Going from tubed, screwed, bias to radial tubeless questions
#2545088
09/03/18 01:42 PM
09/03/18 01:42 PM
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Joined: Dec 2003
Posts: 1,013 near Kansas City
igozumn
OP
super stock
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OP
super stock
Joined: Dec 2003
Posts: 1,013
near Kansas City
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Have a buddy with an old drag/street car. Been running Sportsmans with tubes on old Centerlines with screws in the rims. He's finally scraped enough money together to put tubeless radials on it and ditch the tires with cords showing.
What kind of issues, I mean, has anyone done the swap, and what kind of sealing issue is there with the holes remaining?
Have one guy that currently works for, and used to work for another, major wheel manufacturer that said to not use the screws with the radials. I have another friend with a tubbed car and his own shop/business, that said to either cut the screws down for the radials, or run the tubes and the cut down screws with the radials.
I suggested having the holes welded up, but I have a feeling he'd be unhappy with what it would look like, plus, he probably can't come up with the $100 or so, to have the local shop do it. Not even sure his old tubes will fit the new tires, as he's gone a hair smaller in size to avoid rubbing.
Wheel guy mentioned filling the holes with silicone. Buddy mentioned cutting down the screw heads and using silicone to attach them. Um, I don't want those things coming off anywhere around me or anyone I know.
Your thoughts? What would you do? What would you do if you had no money?
I'll see if I have a picture somewhere that shows the wheels. My concern is the angle at which the holes were drilled, I'm concerned about sealing with the tubeless tires.
Last edited by igozumn; 09/03/18 01:53 PM.
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2545103
09/03/18 02:22 PM
09/03/18 02:22 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Tires dont seal on that lip, if that’s what you’re asking. The radial area is where the seal happens. The axial lip just stops/ locates the sidewall.
"use it 'till it breaks, replace as needed"
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2545104
09/03/18 02:23 PM
09/03/18 02:23 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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He can try using Right Stuff from the inside (that stuff is super strong) then clear on the outside to make it look better then glue on the tires so they dont slide.. thats about the cheapest way.. but on radials you dont use screws
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2545545
09/04/18 10:40 AM
09/04/18 10:40 AM
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Joined: Jan 2003
Posts: 13,357 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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I doubt you'll have any leakage by leaving the holes open.
Having said that, I've run drag radials screwed to the rim for over 10 years w/ no problems whatsoever. Ran mid 9s for a long time and made a few blasts into the 8s at around 3900 lbs. Nobody, including M/T, ever advised me not to run screws w/ radials back in 2006 when I started running them.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2545675
09/04/18 02:45 PM
09/04/18 02:45 PM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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I have 32 holes in each of my rear wheels (16 per side). I'm now running radials so i just left all the screws out and they don't leak a bit.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2545822
09/04/18 08:38 PM
09/04/18 08:38 PM
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Joined: Jan 2003
Posts: 17,841 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,841
S.E. Michigan
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I've got some 10 year old drag radials that I use as street tires.
They're mounted on Centerline Auto Drag wheels that have holes for screws, which aren't being used. No problems.
The aluminum wheels on my Ram 2500 leak more than the Centerlines do.
Rich H.
Esse Quam Videri
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: gzig5]
#2546433
09/05/18 10:57 PM
09/05/18 10:57 PM
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Joined: Dec 2003
Posts: 1,013 near Kansas City
igozumn
OP
super stock
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OP
super stock
Joined: Dec 2003
Posts: 1,013
near Kansas City
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I would tap the holes, pick a short screw with a head that looks good and install with Loctite Red. Cut and smooth any thread sticking through on the inside. No hole to worry about leaking and the screw heads keep it looking nice. Should cost $5. I like this suggestion. I may not have time to tap, screw, file before mounting the tires. If I get time at work tomorrow, I may try to see what's possible before finishing the job. (sigh) crappy tire machine at work has a sticky foot pedal valve for the bead breaker, unbeknownst to me. I don't get out there much. Anyway, first bead, arm came in, wasn't in the right spot, let off the pedal and the arm kept coming. Couldn't get it stopped before it'd pinched the rim. Nice couple rub/scratches/gouges in the satin finish. He was understanding tonight. Said it wasn't that bad. But it happened. Part is already on order to fix the machine. Oh well. Sucks when you're trying to help a guy out. Again, thanks for the help everyone.
Last edited by igozumn; 09/05/18 10:58 PM.
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2546635
09/06/18 12:35 PM
09/06/18 12:35 PM
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Joined: Jan 2003
Posts: 9,986 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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master
Joined: Jan 2003
Posts: 9,986
Frostbitefalls MN (Rocky&Bullw...
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I went from screwed 15x 15 slicks to 14.5x 15xradials and no screws. Probably totaled 50 passes with a best. 60 ft of 1.25 in a 3000 lb car. Never lost any air, and very little if any over winter.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Going from tubed, screwed, bias to radial tubeless questions
[Re: igozumn]
#2546665
09/06/18 01:18 PM
09/06/18 01:18 PM
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Joined: Jan 2004
Posts: 4,564 Motor City
6PKRTSE
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master
Joined: Jan 2004
Posts: 4,564
Motor City
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Maybe the radial slicks having more give on the sidewall helps when not screwed to the rims? But us Drag Radial guys, I have a few buddies that hit the tire hard enough at the hit that the tire was moving 1" to 1-1/2" on the rim. I was marking the rims/tires myself before each hit. Maybe because a drag radial does not wrinkle up as much as a slick?
I still screw my drag radials to the rims however. Beadlocks are coming for me this winter anyway.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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