Vehicle & Technical > Defender

does fitting a larger intercooler to a 300tdi defender really work.

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Saffy:

--- Quote from: Rasbo on June 02, 2008, 22:07:04 ---yes they make a real increase in performance.  In a diesel engine, for optimal performance you want the air as cold as you can, so the bigger your intercooler the cooler your air/exhaust gas the more power you'll get. much of this is due to the fact air gets denser as the temp decreases. also adding a forced air intake and a fine meshed airfilter will get you a few bhp, best 'ram air' for a 4x4 is prob a safari snokal as it fets the higher cooler air agin increasing performance and economy

andy

--- End quote ---

heh almost word perfect manufacturer advert for intercooler, safari and K&N

Rasbo:
 :lol: :lol: :lol:

Suvvey:
*****BUMP*****
Does anyone know if the standard intercooler from a late Td5 is any better than that on the 300Tdi? Just that one of works' rovers just got the full chip and intercooler upgrade (over 200BHP now :shock:) and the original is now going spare :twisted:

DogVanMan:
I'm no physicist but I reckon that the snorkel will make little difference to a turbo engine - the intake is compressed by the turbo, so a little higher pressure pre-turbo might help it to spin up a bit quicker but in practice I doubt whether it will equate to more boost pressure, so it's unlikely to make more power/torque. Same number or air/fuel molecules going in per given volume = same power out, all things being equal.

Certainly when I fitted one to a standard 300tdi 90 I couldn't really tell much difference in the real world. Perhaps any small improvement was counteracted by the small increase in aerodynamic drag? If you want to go wading or driving across the desert, by all means fit a snorkel but for performance improvements, save your money - That's half the cost of your intercooler found! (And there's no way that you wouldn't be able to tell the difference with a good intercooler and the fuel pump mods done by someone who knows)

On the subject of 'someone who knows', have a word with Porny on here, he's good ;-)

G

davidlandy:
Also have you seen how small the aperature is on a 300tdi air intake just behind the wing...its tiny, at least a third of the size of intake on the safari.

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