ARP 12pt vs 6pt bolt kits
Thread Starter
Melting Slicks
Joined: Jan 2001
Posts: 2,635
Likes: 2
From: Aloha, Oregon
ARP 12pt vs 6pt bolt kits
I've been awaiting ARP's reply to my email on what precisely are the differences (aside from the visual differences) between a 12pt and 6pt bolt of the same material. is there an actual yield difference? torque specs different? Does anyone know the facts? there is definitely a cost difference between the 2 otherwise identical bolts/nuts.
Instructor
Joined: Dec 2002
Posts: 155
Likes: 0
From: Bristol Tenn.
Re: ARP 12pt vs 6pt bolt kits (rwj383)
I talked to my engine guy and he said there was no diff. between the 12pt. and the 6pt., just the nut. I opted for the 6's since they are cheaper and do the same job. Also from what I researched the 12's are on backorder and will be for a while. Hope this helps with your decision
Thread Starter
Melting Slicks
Joined: Jan 2001
Posts: 2,635
Likes: 2
From: Aloha, Oregon
Re: ARP 12pt vs 6pt bolt kits (Nitrous Nate)
well, ARP better have a better reason than 'just a different shape' to charge that much more over the 6pt. Long ago someone that has been using ARP for many years explained some convincing reason to me, and i forgot what it was. Hmmmm...
When i built my motor last year i bought to 12 pt over the 6 pt. Those that i am helping with their motor mods around here have turned to me for this answer. If there isnt one, i will tell them just to buy the 6pt set.
When i built my motor last year i bought to 12 pt over the 6 pt. Those that i am helping with their motor mods around here have turned to me for this answer. If there isnt one, i will tell them just to buy the 6pt set.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 905
From: Lake Elsinore, CA
Re: ARP 12pt vs 6pt bolt kits (rwj383)
A buddy and I installed the 6-pt. ARP head studs when we did h/c on both our cars recently and have had zero issues. I have had my heads off several times since and they held the torque with no problem. I'd be interested to hear what the differences are as well.
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
Re: ARP 12pt vs 6pt bolt kits (rwj383)
I think its mainly preference. I got the 12 points because I feel like they are easier to torque down, the socket moves less/less chance of rounding off nuts.
Phillip :skep:
Phillip :skep:
Safety Car
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St. Jude Donor '09
Re: ARP 12pt vs 6pt bolt kits (Phil97SVT)
I think its mainly preference. I got the 12 points because I feel like they are easier to torque down, the socket moves less/less chance of rounding off nuts.
Phillip :skep:
Phillip :skep:
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Re: ARP 12pt vs 6pt bolt kits (rwj383)
Seems I have designed a few nuts & bolts ...........
12 point head reduces the chance of tool slippage.
Smaller head allows for use in confined areas.
A 12 Point design offers the same bearing surface as a hexagon head cap screw or socket head screw of comparable size.
Other features include better torque distribution due to less peak loads and effective use in counter-bored or spot faced applications because of smaller head diameters.
Have a nice day
:thumbs: :D
[Modified by ALLTHROTTLE&NOBOTTLE, 1:09 PM 2/4/2003]
12 point head reduces the chance of tool slippage.
Smaller head allows for use in confined areas.
A 12 Point design offers the same bearing surface as a hexagon head cap screw or socket head screw of comparable size.
Other features include better torque distribution due to less peak loads and effective use in counter-bored or spot faced applications because of smaller head diameters.
Have a nice day
:thumbs: :D
[Modified by ALLTHROTTLE&NOBOTTLE, 1:09 PM 2/4/2003]
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