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Rounded cam tower allen bolt
Taking the cam tower off today, all the port cover bolts and cam tower bolts came off relatively easy - except one, that was already rounded-out. I put the allen socket in and it just turns. No idea how it happened or what to do about it. Ideas?
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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03-30-2008, 09:59 AM
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Will work for parts
Join Date: Oct 2002
Location: Silicon Valley
Posts: 893
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A really big easy-out. Hammer it in and twist the plug out, then buy a new plug.
 that and hope the bolts way down in the cam tower aren't stripped. Those are a bit harder, same procedure though. -greg
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'88 944 240,100 miles -race car '05 Boxster 110,000 - Daily Driver '74 911 Targa - long term project |
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03-30-2008, 10:15 AM
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Use an SAE allen wrench in it...can't remember the size but just bigger than the metric one. You may have to drive it in with a hammer but then it will come out. CJ, I'm unclear whether you said it was one of the cover plugs or one of the bolts holding the cam tower on. If it is one of the bolts holding the cam tower itself on, then put the bolts back in around the stripped one and tighten them back up. That will take the pressure off the bad bolt and help you loosen it. If it's just one of the plugs, then of course none of that applies.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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03-30-2008, 09:18 PM
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Join Date: Oct 2005
Location: CT
Posts: 406
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A few years back i bought a set of stripped bolt remover sockets. They have swirling teeth inside. I used them to remove a few stripped allen bolts on a 928 door yesterday. Even with a perfectly round ouside like allen bolts they still bite in. What part of CT are you in?
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02 996TT Stick Modded AKA Tubsey 08 Cayman S 6spd 49k Black/Terra-cotta 04 Gallardo Gated 6spd 19k Arctic Grigo/Nero Blue 14 BMW M5 6spd Stick 06 Cayenne S 🌝 miles 1982 928 S 5spd :-) |
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03-30-2008, 09:48 PM
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meister member
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Like razor said make sure to reinstall the other cam tower bolts so as to take the tension off of the bad one regardless of how you decide to remove it.
Good luck, Speedy
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1983 944 guards red with 16" Fuchs, Host of Wisconsin area timing/ balance shaft belt tensioning party 1987 944S Purchased from Legion. Corvette LT-1 V-8 conversion with Mega Squirt II Check on progress ---> www.porschehybrids.com/gallery/speedracing944 Favorite Road = www.tailofthedragon.com 318 turns in 11 miles (11 min 20 sec best run) |
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03-31-2008, 02:47 AM
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One trick that usually works is to strike the left half of the bolt head with a cold chisel until you cut a small slot in it. Then gradually increase the strike angle until it's about 45 degrees so the impact turns the bolt head counter-clockwise. However, if its one one of the bolts on the inside of the tower this probably won't work.
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Jeff 78 911SC, Silver/Black, H4's, Recaros, 964 Cams, Custom Exhaust, 16" 930 Fuchs. Lowered & Loud 
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03-31-2008, 04:51 AM
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It is one of the several (8?) cam tower bolts UNDERNEATH the cam tower, very accessable. Needless to say, I am hoping that none of the internal cam bolts are stripped (I have a long 6mm hex socket on the way)...
THanks for the tips, guys. I will put in the neighboring bolts, and try the SAE hex first. If that doesn't work, I have an easy-out on the way. If that doesn't work, maybe I'll try Euroshark's method (I'm in West Hartford, BTW).
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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03-31-2008, 06:03 AM
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Join Date: Oct 2005
Location: CT
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Good luck. Any porsche gatherings in CT? I'm only 40mins from west hartford.
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02 996TT Stick Modded AKA Tubsey 08 Cayman S 6spd 49k Black/Terra-cotta 04 Gallardo Gated 6spd 19k Arctic Grigo/Nero Blue 14 BMW M5 6spd Stick 06 Cayenne S 🌝 miles 1982 928 S 5spd :-) |
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03-31-2008, 08:24 AM
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I was considering having a little get-together at my place on what I hope will be the last day of reassembly. I would expect some time in late April.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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03-31-2008, 11:50 AM
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What timing, I just ran into this yesterday, one bolt inside the cam and one outside. Wasn't to difficult
-reinstall surrounding bolts as mentioned by Tom -I hammered in a Snap-On 10mm torx bit -apply steady pressure while turning came out no problem, good luck. Rob
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Rob 87 944 * 89 951 "When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car." |
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03-31-2008, 12:07 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
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Quote:
John_AZ 1988 924S + 1987 924S |
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04-01-2008, 05:32 AM
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Join Date: Feb 2008
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I would take a 6mm long hex and hammer it in. and if it doesn't bite. try a 7mm.
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04-01-2008, 08:32 AM
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Oddly enough, this happened to me last week too. The one holding the heater coolant tube was rounded off, all the others were fine.
I tried "waking them up" by tapping with a hammer. I sprayed with PBlaster and let it sit for a few days. I tried the "Bolt Out" tool as mentioned above by Euroshark. Seems to be a great tool but they did not have a size that would grip on the cam bolts. Damn. In a moment of desperation before I drilled/cut the head off, I grabbed a T40 torx bit and it worked perfectly. The bolts are not that tight and shouldn't have any thread lock on them. They crack as they break loose then they come right out. Here is my advice. DON'T USE CHEAP ALLEN WRENCHES. Check fitment before use. I have three different brands of allen wrenches and they all fit slightly different. Also avoid using the 6" allen wrench unless you have to(inside the tower). You will notice the shaft twist a lot when under torque rather than transfering it to the bolt. You can imagine the problem with this. You want the bolt turning, not the wrench shaft(stripped bolt)
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1986 951 Sold |
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04-02-2008, 04:44 PM
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2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
Blitz
1989 Porsche 951 2.5L
