New forged rods w/ arp bolts..what torque?

Post by **TheZaZ** » March 27th, 2011, 2:25 pm

Ive searched my butt off. I cant seem to find what torque I need to tighten the arp rods bolts to. I have new forged rods from RPMMAXX.com

They came installed with the arp 8740 bolts. Any help would be greatly appreciated.

Post by **Busey** » March 27th, 2011, 3:16 pm

my ARP rod bolts came with a card that said to torque them tp 40ft lbs with the supplied lube. #112-6001 bolts

Post by **shawnxj** » March 27th, 2011, 4:19 pm

have any specs on the rods? i looked at the website and it didn't give any info. not even a price

Post by **TheZaZ** » March 27th, 2011, 4:39 pm

They Came from 505 performance so I dont have any info. They look exactly like the MAXX-PRO Billet I Beam Rods on their site but I cant find any info anywhere. (Their name was on the side of the rod, thats how I knew it came from them)

Post by **Busey** » March 28th, 2011, 7:07 am

the only 8740 alloy cap screw rod bolt shown in the ARP cat. are 7/16" with a torque rating of 75 ft lbs. I would check with 505 perf. to make sure, 75 Ft lbs sounds high to me.

Post by **TheZaZ** » March 28th, 2011, 9:46 am

I got ahold of RPM. They said 62ft/lbs.....glad i called. Never would have guessed that much.

Post by **TheZaZ** » March 28th, 2011, 10:28 am

Talked to 505 and was told 40ft/lbs....now im confused

Post by **shawnxj** » March 28th, 2011, 4:08 pm

plastigage it

Post by **TheZaZ** » March 28th, 2011, 4:19 pm

Yea good point. Ill do 40 and check it

Post by **TheZaZ** » March 28th, 2011, 4:48 pm

Just checked them. 62ft/lbs and its sittin between .0015 and .002. Its a hair wider then the .002 but a hair under .0015.

Post by **shawnxj** » March 28th, 2011, 8:03 pm

sounds about right then

Post by **TurboTom** » March 29th, 2011, 2:37 pm

?????????????
Proper rod bolt torque cannot be determined by bearing clearance !!

Post by **TheZaZ** » March 29th, 2011, 4:40 pm

Arp said to go with who made the rods...and he said the arp bolts in my rod were made specifically for rpm so they are the ones to go with.

Post by **BDD** » March 30th, 2011, 11:37 am

TurboTom wrote:?????????????
Proper rod bolt torque cannot be determined by bearing clearance !!

X2-torque or stretch,ive never heard of using clearence to check torque on a rod bolt

Post by **IH 392** » March 30th, 2011, 6:01 pm

Yep, the torque spec is a generalization of the stretch, big $$$$ engine builders use a dial indicator stretch gauge when tightening the rod bolts.
The MILODON rod bolts in my 360 torque at 40ftlbs with molly lube, I'm surprised that ARP didn't give a more straight answer than that!!??

New forged rods w/ arp bolts..what torque?

New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

Re: New forged rods w/ arp bolts..what torque?

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