What helicoil to use ?
Thread Starter
Staging Lane
Joined: Jan 2020
Posts: 56
Likes: 2
From: Grand Rapids, MI
What helicoil to use ? Putting back together an LS2 and one of the bolts that mounts the oil pump to the block has stripped . Do I drill and tap for next size up or do I stick a helicoil in there and if so , what size ??
TECH Addict
Joined: Dec 2017
Posts: 2,191
Likes: 977
Definitely the Heli-Coil. I doubt you could get a larger bolt through the OP anyway without causing even more problems.
Prob 10mm std thread (1.5mm I think). No problem though, just take one of those bolts with you when you go the store to pick up the kit, to make sure.
Prob 10mm std thread (1.5mm I think). No problem though, just take one of those bolts with you when you go the store to pick up the kit, to make sure.
Trending Topics
Beat me to it, Scott! SO MANY PEOPLE identify bolt sizes by the hex size, i.e. the size socket it takes. That is flat WRONG. I will also add that in my many years of installing these things, the best and hardest to screw up are the genuine Heli-Coil brand kits. There are many slightly cheaper brands, and they work pretty good. But I've had the best luck with the real Heli-Coil....
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
TECH Senior Member
Joined: Jul 2009
Posts: 8,034
Likes: 663
And Scott for the WIN. I was hoping Scott would chime in when I was reading the OP.
Appreciate it. Helicoils work well on fasteners that don’t require a lot of torque, and it’s SUPER easy to open up the hole to the correct size for the insert on aluminum pieces (block in this case) with the included tap.
TECH Senior Member
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.