Master
Quite a while ago, I pulled out the air intake ducting on my Td5 Defender to properly seal it. I was quite stunned how convoluted and especially how restrictive it was. The narrowest section of it turns out to be just two inches at the water trap y-piece.
IMG_3777.jpgIMG_3776.jpg
I was never convinced that the factory intake would seal properly and therefore, I decided last week to replace it with a one piece 3” flexible hose from the snorkel to the air filter box. I used a 2 ply flexible silicone hose (1m) with an integrated metal coil. It is a very tight fit and I had to protect some areas from rubbing with some 4mm rubber pieces (at the edge of the ABS modulator bracket and underneath the steering rod). I also decided to put a heat shield on where it is close to the motor.
I always suspected that the factory air intake would severely restrict the engine performance, especially with highly tuned engines. My expectation was to get a little bit more power/torque in the low rpms. This expectation didn’t quite materialise, but the engine pulls noticeably better from 1700 rpm onwards and I am happy with the outcome.
Fossicker
SupporterI'm in the same process right now after discovering the factory hoses were split so the snorkel was good for F.A
Do you have any photo's of the pipe installed? I was thinking along the lines of the same thing but it didn't look like it would have the clearance under the steering shaft?
Moderator
Did the same on a Tdi fifteen years ago, including cutting off the restrictive neck on the Safari snorkel.
The bum dyno didn't detect any change, but then the fuel was turned up, a 3" exhaust made and installed, etc. so I'd reckon it had to help.
Master
I’ll give it a go. Problem is the spaces you can’t even see.Originally Posted by Flexo
Master
The ABS modulator and its plumbing make it really difficult. What kind of pipe did you use?
Moderator
No ABS on a Tdi!
It makes it really straight forward.
Master
I wish it was possible to legally de-ABS a car in NSW. The Wabco system in our trucks is crap and dangerous in some instances.No ABS on a Tdi!
It makes it really straight forward.
Moderator
Really?
In what way?
I'm driving a D2 these days and find the ABS pretty good, and much better than the work BT50's and Hilux's.
The ABS programming is probably different, the TC is a lot more refined in the Disco compared to a Deefer.
Master
On road, I think the ABS /TC is not too bad in general, but I think that the software has a very poor or non-existent exception handling.
An intermittent issue made the TC go crazy in the middle of the Harbour Bridge; it applied the brakes randomly. At the time, the car was new to me and I didn't know where the ABS fuse was, but I made it to the offramp. Lesson learnt: regularly check for fault codes and fix sensor issues immediately.
On another occasion, I drove a very steep downhill section (30-35 degrees) and I had to stand on the brake pedal really hard.
Without warning, the ABS let the brakes go completely and I was lucky that I was in 1st low which prevented the truck from acceleration downhill. I read that this was a common problem with the early ABS Discos, but did not expect to come across in a 2005 model Defender. Not a good experience.
Last edited by jbe; 4th September 2018 at 05:48 AM. Reason: spelling errors
Master
I did this recently while doing a complete engine swap in my TD5. I also cut out the vortex thing and opened the pipe in the air box
It's the old problem of needing an extra joint in your arm, but unsurprisingly a lot easier without the engine in!
I just used dynamat on the areas affected by the steering shaft, cause it's stick on and I can be a bit lazy at times. The metal top should increase longevity as well.
No idea about the bum dyno, cause I installed an allisport intercooler at the same time.
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