popi-dude wrote:
my goal is to get about 200-250 hp to the crank.. so i could only buy a t3 and drop the whole thing into the enginebay ?
so if i understood, the weak point of the KA is the pistons ??how much does it cost to change them 2-300 bucks ?
would a 250 hp set up with new pistons would be fine ? or i'd have to change valves and some other internals ???
200-250 at the crank is easily attainable. Buy the T3, a manifold, downpipe, Rising Rate Fuel Pressure Regulator, Walbro fuel pump (255 liters per hour). You could probably get to that power level without even using an intercooler, but it is a good investment (along with a blow off valve).
You can make your power goals without breaking into the motor at all. Perform the mods I was telling you about, run about 7 PSI, turn the timing back roughly 1 degree and run an 8:1 RRFPR. That ought to do it for you, but beware of the boost bug. You will want to turn the boost up, but PLEASE refrain until you upgrade your fuel system.
Forged pistons will run you roughly $400, and changing them out varies. You could do it yourself, but figure paying someone to do it might cost you an additional $400 ish? Honestly I don't know, I've never had anyone just change the pistons.
megaderk wrote:whats the difference between the KA and CA engines?
and what was the HP for the stocl KA24E?
Well, there are many difference between the 2 motors, Bore, Stroke, and with that, displacement. The CA is a 1.8 liter, and the KA series is a 2.4 liter. The KA24E produces around 145 HP, and the KA24DE produces 155HP.
jakums wrote:ok so i posted something on turboing my ka24e motor. looking to make 300-350 hp im also thinking on doing forged internals is this a good set up
cp 8.0 pistons 500$turbonetics t3/t4 50 turbo 745$universal turbo piping includes intercooler and blow off valve 250$APEXi SAFC-II piggyback 400$wideband plx m300 350$jdm ka24de turbo manifold 150$greddy B spec 2 boost controller 120$tial 38.mm wastegate 305$
is that any good? Is there any was i could save a lil more money?
Modified by jakums at 2:42 PM 9/22/2008
You can go with slightly higher compression pistons. 8:1 is pretty low. I would go with 9:1 as long as premium is readily available for you. Good choice on the turbo. You don't have to get a wideband if you don't want. You could save some cash if you get rid of the wideband and the SAFC in favor of a tuned ECU. E-mance ECUs is operated by a member on this forum and has very good prices on tuned ECUs. You said you have a KA24E, but you listed a KA24DE manifold. That will not work, so you will have to find something else (and $150 is very cheap for a manifold, unless it is used).Don't forget to upgrade your fuel system. You will need a Walbro fuel pump and probably around 550cc injectors. Also, at those power levels you have just broken into the zone where you will need a 300zx (N62) MAF. You will also need an oil line feed and return kit.