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Crankshaft Pulley will NOT come off

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Old 03-14-2005, 06:30 AM
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i used to stock bolt to get the pulley started like you, then actually used a couple of old pushrods(bent the first one), but if you're really careful, the pushrod will work to push it off. Just be careful not to bend the sucker! My 3-jaw puller didn't have a long enough rod to bottom out on the crank, so improvision it was!


Keep the heating, and keep using a impact gun to work that sucker off. You've got it started, it's all downhill from the initial break loose

Last edited by tim99ws6; 03-14-2005 at 06:42 AM.
Old 03-14-2005, 10:07 AM
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Sounds like your using a different kind of puller than I used. The one I used had a center post. As you cranked it in, it pulled out the 3 jaw assembly, didnt secure around the bolt, so bolt length was never an issue. You have my useless empathy.
Old 03-14-2005, 10:12 AM
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Call hardware shops (let your fingers do the walking)
Here are the longer bolt specs:

Longer crankshaft pulley bolt, M16 x 2.0 pitch x 120mm long
Old 03-14-2005, 10:46 AM
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Don't feel like you're the only one right now. When I did my h/c install, I put the stock pulley back on there. Now I've got the front of the engine torn apart to put an underdrive on there. But I can't get the stock pulley off either, and I've only got 1000 miles since I did it the last time.

I've broken 2 pulley pullers thus far: I stripped the threads on the first one, and then broke the hook off of the 2nd one that was beefier than the first. So today I'm going to try heating it up with a torch to see how that goes.
Old 03-14-2005, 10:54 AM
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Napa has the bolts in several lenghts.
Old 03-14-2005, 11:49 AM
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Well i've been calling around all day and no one has the longer bolt. This is pretty ridiculous.
Old 03-14-2005, 12:08 PM
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Originally Posted by ArcticZ28
Well i've been calling around all day and no one has the longer bolt. This is pretty ridiculous.
NAPA is where I got mine from. Make sure that you pick up some washers that are the same diameter as the head on the stock bolt. They will be necessary to grab the inner lip of the pulley when seating it back on there.
Old 03-14-2005, 12:18 PM
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my car is a 98 with 99k miles on it when i took mine off...i used the bolt threaded in 3 turns and pulled it as far is it would go...i then took the bolt out and used a deep socket (big enough to go inside the pulley but NOT inside the crank) then i just started the puller into the socket (the drive end)...this got the pulley off in no time...took me awhile to figure this out though...if you think this is a pain wait till you put it back on...haha...i had to hammer it on untill i could thread the stock bolt back in 2-3 turns...i even put it in the oven for awhile to see if it would be able to slide on...heck no still needed a hammer...good luck
Old 03-14-2005, 01:29 PM
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I found 18" threaded rod and bought 3 nuts. Can use it for off and on.
Old 03-14-2005, 02:21 PM
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Use a little oil to expedite the uninstall and reinstall. Makes it slide a wholllllle lot easier.
Old 03-14-2005, 02:46 PM
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put the pulley in the oven on abouta 300 degrees for like 20 minutes before install, and ice down the crankshaft (for a little extra clearnace clarence )

i've heard they will slide all the way on w/out a bolt/nut to push them.
Old 03-14-2005, 05:17 PM
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"The bolt you need is a 16mm / 2.0 thread pitch and 120mm in length (the head of this bolt is 24mm). This bolt can be purchased from NAPA as P/N 2801-225. Price is $5.39. Also purchase 2 washers P/N 8071-035B. Two washers stacked works better than just one.

VERY IMPORTANT: Aditionally, if you don’t have a 24mm 6 point 1/2" drive socket; go buy one. DON’T use a 12 point socket. It does not grab enough meat on the bolt head, and may round off the head as you are trying to remove the ‘Super Tight’ crank bolt. If this happens; YOU WILL have more problems than you would ever want to deal with!!

Sears sells this socket in a deep-well version made for an impact wrench. This is the best one to get. The impact socket is much stronger than a regular socket and will not distort. "

-----------

Not sure of the author; I copied this from a post on 11-06-04
Old 03-14-2005, 05:29 PM
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you are trying to still remove it, correct? Can you go to a cummins tools or something a get a $30 claw puller? Mine has a long *** bolt as part of the tool. In fact, I had never even heard of people using the crank bolt with the puller. That is just crazy sounding to me. Mine has a pointed cap on the bolt end so it never even enters the crank threads. Seriously, $30
Old 03-14-2005, 05:31 PM
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15/16" is fine if it is a 6 point. 23.8mm
Old 03-14-2005, 05:32 PM
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"you are trying to still remove it, correct? Can you go to a cummins tools or something a get a $30 claw puller? Mine has a long *** bolt as part of the tool. In fact, I had never even heard of people using the crank bolt with the puller. That is just crazy sounding to me. Mine has a pointed cap on the bolt end so it never even enters the crank threads. Seriously, $30"

That's what I used, only rented from autozone. Came as a kit with the threaded rod and various caps.
Old 03-14-2005, 08:57 PM
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Hey I got my pulley off today. Heating it up with a torch worked for me. I hope you've had good luck as well!
Old 03-14-2005, 09:29 PM
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those napa parts are gold when you get to installing the balancer! good looking out Viper. when installing the balancer does anybody actually torque it or just give it everything with the air gun?
Old 03-14-2005, 10:14 PM
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Originally Posted by defiftyae
those napa parts are gold when you get to installing the balancer! good looking out Viper. when installing the balancer does anybody actually torque it or just give it everything with the air gun?
Trying not to get off topic, but don't use any air tools when installing the new bolt. Some people say it's OK to uninstall the bolt with one, though. Another tip is NOT to hammer on the pulley at all! I torqued mine down with a 2.5 foot torque wrench. Here's how I installed my new pulley tonight:

1 - Using a longer bolt with washers, seated the pulley as far as I could. Don't torque this down or you can break it off in the crank! Take the bolt out.

2 - Threaded in the old crank bolt. Torque to 240 ft/lbs. Take it out.

3 - Take a NEW crank bolt and put a healthy amount of red locktite on there. GM spec is 37ft/lbs then a full 120deg turn after that. The first time I did my pulley install I found it was about 250ft/lbs on this final pass so that's what I used tonight.

Disclaimer: I'm not an expert, I've read alot online though.
Old 03-14-2005, 11:31 PM
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Well, after a bit of genius engineering, i got the pulley off today. Due to the fact taht I called NAPA and they said the longer bolt would have to be special ordered (yes, a bolt, special ordered) I sawed the head off of my old crank bolt, cut an aircraft bolt of the same diameter to a length of about 2 inches, then welded the old head -> new aircraft bolt -> old threads, in that order. Now I have a much longer bolt with the same threads and it did the trick. Just ordered an underdrive pulley to play it safe and not use the old one b/c it is pretty F'ed up. Anyways, I'm FINALLY not stuck anymore. But, I don't have a good tool (to reach all springs including the back ones that are hard to get to) to get those damn valve springs compressed. What do you all suggest? Does pep boys or autozone have a good tool for these? I don't have time to order the More tool.
Old 03-15-2005, 10:17 AM
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Originally Posted by Derek98z
you are trying to still remove it, correct? Can you go to a cummins tools or something a get a $30 claw puller? Mine has a long *** bolt as part of the tool. In fact, I had never even heard of people using the crank bolt with the puller. That is just crazy sounding to me. Mine has a pointed cap on the bolt end so it never even enters the crank threads. Seriously, $30
Thats what I talkin about, works great.


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