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Old 01-15-2004, 01:27   #1 (permalink)
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Early Falcon Disc Brakes

I have an XP falcon sedan complete with four stud drums all round and I want to upgrade to front discs. I was told that XR Stub axles and disc brakes bolt straight in. Does anyone know if that is true or will there be problems with the conversion (i think it's called bump steer)?

I also have a tuff bored out 221 bottom end and a 2V head ready to go on, what carb or carbies would people recomend (I have a standard 2 Barrel ford carby that needs to be reconditioned)? Has anyone got extractors on a 221 or 250 with a 2V head in an XK-XP? No ones seems to know if there are any off the shelf available. Sorry for all the questions by you guys seem to really know your stuff.
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Old 01-15-2004, 03:51   #2 (permalink)
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Re: Early Falcon Disc Brakes

Don't know about "bump steer" but if you're going to update your brakes to disc's dont bother with early stubs, go straight to late xb or later, as the xr-t's run solid disc rotors and the xw- early xb have smaller wheel bearings and are more expensive to replace.
As for the carb on you're 2v, a 350 holley should be as good as anything, if maybey a little thirsty.
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Old 01-15-2004, 14:31   #3 (permalink)
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Re: Early Falcon Disc Brakes

Or update the whole front end (suspension & brakes) by swapping out what's shown on the left for what's shown on the right.

From here => http://www.rrs-online.com.au

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Old 01-15-2004, 16:21   #4 (permalink)
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Re: Early Falcon Disc Brakes

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Originally Posted by HSV.ETA
I also have a tuff bored out 221 bottom end and a 2V head ready to go on, what carb or carbies would people recomend (I have a standard 2 Barrel ford carby that needs to be reconditioned)?
I had a 500 holley when i had this set up in my XW but my head was ported and polished and i had a big cam, so a 350 should be perfect.
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Old 01-15-2004, 16:39   #5 (permalink)
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Re: Early Falcon Disc Brakes

If it was just discs you wanted, you can get 4 stud XP discs.... Personally, I wouldn't, but they are out there.
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Old 01-16-2004, 05:11   #6 (permalink)
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Re: Early Falcon Disc Brakes

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Originally Posted by EBXR
If it was just discs you wanted, you can get 4 stud XP discs.... Personally, I wouldn't, but they are out there.
I may be wrong........but I thought xp's had 5 stud wheels if they had disc brakes (all utes and vans had 5 stud)?
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Old 01-16-2004, 06:26   #7 (permalink)
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Re: Early Falcon Disc Brakes

Questions are good you learn stuff!
Unless your restoring your Xp dont waste your time using Xp parts as you will get better parts for less money using later model components such as Xc stubs, calipers, disks and a Vacume booster and Dual circuit master cylinder and 14" rims.These are easy to source and cheaper to service You will have to sort out the stud pattern on the diff Which will only take more power for so long.
I too was concerned with bump steer using Xc parts but it was a not really a issue with the shelby modification to the top suspension arm and a non spec wheel alignment .I reckon the stopping power and inproved cornering outways the only negative ive noticed which is a lightness in the steering at high speed. But this could come down to the Xc power steering thats also been fitted.
RRS which Raptor is talking about if You have the money also sell a bump steer correction kit which moves your inner tie rods into the the correct position to the outer tierod point on the stub axel.
Cant help with the 2v head swap though but if your planning on that using a 2V head the 4.1 engine its attached to Cause you cant beat cubic inches.I doubt any one make an off the shelf headers any more .When i bought my first Xm i threw an alloy head crossflow and C4 into it,cost me $200 dollars to get the drive shaft sorted and T bar shifter and Xc throttle pedal and i was rocketing down the road with really under powered drum brakes. Really and I mean really sort out the brakes before messing around with more power with these early falcons!!

Have you checked out www.xpfalcon.kicks-ass.net as it is an awsome site and has more infomation you could imagine
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Old 01-16-2004, 06:59   #8 (permalink)
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Re: Early Falcon Disc Brakes

Quote:
Originally Posted by apolloxbgt
I may be wrong........but I thought xp's had 5 stud wheels if they had disc brakes (all utes and vans had 5 stud)?
Yup - utes and vans had 5 stud wheels, but sedans, wagons and coupes had the 4 stud wheels. I've only ever seen disc brakes from a sedan, and that was 4 stud...
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Old 01-18-2004, 02:30   #9 (permalink)
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Re: Early Falcon Disc Brakes

I stand corrected.
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Old 01-18-2004, 21:24   #10 (permalink)
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Re: Early Falcon Disc Brakes

Thanks for the info, I already have a five stud diff at home (don't know what its from it has a 3.5 ratio and is a single wheeler) and a set of ford 14inch 5 spoke mags so thats not a problem. 302XM What do you mean by a "shelby modification to the top suspension arm"? I would prefer to use later model parts so the XC parts sounds good. Do you know if the XC parts are the same as XD and E's because these are even cheaper and easier to source, and will they bolt into an XP?
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