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ARP Head Studs
For those who asked, I bought the studs from ARP about two years ago. At first I was told that they would have to be custom and they would be expensive. I took all the measurements and called back. The guy I talked to remembered putting a set together for someone else. He put together a set and shipped them out. 300 bucks or so. When I called recently to try to get another set made in 14mm, they said they had no record of my sale and it would have to be custom order. I remebered talking to John at Outback Motorsports about trying to solve the head sealing problems and he suggested 1/2 studs as they run them on their big boost 4 cylinder motors. He also mentioned that he had a used set for an SVX. I called him last week and he still had them so I bought them. They should arive today. When you look at the 11mm bolts, they are pretty weak looking. The guys that run the STi's with 37 RWHP are doing so with 14mm bolts. Of course the block has to be re-tapped and the heads drilled. Here's picks of the ARP studs.
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