Exaust Brakes Good or Bad ? Expeiences Please
Submitted: Thursday, Jul 20, 2006 at 13:13
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Dunedigger
I have a Factory 4.2 diesel Landcruiser 79 Series 3 years old and would like to fit an exhaust brake as I tow heavy trailers (3.5 tons) (GVM is 6.1999 ! ) I find the vehicle runs away very easily on some long hills and its 1st gear all the way to advoid frying the brakes..
I know about Jake brakes on trucks but that is very different to exhaust brakes.
Do they make a BIG difference and will the pressure affect the turbo seals ?
What are the pros and cons. Does any body have first hand experience with them?
Dunedigger
Reply By: Member - andrew B (Kununurra) - Thursday, Jul 20, 2006 at 15:19
Thursday, Jul 20, 2006 at 15:19
Only used them a small amount in a Coaster Bus - 4.2 litre diesel similar to your cruiser without the turbo - Toyota themselves may be of some assistance. They definately did
well slowing the bus up, made it a lot better to drive in hilly country as
well as in trafic.
Cheers Andrew
AnswerID:
184484
Reply By: Peter 2 - Thursday, Jul 20, 2006 at 17:41
Thursday, Jul 20, 2006 at 17:41
Yep the coaster I drive every day has one on it's 1HZ, have often wondered why cruisers weren't fitted with them. It will hold a full bus at whatever speed yo want when descending hills, hardly use the brakes except to actually stop completely especially in traffic.
AnswerID:
184517
Reply By: STEVE069 - Thursday, Jul 20, 2006 at 18:01
Thursday, Jul 20, 2006 at 18:01
Hi,at work we have the newer coaster with the 4 cyl muilti valve turbo motor in it, it has a exaust brake and has not given any problems yet and workes very
well. Thats working in a
mine site. The motor lookes like a 4.2 turbo with 2 cylinders chopped off.
AnswerID:
184519
Reply By: Ronnie - Thursday, Jul 20, 2006 at 19:25
Thursday, Jul 20, 2006 at 19:25
Hi Dunedigger we have them on all our work vehicles at the
mine,(Patrols) wagons and flat trays, you can go all the way down the decline 1:7 steeper in
places virtually not using the brakes,they are set to come on when you back off the accelerator.the one I use 4.5 turbo intercooled has not give any trouble in 3 years
I am having one fitted to my Patrol 3l this weekend so I can keep you posted.
Regards Ronnie
AnswerID:
184536
Reply By: eerfree - Thursday, Jul 20, 2006 at 22:17
Thursday, Jul 20, 2006 at 22:17
I am bound to be wrong here and I stand to be corrected if that is so, but if Dunedigger uses an exhaust brake on his LC pulling that trailer does this not mean he is trying to stop his rig using ONE wheel???
eerfree
AnswerID:
184580
Follow Up By: Dunedigger - Friday, Jul 21, 2006 at 07:51
Friday, Jul 21, 2006 at 07:51
Engine braking is always with one wheel. Just with a exhaust brake you have more retardation and can use a higher gear while going down long hills. Can be useful while 4WDing. When you back right of on the accelerator pedal the exhaust brake kicks in and reduces engine speed more quickly.
For all the feed back from you, thanks. I will start getting a quote to buy and fit
Dunedigger
FollowupID:
441308
Reply By: Flash - Friday, Jul 21, 2006 at 10:22
Friday, Jul 21, 2006 at 10:22
One wheel????
If you are driving (or engine braking) through a normal differential BOTH wheels are sharing equal torque and only when one slips/skids is there a problem.
That's like saying when you are driving up a steep
hill in 2WD that all the engine output goes through one wheel.... like I said not one wheel but normally shared equally by two. That's what a diff is all about.
Cheers
AnswerID:
184630
Follow Up By: Member - Roachie (SA) - Friday, Jul 21, 2006 at 11:17
Friday, Jul 21, 2006 at 11:17
Plus, if you're descending and steep
hill with a loose, muddy surface etc, you'd probably have the thing in 4x4 (front hubs locked.....centre-diff locked etc as the case may be) and then you have 'definitely' got at least one front + one rear wheel with traction. If it's really slippy you'd be engaging diff locks too so 'definitely' 4 wheel braking.
FollowupID:
441344
Reply By: Member - Roachie (SA) - Friday, Jul 21, 2006 at 11:21
Friday, Jul 21, 2006 at 11:21
I used to always see the ad's in old issues of the mags (when I used to buy them) and there was this one particular ad for a mob in Qld that sold a exhaust braking system for $1,100-. I used to ponder over getting one fitted but couldn't justify the price tag for a large solenoid, a butterfly and brackets plus a couple of switches.
I'll watch with interest to see what happens with you blokes who intend fitting these. Great idea, but too exxxy for my pocket.
AnswerID:
184639