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Old 12-24-2022, 10:44 AM   #1
Garandman
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Default Boring wheel hub opening?

Bought some steel wheels for my Sprinter van that were supposed to have 84.1mm bore. They have 78mm bore and dealer won't take them back.

That's only 3mm / 0.125" off the side. Is there any easy DIY way to ream them out? One owner suggested using a cylinder hone, other say that would take forever to remove that amount of material.

If not, have to have the tires dismounted and remounted, which adds to the expense.

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Old 12-26-2022, 08:37 AM   #2
arse_sidewards
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There are a million videos of people opening up wheel bores all over Youtube. Go watch some.

Dremel or die grinder and a carbide burr or wood router and a roughing end mill (HSS, not carbide, your arm is not rigid enough for carbide) are your best bets.

Whoever said hone would be too slow was right.
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Old 12-26-2022, 08:37 AM   #3
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There are a million videos of people opening up wheel bores all over Youtube. Go watch some.

Dremel or die grinder and a carbide burr or wood router and a roughing end mill (HSS, not carbide, your arm is not rigid enough for carbide) are your best bets.

Whoever said hone would be too slow was right.
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Old 12-26-2022, 01:33 PM   #4
Elbert Bass
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The real issue here is why a store would sell you an item that does meet the specifications stated for the item and then refuse to make good?
Or is there more to this story you are not sharing?
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Old 12-26-2022, 01:34 PM   #5
Elbert Bass
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The real issue here is why a store would sell you an item that does meet the specifications stated for the item and then refuse to make good?
Or is there more to this story you are not sharing?
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Old 12-27-2022, 08:37 AM   #6
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without access to a lathe all you can do is use a burr and it will look like a hack job no matter what, but will still work if you don't care.

zero chance an endmill in a router would work, it will either bounce off the edge the second you touch or it will bite and snap the endmill. No person can hand hold a mill and try to side cut

and agreed on the hone. Hones aren't made for material removal, they're made to. . . . .hone. As in taking out tenths.
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Old 12-27-2022, 01:22 PM   #7
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Quote:
Originally Posted by rtv900 View Post
zero chance an endmill in a router would work, it will either bounce off the edge the second you touch or it will bite and snap the endmill. No person can hand hold a mill and try to side cut

People do it all the time when boring out aluminum rims.
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Old 12-27-2022, 01:53 PM   #8
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Quote:
Originally Posted by arse_sidewards View Post
People do it all the time when boring out aluminum rims.
people also buy NFT's
doesn't mean it's not a bad idea

I guess anything can be done, but IMO it would be the hack job of all hack jobs trying to hold an endmill with a router
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Old 12-28-2022, 10:10 AM   #9
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Next.
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Old 12-28-2022, 10:12 AM   #10
Garandman
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Quote:
Originally Posted by Elbert Bass View Post
The real issue here is why a store would sell you an item that does meet the specifications stated for the item and then refuse to make good?

Or is there more to this story you are not sharing?
The shop where I have purchased at least 25 sets of tires (had a small business fleet) since 2005 will not take them back.

Bought them in March and assumed they'd fit. Should have put them on right then. No doubt they would have taken them back then.

I see their point a little. I'm hoping they will comp me on removing and replacing the tires after the wheels are fixed.
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Old 12-28-2022, 06:07 PM   #11
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if you're taking the tires off the wrong wheels why not put them on the right wheels and sell the wrong ones ?
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Old 01-04-2023, 03:03 PM   #12
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Made some progress. Looked at a bunch of YouTube videos, most of which are for alloy wheels. A lot of alloy wheels have a pocket that will center any drill so that easier.

A step drill would be absolutely perfect, but they only seem to make them for hand use up to 65mm.

It seemed like a flap wheel worked the best for steel wheels. Tried one (60 grit is what I had) and it was way to slow: probably take a hour per wheel. They are available down to 36 grit so that remains an option.

So now plan B is a metal cutting 84mm hole saw. Have to cobble together some sort of drill guide but once it is started should go fine. Then I'll use the flap wheel to refine it.

Quote:
Originally Posted by motorbykemike View Post
if you're taking the tires off the wrong wheels why not put them on the right wheels and sell the wrong ones ?
Because the right wheels are $179 each, plus mounting. And I'm not confident those will be right: 5 lug 16" Sprinter wheels are getting hard to find.
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Old 01-05-2023, 06:10 AM   #13
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You know the double hole saw trick for alignment, right?
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Old 01-06-2023, 03:15 PM   #14
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Alright alright alright!

Cobbled together a centering fixture. Waiting on the drill.

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Old 01-06-2023, 03:15 PM   #15
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Alright alright alright!

Cobbled together a centering fixture. Waiting on the drill.

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Old 01-10-2023, 09:55 AM   #16
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Update: not sanguine about being able to guide an 84mm cutter by hand.

Found a small machine shop that will use a Bridgeport and a boring bar. Should cost around $100 but it will be done right.

The tire shop removed the tires and will remount them at no charge.
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Old 01-10-2023, 10:20 AM   #17
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Old 01-10-2023, 10:21 AM   #18
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If you had gone in through the plate before the wheel the plate would have located the hole saw.

Wheels don't need to be thaaaaaat perfect when you got an acorn lug nut on there anyway.
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Old 01-11-2023, 11:19 AM   #19
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Quote:
Originally Posted by Garandman View Post

Found a small machine shop that will use a Bridgeport and a boring bar. Should cost around $100 but it will be done right.
I guess they don't have a lathe?
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Old 01-12-2023, 10:18 PM   #20
arcticscarce
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Quote:
Originally Posted by Garandman View Post
If not, have to have the tires dismounted and remounted, which adds to the expense.
I think there's a good chance that you have to go to this step.
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