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Drilling leaf springs #2484080
04/17/18 10:07 AM
04/17/18 10:07 AM
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Mt Morris Michigan
mopar dave Offline OP
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Think there would be any issues with drilling my Cal vert monos? I need to slide the axle back to center the tire in the wheel well and i need the clearance for the bigger tire. Instead of buying another pair of front halfs, why couldn't i just drill another hole where it needs to be? Looks like the new hole would need to be drilled about 1/2" back from the other. I talked to cal vert about this a few years ago and they were totally against it, but i'm sure they don't want the liability. Thanks

Re: Drilling leaf springs [Re: mopar dave] #2484103
04/17/18 10:50 AM
04/17/18 10:50 AM
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northern,Ohio,USA
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Clanton Offline
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Use a 1/2" spacer in front of the spring eye mount,I did.

Last edited by Clanton; 04/17/18 10:52 AM.

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Re: Drilling leaf springs [Re: Clanton] #2484106
04/17/18 10:58 AM
04/17/18 10:58 AM
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Mt Morris Michigan
mopar dave Offline OP
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Thats a great idea, but mine are moved in and welded. Gonna have to replace or redrill front section.

Re: Drilling leaf springs [Re: mopar dave] #2484109
04/17/18 11:04 AM
04/17/18 11:04 AM
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N.E. Ohio
6bblFLASH Offline
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Is it solid front bushings/aluminum??

Could you have one machined offset?


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Re: Drilling leaf springs [Re: mopar dave] #2484110
04/17/18 11:05 AM
04/17/18 11:05 AM
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Clanton Offline
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Do you use an aluminum sleeve in the front spring eye?Offset drill it.


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Drilling leaf springs [Re: Clanton] #2484115
04/17/18 11:14 AM
04/17/18 11:14 AM
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N.E. Ohio
6bblFLASH Offline
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Originally Posted By Clanton
Do you use an aluminum sleeve in the front spring eye?Offset drill it.


N.E Ohio group logic!! LOL


70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas
9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ!
2013 StickShift Challenge Winner@ Mopar Nationals!
Re: Drilling leaf springs [Re: 6bblFLASH] #2484123
04/17/18 11:29 AM
04/17/18 11:29 AM
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Clanton Offline
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Originally Posted By 6bblFLASH
Originally Posted By Clanton
Do you use an aluminum sleeve in the front spring eye?Offset drill it.


N.E Ohio group logic!! LOL
Whew ok I thought it was just me.lol


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Drilling leaf springs [Re: mopar dave] #2484143
04/17/18 12:06 PM
04/17/18 12:06 PM
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Andrews,In. U.S.of A.
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67_Satellite Offline
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I just moved the hole the locating pin sits in.

Re: Drilling leaf springs [Re: mopar dave] #2484147
04/17/18 12:12 PM
04/17/18 12:12 PM
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Porter67 Offline
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My calvert springs had a second hole about a inch apart when I removed there two spring clamps to paint them which let me move the axle an inch and cheat on the wheelbase.

If they can sell them with a extra hole, why cant you drill one?

Re: Drilling leaf springs [Re: 67_Satellite] #2484148
04/17/18 12:13 PM
04/17/18 12:13 PM
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GY3 Offline
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Originally Posted By 67_Satellite
I just moved the hole the locating pin sits in.


Ditto.


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10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Drilling leaf springs [Re: mopar dave] #2484158
04/17/18 12:31 PM
04/17/18 12:31 PM
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Tulsa OK
Bad340fish Offline
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Yeah if you need to drill another hole in the perch, not the spring.


68 Barracuda Formula S 340
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Re: Drilling leaf springs [Re: 67_Satellite] #2484180
04/17/18 12:55 PM
04/17/18 12:55 PM
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Mt Morris Michigan
mopar dave Offline OP
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Yep, thats all i want to do without risk of the spring breaking. Yes, aluminum bushings. It would be easier to redrill the spring locating hole.

Re: Drilling leaf springs [Re: Bad340fish] #2484183
04/17/18 12:58 PM
04/17/18 12:58 PM
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Mt Morris Michigan
mopar dave Offline OP
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Didn't think about that. Guess i could drill the perch instead.

Re: Drilling leaf springs [Re: Porter67] #2484184
04/17/18 01:00 PM
04/17/18 01:00 PM
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Mt Morris Michigan
mopar dave Offline OP
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I don't think they want the holes too close together, but whats too close?

Re: Drilling leaf springs [Re: mopar dave] #2484236
04/17/18 02:52 PM
04/17/18 02:52 PM
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lancaster,california
johnnycuda Offline
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If the car has CalTracs, you may run out of link bar adjustment, also the transmission yoke may not engage the trans enough if the rear is moved back.


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Re: Drilling leaf springs [Re: johnnycuda] #2484247
04/17/18 03:12 PM
04/17/18 03:12 PM
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Posts: 8,027
Mt Morris Michigan
mopar dave Offline OP
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I dont think the link bars will be an issue, but the yoke might as its already out further than recommend. Whats the recommended? 3/4"? I think mines currently 1". Will have to remeasure everything. Good call. Thanks

Re: Drilling leaf springs [Re: mopar dave] #2484266
04/17/18 04:09 PM
04/17/18 04:09 PM
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northern,Ohio,USA
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Clanton Offline
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Originally Posted By mopar dave
I dont think the link bars will be an issue, but the yoke might as its already out further than recommend. Whats the recommended? 3/4"? I think mines currently 1". Will have to remeasure everything. Good call. Thanks
Good time to come out with the u-joint spacer 1/2" lol just kidding.The brake hose may be short,The axle twist may hit the shock,Drive shaft may be too short.Nothing simple.


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Re: Drilling leaf springs [Re: mopar dave] #2484267
04/17/18 04:10 PM
04/17/18 04:10 PM
Joined: Oct 2015
Posts: 192
Gravataí, RS, Brazil
360tripleblack77 Offline
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By the way, leveraging the question, I've received my brand new monoleafs from Calvert but currently I'm running with Assassin Traction Bars that require drill a 5/16 hole at leafspring to attach the front link of the bar.

Question: Some problem to drill this hole in the front segment of leaf spring?

Thanks

traction.png

'77 Brazilian Dodge Charger R/T - Street Car
Footbrake, Pump Gas, SB Mopar 360" N/A
3300lbs, Leaf Spring + Assassin Bars
Best 1/8 mile ET
1.50 60' / 4.31 330' / 6.73@102.54mph
Re: Drilling leaf springs [Re: 360tripleblack77] #2484268
04/17/18 04:15 PM
04/17/18 04:15 PM
Joined: Jan 2007
Posts: 8,027
Mt Morris Michigan
mopar dave Offline OP
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Looks like its a non issue if you have no hole in them. I think cal vert frowns on having 2 holes close together. What is too close i dont know, but sounds like 1" apart is fine.

Re: Drilling leaf springs [Re: mopar dave] #2484275
04/17/18 04:37 PM
04/17/18 04:37 PM
Joined: Oct 2015
Posts: 192
Gravataí, RS, Brazil
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Thanks Dave!


'77 Brazilian Dodge Charger R/T - Street Car
Footbrake, Pump Gas, SB Mopar 360" N/A
3300lbs, Leaf Spring + Assassin Bars
Best 1/8 mile ET
1.50 60' / 4.31 330' / 6.73@102.54mph
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