extractors are said to work with spiral flutes, so might have some luck with drill bits as well.

WallyP

If all else fails, EDM will get a broken bit or tap out quickly and easily without touching the threads. Some machine shops have the EDM sinker system.
(EDM = Electrical Discharge Machining)

tda1

Many hours several bits later I think I got past this issue. I used a TimeCert insert and it worked quite well. I also ordered the quikcenter tool but the bolt was too far gone for that.
Now on to the water pump. In the instructions I'm following (thanks Dwayne) he doesn't use RTV. There appeared to be quite a bit on the original WP. I was wondering if I should use it? how much to use? and how to apply it?

Ducman82

as little as possible. i did a very thin amount of each side... like just a smear, you could not really tell it was on the gasket.

Leon Speed

No goop, just the gasket.

Bill Ball

That pump's not original if it has goop on the gasket. The factory installed it dry.

tda1

It is original...with the mileage there would have been no reason to change it previously. It also doesn't appear that any of the components taken off to get to it were removed previously either. at any rate.... I think I will go with the thin layer option.
Thanks

Bill Ball

I still doubt it's original if there is goop on the gasket. Low mileage would not be a good indicator. It is common practice (except by Porsche), advocated by many 928 experts here over many years, to replace pumps with timing belts at 5 year intervals (of which your car has had 6) regardless of mileage, and one of the most well known 928 specialty shops always gooped the gasket. Porsche wouldn't have. Only if the car was always Porsche dealer serviced with the odo showing less than 60K miles could it have the original belt and pump.

fraggle

No records, we didn't know when the last (ever?) change was. Pump had a metal impeller, too.

Bill Ball

Metal impeller are common on rebuilt water pumps. Sometimes you will find a label on the backside of rebuilt pumps. Anyway, it's just an academic issue. Carry on.

tda1

Bill,
Upon closer inspection...it's not so much goop as it is a gasket which has all but disintegrated. At any rate...cleaned off the surface and got the new one on. The TimeCert worked very well...thank you all for the suggestion and assistance.

Bill Ball

The broken water pump bolt is a rite of passage. You conquered that. You're on your way.

Avar928

Bill don't say that. It's the driver side door handle hinge that's the rite of passage. I've already conquered that.

I'm on board to do my TB/WP/Gear job next month. I can't have drawbacks!!

By the way, Fraggle and Brett, I think I managed to fix the coolant issue. Replaced that heater feed hose. Took me about 5 hours. 1 hour disassembly and reassembly. 4 hours of trying to get that PITA hose to mate with the port. Would have been easier if I removed the windshield wiper motor for much needed space thinking back. The space was way too small to work with and the curvature of the hose made it difficult to get it all lined up properly.

Also that connector I broke to the CPS, ended up replacing the whole thing instead. Tip of the hat to Roger on soaking it in PB blaster prior to attempting to remove the CPS. I tugged on it and a small piece broke off. A good soak and settle, some wiggling left and right with a slow and steady upward pressure and it came right out.

tda1

The new timing belt is on and the car is mostly re-assembled. (Thanks Fraggle). The only think I'm needing to check is the cam bolt torque. I have to be careful there because I'm afraid I can over torque it.
Do I need to be concerned about the tension on the alternator and ac belts?