How to increase power?

[Lumbering Jack]

This keeps cropping up in my head quite a lot just lately and I either need telling its a stupid idea or kicking into life to do something about it  :twisted:

I'd quite like to take out the 300tdi that's in it and replace with a 3.9efi with lpg and auto box from and RRC.  I've heard of it done before but not recently and don't know just how much work is involved.  I'd probably have a whole rrc to use as donor so all the bits would be there.   I prefer the idea of the 3.5 on carbs for simplicity to work on but the 130 is a fair weight loaded up and with the trailer on so thinking every little helps  :-k

Anyone done anything similar?

Planning on putting a 110 hi cap body on to replace the quadtech body and thinking the lpg tank can fit in the gap between the body and the back of the cab.

So..........what's your thoughts guys?

[L90OOK]

 [-X Personally I think you are mad  :lol: 
If you want more power fit a large intercooler, tweak the pump & up the turbo boost.  You will get somewhere near 150bhp & a good amount of torque. 
For a better exhaust note fit a straight through pipe  :twisted:
Run it on a mix of 50/50 derv/veg oil in winter months & upto 100% veg oil in the summer months.

[Sabo]

Listen to this.  I had a 2.5 na diesel in a 1986 110 CSW, 6 years ago I put a 3.5 carb in with lt77 box, 2 years ago I replaced the engine with another 3.5 which I rebuilt, both times I ran on gas.  Last year I put in 200tdi! 
A V8 sounds wonderful and has a lot of power until you hit WATER, also it burns a hole in your pocket especially when you start adding things like sports ignition etc etc.
So I took mine out and put a good old NOISY 200tdi in it which I am sticking with, also upgraded the intercooler, put a straight through pipe on and it goes on!
If after all this you want a V8 I have one still in one piece since last used - 3.5ltr, also heard 3.9 have a tendency to heat up and crack heads but I'm sure others will tell you different.
Have Fun - I did.

[Range Rover Blues]

I keep hearing this guff about V8s and water.  Drown a TDi and it's goodnight vienna, you'll be lucky if the rods don't come through the block.  Personally I don't go wading in anything above the sills as I don't like having to change wheel bearings every fortnight.

Anyway, a V8 with a missfire is still a V7 ;)

The V8 on LPG is a cracking engine, quieter and much smoother than a TDi.  Looked after they run reliably for a similar mileage to a TDi too.

I've heard about cracked blocks on 3.9s too.  I've never seen one, but I've heard........

That said you are looking at a lot of work.  If the power gains are there to be had form the TDi I'd start by tweaking that and see if it fits the bill.  A heavily loaded 130 will benifit from the torque of the TDi and the appropriate gearbox has a lower 1st than the equivelent V8 'box to help with hill starts.  That makes the TDi a nice towcar (though when the trailer tips the scales at 2 tonne I prefer an auto anyway).

Also with the price of fuel as it is a TDi will be more economical.  At the moment we're running the TDi rather than the 3.9 on LPG, though I'm having difficulties with the supply of Biodiesel blocking fuel filters.

[Lumbering Jack]

Thanks for the replies guys, just what I needed (a bit of sense talked into me  8-[ )

Think I was getting carried away with V8 fever.

150bhp out of the 300 sounds good to me - just a case of getting around to it.  Do like the idea with the exhaust too, does it make much of a difference when done with the other mods or is it more for the sound?

running 50/50 veg/diesel whenever I can - does seem to go better than on neat diesel  :dance:

how easy would it be to fit an auto box to the defender (and what would it come off of?  :-k )

[ChrisV8]

You could of course take out the teeny LR engine and put in a GM 5.7 V8 diesel out of a Hummer etc. !!!! You get the nice noise and humungous torque, but they eat gearboxes unless you go auto with lots of fabrication.

But also other less taxing Jappy diesels will give more power, my Nissan sounds really nice when working hard and has a lot of torque, the Mazda 3.5 td is also very good towing.

You just take your choice !

[clairedave]

when you put veg oil in with diesel do you add anythink else ,does it block filter  :?

[Range Rover Blues]

150bhp out of the 300 sounds good to me -

Even better when you think how that stacks u against the V8s 165 ish BHP, becasue the TDi doesn't rev as hard that means more useable power.

That said on the motorway I'd rather be in the V8, I just prefer paying for the TDi

[L90OOK]

when you put veg oil in with diesel do you add anythink else ,does it block filter  :?

No I don't add anything & yes it will block the filter after a couple of thousand miles as the veg oil cleans the tank & lines. 

[Disco Matt]

Regarding the straight through pipe, mine has one. It does make it sound good and I think there's a slight improvement - more a case of it being more flexible at low revs than a power increase. Certainly if you want 150bhp from a 300 TDI you'll need to fit a bigger intercooler, lose the cat (if it has one) and tweak the fuel pump too.

Blanking off the EGR valve isn't a bad idea either...

[Lumbering Jack]

Thanks for the help again guys,

Had heard the 3.5 mazda was a good lump, haven't seen many about though.  before I bought the 130 i nearly bought an old ex military chevy pickup with a 6.2 gmc diesel in it but no-one would insure it sensibly  [-X  Friedn of mine has one and it doesn't even know it's got a 3 tonne compressor behind it up hills  :twisted:

would it still mot without a cat or would I need to put it back on for the test?

Been on Allisport's website but it's under re-construction at the mo - anyone know what sort of money one of their intercoolers is? 

I've not had any probs as yet with the veg, changed filter early on and have a spare ready for if I need it

[Porny]

Thanks for the help again guys,

Had heard the 3.5 mazda was a good lump, haven't seen many about though.  before I bought the 130 i nearly bought an old ex military chevy pickup with a 6.2 gmc diesel in it but no-one would insure it sensibly  [-X  Friedn of mine has one and it doesn't even know it's got a 3 tonne compressor behind it up hills  :twisted:

would it still mot without a cat or would I need to put it back on for the test?

Been on Allisport's website but it's under re-construction at the mo - anyone know what sort of money one of their intercoolers is? 

I've not had any probs as yet with the veg, changed filter early on and have a spare ready for if I need it

A diesel does not require an CAT for an MOT.... it also doesn't need the EGR set-up.

The current 2008 MOT system for Diesel (i.e. compression ignition) vehicles only requires an Opacity test, (i.e. smoke) and not an actual emissions test as per a petrol (spark ignition engine).
 
A catalytic converter does not actively effect smoke….  This differs from a diesel particulate filter  (which is also exempt from testing at the current time)

The only requirement is that the max smoke value for a turbo charged diesel is a mean (of the last 3 smoke tests) not exceeding  3.00m-1.  For a initial 'fast pass' the smoke value must be below 1.50m-1.

In simple terms.... the only reason a modern diesel have CATs and EGR (along with other things) is to enable a manufacturer to meet the current EU legislation (for example EU4/5), but once a vehicle model has been type approved, and sold to the customer...  the customer is technically free to do what they like regarding emissions, as long as they meet the requirements of their country, which in the UK is just the MOT test.

This can be confirmed by reading http://www.motuk.co.uk/manual_740.htm compared to http://www.motuk.co.uk/manual_730.htm


Ian