Help Stripped Crank Snout Threads - Page 4 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

NC-V · 04-09-2012, 07:53 PM

Quote:

Originally Posted by ztsmith86

Is it possible to pin our LS3 crank snouts? I have seen kits for the LS1 motors, but their snouts are different. If I could properly seat the balancer without using threads (heating it in an oven to 300 degrees then using a 2x4 and sludge hammer) maybe I could just pin it and call it a day? I'm still toying with ideas. Please keep helping me with suggestions. Thanks for any help

I HIGHLY recommend not doing that. Pinning it is never a bad Idea, but hammering on a balancer is always a bad idea. Even more so with an AL block. Since there is no keyway on these cranks, the balancer is a very tight press fit. Even hotplating or heating the balancer you would have to beat it on and risk throwing your crank endplay way out of wack or cracking your block/mains.
As for solutions, I would talk to a machine shop and have them make a solid thread in replacement thread slug so that you can use a factory or ARP bolt. Find out the thread depth of the crank and have a machine shop make a thread slug that long in 16mm. Have them cut the outside to the smallest diameter thread that you can safely tap the crank out to and still have necessary thread engagement.

grocerygetter · 04-09-2012, 07:58 PM

yeah...no pounding. lol
all the blower kits come with a guide and pin kit. You can make your own pin easily. You just need the guide.

blackonblacksls · 04-09-2012, 09:08 PM

HA HA, NO! it would still wobble its way off if you don't have a bolt holding it in.

Quote:

Originally Posted by ztsmith86

Is it possible to pin our LS3 crank snouts? I have seen kits for the LS1 motors, but their snouts are different. If I could properly seat the balancer without using threads (heating it in an oven to 300 degrees then using a 2x4 and sludge hammer) maybe I could just pin it and call it a day? I'm still toying with ideas. Please keep helping me with suggestions. Thanks for any help

ztsmith86 · 04-12-2012, 11:43 PM

Success! I made the repair tonight with a Heli-Coil Kit. I returned the threads and set and finished the Harmonic Balancer!! I will be finishing my install Saturday! I'm so excited

toml_pa · 04-13-2012, 04:12 AM

Congrats! How much trouble was drilling and tapping the new hole straight?

ztsmith86 · 04-13-2012, 01:40 PM

It wasn't too bad actually. I just went really slow after I drilled out the old threads. I would tap a turn back off, then clean out the fresh thread & just repeated that process for an hour. I would say it took me about 1 1/2 hr to make the repair and install the harmonic balancer. I'm very happy about all of this and I will be finishing the cams/ported heads install tonight/tomorrow!

midnightz/28 · 04-13-2012, 02:19 PM

BLACK10 · 04-13-2012, 10:13 PM

Did you use locktite? I went and looked at a bunch of old Ls3 crank bolts we have and it looks like only the first 1" of the threads of the bolt are used.

Im glad you got it fixed, just keep checking it for a few weeks

v6sonoma · 04-13-2012, 11:02 PM

Well that's good. I know I'd be

if I did that. Glad the repair wasn't to horrible.

ztsmith86 · 04-14-2012, 06:27 AM

I loctite the bejesus out of it

litle88 · 04-14-2012, 10:00 AM

FYI for future folks doing cam swaps or pulley swaps please get a longer bolt to seat your crank then once it's seated good take the long bolt out put your old bolt in and torque it down to spec. Then take that one out and install your new bolt on and torque that to spec.

Op congrats and good luck finishing up your build.

black79ta · 04-14-2012, 10:23 AM

I'm impressed. Good work...now finish it off and post videos...

ITGuy11 · 04-14-2012, 11:31 AM

Glad you were able to make the repair!

04-09-2012, 07:58 PM	#44
grocerygetter instigator Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010 Location: 72034 Posts: 3,979 View My Garage	yeah...no pounding. lol all the blower kits come with a guide and pin kit. You can make your own pin easily. You just need the guide. __________________ -John S.

