Pinning the Crank... Drill Bit?
05-03-2008, 02:09 PM
#1
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Pinning the Crank... Drill Bit? I have a fordged crank and the drill bit supplied with the ATI pinning kit isn't making a dent. I went to home depot and got a titanium bit and no luck with that either.
Anyone have a suggestion on what bit to use and where I can get one? I can't move on to finish the install of the ProCharger until I pin the crank.
HELP
Anyone have a suggestion on what bit to use and where I can get one? I can't move on to finish the install of the ProCharger until I pin the crank.
HELP
05-03-2008, 04:22 PM
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05-03-2008, 04:36 PM
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A carbide bit on some sort should get results. You're going to need a lot of carbon for the hardness you're going to need to punch through. I'm not sure on Ti's hardness to punch through your forged crank. You might want to ask someone up at Home Depot for some further advice on what would be best for drilling through your material.
Also, have you used a little punch to help the bit keep centered? There might be some other method, or a different bit to get the hole started, then the other drill bits might work after that.
If all else fails, call up a machinist. Odds are they can do it for you, or they'll have the insight to help you find what you need.
Edit: Instead of calling up the blower's manufacturer for a drill bit, call up the crank's manufacturer to see what they recommend.
Also, have you used a little punch to help the bit keep centered? There might be some other method, or a different bit to get the hole started, then the other drill bits might work after that.
If all else fails, call up a machinist. Odds are they can do it for you, or they'll have the insight to help you find what you need.
Edit: Instead of calling up the blower's manufacturer for a drill bit, call up the crank's manufacturer to see what they recommend.
05-03-2008, 05:31 PM
#5
There is no such thing as a Ti drill bit, it is a Ti N coating and marketing. (the coating is what gives it the gold color)
Your problem is getting through the outer hardened layer of the crank, you will need either a M42 cobalt, or pure carbide bit. Carbide is harder than the hubs of hell, but also brittle. you have to be carfull or it will just shatter. You can also try grinding through the hardened outer shell where you want to drill.
Your problem is getting through the outer hardened layer of the crank, you will need either a M42 cobalt, or pure carbide bit. Carbide is harder than the hubs of hell, but also brittle. you have to be carfull or it will just shatter. You can also try grinding through the hardened outer shell where you want to drill.
05-03-2008, 06:18 PM
#6
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I used a solid cobalt drill bit, made by Sandvik. A friend sourced it for me from his work.
I could not believe how easy it drilled the hole !!!!! I tried several HSS bits, and they barely even marked the crank.
I could not believe how easy it drilled the hole !!!!! I tried several HSS bits, and they barely even marked the crank.
05-03-2008, 11:45 PM
#7
I've heard of how fun this can be, a buddy of mine had to do this too. Not sure what bit he used but I could probably ask him. I agree with asking a machinist for some help too, they have done wonderous work for me in the past. I needed one today ironically but no shops open
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05-04-2008, 03:21 AM
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05-04-2008, 01:09 PM
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