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Diff ratio.. 

 

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Posted: Thu Mar 10, 2005 10:37 am 
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when I got mine done, not too many people were going to the 3.7s or 3.9s, so the diff guys could only cater for speedos at swaps to a 3.45, anything after that they recommended an instruments place. I now believe it's much easier to get it done as most diff guys carry the items needed. mine essentially cost so much because as I said, they were the only mob here that did this type of thing and charged me $100 each for speedo and odometer. incidently, the diff work was done by Bosnjak engineering up in Sydney, in hindsight I should have hunted around for someone whilst I was up there but couldn't stick around. the diff guys charged an extra $25 for the parts to recalibrate should I have gone for the 3.45s.

 

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Posted: Thu Mar 10, 2005 8:46 pm 
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I rang Craft Differentials for a quote on approx. what it will cost to change my ratios to 3.73's and was quoted around $750, including labour, but that was with second hand parts, with 6 months warranty.

The same ratio with brand new parts are $1150 including labour, with the same warranty (i think thats what he said?)..

But yeah, what are ur opinions on those prices?

I have no idea myself, as ive never done a ratio change before.
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Posted: Thu Mar 10, 2005 10:37 pm 
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I paid around $1300 from memory but that included replacing anything that wasn't 100% like the LSD cones, the other reason I changed the ratios was the dreaded diff clunk on slowing down so some parts I just wanted new while they were in there, the prices you've been quoted sound pretty fair.

 

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Posted: Fri Mar 11, 2005 4:17 pm 
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I'm looking at swapping my 3.23 for a 3.45 LSD. The question i have is, would i be better of getting an EL diff as opposed to an EF diff because of the watts link centre bush placment. (the EL has a lower watts link centre bush that is soposed to make it handle better)

 

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Posted: Fri Mar 11, 2005 5:01 pm 
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Just get the T back plate for E/L diff....
One of these for speedo correction...
https://secure2.vivid-design.com.au/jay ... &SUBCATID=

 

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Posted: Fri Mar 11, 2005 10:33 pm 
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EBXR8380 wrote:
One of these for speedo correction...
https://secure2.vivid-design.com.au/jay ... &SUBCATID=


How would one go about installing this in an el with a modded diff ratio?
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Posted: Fri Mar 11, 2005 11:38 pm 
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With jaycar all the instructions are there..It fits inline with electronic speedo sender unit..Can also disable speed limiter....

 

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331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Sat Mar 12, 2005 12:52 am 
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XR8Chic wrote:
I have 3.9's in my XR8, but I wouldnt recommend it to someone with less than 6 gears.

Go for 3.7's

Craft Diffs in Granville did mine. Top blokes!!
imo good advice
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Posted: Sat Mar 12, 2005 4:54 pm 
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Bassfreak55 wrote:

Kelli, where abouts did you get your speedo corrected?


I did it myself. I have an electronic speedo adjustor.

 

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Posted: Mon Mar 14, 2005 11:47 am 
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castlemaine rod shop also build the corrector units to suit

 

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Posted: Fri Mar 18, 2005 7:35 pm 
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Why not just change the speedo cog???

 

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Posted: Fri Mar 18, 2005 9:24 pm 
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A speedo cog is NOT adjustable...

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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Posted: Fri Mar 18, 2005 10:08 pm 
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Ahem!!! Different colour cogs are for for different ratios or ..closer to .

 

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Posted: Sat Mar 19, 2005 1:06 am 
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You can only get up to 3.45 from Ford (black).. Unless you found someone to 'custom' make one... :roll:

 

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Posted: Sat Mar 19, 2005 1:27 pm 
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Hang on ..dont the new ba ford sport 3.7 gears?

 

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