Rumble After Lift

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Abletobecain
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Rumble After Lift

Post by Abletobecain » Wed Aug 28, 2019 10:45 am

Hello all,

So I lifted my offroad rig a couple weeks ago. I had lifted the rear a few weeks before that with no issues. However, after lifting the front I'm getting a nasty rumble from somewhere.

All the following new parts were installed: strut mounts (stock), struts (KYB 363037), springs (MOOG 81043), inner and outer tie rod ends (stock), and ball joints (stock). Everything was torqued to spec and I got an alignment afterward too. Still a rumble. I just re-torqued everything and there's still a rumble. LCA bushings looked fine...so did sway bar bushings.

The rumble is there at every speed but faint at lower speeds while shaking the steering wheel a bit at higher speeds. It seems to oscillate a bit, but quickly.

Any ideas? Too much of a lift with CVs rubbing in the boot? Has anyone that has done this lift had to shim down their carrier bearing on the rear drive shaft? Although it really feels like the rumble is from the front.

Next step is tires so when that happens it'll rule out unbalanced tires but the ones on it now were the same as before the lift with no rumble. Idk...just searching for ideas at this point.

Thanks!
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD :cry:
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red"/for sale soon)

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NWMO
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Re: Rumble After Lift

Post by NWMO » Wed Aug 28, 2019 11:12 am

Able,

I used the same MOOG springs with new struts, etc. and have the Pathfinder springs in the rear, with no change to the carrier bearing and no issues. I would speculate you may have a half-shaft that isn't happy with the changes. I've put a little over 8,000 miles on my half-shafts with the lift and 14" wheel/tires with no issue. In fact, I really like how the car drives.

Chris
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The Professor
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Re: Rumble After Lift

Post by The Professor » Wed Aug 28, 2019 11:15 am

Add spacer blocks to the transmission and engine crossmembers to solve the unhappy CV angles. This is commonly done when lifting Subarus of similar vintage and helps preserve the original angles, prolonging the life of the CVs.
1975 Subaru SuperStar wagon
1984 Subaru Turbo-Traction wagon
1984 Subaru Turbo-Traction hardtop
1987 Subaru RX 3-door
1987.5 Subaru RX 3-door
1987 Subaru RX Type-RA 3-door
1987 Toyota Tercel SR5 wagon
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Abletobecain
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Re: Rumble After Lift

Post by Abletobecain » Wed Aug 28, 2019 11:30 am

Chris...I was wondering about that as well. They were brand new and felt fine but I guess they could be bad. I was under her yesterday and found a tiny bit of play when wiggling the passenger inner CV joint. Is this normal? Now I'm worried one of them might fail and/or destroy my front diff. I have the same lift as you...I wonder what's different? I was thinking about swapping back the stock strut assembly from my parts car but I don't want to pay for another alignment. Perhaps I just order some new half shafts instead.

Prof...I was thinking of that as well but I'm not sure that's the problem and I'd like to preserve the added clearance of the lift. Plus, as Chris explained above...same lift...no rumble.
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD :cry:
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red"/for sale soon)

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Petros
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Re: Rumble After Lift

Post by Petros » Wed Aug 28, 2019 5:01 pm

sounds like too much angle on the CV joints. that will wear them out very quickly. you have to lower it so the angle stays small, or work out a way to reduce the angle on the joint by lowering the engine/trans some how. Not sure how it can be done on a Tercel, to get much change would take some cutting and welding of the cross member and perhaps the oil pan and engine mounts. shimming down the cross member would lower the engine, but it could also change the suspension/steering geometry perhaps.
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Abletobecain
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Re: Rumble After Lift

Post by Abletobecain » Wed Aug 28, 2019 11:16 pm

Found the rumble, lol.

Image
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD :cry:
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red"/for sale soon)

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Petros
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Re: Rumble After Lift

Post by Petros » Thu Aug 29, 2019 1:12 am

how old are those tires? perhaps time to replace them all.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

The Professor
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Re: Rumble After Lift

Post by The Professor » Thu Aug 29, 2019 8:29 am

Abletobecain wrote:
Wed Aug 28, 2019 11:30 am
Prof...I was thinking of that as well but I'm not sure that's the problem and I'd like to preserve the added clearance of the lift.
We don't have clearance issues... :D :wink:

Image
1975 Subaru SuperStar wagon
1984 Subaru Turbo-Traction wagon
1984 Subaru Turbo-Traction hardtop
1987 Subaru RX 3-door
1987.5 Subaru RX 3-door
1987 Subaru RX Type-RA 3-door
1987 Toyota Tercel SR5 wagon
1999 Subaru Forester S
2002 Subaru WRX sedan

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Re: Rumble After Lift

Post by irowiki » Fri Sep 06, 2019 3:17 pm

Boom?
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Abletobecain
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Re: Rumble After Lift

Post by Abletobecain » Fri Sep 06, 2019 3:24 pm

BADA-BOOM!
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD :cry:
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red"/for sale soon)

User avatar
Abletobecain
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Posts: 339
Joined: Sun Dec 09, 2018 9:18 am
My tercel:: 1983 4WD DLX, 1986 4WD SR5, 1985 4WD SR5, 1983 4WD SR5
Location: Kitsap County
Contact:

Re: Rumble After Lift

Post by Abletobecain » Fri Sep 06, 2019 3:25 pm

Also...no idea how old the tires were but the new tires will be in monday. Found some 195/75/14 all terrain recaps...with discounts only $285 including shipping!

Prof...that is a gorgeous pic and that car looks hella fun!
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD :cry:
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red"/for sale soon)

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