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offset hole in crank pulley. #182774
01/03/09 06:03 PM
01/03/09 06:03 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline OP
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Mt. Vernon, Ohio
just got my new Moroso crank pulley so I can try and add an alternator, found that it had 1 offset hole but the ATI damper don't,they are all the same spacing, is it normal to have the offset hole redrilled and countersunk the .100 to get it all to line back up? I can have this done easy enough, but was wondering if some of you guy's have done this.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: offset hole in crank pulley. [Re: dartman366] #182775
01/03/09 06:14 PM
01/03/09 06:14 PM
Joined: Nov 2007
Posts: 21,843
Kirkland, Washington
Pacnorthcuda Offline
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Kirkland, Washington
you just have to elongate the offset hole a little bit. www.440source.com explains it all pretty well in their pulley section.

Re: offset hole in crank pulley. [Re: Pacnorthcuda] #182776
01/03/09 06:18 PM
01/03/09 06:18 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline OP
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dartman366  Offline OP
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Mt. Vernon, Ohio
I was just going to take it to a local friend's machine shop ant put it on his Bridgeport and do that, I just wanted to know if that is acceptable, sound's like it is.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: offset hole in crank pulley. [Re: dartman366] #182777
01/03/09 06:34 PM
01/03/09 06:34 PM
Joined: Sep 2005
Posts: 2,442
LOWELL IN
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QWK_ENUF Offline
top fuel
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LOWELL IN
my march pulley comes that way


WAXER
Re: offset hole in crank pulley. [Re: dartman366] #182778
01/03/09 07:47 PM
01/03/09 07:47 PM

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Quote:

just got my new Moroso crank pulley so I can try and add an alternator, found that it had 1 offset hole but the ATI damper don't,they are all the same spacing, is it normal to have the offset hole redrilled and countersunk the .100 to get it all to line back up? I can have this done easy enough, but was wondering if some of you guy's have done this.





Some Mopar aftermarket SFI balancers come with GM bolt pattern...I have a couple of them, looks like you have one too..I pretty sure I have a Moroso pulley for that..Just PM me if you need it... poppaj

4920821-00popprofile.jpg (44 downloads)
Re: offset hole in crank pulley. #182779
01/03/09 07:52 PM
01/03/09 07:52 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline OP
I Live Here
dartman366  Offline OP
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Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
Quote:

Quote:

just got my new Moroso crank pulley so I can try and add an alternator, found that it had 1 offset hole but the ATI damper don't,they are all the same spacing, is it normal to have the offset hole redrilled and countersunk the .100 to get it all to line back up? I can have this done easy enough, but was wondering if some of you guy's have done this.





Some Mopar aftermarket SFI balancers come with GM bolt pattern...I have a couple of them, looks like you have one too..I pretty sure I have a Moroso pulley for that..Just PM me if you need it... poppaj


Thank's for the offer Poppaj,I should be ok, I just wanted to know if it would be acceptable to slot the offset hole to make it fit, sound's like I can.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: offset hole in crank pulley. [Re: dartman366] #182780
01/03/09 07:53 PM
01/03/09 07:53 PM
Joined: Sep 2003
Posts: 6,847
Missouri
StrokerPost Offline
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Missouri
Bill, what I did was just not use the 6th bolt, but to avoid possibly throwing off the balance, I measured the height of the head on the bolt, then on the balancer side of the pulley I countersunk a hole the same depth on the bolt hole that is "off" and slid the bolt in from the back side. Its not doing anything, but at least I've kept the weight there. And no, it doesnt come loose.

Re: offset hole in crank pulley. [Re: StrokerPost] #182781
01/03/09 08:37 PM
01/03/09 08:37 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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MoparforLife Offline
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Upper Midwest
Mopar cranks after about 1971 had an offset bolt in the damper/pulley mounting.

Re: offset hole in crank pulley. [Re: MoparforLife] #182782
01/03/09 08:45 PM
01/03/09 08:45 PM
Joined: Aug 2003
Posts: 43,263
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Mopar cranks after about 1971 had an offset bolt in the damper/pulley mounting.


