1Y big power Build

[regcheeseman]

Ryan,

Theres a post on caddy forum with a good source for ARP head studs

I would want the 1Y inlet manfold if you are not going to use it....

I also have a mechanical design for VNT control if you want that option.

[carrizog60]

ANY bolts are better than IDI bolts..
but studs are way better than any bolts.

any specs on that?

[Rabbit on Roids]

how many guys on here are running head bolts?
i know i still have stock bolts, but i dont have monster power.
if you build power and use bolts, you will blow the head off and mess up the block. ive done it.

USE HEAD STUDS!

if you look at the specs on ARP's page, they are way way tougher than stock bolts. and the nut that threads on the stud is really fine thread pitch, so it has greater clamping force. i bet the price difference between a new set of PD 150 bolts and 1.6 ARP's is only a few bucks.

[MJF]

how many guys on here are running head bolts?

No problems with stock bolts&fiber gasket, had only 170hp/300nm at that time. But changed ARP studs and metal gasket to be sure.

[Rabbit on Roids]

i had 35 psi of boost with stock 11mm bolts and a 5 notch gasket. ran it like that for almost a year. then i was racing a honda and forgot to pay attention to my gauges for just long enough to make way too much boost, then POP! if i would have had a way to bleed off excess boost, i think i could have ran 35psi alot longer.

[subsonic]

headbolts.com

[regcheeseman]

1.5 / 1.6 / 1.9 sohc 8 valve diesel turbo and non turbo (note arp lists this number for ford cosworth !)
12 pt nuts with under cut studs with 12mm threads arp part no: 251-4701