OK - I snapped the top bolt off when tightening the waterpump on my 91 240 - at 16 ft. lbs. per Haynes. Used the old bolt and it must have been stressed. Pulled the pump back off and the break is below the surface.

Bought an extractor. Used a center punch, drilled - felt like it went through - and inserted the extractor. Snapped it in half on the first try - also below the surface of the block.

An earlier post indicated I could get away with permatex, and use the remaining studs and bolts. Here are my questions:

- Am I ok without the top bolt as long as the remaining four are correctly torqued?

- Is there any potential of antifreeze coming out of the top hole - the drill gave at one point - felt like I drilled through the bolt. Then I broke the extractor.

- If there is potential for antifreeze coming through, and if it is ok to leave the bolt as is, should I fill the hole with something like JB Weld to be safe?

Worst case, I will have the car towed and properly tapped. I do intend to use this as a daily driver for my soon to be licensed daughter. And it gets hot in Alabama in the summertime.

Thanks as always for the help and advice.

Dave
91 240 Original Owner