ARP Head bolt kit...
- Thread starter suprflyusmc1
- Start date
And ARP bolts use a three eighths drive, 12 point, 1/2" socket. Anything else will round the head of the bolt off nicely.
JustAnotherVictim
Supramania Contributor
some dude on craigslist found them in the garage of his cousin, who was a wholesaler of engine parts at one time. He didn't know if it was a complete kit or not. That's why I asked if 14 was the right number.Datsrboi said:
Eh - i got my set for $47, although they were missing washers.
eBay had a few gems every now and then
eBay had a few gems every now and then
Kai said:Aaah i always used 1/2" drive instead....3/8" just seems a little flimsy in my gargantuan hands
Depending on the head casting, a lot of times a 1/2" deep well socket will not fit down the hole to engage the bolts...the wall thickness of the socket is too much. You have to use a 3/8" socket with a 3/8" to 1/2" adapter for the torque wrench.
Yep, thats why I said 3/8" drive because it "BARELY" fits past the casting of the lifter bores. 1/2" drive will not cut it. Use adapter as stated. Use a DIGITAL torque wrench they go down to the .1 of a foot pound, very accurate if the wrench has been calibrated correctly and was not abused since the calibration.
And whoever chopped my quote up and said 14mm you are wrong. I just retorqued last weekend, I know its 1/2" not 14mm. Yes its hard to believe ARP used standard size head and metric threads, but I think they know what they are doing.
And whoever chopped my quote up and said 14mm you are wrong. I just retorqued last weekend, I know its 1/2" not 14mm. Yes its hard to believe ARP used standard size head and metric threads, but I think they know what they are doing.
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when i did my head job i had to go out and buy an s&k (i think thats the name) thin walled socket to torque down the studs. i have lots of sockets and couldnt find one that worked.
i had arps and was wondering wtf size i needed to get them off...
my 1/2" 6 point wouldnt work even... is it supposed to work?
my 1/2" 6 point wouldnt work even... is it supposed to work?
Nope. A 12 point bolt requires a 12 pt socket. The reason there is a difference between a 6 pt 1/2" socket and a 12 pt 1/2" is because there is more material removed on the 12pt socket. That is why a 6 pt is too big. And thats the same reason you should not use a 12pt on a 6pt bolt, less material to grip the bolt head, can easily be rounded off.
ARP head bolts require a 12pt 1/2" socket.
ARP head bolts require a 12pt 1/2" socket.
Frank Rizzo said:
sweet thanks for telling me that.. good to know.. heading to the store to pick up a deep and normal 12pt...