broke water pump bolts
- Thread starter GMdestroyer
- Start date
Here’s the parts list for the broken water pump bolts. Not cheap, but it will get you fixed and back on the road…
A word about the links, if they don’t work, do a search on the part number (P/N). MSC updates their catalog regularly, and the pages may change, but the part numbers don’t.You will need the Adobe Acrobat viewer which is also a free download – http://www.adobe.com/products/acrobat/readstep2.html
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1078 Use drill bushing 5/16” OD, 5/32” ID, ¾” long, P/N 07010457, price $8.57 This centers the drill bit in the housing bolt hole so you don’t get off center and damage the water pump, timing cover housing or engine block
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=23 drill bits - use 5/32” Cobalt/TiN coated bit. P/N 78530433, price $3.91
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1926 Screw/bolt extractors. Use EZY-OUT Screw Extractor P/N 63760037 Price $2.67
One step specialty item: See Drill-Out® Broken Bolt Extractors drill bushing, reverse twist drill & extractor all in one unit. Best to use when the bolt breaks off with the remaining part below the start of the threads. .P/N 05027164. Price $18.33 each. You MUST have a reversing drill motor (either air or electric) to use this bit. http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1926
A long shank tap should be used to chase the leftover metal out of the original threads. Also recommended to clean the corrosion and dirt out of the threads before you reassemble everything. Cleaning the threads will help prevent the bolts from seizing next time (yes, there will be a next time).
Long shank 5/16” taps
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=275 5/16” pulley tap, 6” shank P/N 04801189 price $14.26
OR second choice, will not clean all the bottom threads unless you grind the end of the tap.
http://www1.mscdirect.com/CGI/NNPDFF extension tap, 6” reduced diameter shank P/N 04701181 $16.17
See http://www.windsorfox.com for Stainless Steel Water Pump Bolts with Custom stainless steel studs. Allow the use of factory accessory brackets without hunting for obsolete parts or using spacers.
Kit comes complete with nine polished stainless 12 point bolts, four stainless studs and nine stainless oversized washers.
Price: $65.95
A word about the links, if they don’t work, do a search on the part number (P/N). MSC updates their catalog regularly, and the pages may change, but the part numbers don’t.You will need the Adobe Acrobat viewer which is also a free download – http://www.adobe.com/products/acrobat/readstep2.html
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1078 Use drill bushing 5/16” OD, 5/32” ID, ¾” long, P/N 07010457, price $8.57 This centers the drill bit in the housing bolt hole so you don’t get off center and damage the water pump, timing cover housing or engine block
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=23 drill bits - use 5/32” Cobalt/TiN coated bit. P/N 78530433, price $3.91
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1926 Screw/bolt extractors. Use EZY-OUT Screw Extractor P/N 63760037 Price $2.67
One step specialty item: See Drill-Out® Broken Bolt Extractors drill bushing, reverse twist drill & extractor all in one unit. Best to use when the bolt breaks off with the remaining part below the start of the threads. .P/N 05027164. Price $18.33 each. You MUST have a reversing drill motor (either air or electric) to use this bit. http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1926
A long shank tap should be used to chase the leftover metal out of the original threads. Also recommended to clean the corrosion and dirt out of the threads before you reassemble everything. Cleaning the threads will help prevent the bolts from seizing next time (yes, there will be a next time).
Long shank 5/16” taps
http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=275 5/16” pulley tap, 6” shank P/N 04801189 price $14.26
OR second choice, will not clean all the bottom threads unless you grind the end of the tap.
http://www1.mscdirect.com/CGI/NNPDFF extension tap, 6” reduced diameter shank P/N 04701181 $16.17
See http://www.windsorfox.com for Stainless Steel Water Pump Bolts with Custom stainless steel studs. Allow the use of factory accessory brackets without hunting for obsolete parts or using spacers.
Kit comes complete with nine polished stainless 12 point bolts, four stainless studs and nine stainless oversized washers.
Price: $65.95
88stangmangt
Active Member
Stang8URMPRT
Active Member
Jesus... I had this happen to me at work with a 95 F-150 with a 351W... Broke 4 friggen bolts off doing a water pump... The coolant was not coolant, it was RUST. All I did was drill out the bolt.. eh... I'd say 2 sizes smaller then the bolt, then just ran the appropriate tap... and all done.... It's very very common for this to happen, so your local Ford Dealer should have these water pump bolts... I know we had them, and lots of them. 
88stangmangt
Active Member
I have some matco stud remover sockets that are handy....but if they snap off flush with the block....then a tap is the only way to go....
i just had 5 bolts snap off in a customers 88 e-250 5.8 van.i went ahead and replaced the cover and timing chain set while i was at it.the funny thing was once the cover was removed the bolts came out very easily with a pair of pliers.the bolts corroded inside the cover and thats what causes them to break.they unscrewed from the block very easily.
