relocating spring centerbolts |
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Fltfndr
Member Joined: 01 Nov. 2013 Location: Clive, IA Status: Offline Points: 793 |
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Posted: 12 Apr. 2018 at 5:43am |
I need to move the rear axle on my 2A forward about 1 inch. Does anybody have any experience using a piece of 2 inch flat stock with a blind threaded hole for the relocted centerbolt and another threaded hole ground flush with the bottom of the spring for original centerbolt?
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Fltfndr
1948 CJ2A Restomod "Six Pac" The object of war is not to die for your country, but make the other bastard die for his. George S. Patton |
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48cj2a
Bantam Trailer Moderator Sponsor Member Joined: 22 July 2005 Location: Central, IL Status: Offline Points: 4512 |
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Same principle as Zero Rates...
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Art C USAF (Retired)
47 CJ2A #134955 Project 48 CJ2A #206759 62 L6226 Station Wagon #58167 10900 45 T3-C #191 Project http://www.bantamt3c.com http://www.48cj2a.com |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11173 |
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Hi John,
I have done this before. Simply mark a spot 1" from the original pin, and drill a new hole with a 5/16" drill bit. The trick is to go SLOW and HARD, and use oil or coolant. Once the bit starts to break through the other side, you need to ease up on the pressure, but continue to go slow. If you go too fast, it can work harden the metal. You don't have to take the spring pack apart. It does not require a special drill bit. I took a common high speed steel drill bit, sharpened it, and drilled through two spring packs, (just like yours), again, slow and hard, and eased up before breaking through. Since you are only moving your pin 1", the old hole will be fully clamped by your spring clamps and they will receive no stress. You will read, and some people will tell you that this will weaken the spring and it will eventually crack. Don't believe it, and don't take my word for it either. You have seen my video evidence. Judge for yourself. HTH |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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jeeper50
Member Sponsor Member Joined: 01 Mar. 2008 Location: Spanish Fort AL Status: Offline Points: 2579 |
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Good info!!
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Belleview ol skool winch soon. '48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers Texan at heart,Alabama by retirement |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11173 |
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I forgot to add that I did this with a pistol drill. The "blue chip or pink slip" phrase does not apply here. If your chips are discolored, stop, sharpen your drill, go slower and or harder, use more coolant.
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Online Points: 4139 |
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How about you just relocate the indexing holes in the bottom of the D-44 axle perches ?
That allows you to re- use the same spring clips (U" bolts) and spring plates. After all your only talking 1" offset and your rear axle tube is larger diameter than the 1" of offset. Plus that would not effect your shock pivot location. (shock length)
Edited by oldtime - 12 Apr. 2018 at 4:30pm |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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1947-cj2a
Member Sponsor Member Joined: 09 Sep. 2015 Location: MISSOURI Status: Offline Points: 670 |
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Is there any chance the spring was put in backwarks?
Could that have moved the bolt locations? I'm about to replace one of my springs and better to check if the bolt is centered on the spring or heavy to one side.
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RICH
1947 cj2a (Toy From Hell) |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11173 |
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These springs are Holbrooks. They are purposefully offset and can only be mounted one way. Unless John changed it, this is a D41 axle with cast perches which have cast gussets on the bottom. Can you drill an offset hole in them? Mine you can't as the foot is not solid. You may have to weld a thin plate to them with an offset hole. I've done that before too. You would have to drill an offset hole in the bottom plate as well.
In the example I showed above, I was moving the axle farther than two inches. |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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Y2GREY
Member Joined: 14 May 2012 Location: Fayetteville NY Status: Offline Points: 98 |
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if we are talking Holbrook springs check your spring hangers, they may be an inch or so too far rearward. The center pins are already pretty far offset.
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Fltfndr
Member Joined: 01 Nov. 2013 Location: Clive, IA Status: Offline Points: 793 |
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Correct. Have already moved the perches about 3/4 " forward and 32 " tires still hit the rear of the fender well on full stuff. Holbrooks are very soft but have great articulation
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Fltfndr
1948 CJ2A Restomod "Six Pac" The object of war is not to die for your country, but make the other bastard die for his. George S. Patton |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11173 |
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How do your shackle angles look at full stuff? Are they laying back pretty good? ... Maybe a little too far?.... if so, you could drill another hole in your front perch and move it forward this way:
My wheels were rubbing at the back of the wheel wells at stuff and my shackles were even breaking over. I did this field fix at Moab, and it ended up putting the axle exactly where I wanted it. If you are happy with your shackle angles at full stuff, I’d move the axle on the spring. |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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Y2GREY
Member Joined: 14 May 2012 Location: Fayetteville NY Status: Offline Points: 98 |
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is there enough meat on the axle perch to drill a second hole?
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rocnroll
Member Sponsor Member Joined: 20 July 2005 Location: Tuscumbia, AL Status: Offline Points: 13562 |
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Yes....that's the way I did it too.
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'47 CJ2A PU
'48 CJ2A Lefty "Common sense is not that common" |
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jpet
Moderator Group Sponsor Member x 5 Joined: 30 Apr. 2008 Location: Ramsey, IL Status: Offline Points: 11173 |
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You can't drill a hole in the axle perch
... you would have to weld a plate to it or something. |
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CJ2A #29110 "General Willys"
MB #204827 "BAM BAM" "We do what we can, and we try what we can't" |
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rocnroll
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Why not...that one has a hole in it?
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'47 CJ2A PU
'48 CJ2A Lefty "Common sense is not that common" |
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Y2GREY
Member Joined: 14 May 2012 Location: Fayetteville NY Status: Offline Points: 98 |
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Another option would adjusting upward wheel travel via bump stops.
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stude-a-willys
Member Joined: 02 Sep. 2014 Location: Conifer, CO, US Status: Offline Points: 133 |
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Relocation plates like this? You have to redrill/make the ubolt plates to match. It worked in spring over toyota land, but I was never really happy until I moved my front hangers.
custom sizes available: http://www.4crawler.com/4x4/ForSale/Shims.shtml#CustomRelocationPlate |
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