200/300TDI exhaust brake?

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wrickm

wrickm

Active Member
Posts
138
Location
Virginia, USA
Has anyone installed an exhaust brake, or considered it, and has a good reason it's a dumb idea? I yank a utility trailer full of fire wood around a bit and the drums get "warm". i use what engine braking is already available top pretty good effect, but i figure with an exhaust brake i would barely need the drums. . .
 
@miktdish An exhaust brake is a valve that closes in the exhaust to create back pressure to make engine braking more effective. I use downshifting now to take pressure off the drum brakes, but (idealy) an exhaust brake would make that much more effective, but there can be downsides in some engine. Can cause valve float if the springs arent strong enough. That's why i was asking if anyone had done it.
 
What is a matter with the trailer brakes?
In good order the trailer brakes will be coming on with only a normal light touch on the towing vehicles brakes.
And the more weight there is in the trailer the harder its brakes should come on. Or is it a case your log buss just does not have any?
 
I grew up driving an old 70s van, and for me, using lower gears is the best way to help braking. I would not bother with exhaust brake as it might affect the engine and combustion cycle.
 
I used exhaust brakes on HGV's decades ago with varying degrees of success, depending on the veh. manuf.
You need a large piston surface area & relatively high engine revs for an EB to be effective.
 
Just to set minds at ease i am not going to pioneer this. If someone with these engines had success, I thought it would be a novel way to help my 109" since the brakes are ever a challenge. I am not risking my motor thought. If you think a 200tdi is hard to get in the U.K. is is crazy over here. lol
 
wrickm said:
This little trailer doesn't have brakes. Upgrading the trailer is (a lot)more expensive lol
Click to expand...
How heavy is the trailer when loaded?

Honestly, I'd suggest a custom exhaust brake setup is likely going to be way more expensive than a better trailer.
 
wrickm said:
So, no. No one has put an exhaust brake on one of these lol
Click to expand...
It's just not a thing in the UK, nothing over here bar maybe some specialised plant machinery uses exhaust brakes. TBH I'm not even sure if they would be road legal without checking the regs.

Better trailer or loaded less would be the easy fix. As well as check the condition of your current brakes. Drums should work fine overall. You can also upgrade to a bigger servo (or add one if you don't have one). Also check you are getting servo assistance, the servo could crack and leak or the vaccum pump not be working.

There are also disc brake upgrades you could look at.

iirc correctly LR rate most vehicles for 750kg unbraked towing on the road. But I'm sure I've seen an off road rating too which is much lower.
 
I recon it would be worth a try, not difficult it's just a butterfly valve in the exhaust pipe
They were good on the old trucks depending, DAF were the best in the seventies with Merc the worst in my opinion
 
lynall said:
Ex brakes on trucks are are psis poor.

Jakes and retarders are on another level.
Click to expand...
The exhaust brake on my old 77 DAF 2800 would lock the back wheels unit only in the wet
Am I right in thinking a Jake brake shuts the exhaust valves ?
 
Exhaust brakes are excellent on HGV's and I personally can't see any reason why one can't be retro fitted to a Landy. I've no idea what stresses it would put on the engine, but if you do decide to give it a go, please make a post on here and keep us all updated. Would love to see it to be honest.
 
I have been doing some preliminary research and there are some Isuzu vacuum operated units that look promising. Again, I doubt I will move forward but learning about things tends to be helpful one way or the other.
 
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