September 24, 2018, 09:14:25 AM

Author Topic: ARP Crank bolt procedure  (Read 298 times)

Offline Gunnytron

ARP Crank bolt procedure
« on: August 22, 2018, 03:46:58 AM »
The installation instructions for the ARP Crank bolt are different between ATI and ARP are different.

ATI say to use high temp rtv on both sides if the washer and Tighten to 230 ft ib .

ARP say to use the supplied lube on threads and washer then tighten to 235 ft lb.

Who do I go with?
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline radiomike

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Re: ARP Crank bolt procedure
« Reply #1 on: August 22, 2018, 05:54:03 AM »
The OE LS crank bolt has an integral washer with a seal to prevent leaks from any oil that gets between the crank and pulley, I would suggest using a small amount of sealer on the washer as suggested by ATI and the usual ARP lube on the bolt threads.

Offline digitalsolo

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Re: ARP Crank bolt procedure
« Reply #2 on: August 22, 2018, 07:52:23 AM »
I've always used the ARP method and not had issues.
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Offline wickedrx7

Re: ARP Crank bolt procedure
« Reply #3 on: August 22, 2018, 11:01:16 AM »
I didnít seal my arp bolt on the stock damper, I havenít seen an issue with leakage.


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Offline Gunnytron

Re: ARP Crank bolt procedure
« Reply #4 on: August 22, 2018, 05:23:19 PM »
My existing setup is ATI pulley with standard GM bolt. The bolt was covered in oil so I have to assume it wasn't sealing. It may even be the cause of what I though was a leaking crankshaft seal.
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline jwvand02

Re: ARP Crank bolt procedure
« Reply #5 on: August 22, 2018, 08:57:12 PM »
My existing setup is ATI pulley with standard GM bolt. The bolt was covered in oil so I have to assume it wasn't sealing. It may even be the cause of what I though was a leaking crankshaft seal.
In case you didn't know, the stock GM bolt is TTY so don't reuse it.

Offline Gunnytron

Re: ARP Crank bolt procedure
« Reply #6 on: August 23, 2018, 01:17:06 AM »
My existing setup is ATI pulley with standard GM bolt. The bolt was covered in oil so I have to assume it wasn't sealing. It may even be the cause of what I though was a leaking crankshaft seal.
In case you didn't know, the stock GM bolt is TTY so don't reuse it.

I did thanks. This is the third time I've removed the pulley so that's why I ordered the ARP one.
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline Exidous

Re: ARP Crank bolt procedure
« Reply #7 on: August 23, 2018, 05:19:44 AM »
Just make sure you are using a tool to push it on and NOT the bolt. It will kill the crank threads. All you needs is some all thread, a nut , couple thick washers and a properly sized pipe.

That being said, I've done both. If it leaks, use silicone.
94 BB SBE LS1 Full Mamo top, MS3ProU with TC, RONIN 8.8 and another custom dual 2.5" stainless exhaust. Too loud, need bigger muffler....

Offline Gunnytron

Re: ARP Crank bolt procedure
« Reply #8 on: September 09, 2018, 06:22:09 AM »
I emailed ATI.... No response. One thing I did manage to completely overlook last time was that you are suppose to fill the keyway slot with silicone.

Still got at least a week until my bolt turns up :(
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.