Bolt trouble

TequilaWarrior

Well-Known Member
#1
How can you tell if you've begun to pull the threads out of a bolt hole?

Backstory: My water pump went out on me on Friday (1/4/19). I picked up a new WP, belt, & coolant and installed them on Saturday. The book I have is well.... not in the greatest shape. I couldn't find the bolt torque specs. Also, when I removed the pump, every one of the pump flange bolts was a little over finger tight (one WAS finger tight). They also had a lot of "schmutz" on the threads. After cleaning them very well, I applied antiseize and installed the pump, gasket & bolts. I tightened in a "lug nut" style / criss-cross pattern. But it seamed like every quarter turn or so the next bolt would be loose. I ended up tightening them without regard to a torque spec as I didn't have the torque spec to look at (stupid me, I could've come here) and I didn't have a torque wrench (or inch-pound gauge - also stupid me). Checking the service manuals I just downloaded yields a torque spec of 89 in-lbs. I DEFINITELY overtorqued these. As I finished up, it felt like I could still torque them more - now I'm concerned that I may have begun to pull the threads out of the block. I did check the "feel" of the torque against the timing cover bolts and I didn't tighten the WP nearly as tight as my front cover, but I'm also very sure that those are overtorqued.
 
#2
If you would have pulled them, you would have felt it. While tightening, you can feel it letting go. I think you're fine. Just keep an eye out for leaks as you normally would.
 

MRRSM

Lifetime VIP Supporter
#3
If the Water Pump winds up with an unfortunate leak and it becomes necessary to perform a Thread Repair... if there are no Metric Heli-Coil Kits to suit this repair... THIS Kit will do the trick if the Fasteners there measure out to M8 X 1.25MM.

https://www.ebay.com/itm/Time-Sert-...CFaKtp4:sc:USPSPriority!33760!US!-1:rk:1:pf:0

TIMESERTKITM8X125.jpg


The Three other things required will be:

(1) A Decent Tap Handle Tool Holder.
(2) TIME-SERT Insert Driver Oil (Use a few drops on threads B4 threading on the SERT).
(3) TIME-SERT Loc-Tite (Daubed onto the last few SERT Threads B4 screwing it into the Block).

https://www.ebay.com/itm/Ratcheting...=item3d7690a1d2:g:ascAAOSwEK9UHFST:rk:43:pf:0

I SWEAR by THIS Tool as being Half The Battle of getting GOOD RESULTS because it holds the Tool Bits tightly and allows for working in micro-ratcheting-increments better than the Cheap T-Tap Handles... especially when using the TIME-SERT Drill Bit BY HAND when drilling out the Prep Holes on VERY Small Fasteners where using a Hand Held Drill would be Much Too Aggressive:

RATCHETAPHANDLE.jpg

https://www.amazon.com/dp/B00IZIBJ04/?tag=elightbars-20

TIMESERTHREADLOCKER.jpg


https://www.amazon.com/dp/B003WRDK2I/?tag=elightbars-20

TIMESERTINSTALLTOOLOIL.jpg
 

MRRSM

Lifetime VIP Supporter
#5
...and Drill out the related Bolt Hole in Pump Flange and Metal Gasket, too if the New Bolt needs a bit more room to slip on through.
 
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