• Advertisement

diff ratio.

Get help fixing your Isuzu from other club members

diff ratio.

Postby rustyvr4 » Sat Aug 11, 2018 10:39 am

without the tag on diff housing. how do i tell what diff ratio my 1997 mu is running. 3.1 manual if this info helps. i,d like to remove front diff totally as this beast hardly see,s dirt. At 100km/h motorway driving its pulling nearly 3000 rpm, id like to change diff ratio to lower this rpm, if this possible?
No officer i wasn,t slideways i think you was seeing things sir
Isuzu Baby
Posts: 30
Joined: Sun Apr 24, 2011 9:41 am
Age: 33
Country: new zealand
City: tauranga
Vehicle: 1996 mu 3.1 turbo MANUAL, running 20psi. fuel maxed out. air adjustable shocks in rear. gas struts on bonnet

Re: diff ratio.

Postby tonkamu » Sat Aug 11, 2018 12:57 pm

I see your thinking, but your front diff is not engaged unless you have 4wd system engaged. only your front wheels and hubs will be spinning, removing the front diff will do nothing for your road driving. :)

3k at a 100kph is not rare for a MU but its alittle high, do you have small wheels on? factory is 31 inch wheels or maybe your tachometer mine sometimes jumps between 2600 and 3100 rpm doing motorway speed.
Isuzu Senior
Posts: 154
Joined: Sun Jan 01, 2017 7:23 am
Age: 36
Country: NZ
City: Auckland
Vehicle: 2.8 Mu 1991 All Black. MODS - Rear Lifted 2.5" Lovells Leafs / Rear Auto Locker / LSD in front / 33x12.5x15 MT Achilles / 9500 RUNVA w plug n kills switch inside cab / EGT, Voltage, Turbo timer, Boost gauge / 20 PSI VF10 Turbo with VF10 exhaust housing 2.5" downpipe with merged 2" wastegate pipe to full 2.5" straight pipe / GFB Boost Tap / Maxed fuel with grinded down cable stop / Adjusted Boost Compensator / 3.1 Oil Cooler / Intercooled / 3" Custom intake to sealed K&N airbox & filter to Snorkel / Catch Can / Xtreme Outback HD clutch / 80 amp alt / RockfordFosgate 300rms AMP w 2X Rockford Power 6x9's BT HDeck / all EGR, QWS, AC pump deleted.

Re: diff ratio.

Postby geeves » Sat Aug 11, 2018 3:42 pm

This means 4.55/1
This means 4.3/1
There is also a 4.8 diff but no one has ever seen one
Sanding your knuckles before starting work can help. That way you cant skin them
User avatar
Site Admin
Posts: 8302
Joined: Sun May 10, 2009 1:36 pm
Location: wellington
Age: 55
Country: NZ
City: Wellington
Vehicle: 94 bighorn
96 wizard

Return to Drive train, Steering and Suspension

Who is online

Users browsing this forum: No registered users and 2 guests