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Re: Diff Ratios
Posted: 03 Jul 2021 04:53
by Tinus lotz
mvcoller wrote: ↑07 May 2021 11:46
These are the guys you need to see if your speedo reads incorrectly. They fixed my old 4.2i GQ Rev counter that was totally wrong after fitting the Lexus V8 in place of the Petrol straight 6. They also corrected my old MPH speedo to indicate the correct KPH readings on the old (British Import) MPH speedo
https://www.facebook.com/Reef-Industria ... 963/about/
Reef Industrial & Motor Instruments cc
4,7 14 Google reviews
Instrumentation engineer in Johannesburg South
Address: 24 Gill St, Gillview, Johannesburg South, 2091
Hours:
Open ⋅ Closes 4PM
Phone: 011 334 1544
These guys are pretty close to you, PeterB.
Thys has a fix for the speedo . Wilfet one was done and works 100%
Re: Diff Ratios
Posted: 03 Jul 2021 12:10
by JTEC
Tinus lotz wrote: ↑03 Jul 2021 04:52
JTEC wrote: ↑02 Jul 2021 14:40
davidvdm wrote: ↑16 Mar 2021 22:16
Tinus, is there anything available in right drop front and rear with 4.88 ratio. I have an H260 rear and C200 front end in the Sani, and was wondering if there is maybe a more "modern" alternative. Although the H260 has an amazing LSD, it is a bit old at 40 years, and it is a big lump of metal with that 10.5" crown wheel. I was hoping to find a H233 front and rear, but it does not seem these are available in 4.88. I just can't go higher as I am already struggling a bit with the 33" tyres which would work better with a 5.3? ratio.
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I have seen 4.88 and 5.1 available for the H233 on Aus websites
Yes they are avalable here but it's big money
Can bring them in from AUS for Under R18k. Not sure what local costs
Re: Diff Ratios
Posted: 03 Jul 2021 12:31
by davidvdm
Those prices are just beyond me. I'll just live with the 4.88 H260 lump. I just need to replace all the bearings urgently. But nobody can tell me what bearings I need till its apart. I was hoping to get the spares before I strip.
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Re: Diff Ratios
Posted: 26 Oct 2021 20:10
by Jannie Vosser
Dankie vir goeie raad en hulp, Tinus, waardeer opreg.
Ek het deur Tinus ook die 4.8 se diff ratio's laat verander en die speedo laat regstel.
Wat 'n verandering!!
Dit is totaal 'n ander kar.
Dit wat Michael met die 4.2tdi's regkry, bedoelende baie beter "driveability", dit kry hierdie conversion reg met die petrol 4.8.
Enige iemand wat 'n 4.8 al gery het, agter 'n voertuig gesit het en dan wil verbygaan, weet...jy trap die versneller, al wat gebeur is die enjin revs spring tot +5 000rpm, en dan na 'n ewigheid, begin die voertuig te versnel.
Nou: As jy trap, dan GAAN jy!
Ek sal hierdie "conversion" enige tyd aanbeveel.
Re: Diff Ratios
Posted: 15 Nov 2021 00:07
by Lekrom
Jannie Vosser wrote: ↑26 Oct 2021 20:10
Dankie vir goeie raad en hulp, Tinus, waardeer opreg.
Ek het deur Tinus ook die 4.8 se diff ratio's laat verander en die speedo laat regstel.
Wat 'n verandering!!
Dit is totaal 'n ander kar.
Dit wat Michael met die 4.2tdi's regkry, bedoelende baie beter "driveability", dit kry hierdie conversion reg met die petrol 4.8.
Enige iemand wat 'n 4.8 al gery het, agter 'n voertuig gesit het en dan wil verbygaan, weet...jy trap die versneller, al wat gebeur is die enjin revs spring tot +5 000rpm, en dan na 'n ewigheid, begin die voertuig te versnel.
Nou: As jy trap, dan GAAN jy!
Ek sal hierdie "conversion" enige tyd aanbeveel.
Wil maar net beaam wat Jannie genoem het.
Uit en uit die moeite werd! Ek het 4.3" ratios opgesit vir my 35s en dis 'n ander kar. Cruise control werk nou, jy het krag wanneer jy dit soek, great stuff
Re: Diff Ratios
Posted: 27 Sep 2022 15:18
by ra_01
Hi gents reviving an old thread.
I will be upgrading my tyres from 265/70 R17 to 285/70 R17 (Maxxis 811) as soon as stock arrives. How is your fuel consumption after changing the diff ratios to 4.1 driving normal speeds like 110km/h? Have you managed to fix the speedo difference.
Thanks
Rahul
Re: Diff Ratios
Posted: 27 Sep 2022 18:39
by Spike
ra_01 wrote: ↑27 Sep 2022 15:18
Have you managed to fix the speedo difference.
Speedo difference isn't a concern. I have 285/70 R17 fitted on my 4.8 Auto and the speedo shows 2kph over GPS true speed, which is pretty close and you have 2kph grace for speed traps
Re: Diff Ratios
Posted: 27 Sep 2022 19:28
by Tinus lotz
Spike your odo will be under reading by 10%
Re: Diff Ratios
Posted: 28 Sep 2022 06:39
by ra_01
Spike wrote: ↑27 Sep 2022 18:39
ra_01 wrote: ↑27 Sep 2022 15:18
Have you managed to fix the speedo difference.
Speedo difference isn't a concern. I have 285/70 R17 fitted on my 4.8 Auto and the speedo shows 2kph over GPS true speed, which is pretty close and you have 2kph grace for speed traps
Hi Spike
Thanks for your input, I was referring to Wilfred post, where his speedo was out by 20km/h after changing his diffs.
Very happy, totally a new vehicle. I found that my speedo is now out by 20Km/h on 120, it now reads 140. Did you experience the same? I have 33" tyres. My Patrol is a 2010, 4.8 GRX
Re: Diff Ratios
Posted: 28 Sep 2022 08:42
by JohnBoyZA
ra_01 wrote: ↑27 Sep 2022 15:18
How is your fuel consumption after changing the diff ratios to 4.1 driving normal speeds like 110km/h?
Thanks
Rahul
Hi Rahul
was planning to change to 4.1 before my trip to Kaoko, but run out of time. I now have 35s, and will at least have a good record of actual consumption in different terrains before the ratio upgarde. So far, city driving has been giving me approx 4.3 km/l on the 35s. Will keep you posted.
