Modding for ARP head studs!

[boost_boy]

I've decided to have my heads modified to accept the ARP head studs that I have. Yes, the CA18's headbolt chambers are too small to accomodate a sock larger than 12mm and the ARP hardware is 14mm. I have some fresh (unused) stock head bolts that I am willing to let go for around $30. They will come in a plastic wrapper with an anti-seize compond on their threads. This is a great price for anyone doing a new headgasket or a major clean-up.

Dee

[rico05]

So what is the final price? Def. gonna be $30? I may be interested.

[Doogz]

I'll take em

[gani]

how come you got to modify your heads for the studs i thought the fit right in like the sr ones.

[boost_boy]

Quote »how come you got to modify your heads for the studs i thought the fit right in like the sr ones.[/quote] SR and CA have totally different heads. Trust me, they just don't fit. $30 is the final price.

Dee

[gani]

no no i didnt mean use the arp sr head studs i meant dont the arp studs for the ca just fit like the stock bolts?

[boost_boy]

I knew exactly what you meant, but the answer is "No" . The area where the stock head bolts drop through is beefed-up by aluminum from the lifter housings. It has to be modified for proper fitment.

Dee

[gani]

that is very intresting. nice to know now before i ran into problems

[biosehnsucht]

got pictures showing how they interfere? I don't understand how they would since the stock bolts fit fine..

[boost_boy]

Quote »that is very intresting. nice to know now before i ran into problems[/quote] Glad to be of some help! I don't have secrets when it comes to people spending good money on the products that I proclaim to use on my vehicles. I wouldn't recommend it if I couldn't use it myself.

Dee

[boost_boy]

Quote »got pictures showing how they interfere? I don't understand how they would since the stock bolts fit fine..[/quote] Just take my word on it! We've had this discussion many months ago, but even with the corrected part #s, the area still needs to be dremelled-out to fit a 14mm socket in the galleys where the headbolts go.

Dee

[boost_boy]

Headbolts are sold:rockon

Dee

[boost_boy]

Quote »I don't understand how they would since the stock bolts fit fine..[/quote] And remember, the stock headbolts require a 10mm allen key socket and even that's tight. The nuts from ARP require a 14mm/12point socket (big difference in diameter).

Dee

[gani]

yeah got the same problem on 2jz and 1jz motors when using the arp studs

[biosehnsucht]

ahhhh yes, I see what you mean now. I was thinking you meant that the studs would somehow hit something.

That makes perfect sense, that you couldn't get a socket on there if even the nut...

well that's easy to do, I gots teh dremel.. just do it before getting the sucker cleaned up haha

[boost_boy]

Quote »well that's easy to do, I gots teh dremel.. just do it before getting the sucker cleaned up haha[/quote] THat's the ticket;) ! The only problem is one of my heads are already assembled and I would hate for my friends to start mismatching the shims that are under the solid lifters. Oh well, we'll see.

Dee

[boost_boy]

Well,

To put it bluntly, I was dead-@$$ wrong about the 14mm ARP nut. It's not a 14mm, but actually a half inch 12 point nut. I installed them on my built motor and they went in drama-free; tight, but drama-free. So it's official, the part #s that were given is actually a plug and play deal for CA18 owners, but please keep it on the low-low (it's our little secret);) :fruit And remember, the fruit is watching you:D

Dee