Ted B

iTrader: (6)

I'm not saying it isn't useful. I am saying that the timing is more than likely too far advanced. That does not mean you would necessarily hear knock. With high octane fuels, it is possible to have the timing too far advanced without any audible knock.

Again, the head gaskets you are blowing are proven parts. The studs you are using are proven with the correct 108-110 nm torque, assuming you are torquing them in the correct sequence and with the ARP lubricating grease. There are plenty of people who have made far more power than you or me over the years with ARP 2000s and the correct torque.

Roadrunr

iTrader: (24)

If you are using L19 and not the standard ARP studs, you should be torquing to 100 LBS.

ARP recommends

11mm require 90-95lbs tq using ARP lube

Don

Ted B

iTrader: (6)

If the L19s call for 90-95lbs (125-130nm) with ARP lube, than that is what should be used. ARP changed their lube not long ago, so I recommend making no assumptions from memory, and double checking what is specified on the sheet that comes in every box.

n2oiroc

iTrader: (33)

arp is very conservative with their specs. for sti's they used to recommend 72. at that spec many guys were lifting the heads. they later revised it to 85. i went 95 and never had any issues.

Ted B

iTrader: (6)

ARP torque settings represent 75% yield of the fastener itself (according to ARP). That means the static preload itself applies 75% of the force required to cause the stud to stretch or just plain fail. If the OP is using the incorrect torque specified for that particular fastener(?), that would represent human error.

Stradale

Ok .. so at least it is better to torque those stud to 95 lbs right?

n2oiroc

iTrader: (33)

yes.

Roadrunr

iTrader: (24)

I just finished A full Buschur 2.3 build with L19 head studs. The one and only Master David Buschur recommended 100 LBS. I am just trying to be helpful and pass this info. on to the Op.
Don

SmurfZilla

iTrader: (33)

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Stradale

Thank you for all who shares the information here. Let me try it with retune ECU and tighter torque ...