hey all. I'm pretty new around here (is that an understatement?)
Anyway, my old man has picked up a '93 D21 Navara 4x4 Dual cab powered by non-other than the KA24E.
130,000km and it runs pretty good. More than enough power and torque once you're moving, but the old 2.4 suffers a bit when you try and get the ute moving from standstill. Infact, it lacks torque low down to the point where my old man has decided that he needs a bit more power from it (particularly low down in the rev range)
First thing I'm going to do for him is to remove the stock intake system which has 2 filters and tiny little intake pipe. I'm going to attempt to retrofit either a Pulsar or late model Patrol or even try and squeeze in a huge cyclonic filter from an older GQ patrol.
Cold air intake is not required because I'll be installing a snorkel as soon as I find one in the wreckers.
Anyway as you can see I've got the intake under control.
Are there any larger TB's available to improve throttle response a bit?
It currently suffers a bit of old head chatter. I believe this is the lifters as it comes from around the top of #3. Hopefully some different oil will solve this issue.
Does anyone know what sort of improvements extractors make on these motors? Do the cam re-grinds and chips you guys sell here on the forums do anything for torque?
I probably havent placed this in the correct section, but i dont really see where else it can fit haha!
Cheers!