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Help me get this bolt out!!! Crankshaft Sprocket/Spacer

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blackbyrd

15+ Year Contributor
718
23
Jul 9, 2006
Columbus, Ohio
I'm trying to get the "spacer" on my old crankshaft sprocket off.
I already broke the 22mm bolt free, but I need the spacer part to go into the new engine?
I've tried prying, beating, pb blasting, everything.. Any suggestions what to do?
BTW i'm doing a 1g7bolt to 6bolt swap.

Here's a pic of what I need on the old one, then what my new one looks like.
Thanks!
 

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Try heating up the crank gear around the washer with propane or map gas. Don't heat the washer, heat the gear.

If that doesn't work, I have an extra used one I can mail you (no charge) or you can pick up a new one at the dealership (part number MD377400, around $2.85 at a dealership offering a DSM discount). PM me your name and address, if you want the used one.

Mike
 
Thanks! I'm trying to get this done tonight, I'm almost ready to drop the engine back in my car.
Thanks for the part number though if i can't get it out!
Oh, and I heard not to heat it up, I mean both metals will expand equaly, even if heating the outside sprocket, which i would probably need to take the belt off so i dont get a face full of burnt rubber, it would transfer to the spacer? It doesnt look rusted or anything.
I'll try it if i got nothing else
 
blackbyrd said:
Oh, and I heard not to heat it up, I mean both metals will expand equaly, even if heating the outside sprocket, which i would probably need to take the belt off so i dont get a face full of burnt rubber, it would transfer to the spacer?

If you left the heat on long enough, it will eventually transfer equally to the spacer, however, not immediately. The sprocket will expand first, as long as you keep the heat on it and not the spacer. Go around the sprocket with the flame, near the spacer, for maybe 15-30 seconds. Hit the spacer with a hammer. If it doesn't pop off, try another 30 seconds, and so on. If, after a couple of minutes, the spacer won't come off, buy a new one. As far as the timing belt, it will probably get warm, but I don't think it will hurt it. Just be careful and don't hit the belt with the flame. If you are uncomfortable with it, take the timing belt off.

Mike
 
Hey, thanks for the advice! I ended up trying that method last night after i exhausted all other options, with no success. Oh and it definitely smoked my belt, along with all the oil gunk that everything on that block is covered in. Got lucky this morning though, the mitsu dealership had one in stock, 7.50$!
I've never come across a bolt i couldn't get off! I feel like a looser, I'll have to come back to this one when i'm not so rushed.
Thanks again!
 
blackbyrd said:
Hey, thanks for the advice! I ended up trying that method last night after i exhausted all other options, with no success. Oh and it definitely smoked my belt, along with all the oil gunk that everything on that block is covered in. Got lucky this morning though, the mitsu dealership had one in stock, 7.50$!
I've never come across a bolt i couldn't get off! I feel like a looser, I'll have to come back to this one when i'm not so rushed.
Thanks again!

Your welcome. I just wished the advice would have worked.

$7.50! List price for that part is $3.72. I know you were in a hurry, but don't go to that dealer again. I feel your pain. The Mitsubishi dealership near me does the same thing. They make up their own list price. I order all my Mitsubishi parts online from a dealer that gives 25-30% off the true list price. The trade-off is 2-3 days shipping time.

I'm not sure what your intentions are with the old motor, however, if you are still going to use it, just get another crank sprocket and spacer. If the spacer won't come off after heating to the point of smoking the timing belt, I don't think it will ever come off.

Mike
 
Just for future reference, slide the pulley off of the crank and then tap the spacer out from the rear. It requires removing the belt but if you heat it, the belt will be toast afterwards anyway.
 
What is the part number for the bolt so that I can replace it (6bolt)?

Just like everyone else, I had a #!$%ed up time trying to get the bolt free. I finally got the bolt off, but in the process i ruined it. The 1/2 breaker bar stress-cracked two corners of the bolt. Since the wall of the bolt head was cracked I had to use a socket after that. I found out that an impact socket works better for removing the bolt. I will never again use the 1/2" square inside of the bolt except for maybe advancing the engine.
 
MD377400 Thats the part number for the 6bolt. It's a "washer". And yeah, I did get it off by taking the whole sprocket off, very easily. But at the time I couldnt find my tensioner tool, and blah blah didnt want to take off the belt and leave it off.
Good luck!
 
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