psychoballistic

iTrader: (8)

Hey guys,

I'm putting my assembly back together this weekend and was searching to find torque specs for all the key parts of our motors.

I used mostly stock torque specs last time with the exception of the head studs and mains previously, but wanted to see if there is a different consensus.

I'm running the ARP L19's and main studs. The Carillo rod bolts I took from the spec sheet provided by carillo, but I'm wondering about the cam caps, and what you guys are using for torque specs on your L19's and ARP mains. I know there are lots of different opinions, but was hoping to get it collaborated in one thread for ease of myself and others in the future.

Thanks in advance.

binder

iTrader: (8)

email me and I'll send you the 350z service manual. All the engines I've assembled have been by the book service manual except for the head studs. I use 85ftlbs on the L19s.

jeffbinder@gmail.com

Resmarted

iTrader: (2)

I used 94lbs on the l19's torqued in equal increments, a total of 4 stages. Anywhere around 90 is fine +/- 5lbs usually.

binder

iTrader: (8)

I went back down from 90 since I pulled 3 studs out on my last block going to 90. Calibrated matco torque wrench so it wasn't the torque wrench or my technique. Never had a problem on any of the hundreds of bike engines I've torqued before.

I know many have never had issues but I just didn't trust going that high again. 650hp and I'm not worried the head gasket will lift or blow.

MR RIZK

iTrader: (7)

figures that were listed on the forum ages ago

90-95 ft/lbs for the L19
60-65 ft/lbs for the ARP Mains

Resmarted

iTrader: (2)

That's really strange, but I understand where you're coming from. I doubt you'd see any headlift even if you went up to around 800... L19's take a lot to actually fail.
Did the bottom of the studs just yank out of the block when you were torquing them or...?