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circleburner12
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Joined: May 16, 2011
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Location: arkansas
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 Posted: Wed Oct 05, 2011 3:24 pm Post subject: rearching springs |
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| restoring a 53 m38a1, my question is should i have my springs rearched or clean them up and repaint. is so could anyone tell me where to find the correct arched specs fot the springs to bring back to original if needed. thxs michael |
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wesk
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Location: Wisconsin
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circleburner12
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Joined: May 16, 2011
Posts: 385
Location: arkansas
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| Posted: Thu Oct 06, 2011 6:46 pm Post subject: |
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i check the distance between the eyes and my springs are not quite the lenght the manual's spec's. so im assuming the springs are find. what do you think wesk?.
thxs michael |
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wesk
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circleburner12
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Posts: 385
Location: arkansas
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| Posted: Fri Oct 07, 2011 6:06 pm Post subject: |
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| wesk, i'll have to check this weekend, i dont think so but ill double check and let you know. thanks |
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Oldsalt
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Posts: 179
Location: Texas
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| Posted: Sat Oct 08, 2011 7:30 am Post subject: |
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How does the cost of re-arching compare to new springs?
Are there any places folks recommend for it? Places to stay away from?
Thanks |
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Oldsalt
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Posts: 179
Location: Texas
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| Posted: Sun Oct 09, 2011 7:48 am Post subject: |
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What is the normal position of the spring shackle? I thought it should be in the middle of its swing, and I've been assuming my springs were sagging pretty badly on the M38A1 I'm working on, as the springs were nearly touching the frame. I just took the measurement that Wes mentioned, however, and they are only 5/8" over what the TM-9 lists as correct. Shortening them by 5/8" doesn't seem like it will get the spring shackles back to a middle position, even without any load on them.
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wesk
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| Posted: Sun Oct 09, 2011 9:16 am Post subject: |
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There really is no normal position. It varies with weight of the jeep and age/condition of the springs and weather or not the shackles and pivots are maintained with adequate lubrication. The manual spec for the distance between spring eyes is taken on an uninstalled spring. You can come close by carefully unloading the spring but for a truly accurate measurement you need to at least disconnect one end and loosen the "U" bolts on the axle.
Re-arching is usually cheaper than new springs and if done properly will last just about as long.
Finding a good shop boils down to the same choices when looking for an engine overhaul shop. You will have to locate the spring shops and get some references from them and view their facilities and make a choice.
All of this really depends on what you will be doing with the jeep.
1-Factory show resto.
Correct NOS or rebuilt springs.
2-Motor pool class resto.
As received original springs or rebuilt original springs.
3-Heavy load hauler. IE large radio set, welder, off roading, snow plowing.
My choice here would be a 1" lift aftermarket set of modern springs and shocks for the Radio set, welder or snow plowing. A 2" or greater set of modern aftermarket for off roading depending on the travel built in and the tire size used.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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Oldsalt
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Posts: 179
Location: Texas
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| Posted: Sun Oct 16, 2011 6:56 pm Post subject: |
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Wes, thanks for the info. Sorry for the delay in replying.
I don't plan on any heavy off roading with this jeep, but it will be use to carry some loads occasionally. It is actually the front springs that are the problem with this jeep however. This gives me something extra to think about. Who sells springs with lift? I've never seen anything on the MV websites to indicate that you had a choice.
Thanks again,
Russell |
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wesk
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RimfireJim
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Joined: Feb 28, 2011
Posts: 148
Location: Escondido, CA
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| Posted: Fri Oct 21, 2011 4:44 pm Post subject: |
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| Oldsalt wrote: | How does the cost of re-arching compare to new springs?
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My local shop charged $300 this year for rearching and rebuilding all four springs, including replacing clips that were missing and correctly flaring the tips of the leaves. He even matched the dimensions of the new clip material with that of the old ones, even though it required getting some stock that he normally doesn't use. That's about 3/4 to 1/2 of what stock replacement springs seem to run.
_________________
Jim M.
1952 M38 son-father project
Discovering more worn out parts, one assembly at a time  |
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circleburner12
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Joined: May 16, 2011
Posts: 385
Location: arkansas
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| Posted: Tue Nov 08, 2011 6:30 pm Post subject: |
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ok wesk here's the measurment's, sorry for being so late getting the info back to you.
from the manual tm 9-8014 page 290 the springs are center to center
front 38 3/8
rear 44 3/4
my springs are
left front- 37 7/8
right front- 37 -7/8
left rear - 43 3/4
right rear- 43 3/4
now these measurments are a close approx. so wesk whats your opinion?. thxs michael |
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wesk
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Posts: 16262
Location: Wisconsin
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| Posted: Wed Nov 09, 2011 12:47 pm Post subject: |
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If those are unloaded measurements then you should be just fine provided the springs are mechanically sound. Keep in mind that the strength of the spring is not a linear scale. A healthy spring will increase it's resistance to sag as more weight is applied. A tired spring may measure in good unloaded but with 500 pounds added may nor carry the weight as well as a new one or as well as better old one on the opposite side. A good test now is to add 500 pounds to the center rear of the jeep and compare the rear two measurements. Then do the same with the front.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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circleburner12
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Posts: 385
Location: arkansas
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| Posted: Wed Nov 09, 2011 6:45 pm Post subject: |
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| they were measured unloaded, im hoping they are good but i have no idea how or where to find 500 lbs to put on the springs to check. i may have to wait till i install them back on the frame with some weight and recheck. thxs |
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wesk
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Location: Wisconsin
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