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What left-hand thread studs to use?
#1480144
08/05/13 06:52 PM
08/05/13 06:52 PM
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Joined: Jan 2003
Posts: 738
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David_Trimble
OP
super stock
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OP
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Joined: Jan 2003
Posts: 738
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I'm doing the B-body disk conversion on my '69 Charger, using donor parts from a '78 Dodge Diplomat. As part of the conversion, I went ahead and sprung for a new set of rotors for a Diplomat rather than try to reuse the junkyard ones. Since my Charger originally has left-hand and right-hand threaded wheel studs I'd like to swap out the studs that are on one of these rotors (I'm assuming they're all right hand thread studs on Diplomats) with a set of left-handed studs. Does anyone know what would be the correct left-hand threaded wheel studs I would need to use for this (dimensions- or better yet, a part number)?
Thanks!
David
'69 Dodge Charger R/T
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Re: What left-hand thread studs to use?
[Re: David_Trimble]
#1480150
08/05/13 09:59 PM
08/05/13 09:59 PM
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Joined: Aug 2011
Posts: 1,028
NB, Canada
moparfan53
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NB, Canada
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Quote:
...(I'm assuming they're all right hand thread studs on Diplomats) with a set of left-handed studs. Does anyone know what would be the correct left-hand threaded wheel studs I would need to use for this (dimensions- or better yet, a part number)?
LH studs were last used in '70 or '71. Even if they would fit your newer rotors, AFAIK they have not been available from regular parts suppliers for a while. If you really must have LH thread here is a link to reproduction ones for the older cars. Perhaps you can contact them to compare dimensions.
http://www.apexautosports.com/store/
However I agree with the previous posts that the best plan is to change to RH thread.
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Re: What left-hand thread studs to use?
[Re: gregok]
#1480152
08/07/13 09:48 AM
08/07/13 09:48 AM
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Joined: Jan 2003
Posts: 738
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David_Trimble
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Well once I read here on the board of someone who did switch over to RH thread studs and then started having problems with the nuts coming loose on his left wheels until he swapped back to LH. But with all the answers I'm seeing here it sounds like this guy might've been having something else going on that caused that. If that's the case then I'll just keep the RH threads and be done with it :/
David
'69 Dodge Charger R/T
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Re: What left-hand thread studs to use?
[Re: David_Trimble]
#1480153
08/07/13 10:38 AM
08/07/13 10:38 AM
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Joined: Jan 2003
Posts: 21,080
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,080
Niles , Ohio
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Millions of cars with RH lugs.Ma was probally the last to get away from LH ones.Rocky
Chrysler Firepower
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Re: What left-hand thread studs to use?
[Re: David_Trimble]
#1480155
08/07/13 01:48 PM
08/07/13 01:48 PM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
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I Win
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Quote:
Well once I read here on the board of someone who did switch over to RH thread studs and then started having problems with the nuts coming loose on his left wheels until he swapped back to LH. But with all the answers I'm seeing here it sounds like this guy might've been having something else going on that caused that. If that's the case then I'll just keep the RH threads and be done with it :/
David
I have never heard of that , mopar switched away from them to all rights so it couldn't have been an issue . the other sounds like installation error .
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Re: What left-hand thread studs to use?
[Re: RUNCHARGER]
#1480158
08/07/13 11:49 PM
08/07/13 11:49 PM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
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I Win
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Quote:
My 71, 4 speed 440 Challenger would loosen off the left side, right hand thread lugnuts after 10-20 powershifts. It had some aluminum wheels with straight shank lugnuts. With modern lugnuts and wheels and an automatic you won't have problems with rights all around. All my 70 and back stuff retains the rights and lefts though, it was better engineering, too bad it was too hard for most car owners and gas station geniuses to understand.
Sheldon
I didn't see this before I called installation error  , That's crazy Sheldon , did you try running other wheels on the car ?
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Re: What left-hand thread studs to use?
[Re: RUNCHARGER]
#1480160
08/08/13 02:14 AM
08/08/13 02:14 AM
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Joined: Dec 2012
Posts: 85
Rio Linda, CA
nytemuvr
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Joined: Dec 2012
Posts: 85
Rio Linda, CA
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The original reasoning on the LF studs were they thought they would loosen, physics wasn't what it was then what it is now. They won't loosen right or left threaded otherwise, they would have kept them mixed now. Someday when you have the axel out, change them to right handed threads. All Challengers and Mopar cars switched in model year '71 to right hand threads. It wasn't better engineering, it was ignorance of physics then.
1972 Challenger 340(original owner)
1968 D100
1997 HD Road King
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Re: What left-hand thread studs to use?
[Re: nytemuvr]
#1480161
08/08/13 09:10 AM
08/08/13 09:10 AM
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Joined: Jan 2003
Posts: 21,080
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,080
Niles , Ohio
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I agree that it had to be wrong lugs or improper install.Ive had rights on my 65 for years.It has had at least 5 different style mags and steel wheels.Even with slicks the lugs never came loose.Right now it has Welds with 12 inch street tires.Been on forever and never loosen.Rocky
Chrysler Firepower
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Re: What left-hand thread studs to use?
[Re: RUNCHARGER]
#1480162
08/08/13 09:44 AM
08/08/13 09:44 AM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
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Quote:
John: I did and with steel wheels the lug nuts wouldn't loosen. These mags were keystones with the oval holes so you could run them on a Chubby or a Mopar. Like I say with modern conical nuts and correct 4.5" drilled mags I wouldn't expect they would loosen off if correctly torqued. It does indeed show that Chrysler was right in specing the lefties though as the right side certainly didn't loosen off.
Sheldon
There is the reason why NHRA doesn't allow the use of unilug mags. I don't think it's the conical seat stopping them from loosening as there are many straight shank lugnuts on mag wheels in use today that you don't hear of that happening.
What's funny is back in the day there were not many , if any , unilug mags on the market.
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Re: What left-hand thread studs to use?
[Re: JohnRR]
#1480163
08/08/13 11:15 AM
08/08/13 11:15 AM
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Joined: Jan 2003
Posts: 21,080
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,080
Niles , Ohio
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I ran unilug Cragars on my 69 Coronets back in the early 70s.Both were street driven and had tons of miles.They had a piece that went in the rear of the wheel for correct size.I think I still have 2 of them.Ran unilug slots on the 65 and now on the kids 62 300.Again tons of miles but using the correct length lugs.Never come loose.All had the LHs changed to RHs.Rocky
Chrysler Firepower
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