scoop
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| posted on 19/7/11 at 12:42 PM |
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Swapping ford diff for landrover diff
Is the swap to the landrover 4.1 diff a straightforward one from the sierra 3.62 i have in at the moment and if so whice one do i want?
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MK9R
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| posted on 19/7/11 at 02:13 PM |
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are you on about a freelander diff? if so they are 3.21:1
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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scoop
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| posted on 20/7/11 at 08:29 AM |
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I have read many times about people using the freelander 4.1 diff but didnt know if it just bolted in and you use the sierra drive shafts
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MK9R
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| posted on 20/7/11 at 08:35 AM |
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the freelander 1 diff will require different drive shaft and prop lengthening. The ratio is 3.21.:1 not 4:1, they only made one ration
[Edited on 20/7/11 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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Doctor Derek Doctors
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| posted on 20/7/11 at 12:51 PM |
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quote:
Originally posted by MK9R
the freelander 1 diff will require different drive shaft and prop lengthening. The ratio is 3.21.:1 not 4:1, they only made one ration
[Edited on 20/7/11 by MK9R]
I'm sure Westfeild did a 4.1 Ratio Freelander Diff, but it may have only been for the LSD's they supplied, I say this becuase I'm
actually picking one up tonight from another LCB'er so I'll confirm that it is 4.1:1 ratio.
As for the conversion it will be a case of some new mounts (not to hard) and some new driveshafts, these will either have to be made bespoke or you
have to cut them and have them sleeved and welded.
Some stuff from WSCC here about 4.1 ratio Freelander Diffs
http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?act=Print;f=3;t=76141
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
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callan@t89.co.uk
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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MK9R
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| posted on 20/7/11 at 04:53 PM |
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Maybe there is an aftermarket 4.1 freelander crown wheel and pinion set, but in standard form landrover only ever supplied a 3.21 in the freelander 1.
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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sjmatthews
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| posted on 20/7/11 at 06:23 PM |
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Scoop
Why not just change the ratio of you Sierra diff, which would be a lot less work?
I have a 3.92 7" open Sierra diff you may be interested in. It's in excellent condition, just removed it from my Fury to fit a 3.62.
Steve
I'll be in the garage dear!
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Kev36
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| posted on 20/7/11 at 06:56 PM |
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newbie question whats the difference between 3.61 to a 4.1 anyway.
' A rich man is just a poor man ...with an awful lot of money..'
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adithorp
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| posted on 20/7/11 at 07:06 PM |
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quote:
Originally posted by Kev36
newbie question whats the difference between 3.61 to a 4.1 anyway.
One does 3.61 turns of the input shaft (prop) for one turn of the output shafts (halfshaft/driveshaft/wheel). The other does 4.01... In other words a
4.01 is lower geared and revs higher for a given speed.
[Edited on 20/7/11 by adithorp]
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Kev36
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| posted on 20/7/11 at 07:20 PM |
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thanks , so for economic motorway driving, diffs in the low 3s are best?
' A rich man is just a poor man ...with an awful lot of money..'
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daniel mason
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| posted on 20/7/11 at 07:43 PM |
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depends what engine your running kev! some engines would be a waste of time with a diff ratio in the low 3's
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Kev36
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| posted on 20/7/11 at 08:00 PM |
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ive got a 1600 xflow , seems to rev high when doing 70. 5 gears type 9
' A rich man is just a poor man ...with an awful lot of money..'
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sjmatthews
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| posted on 20/7/11 at 08:56 PM |
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How many revs at 70?
I'll be in the garage dear!
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Kev36
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| posted on 20/7/11 at 11:40 PM |
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the rev counter is a bit knackered it hovers between 3500 and 5500 back and forward,
' A rich man is just a poor man ...with an awful lot of money..'
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