RPM on the 4,8 GRX Auto at 120 km/h???

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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by NMAD » 19 Nov 2015 15:07

Tinus lotz wrote:My 4.2 diesel gives me 6.7 at a snails pace really its not lekke driving a nomally asperated 4.2 when you are used to 4.8 power ...lets see if it changes after turbo is fitted ....iam gonna try for 500nm and 145kw ....my 4.8 just changes on what you ask of it ....loose sand dunes i have gone down to 2km per liter ....
I heard some horror stories about a patrol 4.8 doing 60l/100km in thick sand somewhere is australia, that must hurt the wallet :doh:

Love the 4.8 power/torque and super smooth auto box :biggrin:

500nm sounds like good torque for the diesel.

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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by ricster » 19 Nov 2015 16:12

" 500nm sounds like good torque for the diesel. "...... agggg ja..... sort of average for the 4.2 diesel...
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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by Michael » 20 Nov 2015 06:08

Tinus, we will have to see what the standard pump is capable of. 500nm might need a 12mm pump and bigger turbo as boost is going to be around 1.2bar for that amount of torque if I have to guess.
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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by Herrie » 20 Nov 2015 08:02

My Patrol 4.5 GRX manual se revs is 2600 op 120km/h. :thumbup:
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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by petri oosthuizen » 20 Nov 2015 12:50

Thanks guys. I know the 4500 RPM, I'm driving one myself as an interim solution.

I've also heard that the GRX Auto has very looooong gearing - which is great; but it apparantly also "searches" on inclines, and kick back to 4th frequently.......?? This true??

If this is a hassle, I'd rather try find a nice 4,8 GL manual. Apparently you do'nt get them new any more??
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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by Tinus lotz » 20 Nov 2015 14:06

If you pull a big load yes but you have the tip tronic 4 gear if it bugs you mine stays in 5 gear 95 % of the time
I dont think its a issue

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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by petri oosthuizen » 20 Nov 2015 14:29

Nee wat Tinus, we do'nt really tow heavy stuff . Maybe a caravan 1/2 times a year, same with the boat. And not far distances.
I just LOVE low RPM at highway speeds, gives a much more laid back drive.

Just another OT question - accessories on the GRX are not a problem I guess?? I'm talking basic stuff??
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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by Tinus lotz » 20 Nov 2015 15:03

Jip almal na 2005 is dieselde

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Re: RPM on the 4,8 GRX Auto at 120 km/h???

Post by Peter Connan » 20 Nov 2015 15:37

petri oosthuizen wrote:Just another OT question - accessories on the GRX are not a problem I guess?? I'm talking basic stuff??
Suspension bits are the same as for that '94 SGL you bought new 21 years ago.

Roof racks and so forth are the same for all the Y61's from your 4.5 through to the latest.

Bumpers etc. are the same for all the face-lift models.
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