Key the crank kit?
Melting Slicks
Joined: Jan 2002
Posts: 2,049
Likes: 1
From: kansas city MO
Re: Key the crank kit? (aces)
Le Mans Master
Joined: Apr 2000
Posts: 7,248
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Re: Key the crank kit? (boblackhardtop)
I've been looking at their kit and talking to them also.
My open questions are:
1) Should I or can I use both of the 2 pins that come in the kit?
2) I don't want to buy this company's (different from ATI SC) $400-500 damper. How can I do this with my Stock Damper? How do I key the stock damper exactly? Do I have a pin hole drilled? A keyway cut? What is the correct procedure for modifying the stock damper??
If anyone knows, I appreciate!
I plan on calling ATI Perf's engineering dept early this week to find out.
My open questions are:
1) Should I or can I use both of the 2 pins that come in the kit?
2) I don't want to buy this company's (different from ATI SC) $400-500 damper. How can I do this with my Stock Damper? How do I key the stock damper exactly? Do I have a pin hole drilled? A keyway cut? What is the correct procedure for modifying the stock damper??
If anyone knows, I appreciate!
I plan on calling ATI Perf's engineering dept early this week to find out.
Melting Slicks
Joined: Jan 2002
Posts: 2,049
Likes: 1
From: kansas city MO
Re: Key the crank kit? (MelloYellow)
I'm using stock damper. As you know the kit is just a steel jig that go over the
crank to facilitate drilling into it. You then have to cut a groove into the stock damper to go over the pin. I believe the shop that did mine use only one pin.
crank to facilitate drilling into it. You then have to cut a groove into the stock damper to go over the pin. I believe the shop that did mine use only one pin.
Le Mans Master
Joined: Apr 2000
Posts: 7,248
Likes: 0
Re: Key the crank kit? (boblackhardtop)
K.
So, the crank only gets 1 or 2 holes & 1 or 2 pins.
The stock damper gets a keyway cut all the way across?
What depth and width did you use for the keyway?
I believe the pins are 3/16" diam.
How deep were the pin holes on the crank?
Do you have the instructions that came with the kit?
Just want to make sure before everything arrives.
Your mechanic did the keyway, but wasn't an engine machine shop, eh?
I don't know everything about dampers and I just don't want to throw the balance off.
Thx!
So, the crank only gets 1 or 2 holes & 1 or 2 pins.
The stock damper gets a keyway cut all the way across?
What depth and width did you use for the keyway?
I believe the pins are 3/16" diam.
How deep were the pin holes on the crank?
Do you have the instructions that came with the kit?
Just want to make sure before everything arrives.
Your mechanic did the keyway, but wasn't an engine machine shop, eh?
I don't know everything about dampers and I just don't want to throw the balance off.
Thx!
Melting Slicks
Joined: Jan 2002
Posts: 2,049
Likes: 1
From: kansas city MO
Re: Key the crank kit? (aces)
Let me try & explain this a little better. You drill a hole in your crank w/ the jig provided & insert the pin. The location & height of the pin will determine how big & where the groove is cut on the inside rim of the damper. It is a precision job. They took mine out to a machine shop to have it done. The damper will then just slide snuggly over the pin.
As far as making the jig itself, it's not that simple. It got to fit onto the snout of the crank a certain way, there are many cut on the outside rim of the ATI unit angled differently allowing you to do that.
The job itself is a bit involved too. You have to drop the steering rack off to gain access to do the work. I got charged $240 for the job, the shop that did mine did not charge me for the ATI kit, 'cause they're keeping it. Best bet is to borrow it from someone & pay a fee for it if you want to do it yourself, otherwise you would not save much. But if you're installing the whole ATI SC unit yourself also then it's more convenient to do the keying at the same time I guess.
HOPE THAT HELPS GUYS...
As far as making the jig itself, it's not that simple. It got to fit onto the snout of the crank a certain way, there are many cut on the outside rim of the ATI unit angled differently allowing you to do that.
The job itself is a bit involved too. You have to drop the steering rack off to gain access to do the work. I got charged $240 for the job, the shop that did mine did not charge me for the ATI kit, 'cause they're keeping it. Best bet is to borrow it from someone & pay a fee for it if you want to do it yourself, otherwise you would not save much. But if you're installing the whole ATI SC unit yourself also then it's more convenient to do the keying at the same time I guess.
HOPE THAT HELPS GUYS...
