Thread: Dynotard/Jakebraking a td5

Hi Blknight.
NO,BUT.
You wont get a "jake brake" conversion,that involves as you suggest a valve operated brake system.
HOWEVER,you can if its actually worth messing with,fit a japper"exhaust brake".Should be cheep enough from a wrecker,all 4 tonne upwards jappercrapper commercials run them.It involves a flap that closes off the exhaust pipe,the only reason you would even consider it is if as you say you want to tow HEAPS,not much use on the vehicles at work that have them But thats my opinion.
Perhaps see if you can test drive a Canter style truck(even if you need to pretend you want to buy one) and see if the exhaust brake is up to your expectations.
Andrew

I know the ones you mean and thats pretty much what Im after. Ive grown up driving the gearbox and prefer wherever possable to control vehicle speed by means of the engine and the TX, Ive had a few nasty experiences in older vehicles driven by (cant belive im going to say this) younger drivers who have ridden the brakes to fade point and had nothing left.

The Td5 is good enough with just the vehicle but load it up and add 2t of trailer and it overruns on the down grades in second gear Id hate to think about it with a full 4t behind it.

Like dad told me when he was teaching me to drive "Slow down early, you get more time to react, save fuel and stress, your in the right gear to move off with then if it goes pear shaped you still have a full compliment of brakes to work with." This was in Series II's, III's and International 6x6's

I know where you are coming from.The TD5 manual has bugger all exhaust braking,probably due to a very heavy flywheel,as shown with a BIG turbo lag problem and huge tourque for the engine size.
Andrew

the Td5 engine actually cuts off injection on overrun to try and compensate for this......

Originally Posted by DEFENDERZOOK

the Td5 engine actually cuts off injection on overrun to try and compensate for this......

Because of the govenor on 99.9% of diesels if you get em spinning fast enough they all cut injection. When you stomp the loud pedal or yank the hand throttle your not directly influencing the rack, or spill ports your having a "tug-of-war" with the govenors fly weights.

When engine speed and therefore govenor speed is low the loud pedal wins and the engine gets more fuel conversely when the engine overspeeds the flyweights win and cut back the fuel.

The only "direct" control you have is the fuel cut off which manually forces the rack to the zero fuel position bypassing all the other gumpfh in the injector pump... Td5's just do it electronically.

Originally Posted by Blknight.aus

Because of the govenor on 99.9% of diesels if you get em spinning fast enough they all cut injection. When you stomp the loud pedal or yank the hand throttle your not directly influencing the rack, or spill ports your having a "tug-of-war" with the govenors fly weights.

When engine speed and therefore govenor speed is low the loud pedal wins and the engine gets more fuel conversely when the engine overspeeds the flyweights win and cut back the fuel.

The only "direct" control you have is the fuel cut off which manually forces the rack to the zero fuel position bypassing all the other gumpfh in the injector pump... Td5's just do it electronically.

Pretty good, but TD5s don't have a rack, or a fuel pump as such...

it would just about be impossible to fit a jake brake to the TD5 and the exhaust brake is a cheap and easy fit but there is another option electric retardation,this fits on the drive shaft or output shaft better than the above methods do a goggle search there should be kits out there

There seems to be some confusion here. AFAIK an Exhaust brake is also a Jake Brake - if it is made by Jacobs.

http://www.jakebrake.com/products/ld-exhaust.php

So it would be easy to fit a light duty Jake Brake (exhaust brake) to a TD5.