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RhysMain111

New Member
Next year i am planning to take a 2004 defender 90 td5 and modify it into my dream land rover.

  • I am planning on putting a 2 inch lift kit with heavy duty dampers, and new radius and trailing arms
  • Then remove the back box from the exhaust the route the exhaust up through the cap and then split it into 2 aftermarket mufflers and out of where the number plate would normally be.
  • Planning on putting a raptor dash inside with a cb radio and a normal stereo headunit.
  • I want to mount the current defender bonet on it " the one the bump", can this be done ?
  • And then chip it to get the maximum about of power out of it as possible
  • Also i will do all the usual stuff, big tryres, whinch bumber, lights
Thanks RhysMain
 
Sounds like a nightmare!

Exhaust routed though the interior, lifted, big tyres, lots of extra weight and then "the maximum about (amount?) of power out of it as possible".

Remind me to steer clear when you are about.
 
Been reading too many "pimp my ride" mags methinks. Cant see the MOT man liking the exhaust running through the cab. Also why two tail pipes? Reminds me of the boy racers round my way with two ridiculously large exhaust tail pipes (one each side and some nearly 6 inches in diameter) on their Corsas or Citroens but only one is dirty as the other is a dummy which is supposed to make me think the 1.2L motor is super quick.
 
I don't see the issue, he's only doing the same thing we all do.

An answer to your question is yes, you can fit a puma bonnet on an older defender but you can also get plastic ones that are a lot lighter. I've never tried one of those though so I couldn't recommend one.

What I will say is do not put the exhaust through the cab. For a start it will get very hot. I would say if you don't mind twin pipes, put it through the side inside the wheel arch. If not you could probably put it out of the back like you wanted but it would take a lot more work. The wheel arch goes all the way to the back so it would still have to go through.
 
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Hey yeh, the double exhaust will not look boy racers style as the majoirty of it will be inside the cab and will be wrapped in the heat wrap and then also sectioned off using sheetmetal so no one can actually touch the pipes, and this will pass the mot, my mate has a remote turbo in the boot of his witht he hot exhuast pipe full accesible, and it sailed through its mot.

Khaos thanks for the information about the bonnet i will research this,
Also i am doing this because i tow and off road, and just do alot of stuff in the country, so why not make my land rover what i want, especially when it is so easy
 
RhysMain111 said:
Next year i am planning to take a 2004 defender 90 td5 and modify it into my dream land rover.

  • I am planning on putting a 2 inch lift kit with heavy duty dampers, and new radius and trailing arms
  • Then remove the back box from the exhaust the route the exhaust up through the cap and then split it into 2 aftermarket mufflers and out of where the number plate would normally be.
  • Planning on putting a raptor dash inside with a cb radio and a normal stereo headunit.
  • I want to mount the current defender bonet on it " the one the bump", can this be done ?
  • And then chip it to get the maximum about of power out of it as possible
  • Also i will do all the usual stuff, big tryres, whinch bumber, lights
Thanks RhysMain
Click to expand...

Everything there sounds great, I'm sure it will look like a beast. :)

I can only see one issue though, with the exhaust mods you plan.

Exhausts are tuned by OEMs to make the most out of an engine. The intake and exhaust systems are designed and finely tuned to compliment the cam arrangement so as to deliver the power or torque requirements needed by the vehicle. If you change it (in any way at all) you are very likely to have a negative impact on the power and torque curves it delivers. All the chipping in the world and you'll be lucky to get back to the performance it currently has.

You really have to consider whether you're after a performance increase or cosmetic looks. The two are not going to go hand in hand. And the fact that you're talking about a defender, you've got to question how much power you want from it. If you make it fast, it's gonna handle like a bucket at speed with a 2 inch lift.

Whatever you do do to it though, good luck with it, and I'd like to see some pics. :)
 
RhysMain111 said:
my mate has a remote turbo in the boot of his witht he hot exhuast pipe full accesible, and it sailed through its mot.
Click to expand...

Why the turbo in the boot?
Just be careful running exhaust in cab. It not recommended for your own safety. the heat is the least important issue. Its more if it develops an exhaust leak, you may never return from your drive.
 
mundungus said:
Exhausts are tuned by OEMs to make the most out of an engine. The intake and exhaust systems are designed and finely tuned to compliment the cam arrangement so as to deliver the power or torque requirements needed by the vehicle. If you change it (in any way at all) you are very likely to have a negative impact on the power and torque curves it delivers. All the chipping in the world and you'll be lucky to get back to the performance it currently has.
Click to expand...
A diesel engine will produce more power with open exhaust ports compared to fitting an exhaust manifold. It does not make use of the scavenge principle like a petrol engine does. Obviously the TD5 has a turbo so anything after the turbo exhaust outlet, no matter what size larger bore can not improve performance because the the limiting factor is the turbo exhaust outlet. Obviously fitting a smaller bore pipe will restrict gas flow and affect the turbo spool up. So long as your exhaust is at least the same diameter as the turbo exhaust outlet then anything else is a waste of cash.
 
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