scorchmaster

iTrader: (6)

I've heard of a ball bearing trick to get rid of dents in runner. You're supposed to force the ball through and the dents pop out. What do you use to push it throguh? I want to try this for my exhaust headers but dont know of anything to push it with.

PneumaticTire

Dead blow hammer, or i suppose?

IROC-Turbo

More Bearings behind it??Then use hammer of choice??I need to do that myself for the set of headers i use to ground start engines and annoy the nieghbers .

Mark 89Formula

How about attaching a cable to the ball bearing long enough to extend all the way through the runner or header tube and pull the ball through?

firebirdjosh

iTrader: (1)

You're going to have to pull rather hard. More bearings is the more common and logical way.

scorchmaster

iTrader: (6)

Bearings are damn expensive, anyone know of a cheap site?

86Z

iTrader: (4)

i found this

https://www.thirdgen.org/techbb2/sho...t=runner+dents

87TPI350KID

Call up AS&M or SLP and send you a new set

colonboy14

iTrader: (7)

I know somebody makes a "tool" which is a set of steel ***** that get progressively bigger. You start with the smallest one that wont fit through, and just force them through with a hammer until you get to the biggest one which is the diameter of the runner. Might want to search for that, sorry I can't remember where I saw it.

91 z28 350

Ebay has the ball bearings for $45

S10Wildside

They're the wrong size! I ordered a set from that guy on ebay and they're too small. Any large dents will look better after running the ***** through, but the dents are still very obvious. If you really want runners that look like new, forget about the ***** on ebay (and the lousy "shim" he includes). The shim is simply a piece of packaging banding that will split before running the ***** through every runner.

37mm is the largest ball that will pass through...and will not make the runners perfect. 38mm is barely too large to pass through.

I don't understand why everyone keeps saying that the professionals use steel *****. If they do, then that's only part of the process. I had Street and Performance remove dents from my runners and the markings inside the runners, where the dents were, had indication of a side to side rocking motion. They must be using a smaller ball on a hardened rod to massage the dents out. They also blast the runners with steel shot to produce a finish that resembles the Corvette runners. This abrasive finish looks good and covers up any scratches and very, very small dings.

88 350 tpi formula

iTrader: (9)

take them too a shop that polishes horns and other band instruments. they can remove the dents. they have all sorts off tools for just this type of thing. special spoons, ***** ect. it takes some sweet talking but, they can do it

S10Wildside

I've been meaning to do that. I used to play trumpet for a guy who owns the local Brass and Woodwind repair shop. Got a few sets of runners that need a little work.

net_coma

iTrader: (3)

I think I would be looking around for replacement runners...and driving a bearing through a set of dented headers...no thanks...I would rather replace or live with it than endure the nightmare I envision.