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New Crankshaft keyway loos fit


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Hey guys, just starting to button up my ej22 for my swap, and I had to get a new keyway for it because the other one striped out.

 

Okay I'll slide the timming sprocket on, then put the keyway in and it seems to be a loose fit, a little wiggley. So do I tack weld it in there or something or is it fine like that?

 

Thanks.

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this is not an unusual problem. if the crank bolt is not torqued to spec it can loosen and wallow out the slot in the crank, or the sprocket. if the sprocket is damaged you should replace it. (this assumes you bought the correct key.)

 

but you can put it back together in spite of a wallowed key way and it can be good. you just need to set it up right and torque it correctly. the bolt does all the holding, or is supposed to. the key is mostly just to locate it correctly . some one has put one together with out a key, just the bolt. and it ran fine. the direction of rotation and wear is the opposite of the direction of tightening the bolt. so when you are putting it together, the sprocket does not usually move away from the correct timing position.

 

lots of info on this, search is your friend.

Edited by johnceggleston
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The keyway is a bit of a loose fit. I don't think it should wiggle though. Where did you get the new one?

 

I got the key from an online Subaru dealer. It's the right one it fits perfect in the timming sprocket, and I emaild them to make sure.

Edited by Prwa101
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this is not an unusual problem. if the crank bolt is not torqued to spec it can loosen and wallow out the slot in the crank, or the sprocket. if the sprocket is damaged you should replace it. (this assumes you bought the correct key.)

 

but you can put it back together in spite of a wallowed key way and it can be good. you just need to set it up right and torque it correctly. the bolt does all the holding, or is supposed to. the key is mostly just to locate it correctly . some one has put one together with out a key, just the bolt. and it ran fine. the direction of rotation and wear is the opposite of the direction of tightening the bolt. so when you are putting it together, the sprocket does not usually move away from the correct timing position.

 

lots of info on this, search is your friend.

 

The timming sprocket is in good shape, nothing messed up on it, I had to get a new pully and bolt. Because those were striped out.

 

And ya I've read the same thing about people who ran it without it, Im just double checking, better to be safe than sorry on the road.

 

In thinking the crank key hole is prolly a little wore, and so that's why it's a loose fit... The sprocket moves about an 1/8" on both left and right.

Ill see if I can glue on a peice of scrap to make it fit a little tighter in the crank.

And if that dosnt work I'll just bolt it up with the marks lined up.

 

Thanks for the double checkin!

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