control arm question
control arm question i am getting my x-mas list together for the wife. the control arms i want have the option to stay with the 12mm bolt or go to the 1/2" bolt. i know i will have to drill the brackets but 12mm and a 1/2" aren't all that different in size. the 12mm is a 10.8 grade metric bolt which is equal to the 8 grade SAE bolt. whats the advantage?
Hello
The hardware is 12mm from the factory and the difference is 28 thousandths of an inch and 14 thousandths on the side from a 1/2 in bolt. But both will work with the sleeves that UMI Performance use in our lower control arms. If you have any other questions feel free to ask and I will be more than glad to help!
Thanks
Brad
The hardware is 12mm from the factory and the difference is 28 thousandths of an inch and 14 thousandths on the side from a 1/2 in bolt. But both will work with the sleeves that UMI Performance use in our lower control arms. If you have any other questions feel free to ask and I will be more than glad to help!
Thanks
Brad
We don't use the 1/2" bolts because the mounts on the vehicle need drilled out or reamed for the bolt... they are just slightly under .500"
^^^ it sounds hear that he is saying that they will exect both 1/2 and 12mm. why not just make your bushings to take 12mm?
The sleeving that we all use is sae sizing and the bolts are all metric from the manufacturer. Can't find metric tubing.
Trending Topics
From a minor convenience standpoint I'd stick with the 12mm bolt. Every fastener (except the lug nuts) on these cars is metric. It's just easier to use one set of sockets instead of having to bonce between the two.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo A 1/2" bolt is slighty larger than a 12mm so it would be stronger based on its size. But the 12mm 10.9 grade material is equal to a 1/2" grade 8 bolt.
Our controls will except both a 12mm bolt or a 1/2" bolt, the mounts on the car will not accept a 1/2" bolt with out drilling.
Our controls will except both a 12mm bolt or a 1/2" bolt, the mounts on the car will not accept a 1/2" bolt with out drilling.
not to start a rating game.
and you cant find metric tubing? that is probly true. but will a solid piece of shaft and a 12mm bit you could mill them out.
If both bolts are of the same grade, and made by the manufacture, with the same stock of raw material on the same bolt header, and have the same shoulder and head design, then the 1/2 inch would be stronger because it's OD is 0.7mm greater.
However, it's very rare for the above conditions to be met. Therefore, statistically, they are probably about the same.
However, it's very rare for the above conditions to be met. Therefore, statistically, they are probably about the same.
If both bolts are of the same grade, and made by the manufacture, with the same stock of raw material on the same bolt header, and have the same shoulder and head design, then the 1/2 inch would be stronger because it's OD is 0.7mm greater.
However, it's very rare for the above conditions to be met. Therefore, statistically, they are probably about the same.
However, it's very rare for the above conditions to be met. Therefore, statistically, they are probably about the same.