Notices
General Technical
Sponsored by:
Sponsored by: CARiD

Broken front driveshaft

Thread Tools
 
Search this Thread
 
Old 30 October 2016 | 06:02 PM
  #1  
trevsjwood's Avatar
trevsjwood
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Sep 2007
Posts: 1,660
Likes: 6
From: Northampton
Default Broken front driveshaft

I broke a front driveshaft at the Pod this morning, first run at launch. My new ACT clutch doesn't slip lol
I have a JDM sixspeed conversion on my blobeye wrx wagon but the front driveshafts are standard items. I can easily source a good used replacement but are STI driveshafts stronger and would they fit?
thanks
Trev
Old 30 October 2016 | 07:49 PM
  #2  
boosted's Avatar
boosted
Scooby Regular
 
Joined: Jul 2011
Posts: 2,514
Likes: 1
From: harlow
Default

Originally Posted by trevsjwood
I broke a front driveshaft at the Pod this morning, first run at launch. My new ACT clutch doesn't slip lol
I have a JDM sixspeed conversion on my blobeye wrx wagon but the front driveshafts are standard items. I can easily source a good used replacement but are STI driveshafts stronger and would they fit?
thanks
Trev
Unusual to break a front?!
Could it be down to a crack or surface defect? I don't think you need to upgrade
Old 30 October 2016 | 08:09 PM
  #3  
trevsjwood's Avatar
trevsjwood
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Sep 2007
Posts: 1,660
Likes: 6
From: Northampton
Default

the rears were changed with the 6 speed conversion so I then wondered if the fronts were a weak point. The break is clean and straight as in a snap.
I had the NOS activated and launch control at 5000 rpm, so it got 490lbsft in one hit, I don't think the clutch blinked.
I drove 20miles to get home, what car would do that with a broken shaft
Old 30 October 2016 | 09:17 PM
  #4  
Steve Whitehorn's Avatar
Steve Whitehorn
Scooby Regular
iTrader: (13)
 
Joined: Jan 2002
Posts: 4,036
Likes: 20
From: Kent
Default

Another way to look at it.
Is that you want the weakest point in the drive train to be the shafts.
As you are better breaking one of those twice a year that regularly doing boxes and diffs.

Have you had the six speed conversion in long? If you have and the shaft has been good for while before it broke. Then perhaps just fit another standard one and see how you go with it.

If bang it goes again pretty quickly ...then look to upgrade. But bear in mind you always want the shafts to be the thing that does let go. It doesnt allways work out that way of course
Old 30 October 2016 | 09:23 PM
  #5  
JGlanzaV's Avatar
JGlanzaV
Scooby Regular
iTrader: (3)
 
Joined: May 2009
Posts: 5,021
Likes: 1
Default

Originally Posted by Steve Whitehorn
Another way to look at it.
Is that you want the weakest point in the drive train to be the shafts.
As you are better breaking one of those twice a year that regularly doing boxes and diffs.

Have you had the six speed conversion in long? If you have and the shaft has been good for while before it broke. Then perhaps just fit another standard one and see how you go with it.

If bang it goes again pretty quickly ...then look to upgrade. But bear in mind you always want the shafts to be the thing that does let go. It doesnt allways work out that way of course
This.

I have done a couple of shafts this year, im just thankful it wasnt the box!
Old 30 October 2016 | 09:36 PM
  #6  
trevsjwood's Avatar
trevsjwood
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Sep 2007
Posts: 1,660
Likes: 6
From: Northampton
Default

I just hadn't looked at it that way, but thanks, anything major would be terminal for me, I can cope with a broken driveshaft.
Old 30 October 2016 | 10:02 PM
  #7  
boosted's Avatar
boosted
Scooby Regular
 
Joined: Jul 2011
Posts: 2,514
Likes: 1
From: harlow
Default

Sounds like drivetrain shunt, unusual to break a front shaft, there's only 20% or so of the power going to the front on a hard launch
Old 31 October 2016 | 10:57 AM
  #8  
rickybobby's Avatar
rickybobby
Scooby Regular
 
Joined: May 2016
Posts: 381
Likes: 2
From: Scunthorpe
Default

I've got a pair of R180 6 speed blobeye sti front driveshafts in my shed, female end type. Bought them a year ago when I had a noise that I thought was a cv but turned out to be strut top. Drop me a message if theyre any good to you Trev
Old 31 October 2016 | 01:32 PM
  #9  
ScottyPPP's Avatar
ScottyPPP
Scooby Regular
 
Joined: Mar 2013
Posts: 1,497
Likes: 3
From: Hampshire
Default

I've got Blob STI front shafts on my 6 speed Blob wagon, fitted them recently, they are beefier than the stock WRX shafts.
Old 31 October 2016 | 05:40 PM
  #10  
trevsjwood's Avatar
trevsjwood
Thread Starter
Scooby Regular
iTrader: (2)
 
Joined: Sep 2007
Posts: 1,660
Likes: 6
From: Northampton
Default

thanks, I've bought a single wrx driveshaft for now to get my car back on the road
Trev




All times are GMT +1. The time now is 10:24 PM.