Jump to content
SAU Community

Recommended Posts

yo
I was driving my mates r34 gtt today it has 330 kw blah blah, with a heavy duty clutch and standard drive train.
As i hit boost in second gear it broke the passenger side rear drive shaft. This is the second time its happen on the same side. The drive shaft has lasted two months tops since its been rebuilt.
as any one else had this problem ? does he maybe have a problem with his diff causing it to break on the same side ?

thanks in advance ?


Link to comment
https://www.sau.com.au/forums/topic/451743-breaking-rear-drive-sharfts/
Share on other sites

Just because it snapped coming on boost doesn't mean that's what killed it, the damage was done (not long) before the failure looking at the pics.

How hard does he drive it? Would take a massive shock loading to snap that shaft...

  • Like 1

No, GTR are outright 6 bolt, plus stronger everything.

NA should be 2x3 6 bolters, like S chassis cars, with the weakest CVs. R32/3/4 turbos should be 5 bolt with the "medium" strength CVs.

I must be going crazy, Could have sworn when I was looking at driveshafts when I snapped mine the GTR ones were 3x2 but a quick search now it seems that they are 6x1. Going senile at age 25 it seems..... :S haha

When I snapped mine I figured it was from excessive axle tramp (the initial fracture) and a hard launch one day finished it off. It was a very similar failure to yours. This was on 195rwkw with 19" wheels and 265 wide rear tyres. I now have near 300rwkw and 18" wheels with 265 tyres and Havent had a driveshaft problem since the first one. Mind you I dont go dropping my clutch and doing skids

Any pot holes or rough road when it happened?

Saw a gearbox break recently due to this, going onto power, car got slightly light and back down again over the roughness killing the box.

Never had a issue on the flat in the past.

As could axel tramp.

  • 1 month later...
  • 3 years later...
On 12/15/2014 at 5:55 PM, r34unit said:

post-99078-14186264603518_thumb.jpgpost-99078-14186264727933_thumb.jpgypost-99078-1418626504493_thumb.jpgpost-99078-14186265196841_thumb.jpg

Nice pics, very interesting break. I'm no expert but it looks like metal fatigue.

https://en.wikipedia.org/wiki/Fatigue_(material)#/media/File:Tender_fatigued_axle.JPG

If the replaced driveshaft was a used part a contributing factor could be that the unit was repeatedly loaded beyond its intended limit during its lifetime aswell. Similar to when you bend a paper clip at the same point until it eventually snaps.

Dark, corroded void near surface looks like it may also be a manufacturing defect but that's just assumption, could be just oil stain.

As to why coincidently passenger drive shaft failure may be to do with how the differential is transferring load, similar to how an open differential spins one tyre under certain conditions.

May only be far fetched and theoretical but hope this contributes to the discussion.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...