LS exhaust bolt drill guide

[ChrisPerry]

Lisle 71400




Had 2 exhaust bolts broken off 3/16" down, so I bought this because I can't drill bolts straight to save my life. This guides the drill bit perfectly centered every time.





I won't complain about drilling them anymore.

 

[Bent77]

Nice saves!

 

[sweetk30]

3/8 nut + mig welder + die grinder to clean rusty stub first .

Weld on let cool . Heat with torch and dump cold water on and spin right out .

And 8mm tap to clean junk from holes .

I have done so many I dont want to do them anymore .

But what ever works for you and gets it done !

 

[Bent77]

3/8 nut + mig welder + die grinder to clean rusty stub first .

Weld on let cool . Heat with torch and dump cold water on and spin right out .

And 8mm tap to clean junk from holes .

I have done so many I dont want to do them anymore .

But what ever works for you and gets it done !

Those are hard to weld 3/16" down

 

[obijuank5]

Nah just filler on up. Its not gonna weld to the aluminum.

 

[sweetk30]

Nah just filler on up. Its not gonna weld to the aluminum.

EXactly . . Done it many times . .

 

[fourwheelerjeff]

did you already break a drill bit?

 

[ChrisPerry]

did you already break a drill bit?

Lol, knocked the drill off the stool

 

[ChrisPerry]

Nah just filler on up. Its not gonna weld to the aluminum.

I'm sure this is fact, just too chicken to do. If close to the surface I weld them, just can't bring myself to try on my own junk....

 

[sweetk30]

Won't stick in there .

And if real heavy corrosion I die grind the 2 to 3 threads off the head so the stub is not spinning threw the junk .

We know these bolts and holes are LONG so a few threads missing is not a deal breaker .

 

[ChrisPerry]

Won't stick in there .

And if real heavy corrosion I die grind the 2 to 3 threads off the head so the stub is not spinning threw the junk .

We know these bolts and holes are LONG so a few threads missing is not a deal breaker .

I'm in Comufornia, we don't have heavy corrosion here.....

 

[sweetk30]

your LUCKY AS HELL .

the factory bolts have yellow locktight on them . the heat lets them come out easy over no heat .

and some guys now are doing bolt swap outs every year to keep from popping them .

 

[Wes Harden]

ls motors have exhaust bolt issues? cast iron heads too, or just aluminum. Never had to f with any of our ls exhaust manifolds. mostly cast iron, have some 2019 aluminum now, but nothing yet.

 

[ChrisPerry]

Back one on drivers side is broken on every LS our company owns, 3 of my friends cars, and both of mine.

 

[Wes Harden]

gonna start looking, I haven't heard them leak but I can't hear for $h%^. 1 day I had a KW conventional cab in shop, 1 of my coworkers walks up and asks me where the air leak is coming from.... I say what air leak? He say you can't hear that ? Nope sure couldn't, found it right away was a big leak to.

 

[centexk5]

I was lucky on my 14 5.3 when I pulled the manifolds at a 130k miles. No broken bolts at all.