86White_T/A305

Lol yes I did make sure it wasn't upside down as thought was my initial thought that I was the idiot. But its just the sheer girth of the LPW cover extends out more tan the sway bar would clear. It may be just time to upgrade that aswell..plus with the stock one still there next to all these shiny new parts looks horrendous haha. The track bar as its called is for sure the issue. I have UMI non adjustable control arms and a adjustable panhard bar,stock torque arm. I adjusted the panahrd bar to the same length as the stock bar to start with. Everything for the most part looks even and straight.

Ill look into a replacement track bar and in the meantime Ill just mod the stock on as to not interfere with the diff for now.

WildCard600

Sorry if I missed it, but what is your plan for brakes ?

Debating on re-gearing+posi unit for my 10 bolt or just biting the bullet and going 12 bolt or 60. Not planning on crazy power but the cost of a re-gear, posi and labor on the 10 bolt starts making a new axle assembly look like a plausible option. Buy once, cry once and all that.

86White_T/A305

So i took you advice 84 Z28 and ordered the Founders upper track bar/panhard relocation bar.Also ordered a new sway bar. I figure..Im this far into it back there..might aswell ditch all the stock stuff.Eventually i will replace the torque arm also but my wallet needs some long recovery time. For now im just going to clearance the stock track bar and drive the car around.

WildCard600, im running 93-97 lt1 fbody brakes with ebc yellow pads and rotors. I went with 3.54 gear as thats the highest ratio s60 offers. I didnt want to do 3.73 or lower because its a street/strip turbo car. i can tell just a tad more pep with the new gear vs the 3.42 gear I had before.

86White_T/A305

Well having completed my break in miles for the s60,all things went well. I notched the factory trackbar for now as I wait for the Founders piece to arrive. Modding it gave the car a chance to have suspension travel again and the very top bolt on the lpw cover just rubbed off some of the undercoating on the gas tank itself. MWC did supply me with a steel cover at no charge which is great,very standup on their end! Once its time for a fluid change,Ill switch covers with a new gasket as recommended.

After the 300miles breaking it in and heat cycling the diff..I started to roll into some power again and just started doing my own logs with hptuners wanting to fine tune something. The slight change in gear is noticeable around town. The car feeling and sounding great.I readjusted the torquearm, retorqued everything under the car. I was feeling very confident and ready to go to a local armdrop event the next day. I headout to clean the car at the wash,fill up the tank and park it for the night. The next morning welcomed me with the noise at the end.

IROCZman15

iTrader: (25)

whew, thats quite a hefty break in period too.

mine was:
jack up car, run car in drive for 2 minutes, run car in reverse for 2 minutes, drive car around for 10 mins. let cool down. done


glad u got it all setup and in the car enjoy. best of luck with the engine noise issue

86White_T/A305

Yes I did that too just to make sure nothing was wrong and start the break in. But in the instructions from Strange clearly states a minimum 250 mile breakin/heat cycle before doing any hard accelerations. I called them when I was asking questions and was told that in the past, guys would do just a few mins of forward/reverse..then 30 min drive and 30 min cool down. The hit the strip and break the rear still from improper break in. After testing more indepth the said as things create a proper wear pattern and heat cycles takes a while under light driving conditions proved to be best

86White_T/A305

Following up the past few weeks I got the rear installed..borken in.Had a lifter failure put a big halt on testing things out. had to tear the engine down,find the issue and then then move onto repairs.Its just my luck with this car:



Now brings me back here as I get the car running decent again and I start doing highway runs I remember there is a serious driveline vibration I cant find the culprit. Under hard acceleration the vibration isnt there,but cruising at 75mph and up it feels like the driveshaft wants to come out.My troubles arent over.Its not something i want to take to the track and make a pass..only to spit out the driveshaft that should be balanced from strange.My 4thgen rear and the custom driveshaft were butter smooth well over 150mph.id dare not touch that speed with the new diff.Ive been told to check the pinion angle and the torque mount at the trans being too far forward or back when i put it back on during the swap. Any other suggestions?

84 z28

For the hell of it, un bolt your driveshaft and turn it 180 degrees and see if the vibration changes

86White_T/A305

Yes Ive been told to try that aswell for driveshaft phasing. I might also play with the lca bracket setting. I think its currently on the bottom holes.maybe move it up 1 spot?

84 z28

I would leave them in the lowest hole, like you said check your pinion angle and torque arm mount. Did you swap out the transmission mount when you put the rear end in by any chance? When I switched from the stock trans mount to poly because I was tearing them I picked up vibration with the poly

???

iTrader: (5)

I've chased drive shaft vibration in so many different ways over the years with 3rd gens. every single time it's ended up being the drive shaft. I've had them build, re balanced, watched them do it and it show 0 for balanced. but ever single time as a test I throw in a old stock v6 drive shaft I keep that still has that little metal tab on it that holds the caps on when it's not in the rear yoke. and it goes away every single time.

sadly I know you can't fit a stock known shaft in to test. but I'd bet money it's the shaft. good luck

86White_T/A305

I did find the problem as I just put the car up on stands with the suspension loaded. rotated the driveshaft and spotted the tailend on the u-joint 1 side was not seated correctly. I removed the driveshaft,rotated it 180* and then slowly tightened it down making sure the joint fully mated. At the same time I installed my new trackbar and panhard bar relocation brackets, double checked everything was as good as can be and headed to the highway. I crept up to higher speeds and had a slight vibration much higher in the 125mph range. Much more tolerable. I know the angle isn't going to be perfect until an adjustable tq arm is put on but Now I know it wasn't a bad driveshaft or joints. I left the lca's on the lowest setting. My trans mount is already a poly mount and same with the tq arm mount,which were there long ago. I really never had vibrations going poly mounts on everything.

As I was doing a cool down,I ran into some friends and decided to play..hitting boost cut on a hot humid night in a turbocar royally sucks,Im loving the gearing in the s60 with 3:55. So now the next step is an adjustable torque arm to fully dial in the angles. And tone down my wastgate spring as its too high on the street.

84 z28

Glad everything worked out for you

86White_T/A305

Me too for the money I invested in the rearend the last thing I wanted was a faulty part. Now I feel confident to drive it hard consistently and see how it performs at the track.

QwkTrip

iTrader: (22)

I'd choose the hole that puts the control arm at the closest to 2 degrees down toward the axle. That will give you a good starting point with acceptable balance between straight line traction and cornering.

BDBMOTO

I am a Master Dealer for Strange and have been for 5 years. I have never had a S60 sent back and I promise you Strange will go above and beyond to help you with an issue you are having with a rear end under warranty. Please explain what went wrong with the 2 s60"s and what Strange refused to do to help you. I daily drive a s60 behind an 1100 HP engine with 0 issues.

ez2cdave

So, a "Master Dealer" for Strange shows up, and the thread abruptly ends ? REALLY ?

Lurbie

iTrader: (3)

Seems like it was over 6 months before he posted a response to comment made 2 years prior, and now ~2.5 years later you bring it back with a sarcastic post? Really? 🤣🤣🤣

ez2cdave

Yes, "really" . . . A guy in an "official position", as a representative fior Strange, shows up and asks questions about what happened and the guy who was bitching disappears.

WTF ?