Thread: Exhaust Brake for 3.9 Isuzu County

What is the practical application for it on a 4bd1 110?

With the low range gearing offroad is slow enough, especially when combined with the engine braking. As for towing, who tows that much weight without trailer assisted braking taking into consideration the legal towing limit of 80kph on big large trailers, floats and boats?

yeah it will be one of the best things u could do! we hav a 86 county and we fitted a exhaust brake to it about a year ago and it does a brilliant job but the down side is u cant stop playing around with it on every hill we are now looking for one to fit to my 200tdi ( a bit of a tip on installing the switch for it we mounted ours on the side of the gear stick) anyways cheers !

Originally Posted by dobbo

What is the practical application for it on a 4bd1 110?

With the low range gearing offroad is slow enough, especially when combined with the engine braking. As for towing, who tows that much weight without trailer assisted braking taking into consideration the legal towing limit of 80kph on big large trailers, floats and boats?

Unless I am mistaken the 80kph limit on large trailers disappeared about ten years ago. But as pointed out, the trailer has brakes on it before you would need extra Landrover braking.

John

Here are some snippets from a manual for Isuzu with 4BD1.

Originally Posted by dobbo

What is the practical application for it on a 4bd1 110?

With the low range gearing offroad is slow enough, especially when combined with the engine braking. As for towing, who tows that much weight without trailer assisted braking taking into consideration the legal towing limit of 80kph on big large trailers, floats and boats?

Urm I do and the exhaust brake takes the work of slowing you down away from your brakes... having been in a truck driven by a numptie that ran out of brakes on a decent I can assure you that its not an experience you want to have. as I was taught... "brakes are to bring the vehicle to a complete halt or to slow it down in an emergancy. If you have to use the brakes to slow down either your not planning ahead far enough or someone is doing something wrong."

Originally Posted by c.h.i.e.f

yeah it will be one of the best things u could do! we hav a 86 county and we fitted a exhaust brake to it about a year ago and it does a brilliant job but the down side is u cant stop playing around with it on every hill we are now looking for one to fit to my 200tdi ( a bit of a tip on installing the switch for it we mounted ours on the side of the gear stick) anyways cheers !

thats where I put it too along with the high low beam and indicator switching

Originally Posted by JDNSW

Unless I am mistaken the 80kph limit on large trailers disappeared about ten years ago. But as pointed out, the trailer has brakes on it before you would need extra Landrover braking.

John

yep loong gone and it only ever applied to vehicles that were not articulated and towing more than their mass (ie an empty series towing 2 ton.)

Originally Posted by Blknight.aus

.............
yep loong gone and it only ever applied to vehicles that were not articulated and towing more than their mass (ie an empty series towing 2 ton.)

Um - it depends on the state. NSW retained it long after some other states, certainly the adjoining ones, and it applied to all non-articulated trailers over 750kg. Nice little revenue earner with interstate visitors. At one stage they were thinking of putting warning signs at the Murray crossings, but I don't think it ever happened.

John

As well as being a revenue earner, it was also much used by Highway Patrol and Transport Inspectors (mermaids!) to harass line haul truckers. you could haul freight across NSW for months on end at 100k's and suddenly you would get pinged for exceeding 80k's. Usually when the bully boys could not find anything else wrong.

I wouldnt mind betting that it also applies in the ACT...

but thats what happens when you let toff nosed expensive overnamed coffee drinking yuppies make your decisions...