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EF/EL tailshaft into EB 

 

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 Post subject: EF/EL tailshaft into EB
Posted: Wed Apr 09, 2008 11:54 pm 
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Hi All,

Just wondering if an EF/EL tailshaft can go straight into an EB?

Thanks,

Justin.
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Posted: Thu Apr 10, 2008 8:51 am 
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no dramas if you have the four bolt flange not the u bolt flange

 

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Posted: Thu Apr 10, 2008 10:06 am 
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What's the benifits of this conversion?

 

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Posted: Fri Apr 11, 2008 8:13 am 
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FLASH wrote:
What's the benifits of this conversion?


EF/EL XR tailshaft is alloy and is stronger and lighter than standard. One of my last cars had the after affects of a snapped standard tailshaft, and I wouldn't like it to happen!
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Posted: Fri Apr 11, 2008 12:01 pm 
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Ok??? Hmm, i have an el xr6 as well and i could have sworn it was steel. (maybe its just covered in s**t???) Not that i ever really looked hard at it i was to busy cutting mufferlers out of the exhaust!!!

 

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Posted: Fri Apr 11, 2008 12:47 pm 
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nope they are definately alloy, i replaced my ED steal tailshaft with an EL XR alloy tailshaft, works a treat and a good safety modification

 

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Posted: Fri Apr 11, 2008 12:56 pm 
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kapul wrote:
nope they are definately alloy, i replaced my ED steal tailshaft with an EL XR alloy tailshaft, works a treat and a good safety modification


Exactly!
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Posted: Fri Apr 11, 2008 12:59 pm 
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i know there has been a few debates on the alloy tail shafts.
but i would beleive that the steel one is actually stronger!

just to make a point. all cars that i have seen with alloy tailshafts seem to have speed limiters..
there is a reason for this??.

but if you look at other cars that have steel tailshafts most dont have speed limiters..
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Posted: Fri Apr 11, 2008 1:18 pm 
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I Agree^^^^^^ no speed limiter on my EB (steel) speed limiter on my el (alloy aparently)

 

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Posted: Fri Apr 11, 2008 1:26 pm 
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ok this is the theory behind it, please correct me if im wrong. Speed limitors have nothing to do with it for one. Speed limitors came into effect in EB? i think on the injected motor if not then definately ED. I dont realy remeber how it all goes but between the governmetn and the car manufacturer there is an agreement/ laws in which a speed limitor has to be in place. Now i did not say that the alloy one was stronger or not becasue im not sure, but the principle is that it makes it lighter and thus allowing it to spin more freely and alot faster without the weight of the steel slowing it down. From what ive heard it is only XR models that came out with the alloy tail shaft (not sure from BA onwards) and they brought them out in alloy because of the extra power.

With all that in mind i decided that it would be good to have on my falcon if ford have them for there more powerful models of cars.

Sorry if what i wrote seems like a mess, but its my logic and reasoning for what i did :)

 

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Posted: Fri Apr 11, 2008 2:22 pm 
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here are a few examples..
ea mpfi auto and manual=no speed limiter=steel tailshaft.
my old eb2 xr8 police option20. = no speed limiter= steel tailshaft.
friends nc fairlane 4.0= speed limiter=alloy tailshaft.
friends na fairlane 3.9= no speed limiter = steel tailshaft.
my old/now friends ed gli 4.0= speed limiter= alloy tailshaft.
my ef gli wreck..= speed limiter= alloy tailshaft..
these are cars i know..
but maybe there are other reasons for the speed limiter..??
i just thought i would post up the coincidence between the 2

i had a ef v8 alloy shaft in my ea for a while and i didnt notice any difference in the way it drove..except the shaft touched the floor on hard accceleration due to the shaft being larger in diamiter and series1 ea having slightly different trans tunnel lol..
anyway
if you want to put it it will fit as long as the diff flange is the same..
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Posted: Fri May 16, 2008 11:40 pm 
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My initial thinking is chances are they would make it stronger in alloy, but alloy has a greater risk of fracture and/or fatigue failure, which might explain the speed limiter. I recall later driveshafts or at least some cars driveshaft had a carbon fibre (or the like) wrap around the outside of the alloy?

 

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Posted: Sat May 17, 2008 1:12 am 
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TROYMAN wrote:
i know there has been a few debates on the alloy tail shafts.
but i would beleive that the steel one is actually stronger!

just to make a point. all cars that i have seen with alloy tailshafts seem to have speed limiters..
there is a reason for this??.

but if you look at other cars that have steel tailshafts most dont have speed limiters..


My ef xr6 doesn't have a speed limiter,( at least not up to 220 kph) and should have the alloy shaft (being an xr6) although I haven't checked it. :oops:

The alloy shaft would also be an advantage for a lighter reciprocating mass, Lighter drive shaft =quicker to build revs= snappier throttle response

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I recall later driveshafts or at least some cars driveshaft had a carbon fibre (or the like) wrap around the outside of the alloy?


If I recall correctly, I think Joolz was telling me that the carbon fibre wraped shafts were used in the EL GT ,and they are stronger but also heavier, these would be my shaft of choice in a high power application

 

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Posted: Sat May 17, 2008 6:55 am 
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My EF XR6 doesnt have a alloy tailshaft :?

 

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Posted: Sat May 17, 2008 7:07 am 
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After the EBII all falcons have a limiter, this is becasue a single piece tailshaft has the tendancy to warp/crack/snap at those revalutions. All falcons with a steel shaft are limited at 180km/hr.

Think of it this way, a skiping rope is straight at "idle", but the more revolutions, the more it warps (up and down) from the straight line, more tendancy to explode. Alloy (less likely to warp) is lighter and thus is fitted to all EF XRs (onward) as they have a speed limiter of 210km/hr (at least).

One problem is with EFII and EL Ghias, factory fitted with all the XR6 stuff, except they have steel shafts!!! However V8 Ghias are still limited at 180km/hr

Hope that helps/makes sense

 

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