So I have been reassembling a built motor with the driftspeed video - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

filluptieu · 10-31-2012, 10:28 PM

And using the arp head studs they say to go up to 70 and it seems like alot of people on the forum say 85? I know the guy doing it is a pro but still wanted a second opinion.

801nismo104 · 10-31-2012, 10:36 PM

the head studs should of came with a paper that tells you how to install them and torque specs. i torqued mine down to 80ft lbs iirc

91ka24 · 11-01-2012, 05:23 AM

Just do what the instructions tell u.

ForeignMuscle · 11-01-2012, 05:29 AM

ARP sheet said 80ft/lbs when I installed mine.

Davidna2fi · 11-01-2012, 12:25 PM

If this is your first time using a set of fresh ARPs, tighten them, loosen them at least 3 times, put a paint mark the first time and you'll see how many more turns you'll get. ARPs do stretch a little, but it'll help if they don't stretch over time.

zo0d · 11-06-2012, 12:54 PM

To qoute a user from another forum:

"i'm sure the arp's studs don't care much about anything. i had 2 machinist tell me that if you going to use the arps and torque them to arp specs, the main caps will bend or deform slightly to where the bearing clearance will be too tight. thats exactly what happened to me, crank would not turn. use factory bolts at factory torque spec, all is good. just saying don't spend the extra 100 on arp mains unless your ready to spend the extra 200 to line hone the mains."

10-31-2012, 10:28 PM	#1
filluptieu Zilvia Junkie Join Date: Oct 2009 Location: Houston, TX Posts: 549 Trader Rating: (13) Feedback Score: 13 reviews	So I have been reassembling a built motor with the driftspeed video And using the arp head studs they say to go up to 70 and it seems like alot of people on the forum say 85? I know the guy doing it is a pro but still wanted a second opinion.

10-31-2012, 10:36 PM	#2
801nismo104 Zilvia Member Join Date: May 2010 Location: Utah Posts: 233 Trader Rating: (8) Feedback Score: 8 reviews	the head studs should of came with a paper that tells you how to install them and torque specs. i torqued mine down to 80ft lbs iirc

11-01-2012, 05:23 AM	#3
91ka24 Zilvia Junkie Join Date: Sep 2010 Location: Oklahoma city, ok Age: 35 Posts: 414 Trader Rating: (11) Feedback Score: 11 reviews	Just do what the instructions tell u.

11-01-2012, 05:29 AM	#4
ForeignMuscle Zilvia Addict Join Date: Feb 2012 Location: Ya momma's house Posts: 860 Trader Rating: (16) Feedback Score: 16 reviews	ARP sheet said 80ft/lbs when I installed mine.

11-01-2012, 12:25 PM	#5
Davidna2fi Zilvia Junkie Join Date: May 2008 Location: Houston, TX Posts: 513 Trader Rating: (18) Feedback Score: 18 reviews	If this is your first time using a set of fresh ARPs, tighten them, loosen them at least 3 times, put a paint mark the first time and you'll see how many more turns you'll get. ARPs do stretch a little, but it'll help if they don't stretch over time.

11-06-2012, 12:54 PM	#6
zo0d Zilvia Member Join Date: Apr 2008 Location: New Jersey Age: 34 Posts: 259 Trader Rating: (1) Feedback Score: 1 reviews	To qoute a user from another forum: "i'm sure the arp's studs don't care much about anything. i had 2 machinist tell me that if you going to use the arps and torque them to arp specs, the main caps will bend or deform slightly to where the bearing clearance will be too tight. thats exactly what happened to me, crank would not turn. use factory bolts at factory torque spec, all is good. just saying don't spend the extra 100 on arp mains unless your ready to spend the extra 200 to line hone the mains."