Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

Diff ratios

Tech Talk for Cruiser owners.

Moderators: toaddog, Elmo, DUDELUX

Forum rules
Post Reply
Posts: 35
Joined: Sat Nov 13, 2010 11:23 am

Diff ratios

Post by cruise75 »

Can someone help me. My 75 series originaly had 31 x 10.5 tyres on it and was revving its arse off. I changed the tyres to 33 x 12.5 x 15. Not revving as hard but at 100 km/h it still revs at 2400 rpm. My mate has the same size tyres and his revs at 1800rpm. Is it the diff ratios?. If so how do i find out what my ratios are and what should they be? Cheers guys.
Top
Posts: 3038
Joined: Thu Aug 05, 2004 10:06 pm
Location: VIC

Re: Diff ratios

Post by dogbreath_48 »

2400rpm sounds about right at 100km/h. To hazard a guess I'd say your diffs are the standard 4.11's. Nothing wrong with it, if you overgear it any more it'll be a pig to get off the line.

Don't know what setup your mate is running to cruise at 1800 rpm.
Tetanus rolling on 37's
Top
Posts: 1846
Joined: Fri Oct 31, 2008 2:18 pm
Location: Brisbane

Re: Diff ratios

Post by SCANAS »

x2 sounds like you have 4.11 ratio's to me. Your friend must have different ratios or transfer case gears?

Are you both talking indicated 100kph or a GPS or corrected read out
I'm not quitting drinking, I'm retiring at the top of my game - sporting comeback likely.
Top
Posts: 35
Joined: Sat Nov 13, 2010 11:23 am

Re: Diff ratios

Post by cruise75 »

Thanks guys. not sure what hes running either but will askk at next meet. It is at indicated KPH. Dont trust GPS readings
Top
Posts: 68
Joined: Thu May 21, 2009 8:27 pm
Location: tassie

Re: Diff ratios

Post by brissle »

trust the gps not your speedo
Top
Posts: 498
Joined: Tue May 04, 2004 7:48 pm
Location: sydney

Re: Diff ratios

Post by HUNTERLUX »

Also are they both the exact same running gear eg turbo or not petrol or diesel ect ect
Top
Posts: 35
Joined: Sat Nov 13, 2010 11:23 am

Re: Diff ratios

Post by cruise75 »

Both 1HZ models
Top
Posts: 236
Joined: Fri Aug 20, 2010 12:59 pm
Location: Perth

Contact:
Contact CustomTurbos

Re: Diff ratios

Post by CustomTurbos »

Does a stock 1HZ even have enough torque to push 100km/h at 1800rpm?

Sounds like tacho reading wrong......

cruise75 wrote:Can someone help me. My 75 series originaly had 31 x 10.5 tyres on it and was revving its arse off. I changed the tyres to 33 x 12.5 x 15. Not revving as hard but at 100 km/h it still revs at 2400 rpm. My mate has the same size tyres and his revs at 1800rpm. Is it the diff ratios?. If so how do i find out what my ratios are and what should they be? Cheers guys.
LX470 1HDFTE
Performance Direct Bolt On Turbos for: 1HDT/1HDFT/1HDFTE/12HT/13BT/1VDFTV/1KDFTV
Top
Posts: 35
Joined: Sat Nov 13, 2010 11:23 am

Re: Diff ratios

Post by cruise75 »

Have had the ol girl out to 125, but shes revving
Top
Posts: 118
Joined: Sun May 03, 2009 7:27 pm
Location: FNQ

Re: Diff ratios

Post by Mulcahy »

i have a 2H engine with 31 inch tyres and i rev to 2500 with the 5 speed and can easily get 125 out of it it is reving but not flat out and i have 3.8 ratios
Top
Post Reply

Return to “Cruiser / Prado”

Who is online

Users browsing this forum: No registered users and 2 guests