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05-23-2013 | #1 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,798
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Removing Cam Cover Bolts the Hard Way
Removing Cam Covers for Camshaft Timing Inspection, replacement of PCV filters, checking top Timing Chain Guide for wear
Removing Torx 40 bolts Not so easy......but then turned out very easy. 1. Cam Covers were removed by first removing Bolts from C-Frame, Loosening Engine Mount Bolts and then dropping Transmission a bit so cam covers could clear Brake Booster (two Torx-40 bolts near brake booster were removed with cam cover). On the Passenger side the Temperature sensor for Evaporator was removed easily and set aside (plenty room to then remove cam cover bolts and then cam cover on passenger side). The Transmission was lowered to remove Torx-40s on passenger side and then raised to remove Cam Cover on passenger side clearing Fire Wall bolts. 2. Now the Hard Part......as can be seen five Torx-40 Cam Cover Bolts failed in the Torx receiver on the bolt head even though considerable downward pressure was applied to the Torx-40 socket/wrench. Several types of Torx 40s wrenches had to be used because of the clearance. Considerably more torque than the 19 ft-lbs for Torx-40 Cam Cover bolt installation was applied trying to remove them (a cheater on a 1/2 inch socket wrench) 3. Now the Easy Part........What to do.....Drill, Heat....Torch... a. I tried drilling and ruined three drill bits. b. I did not want to try heat (A little heat works great on Injector Housing for removal of Coolant Manifold Bolts) as there is no way to get heat where it is needed. c. Chisel...........well wouldn't you know it.....Using a chisel to first notch one side of the bolt and then pounding that side counter clockwise with the chisels about 10 times without touching the Aluminum Cam Cover surface popped the bolt loose (all five). I would never have guessed it but ran out of options as I was just going to use a chisel to knock the Torx-40 bolt heads off (a poor concept in itself) Removing Cam Cover and Camshaft Timing Inspection
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-24-2013 at 07:06 AM. |
05-23-2013 | #2 |
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Removing Cam Cover Bolts the Hard Way
Stainless upgrade time
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
05-23-2013 | #3 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,798
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Re: Removing Cam Cover Bolts the Hard Way
Yes.....have the SS ready
And painting cam covers also vice powder coat |
05-23-2013 | #4 | |
Join Date: May 2010
Location: Japan
Posts: 3,588
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Re: Removing Cam Cover Bolts the Hard Way
Quote:
Sorry for the dumb question, but any particular reason painting over PC? Just curious and trying to learn something. Thanks, Craig
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Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048 |
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05-23-2013 | #5 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,798
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Re: Removing Cam Cover Bolts the Hard Way
This my 90'.....my 91' is full PCed.
I want this up and running this next week and I figured I can always PC later. Actually just experimenting with Rustoleum Silver (high temp) Plenum looks great with red letters. Will post photo tomorrow. SW complete offroad exhaust and SS intake Air box also here next week (George Braml) Since I have C Frame disconnected also installing ZFdoc C Frame plates. Keeping secondaries so I can say I know how to maintain them on this 90' And New Water pump and Randy's aluminum pulleys. Did the usual differental drain install and the usual TB coolant elimination to make those Plenum pulls a 30 minute job Also experimental Belt Tensioner Pulley. Already have nice new aluminum radiator it turns out I did not know about when I got this 90'
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-24-2013 at 01:00 AM. |
05-23-2013 | #6 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Removing Cam Cover Bolts the Hard Way
Wow I zoomed through them with a drill bit when I did it
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
05-23-2013 | #7 |
Join Date: Oct 2004
Posts: 1,890
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Re: Removing Cam Cover Bolts the Hard Way
This is the ideal device for loosening a "stubborn" anything and is very controlable. Used one this afternoon to remove door hardware on a '58.
There's a 1/2" also. Here's a SnapOn link: http://buy1.snapon.com/catalog/print...JPG&email=true |
05-23-2013 | #8 |
Join Date: Dec 2012
Location: NC
Posts: 1,786
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Re: Removing Cam Cover Bolts the Hard Way
Did the assembly teams put them in dry?
Just seems that the best hardware, assembled dry, ain't the best, IMO... When I pull ANY bolt / screw, it goes back STERILE, in a STERILE hole (with clean grease).
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I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] Last edited by Schrade; 05-24-2013 at 02:43 AM. |
05-23-2013 | #9 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,798
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Re: Removing Cam Cover Bolts the Hard Way
I removed these cam cover bolts with engine installed so you all know the limits of space. A chisel could reach most of the bolts at
the angle required to punch them counterclockwise. I was amazed how well the chisel worked especially in tight places like the lower row of Torx-40 bolts on passenger side.
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 05-24-2013 at 01:01 AM. |
05-23-2013 | #10 |
Join Date: Oct 2004
Posts: 1,890
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Re: Removing Cam Cover Bolts the Hard Way
The air hammer socket adapter destroys "nothing" better than probably 95% of the time and this '58 will go back together using the OE original hardware. There's no "oh sh!t it slipped" damage either.
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