Actaully the offset hole in the dampeners and puleys where standard until around 1971, even pattern after that


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: offset hole in crank pulley. [Re: Cab_Burge] #182783
01/03/09 09:12 PM
01/03/09 09:12 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Eighty Four, PA
We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.

Re: offset hole in crank pulley. [Re: B G Racing] #182784
01/03/09 09:16 PM
01/03/09 09:16 PM
Joined: Jan 2003
Posts: 5,875
communist bloc of new jersey
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jamesc Offline
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Quote:

We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.




that's all i've ever done

Re: offset hole in crank pulley. [Re: B G Racing] #182785
01/03/09 09:16 PM
01/03/09 09:16 PM
Joined: Sep 2007
Posts: 2,584
sycamore,ohio
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sycamore,ohio
Quote:

We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.



me too !

Re: offset hole in crank pulley. [Re: BobsProFab] #182786
01/03/09 09:26 PM
01/03/09 09:26 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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Quote:

Quote:

We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.



me too !


That makes us we 3

Re: offset hole in crank pulley. [Re: B G Racing] #182787
01/03/09 09:50 PM
01/03/09 09:50 PM
Joined: Jan 2003
Posts: 8,030
The Grand State of Confusion-O...
SKR8PN Offline
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Quote:

Quote:

Quote:

We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.



me too !


That makes us we 3




Times 4!!!


Karma has no menu. You get served what you deserve.
Re: offset hole in crank pulley. [Re: SKR8PN] #182788
01/03/09 09:54 PM
01/03/09 09:54 PM
Joined: Aug 2003
Posts: 43,263
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Quote:

Quote:

Quote:

We just use 3 grade 8 allen socket head bolts to hold it on(similar to a chevy)forget the rest of the holes.



me too !


That makes us we 3




Times 4!!!


Not me, I use all of the holes, longate the pulley as needed Murphy hates me and already gets me to often without me giving him any more opportunitys(SP?) to make my junk fail Mopar designed it with six, GM design theres with three. Which ones failed the most?

Last edited by Cab_Burge; 01/03/09 09:58 PM.
Re: offset hole in crank pulley. [Re: SKR8PN] #182789
01/03/09 09:55 PM
01/03/09 09:55 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
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Mt.Vernon ,Ohio
ME 5..heck three of them don't hold it..You got more problems..

Re: offset hole in crank pulley. [Re: VernMotor] #182790
01/03/09 09:58 PM
01/03/09 09:58 PM
Joined: Jan 2003
Posts: 8,030
The Grand State of Confusion-O...
SKR8PN Offline
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Quote:

ME 5..heck three of them don't hold it..You got more problems..






My alternator mounts to the frame rail,so three is GODS PLENTY to hold a little pulley on the balancer......


Karma has no menu. You get served what you deserve.
Re: offset hole in crank pulley. [Re: SKR8PN] #182791
01/03/09 10:06 PM
01/03/09 10:06 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline OP
I Live Here
dartman366  Offline OP
I Live Here

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Posts: 13,247
Mt. Vernon, Ohio


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: offset hole in crank pulley. [Re: dartman366] #182792
01/03/09 10:14 PM
01/03/09 10:14 PM
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Posts: 2,533
Alexandria, LA
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Blucuda413 Offline
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Alexandria, LA
When I've had pulleys where it's difficult to elongate the hole (Moroso Pulley) I've just used 3 bolts. Never had a problem!!!!!

Re: offset hole in crank pulley. [Re: Blucuda413] #182793
01/03/09 10:32 PM
01/03/09 10:32 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline OP
I Live Here
dartman366  Offline OP
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Posts: 13,247
Mt. Vernon, Ohio
Quote:

When I've had pulleys where it's difficult to elongate the hole (Moroso Pulley) I've just used 3 bolts. Never had a problem!!!!!


Does that still hold true when you are running a crank trigger and the pulley is holding the relucter wheel on.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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