04-12-2012, 11:43 PM	#46
ztsmith86 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2011 Location: Ames, IA Posts: 331 View My Garage	Success! I made the repair tonight with a Heli-Coil Kit. I returned the threads and set and finished the Harmonic Balancer!! I will be finishing my install Saturday! I'm so excited __________________ 2010 Camaro 2SS/RS LS3 Inferno Metallic ---------------------- TSP 1 7/8" Long Tube Headers 304 SS MagnaFlow 2.5 Street Series Catback Exhaust K&N Cold Air Intake Comp Cams Camshaft227/235 .639"/.646"114LSA+2.5 REV 2.165 Hollow Stem Stainless Steel Valves Manley1.59 Stainless Steel Exhaust Valves GM LS7 Hydraulic Lifter Kit Katech CR-5 Timing Chain Manley Hardened Pushrods Comp Cams LSX Rocker Arm Trunion Kit A.I.R. Ported Cylinder Heads Catalytic Converter Delete

04-13-2012, 01:40 PM	#48
ztsmith86 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2011 Location: Ames, IA Posts: 331 View My Garage	It wasn't too bad actually. I just went really slow after I drilled out the old threads. I would tap a turn back off, then clean out the fresh thread & just repeated that process for an hour. I would say it took me about 1 1/2 hr to make the repair and install the harmonic balancer. I'm very happy about all of this and I will be finishing the cams/ported heads install tonight/tomorrow! __________________ 2010 Camaro 2SS/RS LS3 Inferno Metallic ---------------------- TSP 1 7/8" Long Tube Headers 304 SS MagnaFlow 2.5 Street Series Catback Exhaust K&N Cold Air Intake Comp Cams Camshaft227/235 .639"/.646"114LSA+2.5 REV 2.165 Hollow Stem Stainless Steel Valves Manley1.59 Stainless Steel Exhaust Valves GM LS7 Hydraulic Lifter Kit Katech CR-5 Timing Chain Manley Hardened Pushrods Comp Cams LSX Rocker Arm Trunion Kit A.I.R. Ported Cylinder Heads Catalytic Converter Delete

04-13-2012, 11:02 PM	#51
v6sonoma Drives: 2010 SS RS Join Date: Jun 2009 Location: Providence, RI Posts: 8,108 View My Garage	Well that's good. I know I'd be if I did that. Glad the repair wasn't to horrible. __________________ Mods: BBK Intake, BBK LT's and High Flow Cats, Corsa Cat-back exhaust, Hurst short throw shifter, SLP skip-shift eliminator. 7/1/09 Placed order for IOM/IO int/ SS/RS 6M 9/26/09 Took delivery!

04-14-2012, 06:27 AM	#52
ztsmith86 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2011 Location: Ames, IA Posts: 331 View My Garage	I loctite the bejesus out of it __________________ 2010 Camaro 2SS/RS LS3 Inferno Metallic ---------------------- TSP 1 7/8" Long Tube Headers 304 SS MagnaFlow 2.5 Street Series Catback Exhaust K&N Cold Air Intake Comp Cams Camshaft227/235 .639"/.646"114LSA+2.5 REV 2.165 Hollow Stem Stainless Steel Valves Manley1.59 Stainless Steel Exhaust Valves GM LS7 Hydraulic Lifter Kit Katech CR-5 Timing Chain Manley Hardened Pushrods Comp Cams LSX Rocker Arm Trunion Kit A.I.R. Ported Cylinder Heads Catalytic Converter Delete

04-13-2012, 04:12 AM	#47
toml_pa ʇuɐıʌǝp lɐıɔos Drives: 2011 2SS/RS LS3/M6 Join Date: Feb 2011 Location: Pennsylvania Posts: 231	Congrats! How much trouble was drilling and tapping the new hole straight?

04-13-2012, 02:19 PM	#49
midnightz/28 Account Suspended Drives: 2010 2SS/RS, 1981 Z/28, Join Date: Jan 2011 Location: street near you! Posts: 137 View My Garage

04-13-2012, 10:13 PM	#50
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	Did you use locktite? I went and looked at a bunch of old Ls3 crank bolts we have and it looks like only the first 1" of the threads of the bolt are used. Im glad you got it fixed, just keep checking it for a few weeks

04-14-2012, 10:00 AM	#53
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	FYI for future folks doing cam swaps or pulley swaps please get a longer bolt to seat your crank then once it's seated good take the long bolt out put your old bolt in and torque it down to spec. Then take that one out and install your new bolt on and torque that to spec. Op congrats and good luck finishing up your build. __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

04-14-2012, 10:23 AM	#54
black79ta Drives: 79 transam with 582cid dart motor Join Date: Jun 2010 Location: missouri Posts: 529 View My Garage	I'm impressed. Good work...now finish it off and post videos... __________________ 2010 Camaro (inferno orange, 2SS, RS and such) cat backs, catch can, CAI on the way 79 Transam, 582 cid dart motor 779hp 315's out back 40spline gdaxles tko tranny

04-14-2012, 11:31 AM	#55
ITGuy11 Burning up tires Drives: 2023 ZL1 Vert Join Date: Jul 2010 Location: Macomb Twp, MI Posts: 717	Glad you were able to make the repair!

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