ARP Crank pulley bolt - Performance Forum

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ARP Crank pulley bolt
Sunday, January 29, 2012 5:06 PM
Has anyone replaced the stock bolt with one from ARP?

I've searched on here and can't find a post on it.

I've thought about getting one but I'm unsure of the thread and pitch.


"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"


Re: ARP Crank pulley bolt
Sunday, January 29, 2012 6:59 PM
Tried it, couldn't find one like it. All my others are arp thought polished



Re: ARP Crank pulley bolt
Sunday, January 29, 2012 7:18 PM
I should also specify I'm talkig about for a ld9.


"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"

Re: ARP Crank pulley bolt
Sunday, January 29, 2012 7:23 PM
i thought about doing a titanium bolt/washer as it is quite heavy... but at a custom cost of like $120 i was turned off.



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Re: ARP Crank pulley bolt
Sunday, January 29, 2012 7:26 PM
Brad, what is the thread and pitch of the bolt?


"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"

Re: ARP Crank pulley bolt
Sunday, January 29, 2012 7:47 PM
no idea man. i was just gonna send it off to trick titanium and they were going to make a titanium copy.



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Re: ARP Crank pulley bolt
Sunday, January 29, 2012 7:59 PM
stock bolt will be fine....anythign else might not have the tensile strength that is needed....its like 6 dollar bolt brand new. torque to yield. IMO stock should be fine for anything you can throw at it thomas.



Re: ARP Crank pulley bolt
Monday, January 30, 2012 10:18 AM
^^ agreed. and i dont think its TTY as ive reused them over and over again without issue.



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Re: ARP Crank pulley bolt
Monday, January 30, 2012 10:53 AM
it is TTY brad......doesnt mean you CANT reuse it, but its TTY. i promise...



Re: ARP Crank pulley bolt
Monday, January 30, 2012 12:38 PM
Maybe thats why it came loose on me before. ROFL!










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Re: ARP Crank pulley bolt
Monday, January 30, 2012 12:42 PM
I know the ecotecs are torqued to yield, but I do not believe the LD9's are. no matter if they are or not it is always a good idea to replace them.




PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

Re: ARP Crank pulley bolt
Monday, January 30, 2012 2:30 PM
[ion] C2 Online
EvoFire wrote:its like 6 dollar bolt brand new. torque to yield.

Where can I get an LD9 bolt locally? I always re-used mine... probably would be smart to use a new one this time.


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
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Re: ARP Crank pulley bolt
Monday, January 30, 2012 2:44 PM
If you could figure out the thread and length you could buy an AN bolt. Same strength as grade 8 but they're gun drilled and pre-drilled for safetywire, So they're lighter.


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Re: ARP Crank pulley bolt
Monday, January 30, 2012 2:45 PM
i bought a new crank bolt at a dealership for $6.36



Re: ARP Crank pulley bolt
Monday, April 02, 2012 7:25 PM
Been a while but thought I would update. I was on summit looking for other ARP bolts and noticed their harmonic bolts and started researching again.
The bolts are M18X1.5X38. The largest I could find was a m16. I will check with ARP to see if they have anything that large.


"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"

Re: ARP Crank pulley bolt
Monday, April 02, 2012 7:35 PM
I would just replace it with another torque to yield bolt. Its not one I see REALLY needing an ARP bolt for. Especially one that long and thick.



Re: ARP Crank pulley bolt
Monday, April 02, 2012 8:07 PM
I know its not really needed. It was a thought that since I'm replacing it I might as well upgrade.


"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"

Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 3:48 AM
I'll look in my service manuals to see if the LD9 crank bolt is TTY like the ecotecs are.




PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 7:33 AM
id definitely like to know... plus, mike.. that'd be a good "liability" note for your pulley sales. "md ld9 enterprises in no way shape or form condones the re-use of TTY crankshaft pulley bolts. re-use at own risk" hahaha something like that



Come join us over on the Olds Quad 4 and Twin Cam Facebook group!
Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 8:37 AM
All my Group purchases all ready have the legal rundown of that in them. lol




PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 10:02 AM
Mike your coming out with lightweight Titanuim crank pulley bolts.... SWEET! Lol freaking do it!

Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 12:22 PM
if you could get the cost of it down to say 20 or 30 dollars then it might be ok but really, its on the centerline of the crank its not going to give any noticable gain whatsoever. it just be cool to say "yup, i have a titanium crank bolt!" hahaha

but still, every little bit helps.



Come join us over on the Olds Quad 4 and Twin Cam Facebook group!
Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 1:00 PM
-MD- Enforcer wrote:I'll look in my service manuals to see if the LD9 crank bolt is TTY like the ecotecs are.


i told you guys this already!!!!

-Z Yaaaa- wrote:if you could get the cost of it down to say 20 or 30 dollars then it might be ok but really, its on the centerline of the crank its not going to give any noticable gain whatsoever. it just be cool to say "yup, i have a titanium crank bolt!" hahaha

but still, every little bit helps.


that kinda ricer brad!



Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 1:10 PM
EvoFire wrote:
-MD- Enforcer wrote:I'll look in my service manuals to see if the LD9 crank bolt is TTY like the ecotecs are.


i told you guys this already!!!!that kinda ricer brad!

Yes Ecotec crank bolt is TTY.....What about an LD9?




PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Re: ARP Crank pulley bolt
Tuesday, April 03, 2012 2:14 PM
YES!!!



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