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Thread/bolt type for spare wheel clamp

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Thread/bolt type for spare wheel clamp
#1
patrickGT Avatar
patrickGT Patrick S
Sydney, nsw, Australia   AUS
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As per title need thread bolt size for spare wheel clamp in a 1974 BGT??? Thanks.

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Re: Thread/bolt type for spare wheel clamp
#2
MGB567 Avatar
MGB567 Barrie Braxton
Ninderry, KabiKabi country, Queensland, Australia   AUS
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1966 MG MGB MkI "Money Guzzler"
1979 MG MGB GT V8 Conversion "Darkside"
IIRC it's 7/16 UNF but it's not a bolt it's a special tie down. Numerous invert the spare tyre to carry stuff so a bolt and plate can be substituted. Click here and read bottom right.


Mk1: CKD 11/66 first registered 8/5/67; owned since 3/77. 18GB +40 balanced. Peter Burgess BVFR head. Piper 285. 123. FidanzaFW. 4synch c/r box. Lots more as I did a nut and bolt rebuild; finished 2015. Tartan Red.

GT: December '78. VW Golf guards, flush fit front and rear valances. Torana XU1 vents, frenched indicators & Mk1 rear lights. 'Worked' Rover V8 with Monsoon ECU for EFI. GM4L60E, Lokar tiptronic & Quick4 controller. Vintage Air A/C. FC IFS. CCE 4 link rear. Salisbury with Quaife. Jaguar Storm.



Edited 1 time(s). Last edit at 2024-04-21 10:53 PM by MGB567.

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Re: Thread/bolt type for spare wheel clamp
#3
red68mgb Avatar
red68mgb Silver Member Jim Milavec
Murrells Inlet, SC, USA   USA
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1968 MG MGB "Redginald"
I found that with modern tires, the OEM tie down is too short. Many, myself included, have extended it with a coupling, a short stud and a bit of loctite. I got the parts from McMaster-Carr, but not sure what's available in your part of the world.


I'd rather wear out than rust out.

"If everyone is thinking alike, then somebody isn't thinking." General George Smith Patton

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Re: Thread/bolt type for spare wheel clamp
#4
smokey w Avatar
smokey w Silver Member Juri P
Toronto, ON, Canada   CAN
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1971 MG MGB
Here's how I lengthened my spare wheel hold-down.


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Spare wheel clamp - Step 1.JPG    34.2 KB
Spare wheel clamp - Step 1.JPG

Spare wheel clamp - Step 2.JPG    33.8 KB
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Re: Thread/bolt type for spare wheel clamp
#5
33EJB Avatar
33EJB Tim C
LS, Eastern Ontario, Canada   CAN
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1969 MG MGB
In reply to # 4787855 by smokey w Here's how I lengthened my spare wheel hold-down.

I did the same.

In the past I deflated the 185-14 tire a bit, that allowed the sidewall to collapse enough so that the clamp could reach the threaded part on the trunk floor. I always carry a small air compressor in an ammo box in the trunk, it was quick and easy to unscrew the clamp and re-inflate the tire when needed.

Lengthening the hold down just makes it quicker to access the fully inflated spare when required - no compressor necessary.

In reply to # 4787820 by MGB567 Numerous invert the spare tyre to carry stuff so a bolt and plate can be substituted.

That's not practical with a wire wheel spare, the hub protrudes too far and prevents the tire from sitting securely on the floor of the trunk. If someone has come up with a way to invert a spoke wheel spare, I'd like to see it.

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Re: Thread/bolt type for spare wheel clamp
#6
riley1489 Avatar
riley1489 Gold Member Bruce H
Great White North, QC, Canada   CAN
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1953 Jaguar XK120
1959 Riley 1.5 "King George"
1973 MG MGB
In reply to # 4787812 by patrickGT need thread bolt size for spare wheel clamp in a 1974 BGT??? Thanks.

to answer the initial query, this is a 3/8-24 (UNF) thread.

B


Life's most persistent and urgent question is, "What are you doing for others?"

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Re: Thread/bolt type for spare wheel clamp
#7
MGB567 Avatar
MGB567 Barrie Braxton
Ninderry, KabiKabi country, Queensland, Australia   AUS
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1966 MG MGB MkI "Money Guzzler"
1979 MG MGB GT V8 Conversion "Darkside"
Aah so not 7/16. smiling bouncing smiley

I inverted a spare centre-lock Minatour by placing a piece of foam under it about the housing in the boot floor. IDK if that has the same protrusion as a w/w.


Mk1: CKD 11/66 first registered 8/5/67; owned since 3/77. 18GB +40 balanced. Peter Burgess BVFR head. Piper 285. 123. FidanzaFW. 4synch c/r box. Lots more as I did a nut and bolt rebuild; finished 2015. Tartan Red.

GT: December '78. VW Golf guards, flush fit front and rear valances. Torana XU1 vents, frenched indicators & Mk1 rear lights. 'Worked' Rover V8 with Monsoon ECU for EFI. GM4L60E, Lokar tiptronic & Quick4 controller. Vintage Air A/C. FC IFS. CCE 4 link rear. Salisbury with Quaife. Jaguar Storm.

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