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Joined: Nov 2001
Posts: 88
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From: Grant FL
Re: Key the crank kit? (aces)
I can make the jig myself.
What do you think about threading the hole and using a hex set screw? What size would be best?
What do you think about threading the hole and using a hex set screw? What size would be best?
Dave
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Burning Brakes
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From: Beebe AR
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Re: Key the crank kit? (Dave2)
Dave2, Was there any trouble drilling into the crank and damper at the same time -- are both metals about the same strength. I really appreciate you posting the pictures. :D
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From: Grant FL
Re: Key the crank kit? (Mad_Dog)
Dave2, Was there any trouble drilling into the crank and damper at the same time -- are both metals about the same strength. I really appreciate you posting the pictures. :D
Dave
Le Mans Master
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Re: Key the crank kit? (Dave2)
Looking at the pics.. so the drill bit goes into both the crank & damper at the same time making the pin hole? The picture helps...
Does the ATI Perf kit work the same way? Do all work this way? Pinned from the side into both, not top to bottom?
Does the ATI Perf kit work the same way? Do all work this way? Pinned from the side into both, not top to bottom?
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Joined: Nov 2001
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From: Grant FL
Re: Key the crank kit? (MelloYellow)
Looking at the pics.. so the drill bit goes into both the crank & damper at the same time making the pin hole? The picture helps...
Yes hole is drilled in both at same time.
Does the ATI Perf kit work the same way? Do all work this way? Pinned from the side into both, not top to bottom?
Yes hole is drilled in both at same time.
Does the ATI Perf kit work the same way? Do all work this way? Pinned from the side into both, not top to bottom?
Le Mans Master
Joined: Apr 2000
Posts: 7,248
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Re: Key the crank kit? (Dave2)
The above pics look like a single drill slice went into the side of the snout and the damper at the same time from the side, not top to bottom.
Gonna call the ATI Perf engineers tomorrow...
[Modified by MelloYellow, 9:17 PM 3/27/2002]
Gonna call the ATI Perf engineers tomorrow...
[Modified by MelloYellow, 9:17 PM 3/27/2002]
Le Mans Master
Joined: Apr 2000
Posts: 7,248
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Re: Key the crank kit? (Mad_Dog)
Ok.. talked to ATI Perf...
//===
The above being the damper on the crank snout, the pins go vertical up and then 180* down for the optional 2nd.
The pins are 3/16" wide. You cut a keyway across the ENTIRE interior of the stock damper so that it slides all the way across the raised pin stuck in the crank snout. The pins are .093" above the crank snout when inserted. Not sure how tall they want the keyway, but it'll need to be at least .093".
I don't see any reason why a 2nd pin would be any more difficult to do, so you might as well. You take your stock damper to a machine shop and have them create 2 identical 3/16" wide keyways 180* opposite each other. They don't need to know anything else, so don't even tell them what you are doing.
I think ATI Performance will keyway your stock damper, but am not sure what they charge. Will confirm. Not 100% sure what height for the keyway is best.
//===
The above being the damper on the crank snout, the pins go vertical up and then 180* down for the optional 2nd.
The pins are 3/16" wide. You cut a keyway across the ENTIRE interior of the stock damper so that it slides all the way across the raised pin stuck in the crank snout. The pins are .093" above the crank snout when inserted. Not sure how tall they want the keyway, but it'll need to be at least .093".
I don't see any reason why a 2nd pin would be any more difficult to do, so you might as well. You take your stock damper to a machine shop and have them create 2 identical 3/16" wide keyways 180* opposite each other. They don't need to know anything else, so don't even tell them what you are doing.
I think ATI Performance will keyway your stock damper, but am not sure what they charge. Will confirm. Not 100% sure what height for the keyway is best.
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From: Grant FL
Re: Key the crank kit? (aces)
I like Daves2 solution. Can anybody see any potential problems with this?
Dave
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From: Grant FL
Re: Key the crank kit? (MelloYellow)
[QUOTE]Jeezus I find this BS confusing. Anyone have a picture?
The above pics look like a single drill slice went into the side of the snout and the damper at the same time from the side, not top to bottom.
Yes the hole is drilled in crank and damper at same time from front to rear. Round keyway instead of square.
Dave
The above pics look like a single drill slice went into the side of the snout and the damper at the same time from the side, not top to bottom.
Yes the hole is drilled in crank and damper at same time from front to rear. Round keyway instead of square.
Dave