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Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 09:32
by AdrianPowrie
Hey Tinus,
i think the 2003 were the last ones without a "cat" 2004 onwards it was standard from the factory...
If I am not mistaken...

Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 09:41
by Grootseun
I also think that by 2004 they had "cats" but that luckilly no problem yoy can rip them out and get more performance and i ave an electronic devic available that fools the rear O2 sensor into thinking the cat is still there
Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 09:49
by Tinus lotz
that is my thinking too!!!when mine was taken out it made a big difference

Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 10:30
by David
Mine is a 2006 and it has no Cat ...

Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 10:50
by KEENO
Does anyone know where you can buy a manifold gasket for a 4.5 except at the dealers?
Re: 4.8 Exhaust Manifold
Posted: 16 Apr 2012 11:43
by Peter Connan
Keeno, my pal Gerrit got one from an exhaust shop in PTA? It was n ot a perfect fit, but works.
Re: 4.8 Exhaust Manifold
Posted: 17 Apr 2012 13:28
by KEENO
Thanks Peter,
Opened the cover and luckily it is only the front pipe gasket.
Re: 4.8 Exhaust Manifold
Posted: 20 Apr 2012 12:29
by J@coBez
Re: 4.8 Exhaust Manifold
Posted: 20 Apr 2012 12:48
by Peter Connan
Jaco, I think you have a management problem, unless your foot is really heavy.
I have a older 4.2 (less aerodynamic) with 33"x 12.5" tyres, roof rack with lots of stuff on, and I get better than that.
Tinus gets in excess of 6km/l when driving with heavily loaded roof rack and speedocruise at 120km/h on his 2003 4.8, although he is only on 285 muddies.
Re: 4.8 Exhaust Manifold
Posted: 20 Apr 2012 13:19
by J@coBez
Thanks Peter
I will have the management system checked again.
Any suggestions on some one that can do a full diagnostic on my Patrol.
The motor was dino tuned and chipped by SAC two weeks ago and according to them every thing is in order.
I had a stage one conversion done against all recommendation from you, but the manifold was a bigger concern at that stage.