perrys4

Where can this be purchased?

T Colvin

Now that it's out, I can say it's a labor of love. Don't want to do it again though.

Thanks you everyone for all your help and suggestions.

T Colvin

Hey guys,
I need a little more help. The belt tensioning took came in today, so I figured I will put the car back together tonight. We'll I figured wrong. I stripped three water pump threads tonight trying to torque it to 6 ft lbs. The threads from the inside of the block came off before I can reach 6 ft lbs. What do I have to do now? Is there such a bolt that I can screw into the block and it will expand to hold the water pump to the block? Please help, I'm tired of driving my wife's car.

Charley B

Are you sure your torque wrench is properly calibrated?

T Colvin

I just it out of the package tonight. It didn't take much effort, not like I was putting some force behind it. It's the gauge kind, not the clicking one.

Charley B

Is the indicator needle on zero when you hold it on its side?

T Colvin

Yes

Charley B

When you say "three water pump threads", are you referring to three different bolt holes or three threads from one hole?

T Colvin

Do you know at what ft. lbs the thread will strip?

T Colvin

Three different bolt holes

SharkSkin

Sorry to hear about it... that really sucks. You're not going to like the following, because under the circumstances the threads ought to have stripped.

Spec is 6 Nm, which is about 4.43 foot pounds. You're much better off using a wrench that reads in inch pounds since there are few if any torque wrenches that are accurate at this torque if they are graduated in foot pounds. So what you really want is ~53 inch pounds, for best accuracy you'd probably want a wrench that maxes around 100 inch pounds.

Basically, if you were setting the wrench at 6 foot pounds you were giving the bolts 30% more torque than spec.

Sounds like it's time for helicoil or time-serts.

HTH

T Colvin

Dave,
It seems like it was tighter when I was taking it off than the 6 ft. lbs that I'm trying to torque it with. I'm reading about the helicoil now. Do you know where I can pick some up or is it a special order?

SharkSkin

Maybe it was but you were breaking threads loose as well as the bolt head that might have been somewhat frozen against the pump. Hardware that's been in place for any significant length of time will almost always require more torque to break free than was used to tighten them.

Helicoils are fairly easy to get. 6mmx1.0 is a very common size, any place that carries metric helicoils should have it.

Charley B

Try NAPA if there is one around.

Bill Ball

GET LONGER BOLTS.

The holes are 17 mm deep, as I recall, but you only use maybe 5-7 mm with the standard bolts. Eh, just measure the depth with a probe and get bolts that are a 5 mm short. You'll need to tap further into the hole. Get a 6mm x 1.0 tap. WD-40 works well as tap oil. Take a little bit off the tip of the tap so you can go a bit further (there are such things as bottom taps, but you won't find one locally). You don't even need to remove the new WP to do this.

If that fails, then you can go with HeliCoil or Time-Sert. Autozone sells the HeliCoil kits. I don't know if you can install them w/o removing the pump. Fortunately I have managed to avoid using them on any 928 WPs.