ART Pipes Hardware

MaQG37 · 01-25-2017, 04:09 PM

I am looking to use high quality hardware to secure my ART pipes to my stock manifold. I'm going to be tightening my bolts because I have a leak somewhere and thought I'd replace my current cheap home depot stuff with good quality hardware. The size of the bolts I have found is (8) -3/8 x 1.5" Bolts
(8) -3/8 x 1.5" Nuts.

From a search, I found a user who used:

1) ARP SS bolt = 3/8-24, 1.5" length, 7/16" hex socket, (725-1500)
2) ARP SS washer = 7/16" ID, 13/16" OD, 1/8" thick (400-8509)
3) ARP SS nut = 3/8-24, 7/16" 12pt socket, (400-8302)

These are quite expensive for hardware. What is everyone else using?

crazy4oldcars · 01-25-2017, 04:39 PM

Can't comment to specific hardware, but I can for stainless nuts and bolts in general.
Make double damned sure you are using some form of never seize on those bolts. Even if it's just a trial fit up. SS bolts will gall up and freeze together at the slightest provocation. Or no provocation, lol.
I thought grade 8 bolts were required for automotive applications? Or is that just engine internals?

Good luck.

Kirk B.

ChaseZ · 01-25-2017, 04:54 PM

I just used the grade 5 hardware that came with the pipes. Though I also took out the ridiculous OEM threaded studs and replaced with normal bolts at the same time.

01-25-2017, 04:09 PM	#1 (permalink)
MaQG37 Base Member Join Date: Jul 2015 Location: Austin, TX Posts: 36 Drives: G37S 6MT Rep Power: 9	ART Pipes Hardware I am looking to use high quality hardware to secure my ART pipes to my stock manifold. I'm going to be tightening my bolts because I have a leak somewhere and thought I'd replace my current cheap home depot stuff with good quality hardware. The size of the bolts I have found is (8) -3/8 x 1.5" Bolts (8) -3/8 x 1.5" Nuts. From a search, I found a user who used: 1) ARP SS bolt = 3/8-24, 1.5" length, 7/16" hex socket, (725-1500) 2) ARP SS washer = 7/16" ID, 13/16" OD, 1/8" thick (400-8509) 3) ARP SS nut = 3/8-24, 7/16" 12pt socket, (400-8302) These are quite expensive for hardware. What is everyone else using?

01-25-2017, 04:54 PM	#3 (permalink)
ChaseZ A True Z Fanatic Join Date: May 2016 Location: Calgary Posts: 3,799 Drives: 16 370z Rep Power: 94682	I just used the grade 5 hardware that came with the pipes. Though I also took out the ridiculous OEM threaded studs and replaced with normal bolts at the same time. crazy4oldcars likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
370z Midpipes/Down Pipes/Y-Pipes/Test Pipes and HFC!! Best Prices in town!	JM Auto Racing	Exhaust/Intake	472	11-28-2022 12:57 PM
15' Nismo Hardware?	FLUJOKE	Exterior & Interior	0	09-14-2016 02:03 PM
[FOR SALE] Z1 used test pipes with new hardware, Tamarac FL.	Infiniti370z	Parts for sale (Private Classifieds)	40	02-04-2016 01:44 PM
Can you sale your uprev hardware?	SlvrZ	Nissan 370Z General Discussions	9	11-10-2015 09:13 AM
Stillen Install Hardware	Waldrip405	Intake/Exhaust	2	10-23-2013 01:46 PM

01-25-2017, 04:39 PM	#2 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28412	Can't comment to specific hardware, but I can for stainless nuts and bolts in general. Make double damned sure you are using some form of never seize on those bolts. Even if it's just a trial fit up. SS bolts will gall up and freeze together at the slightest provocation. Or no provocation, lol. I thought grade 8 bolts were required for automotive applications? Or is that just engine internals? Good luck. Kirk B.