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diff ratios

Tech Talk for Cruiser owners.

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Posts: 22
Joined: Fri Apr 20, 2012 8:33 pm

diff ratios

Post by TOJO 12-HT »

Hey
I have a HJ75 5speed manual (H55F)
Running 35s on factory diff ratios, that i belive are 4.11

Now i want to mainly fit 79series axle assemblys F&R, with 79series diffs 4.3 ratio. What final drive ratio would i get back to? 33s?
As atm its just a bit high geared
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Re: diff ratios

Post by 80's_delirious »

Sounds about right.

33s change final drive by about 5%
35s change final drive by about 10%, 4.3:1 diff ratios will bring it back to about a 5% change in final drive.
RN wrote:pussy is out, its the log for me... Thank you Jesus.
Posts: 22
Joined: Fri Apr 20, 2012 8:33 pm

Re: diff ratios

Post by TOJO 12-HT »

Sweet

Also i have air locker in my 4.11 diff, would the 4.3 ring n pinnion fit in my old diff center?
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Re: diff ratios

Post by 80's_delirious »

Nope, 105/79series centres are different, ring gears gave a different bolt pattern.
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Location: Australia

Re: diff ratios

Post by hulsty »

Side gears are different, 79 series use 32 spline axles.
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Re: diff ratios

Post by X-ron »

Here is a link for a diff ratio chart that might help out: http://www.4-wheeling-in-western-austra ... ratio.html" onclick="window.open(this.href);return false;

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Re: diff ratios

Post by TOJO 12-HT »

ah ok so it might b quickest and easyest to jus fit 79 axles complete, and maybe do a 6stud hub conversion.
because im coin coil f&r anyway
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Re: diff ratios

Post by hulsty »

Cant easily do that either, just get 5 stud wheels.
The Silver Bullet - BJ74
Where the actions at Ontrack 4wd Club
http://www.ontrack4wdclub.com/
[url]http://www.cams.com.au/[/url]
Posts: 3740
Joined: Sat May 26, 2007 5:04 pm
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Re: diff ratios

Post by 80's_delirious »

hulsty wrote:Cant easily do that either, just get 5 stud wheels.
X2 there is no straight forward way to convert 5stud to 6stud.
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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