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Speedlimiters are GOOD! 

 

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Posted: Tue May 09, 2006 4:55 pm 
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They are 3 1/4" alloy with 2.3mm wall thickness. Alloy is more ridgid than steel and being alot lighter they have a greater reduction in flex at higher speeds than steel. This flexing is what causes the driveshafts to fail.
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Posted: Tue May 09, 2006 7:15 pm 
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data_mine wrote:
Dyno read 192KM/H at the break point. I though engineers gave 30% tolerance.

F**k, only 192. Then, in theory, a poorly balanced tailshaft could easily give way at 160-180.

 

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Posted: Tue May 09, 2006 8:00 pm 
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falcon_hell - yup, I would've expected more leeway in the engineering - or maybe mine was a poor example to begin with.

This EB shaft I saw, was indeed - telescopic as such - tube inside a tube, with a layer of some sort of adhesive or rubber between them - strange but true - funnily enough it was shagged to, but came from Jakes big turbo'd EB Fairmont.

Good news, I've got a new passenger side airbag, Xr tailshaft (alloy, thicker as mentioned), and have a tranny coming in the mail all up <$800 so far, yet to see what else has been shagged (I still need to get exhaust redone).

Hurry up weekend. I wanna get the car going again. (and nicco, I'll keep that 6500 figure in mind).

 

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Posted: Tue May 09, 2006 8:03 pm 
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hey, i got a drivers airbag siting here collecting dust. you can have it if you can arrange some sort of pickup/delivery

 

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Posted: Tue May 09, 2006 8:27 pm 
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nicco wrote:
just quickly, i vaguely remeber from when i first joined to FM, that someone (i think waggin) was saying that the stocko bottom ends can only rev to about 6500 or so, then they will throw rods.

Just to keep in mind when increasing the rev limiter.




yeah piston speeds are getting to what you might call stupid speeds at that sort of rpm

3909 ft/min at 6000rpm
4235 ft/min at 6500
4561 ft/min at 7000

 

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Posted: Tue May 09, 2006 8:27 pm 
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Geez, that's wild!! Poor philly..

 

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Posted: Tue May 09, 2006 8:54 pm 
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i have an xr ecu in my gli, but as i've said before - im not going over 180 until i get an alloy tailsahft, and even then i still don't like the idea of going 180, even on a dyno.
that really sucks mate, hope you get it back on the dyno soon.
what sort of power is it making with the cam?

 

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Posted: Tue May 09, 2006 9:16 pm 
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I forgot to mention in my post above. BIG thanks to MRE-40L for supplying me a box as an 'exchange' for a reco.

 

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2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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Posted: Tue May 09, 2006 11:24 pm 
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So did the EF2 mont ghia get the stronger XR6 tail shaft?

any one know?

 

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Posted: Wed May 10, 2006 12:07 am 
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Don't know. I'd assume so because it got the XR engine too. I can tell you how to find out :lol:

 

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Posted: Wed May 10, 2006 12:39 am 
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EFmonty wrote:
So did the EF2 mont ghia get the stronger XR6 tail shaft?

any one know?


nope the ghia had a speed limmiter some where around the 200 mark.

 

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Posted: Wed May 10, 2006 1:16 am 
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so how much would the xr6/8 tail shaft coast installed?

 

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Posted: Wed May 10, 2006 3:44 am 
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stockstandard wrote:
Ive had it happen to me. Took out the tailshaft, gearbox, and snapped the bellhousing in half. Scary s**t!

Yet somehow poeple think its safe to drive at 180kph+
we used to shear uni-joints,pinion drives and the welds on custom made tail shafts 25-30 years ago,with highly moded 6s and 8s, had to use 2 tail shaft hangers-loops.i am suprised street drag meets dont enforce using them,for the same reason.we had cars shear the gearbox uni-joint and dig the shaft in to the road and flip ,roll,some fatal. appears to be aluminium tail shaft or super light steel, for stock fraud,increase dia, of tude and wall thickness to suit kw of torque output and use v8s unis. used to run 140-160mph back in the 60s-70s but now radar!!!! better to find out on dyno-----than the road :roll: :roll:

 

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Posted: Wed May 10, 2006 7:08 am 
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s**t mate, that sucks big time, good tohear it was on the dyno, and no one got injured.

This has definetly given me second thoughts of trying to touch the 180km\h mark. Definetly will have to get some sort of stronger tailshaft in before i flogg her on the dyno/drags.

Just a question is the fairlanes tailshaft any longer than the SWB XR's?? i dont think they are, but just wanna make sure.

 

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Posted: Wed May 10, 2006 1:45 pm 
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hans hartman wrote:
stockstandard wrote:
Ive had it happen to me. Took out the tailshaft, gearbox, and snapped the bellhousing in half. Scary s**t!

Yet somehow poeple think its safe to drive at 180kph+
we used to shear uni-joints,pinion drives and the welds on custom made tail shafts 25-30 years ago,with highly moded 6s and 8s, had to use 2 tail shaft hangers-loops.i am suprised street drag meets dont enforce using them,for the same reason.we had cars shear the gearbox uni-joint and dig the shaft in to the road and flip ,roll,some fatal. appears to be aluminium tail shaft or super light steel, for stock fraud,increase dia, of tude and wall thickness to suit kw of torque output and use v8s unis. used to run 140-160mph back in the 60s-70s but now radar!!!! better to find out on dyno-----than the road :roll: :roll:



So V8 tailshafts are stronger, will they fit in I6 auto from V8 auto ?

 

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