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 Post subject: Re: 2
PostPosted: Tue May 16, 2017 10:40 pm 
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I Say: Car mods are like OddBodz, you got to collect them all! -------------------------------------
Vehicle: MY05 STi swapped sled

Posts: 17614
Location: Spearwood Perth WA
So you want to take out the 2" strut top spacers from the FRONT, then put 1.5" spacers in its place? This is because the front LCA bushs are tearing from the 2" lift forcing the control arms too far downward. Is this right?

Thats all well and good for the front, if the 12mm is enough to prevent the bushs from tearing again. (Which i doubt it will be.) If they were the pre 08 style LCA, then maybe, but the SH onwards use a different style of LCA, specifically the rear bush of the front LCA is different. And looks more prone to tearing from excessive LCA angles.


But that will do absolutely nothing for the rear end which has 2" blocks spacing the entire crossmember/diff sub assembly and tailshaft center bearing and strut tops down. Is that right? Are you thinking the vibration is from the front end and not the tailshaft.

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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Wed May 17, 2017 7:01 am 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
Yeah the place that I just got it back from (driveshaft specialist) said that the issue wasn't the rear tailshaft as that was ok.he said the issue was definitely the angle of the driveshafts and in particular the degree which the cv joints are working at. This has caused the lca rear bushes to split. Apparently due to the angle, when I accelerate in first and second, the car lifts at the front and makes the angles worse and that is what is causing the jolting vibration (driveshafts going a bit crazy before they settle in at speed). It makes sense to me, however knowing very little about cars they could really say anything. If the front is the issue, i hope I'll at least be able to confirm this with a smaller lift as surely this was improve mildly and confirm the hypothesis?
I'm so damn confused. Haha. I just need a good mechanic I think :-(


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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Tue Jun 13, 2017 7:51 am 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
Just to close this out in case anyone encounters similar issues in the future. Eventually found the cause of this problem and it was indeed the driveshafts. Apparently the SH has a different drive shaft to the earlier models (3 ball vs 6 ball joint?) which means it doesn't handle lifting as well. After speaking with Navhaluva, we sourced some different higher spec drive shafts from a guy in Perth (outer control shafts) which has a lot more play than the OEM ones at near full extension (can't remember the exact design, but I'll try and post a pic) . Vibration is now gone, but mechanic didn't tighten a wheel but properly which led to a new vibration at speed. Initially thought it was the shafts, however once tightened it's all gone. I now have a humming sound above 40km which feels like it's coming from the front right wheel. Any gear, load or no load and doesn't change with braking. Guessing the loose wheel nut has damaged the bearing? Or maybe alignment is out (although doesn't feel likely).
So one problem solved, another problem found. The fun of modifying cars hey :-)


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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Tue Jun 13, 2017 7:55 am 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
Image picture of the shaft from outer control. It's a chunky unit and almost hits the sub frame. Will need to keep an eye on that.


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 Post subject: Re: 2
PostPosted: Tue Jun 13, 2017 9:05 am 
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I Say: Car mods are like OddBodz, you got to collect them all! -------------------------------------
Vehicle: MY05 STi swapped sled

Posts: 17614
Location: Spearwood Perth WA
+1 for outer control in myaree. Used to work on the same street as those guys. Very helpful.

Try tightening up the axle nut on the wheel that hums. And make sure the nut is punched in and hasnt un-wound itself.

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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Tue Jun 13, 2017 12:08 pm 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
Bram wrote:
+1 for outer control in myaree. Used to work on the same street as those guys. Very helpful.

Try tightening up the axle nut on the wheel that hums. And make sure the nut is punched in and hasnt un-wound itself.

Yeah Phil was very helpful and knew what he was talking about. Plus top quality on the new shafts.
Cheers for that advice, will definitely I've those a try before taking it back to the mechanic.


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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Sat Jun 17, 2017 5:16 pm 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
Confirmed that the wheel bearing was stuffed. Probably unrelated; just **** luck I guess.
My car is finally driving nicely and issue free! Now for a sump guard and I'm done ✅


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 Post subject: Re: 2
PostPosted: Sun Jul 16, 2017 2:39 pm 
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Vehicle: MY11 SH 2.5 xs

Posts: 10
Location: Victoria
Are you able to shed any light on the price of the new axels?
I have this same problem and just brought 600 bucks worth of subaru oem axels.


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 Post subject: Re: 2" Lift on SH Forester - vibration/shudder under load
PostPosted: Mon Jul 17, 2017 10:37 am 
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Vehicle: MY12 Subaru Forester X3

Posts: 39
Location: Victoria
These were $240 each at trade price, so not too dissimilar to the OEM ones. The reason I went with these vs OEM is due to the extra ability to handle fairly severe angle of the outer CV due to the design of these axles. Hopefully the OEM ones work for you though. It was a bit of a nightmare to sort out for me.


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 Post subject: Re: 2
PostPosted: Wed Jul 19, 2017 11:55 am 
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I Say: I like to breathe underwater ;)
Vehicle: '97 Forester

Posts: 1438
Location: SE Melbourne
John at VolksBaru (0397935655) told me there is a Subaru engineer working on longer OEM front axles which will be perfect for this

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