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05-17-2018, 04:09 PM
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#1
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Senior Member
Join Date: Dec 2014
Location: Edmonton, Alberta
Posts: 349
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Adding Spacer Blocks to lift trailer
My 5th wheel sits a little low at the rear and I'm thinking of lifting it using some spacer blocks instead of welding a sub frame onto the axle (at great cost). I'm wondering if anyone has experience with this. I need to raise it 2 or 3 inches.
I can't lower my hitch anymore as it is on the lowest setting, but I do have room to move the pinbox up. There is about 8 inches between the top of the box and the unit.
My concern with going 2 inches is that if it isn't high enough, I only have about two inches to adjust at the front, but if I go 3 inches, I can lift my hitch if need. Although I'm not sure how high is recomended above the box.
Also, because the trailer is front high, there is 200 extra pounds on the rear axle, I'm thinking I might want it nose down any way. I'm thinking this because my fresh tank is above and possibly slightly behind my axles and I also occasionally tow a quad behind which adds weight to the rear.
Insight anyone?
__________________
2017 F150 XLT 3.5l Eco Boost, SC, 8' Box, 4X4
Max Tow (10 speed, 3:73, 11,700lbs), HD Payload (2440lbs)
2015 Puma 253 FBS
2013 Hyundai Santa Fe
2000 Honda EX 400, Rad Rover 6 Plus
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05-17-2018, 04:21 PM
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#2
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Always Learning
Join Date: Nov 2011
Location: Four Corners, FL
Posts: 21,891
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Definitely first start with moving your pinbox up- it's easy to do. A buddy did it for me (with minor involvement from me) at a campsite. You generally want 5-6" of clearance between the fifth wheel and the truck bed rails.
Then if you're still not level, start considering a lift kit.
__________________
Officially a SOB with a 2022 Jayco Precept 36C
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're part-timing on long trips
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05-17-2018, 04:38 PM
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#3
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Raise the pinbox as high as possible to maintain the 5"-6" bed clearance. If that doesn't work, highly recommend the welded lift kit. They shouldn't be that expensive as it is only 4 pcs of 2" sq tubing 1/8" or 3/16" wall.
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05-17-2018, 05:12 PM
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#4
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Senior Member
Join Date: Dec 2014
Location: Edmonton, Alberta
Posts: 349
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Quote:
Originally Posted by OldCoot
Raise the pinbox as high as possible to maintain the 5"-6" bed clearance. If that doesn't work, highly recommend the welded lift kit. They shouldn't be that expensive as it is only 4 pcs of 2" sq tubing 1/8" or 3/16" wall.
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2100 vs 700
__________________
2017 F150 XLT 3.5l Eco Boost, SC, 8' Box, 4X4
Max Tow (10 speed, 3:73, 11,700lbs), HD Payload (2440lbs)
2015 Puma 253 FBS
2013 Hyundai Santa Fe
2000 Honda EX 400, Rad Rover 6 Plus
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05-18-2018, 01:09 PM
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#5
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Senior Member
Join Date: Feb 2015
Posts: 162
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Quote:
Originally Posted by Palinduff
2100 vs 700
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Money isn't the only factor. Lift blocks increase side stress on the suspension, hangers and main frame. A sub frame adds cross bracing that can prevent the main frame rails from rolling. Also makes the frame stronger in the critical area between the axles.
If you add lift blocks, then get the spring hangers reinforced. Also check out Correct Track, it is supposed to lift the unit 1-2" and provide cross bracing that lift blocks won't do.
__________________
Larry Day, Texas Baptist Men volunteer since '01
'13 Silverado LT 3500HD D/A CCSB 2wd, custom RKI bed
'17 Puma 351THSS toyhauler
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05-18-2018, 03:56 PM
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#6
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Senior Member
Join Date: Oct 2013
Location: Central New York
Posts: 327
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I had a similiar issue with my new 5er. Installed a
Moride SRE 4000 with the upgrade wetbolt kit and changed the rear blocks on my truck from 4 inch to the 2 inch. The SRE 4000 kit includes a cross brace between the center hangers. The SRE 4000 raised the 5er 1 inch or so which gave me a total of 3 inches to level the RV.
__________________
2017 Open Range RES 347, 2022 F 450 4X4 LWB 6.7.
Hayes Autoformer, Moryde SRE 4000, Sailun Tires, Andersen Aluminum hitch.
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05-19-2018, 12:06 AM
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#7
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Member
Join Date: Jan 2017
Posts: 38
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If you want to raise up the camper without altering the rig just install larger tires and rims that would be the safest way to gain several inches of height …..
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05-19-2018, 09:09 AM
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#8
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Senior Member
Join Date: Oct 2015
Posts: 1,502
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I've used lift blocks all but one RV I've owned without issues.
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