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Body Flex - Rear Strut Needed?

BstewyR33
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BstewyR33 Community Regular

BstewyR33

Posted
Posted

I'm fairly sure that I'm in need of a rear strut bar to stop some back end body flex. The problem occurs going up corners (say drive ways, entrances to shops etc) the noise mainly comes from rear passenger side.

The noise sounds like metal twisting followed by a "ping" sound. I've had a look at suspension and it seems fine (no cracks or dings that I can see in the strut, no loose nuts)

I stuck my head under the car and there was no clear evidence of something being broken or loose.

so I'm thinking a rear strut brace might be in order, am I thinking right or not?

Cheers in advance for any input.

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https://www.sau.com.au/forums/topic/426723-body-flex-rear-strut-needed/
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89CAL Grand Master

89CAL

Posted
Posted

I think you either have a suspension issue, or a really serious issue that a strut brace isnt going to fix

I dont have a rear strut brace and even when I have one of the rear wheels off the ground I dont hear any flexing noises, back end feels rigid and nice. It's long been debated that the rear strut brace is fairly useless because there is support behind the seat and under the parcel shelf so there is no gap in between the 2 sides of the car like there is at the front. The front strut braces do make a difference. Rear I can't say they dont because I dont have one, but plenty of others will tell you this

have you got a worn bush or some other issue in the back? Maybe pull all your carpet out and have a look around in the boot if you think there is really some flex there

colourclassic Mentor

colourclassic

Posted
Posted

The rear strut brace attaches to the strut towers via 2x feeble stamped steel brackets. The amount of flex in the rear strut brace mounting brackets would exceed the amount of flex the rear strut towers ever see during use, making it only marginally effective. I would check subframe mounting hardware/bushes are all tight/in good condition. Also check strut top mounts, HICAS tie rod ends and mounting points etc.

MrStabby Grand Master

MrStabby

Posted
Posted

Rear suspension arms on skylines are mounted to a rigid subframe and resist all the lateral force. Strut braces mount to the body of the car, not the subframe, and therefore do bugger all. Front is different as the upper arm mounts onto the body.

Ask for a recommended suspension shop in your state subforum and let them check it out.

LANDSCRIBBLE Mentor

LANDSCRIBBLE

Posted
Posted

I also have BC BR coilovers, and i think i have the exact same noise coming from the rear somewhere. Infact its been like that for about 1.5 years. Will check my coilovers too, obviously there should be zero play or movement in the springs?

LANDSCRIBBLE Mentor

LANDSCRIBBLE

Posted
Posted

Haha wow ive done a good job on them then. Will have to get some pics. I think these are what i need to get? http://item.mobileweb.ebay.com.au/viewitem?itemId=180829991026 and http://item.mobileweb.ebay.com.au/viewitem?itemId=120953333963

89CAL Grand Master

89CAL

Posted
Posted

I get an odd loud click kinda noise from the back only when its wet. Its more of a loud click then a bang but it could probably be described as either

Thought it was my diff mounts which are all new polyurethene bushes but thinking now maybe it might be the strut tops on my BC BR coilovers. Not sure why it only does it when its wet but

BstewyR33 Community Regular

BstewyR33

Posted
  • Author
Posted

My noise isn't constant, mainly either when reversing out of driveway rear passenger wheel is off the driveway first

It'll go turning right around a roundabout, then make the noise when exiting the roundabout

And also turning right up a hill - entrance to car park at train station of a morning

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