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Newbie Forum: Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. Probationary Members must limit their tech posts to this forum and sub-forums.

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Old 10-17-2009, 05:14 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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Question

Removing the bolt that holds the crankshaft sprocket


So i recently bought a gates racing kevlar timing belt/balance shaft belt and i cannot get the bolt/nut off the end of the crankshaft sprocket. i tried wedging a breaker bar on the bolt/nut and letting the starter turn over thus loosening the bolt. Well that didnt work. Also tried putting two longer bolts in the crank pulley bolt holes and holding them with a wrench in a wedging effect but it just bent the bolts. i read somewhere that you use a spanner wrench to hold the sprocket while you loosen the nut but i dont know what size spanner wrench or where to get one. Also if anyone else has any tips on how i can remove that bolt itd be really helpful.
Thanks


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Old 10-17-2009, 05:20 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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Crankshaft sprocket tool

That always works for me. Get it stuck on something in the engine bay then hit the bolt with a breaker bar. You can buy one, follow the template, or just use the crank damper as a template.

How did the starter not work? I like to use an extra long pipe on the end of the breaker bar and get it stuck on the ground.


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Old 10-17-2009, 05:39 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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i had the half inch breaker bar wedged under the lower support beam that the front motor mount is on and for some reason my ignition is not sending signal to the solenoid on my starter so i have the power and ground of the starter harness hooked to a jump box and a jump wire from the positive of the jump box to the prong in the harness that would normally be plugged in on the firewall that goes to the solenoid on the starter. So i jump the starter and it just cuts out when the torque from the bolt meets the resistance of the wedged breaker bar. Could it be because i am trying to take the bolt off with the square 1/2 in drive part of the bolt instead of having the socket around the outside of the bolt? I'll have to make that tool tomorrow and try it again

Last edited by cincinnati4g; 10-17-2009 at 05:52 PM. Reason: grammer

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Old 10-17-2009, 06:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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I assume that you don't have an impact gun to use...

You can take off the flywheel inspection plate and wedge something between the teeth of the FW and the Trans case. Like a large screwdriver, pry bar, pickle fork, etc...

Be careful not to crack the case. I haven't had to do this on a DSM, but I did it for many years working on cars when I didn't have air tools.
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Old 10-17-2009, 07:00 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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Impact Gun is the safest, quickest method to use. For what you'd pay for one of those crank sprocket tools you could practically buy a Harbor Freight impact gun. No access to air? They make them in electric, too.

My Snap On air impact has NEVER let me down on crank sprocket bolts.


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Old 10-17-2009, 07:41 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Just picked up an electric impact from my friend. Ill test it out tomorrow and let you guys know

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Old 10-17-2009, 08:17 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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i used an impact and a harmonic balancer puller and put the bolts in the tool at opposite sides and used a bolt about 3 inches long to press on so that it would pry itself off. It worked really well and took about 3 seconds
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Old 10-17-2009, 08:23 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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in all honesty, while you have it tore down that far, i would just go ahead and do a balance shaft delete. Im in the process of doing one myself. Less likely for belt failure or bearing failure later on
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Old 10-17-2009, 08:51 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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isnt there a chance that you can break your front case and all that fun stuff trying to get the bearings in and out? also i thought you couldnt do it with the motor in the car? doin the delete makes me nervous haha

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Old 10-17-2009, 08:57 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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well that front case comes off. Once you have it off you will see what i mean. You can do it with the motor in the car but its alot easier to do with it in the car. If you did it with the 4g in the car you would have to do it from the bottom with the oil pan off. its alot easier than most people let on, just be calm and pay attention to the lengths for the bolts in the front case and you will be fine. Make sure you prime the oil pump when you put the case back on for initial start-up
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Old 10-17-2009, 08:58 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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i mean easier to do it with the motor out of the car haha
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Old 10-18-2009, 01:58 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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Just got the bolt off. electric impact couldnt get it so i wedged a screw driver in the flywheel and broke it loose with a breaker bar

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Old 10-18-2009, 02:02 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #13 (permalink)
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good good. glad to hear. what r u working on doing now?
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Old 10-18-2009, 03:06 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #14 (permalink)
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Quote:
Originally Posted by jusmx141 View Post
Impact Gun is the safest, quickest method to use. For what you'd pay for one of those crank sprocket tools you could practically buy a Harbor Freight impact gun. No access to air? They make them in electric, too.

My Snap On air impact has NEVER let me down on crank sprocket bolts.
Air impact = around 100 bux.
This tool... = 20 bux?
Not to mention the tool will help properly torque down the crankshaft center bolt.

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Old 10-18-2009, 03:27 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #15 (permalink)
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I use an impact. Always works easy

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Old 10-18-2009, 03:33 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #16 (permalink)
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ive been through this whole balance shaft thing on 2 different 6 bolt blocks and impact and the harmonic balance puller works easiest with no issues
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Old 10-18-2009, 05:58 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #17 (permalink)
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Quote:
Originally Posted by Morpherex View Post
Air impact = around 100 bux.
This tool... = 20 bux?
REALLY?

1/2" Compact Air Impact Wrench, $29.99


It may not be the best, but it'll get the job done.


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Old 10-18-2009, 08:03 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #18 (permalink)
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I made a tool to bolt onto the crank sprocket. It has a three foot handle, and makes removing and properly torqueing the bolt a breeze. I never felt right about impacting my crank, or twisting it by wedjing something in the flywheel. As for that business about using the starter...
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Old 10-19-2009, 01:19 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #19 (permalink)
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Quote:
Originally Posted by 16G1G4G63Talon View Post
good good. glad to hear. what r u working on doing now?
Just workin on gettin her runnin again. i bought this "clean" shell that supposedly only needed motor and trans and ecu. well the interior was shot and the wiring completely hacked. thats what i get for takin someones word. but i had a 90 gsx that i totaled that i am using as a parts car and literally everything has been switched over. my avatar is my old gsx that i wrecked in the front end and put a 1gb front end on but never got around to gettin it painted

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Old 10-19-2009, 01:28 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #20 (permalink)
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well i bought my 90 tsi off of a lot and the guy said that the only thing that was wrong with it was the turbo (the car smoked). so i took his word for it and bought the car for 500. i got to drive the car for maybe 15 minutes before the timing belt snapped on me and bent 6 valves. now im doin the balance shaft delete and just realized that my oil pump is screwed and the bearing that the shaft used to sit on is now gone. the oil pump shaft is soo screwed up that it made an indention about 1/2 of an inch all the way around the shaft before it spun the bearing. im a victim of crankwalk, bent valves, heartache, and bein broke after all this crap ive had to put on or in this engine. but at least im doin it right and i am supporting a new big 16g and new o2 housing
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