Rod bolt torque
Rod bolt torque installed new ARP 8740 7/16 1.75" rod bolts into new forged rods. I tightened both bolts first to 15 ft/lbs then tightened the top bolt to 63 ft/lbs and then the bottom bolt to 63 ft/lbs. I know my torque value is correct im asking about my sequencing, do you see any issues with the way i did this or am i over thinking things again?
ARP bolt tightening http://arpinstructions.com/index.php
Enter the bolt part number and a pdf instruction spec sheet is presented with the correct method to tighten that particular bolt.
Always check the rod big end for size and out of round when replacing bolts.
Enter the bolt part number and a pdf instruction spec sheet is presented with the correct method to tighten that particular bolt.
Always check the rod big end for size and out of round when replacing bolts.
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Man i will be honest I am pretty frustrated with ARP... they cant seem to get their **** strait. call them 5 times and ask the same question about torque spec of a certain bolt and you will get 3 or 4 different answers.... I actually went down the street SCAT walked in and chatted with a tech. 63 ft/lbs is/was the correct torque spec for my bolts.
funny you say 75 ft/lbs on a 7/16 8740 because when i called ARP that's what they told me the 7/16 2000 torque out to.
I love ARP but damn they need to be more consistent on their tech advice
funny you say 75 ft/lbs on a 7/16 8740 because when i called ARP that's what they told me the 7/16 2000 torque out to.
I love ARP but damn they need to be more consistent on their tech advice
Trending Topics
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
Likes: 8
From: Katy, TX
Man i will be honest I am pretty frustrated with ARP... they cant seem to get their **** strait. call them 5 times and ask the same question about torque spec of a certain bolt and you will get 3 or 4 different answers.... I actually went down the street SCAT walked in and chatted with a tech. 63 ft/lbs is/was the correct torque spec for my bolts.
funny you say 75 ft/lbs on a 7/16 8740 because when i called ARP that's what they told me the 7/16 2000 torque out to.
I love ARP but damn they need to be more consistent on their tech advice
funny you say 75 ft/lbs on a 7/16 8740 because when i called ARP that's what they told me the 7/16 2000 torque out to.
I love ARP but damn they need to be more consistent on their tech advice
63 for 8740
75 for 2000
both @ 7/16 dia
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Sounds like this is the first time you've torqued them.
Which means you didn't torque them and take measurements of the big-end diameter before installing them. Or at least use Plastigage.
Failure guaranteed.
Which means you didn't torque them and take measurements of the big-end diameter before installing them. Or at least use Plastigage.
Failure guaranteed.
In my experience, the best way is to use a stretch gauge. It's not uncommon to have to increase torque to get the recommended stretch. The ARP 2000 bolts in my stock rods for example had to go to 55ft-lbs.
The way I read it, he hasn't installed the rods, just the bolts into the rods.
