Engine modding, Help appreciated

[nlsolja123]

Ok i have a straight neck kF-ze, Running good and using the Correct ecu je50

Mods as of now....

3 1/2 - 3 3/4 ram air intake
Millenia Curveneck
Millenia T/b
Themolic-Spacers
Pacesetter headers
External HEi and RX7 coil pack
Ngk wires... ngk vpowers 5 or 6 ill have to check the plug number
UDP
Millenia 110 amp Alternator
A/c and ps still working

AFPR But not installed


I have a Nitrous kit, its a full wet kit and its a high dollar setup. capable to flow a 400 hp shot...lol


What mods are left???????

Im wonderin if i should Upgrade cams to KLDE OR KLZE cams i have the kf01, they kinda reak..... i was also lookin at a shaft style supercharger from probetalk. it ran 4 psi max on a switch.


Im also wanting small info but this is for knowing only not really a big concern......
I know the kf is the same stroke as a k8 just a higher compression and a little bit bigger bore,
Are the cranks a huge differnece in the k8, kf and kl ?
Can a k8/kf use kl rods
Would a k8/kf rod accept a kl piston?

[wytbishop]

Ok...first to my knowledge Thenolic is not a word. Phenolic spacers are made of a material called Phenolite, a material which is both electrically and thermally non-conductive. I just don't want the other kids making fun of you.

AS far as KF vs. KKL...I dont' know much about the KF but I would be surprised if the rods and crank are the same...and a 2.5L piston will not fit in a 2.0L block.

[PATDIESEL]

more power is not hard to figure out, but I would not waste money on electric superchargers and that kind of crap. start a turbo build or buy another motor and start collecting parts to "build" it up. The real power is expensive, so if you do not have that kind of money then work on your driver skills. That is where 90% of your speed is going to come from anyway. Unless you do not race and then driver skill does not mean much so you should just save your money...

[Mnemonic]

you want kl31 cams, you want to look into upgrading to megasquirt. 2.25" exhaust back will get you some gains. Lighten flywheel will bump up your whp a hair.

swapping the cranks not going to do anything for you.

If you're only looking for 4psi, you should just get the ebay turbo kit, you could run 5psi easy, probably 7-8 psi safely with megasquirt.
I can help you get into the really dirty stuff if you're interested in making power, but its going to be costly as its all pretty much custom...
Just the head work I had done to mine was about 3k @ sunbelt performance up in buford.


with the extra bolt ons, cams, and megasquirt, you should be able to reach around 170-180whp *being that the base dyno for a kfze is about 140whp*

on turbo with all the bolt ons, megasquirt etc, you're probably looking at about 230whp on 5psi. (loose number)

[nlsolja123]

Pat sorry if i was misleading when i ment a shaft style suprcharger on a switch its not the electric pos's from ebay.
its a supercharger thats clutched like a a/c compressor.


And i have one turbo car already that i've built, from the grounbd up myself, its the car that i'd like to take autocrossing but until then i have curvy mountain roads to satisfy me


and Mnemonic would a supercharger be decent compared to a turbo on this motor if all i do is install cams? im not wanting to do the valves or porting, BUT i wouldnt mind bolting 2.5 head on

[Mnemonic]

well you'll need a custom head gasket to do a 2.5 head on a 2.0 as they don't match up 100%

supercharger would yield similar power, but the down side is there is no bolt on supercharger setup for the mx-3. So you would have the same amount of power for more money... for 5 psi there is nothing wrong with an ebay turbo setup and with a small turbo you're likely to spool from the get go anyway...

[93vtecklr]

Wow, am I the first to say swap in a klze? Respect for going the kf route, however.

[nlsolja123]

although i do agree a klze is a simple solution, but its only what around 30hp/30tq

heres the wikipedia comparison

kf 160-170hp , kl is 190-200hp.
130-145tq 160-170tq

and i have a freshly swapped kf so, thats kinda pointless to swap again,
I choose the kf due to it being 175$ usd and the klze was around 800.

What is the recommended use a turbo, or use my nitrous kit i have already? I could always sell the nitrous,,,?????

[kiwimx3]

Sell the Nos kit and build a turbosetup..

The k8 has the smallest journals of all the K series cranks, and will not interchange into KL / KF blocks
a low psi setup and a aftermarket fuel management system and a good tune your away laughing..

I have my book of figures somewhere around here...

You don't need to crack the block open till you really start to make HP and then you need to do the
toyota gearbox conversion as the gearbox is the weak link in the whole chain..

[hgallegos915]

although i do agree a klze is a simple solution, but its only what around 30hp/30tq

heres the wikipedia comparison

kf 160-170hp , kl is 190-200hp.
130-145tq 160-170tq

and i have a freshly swapped kf so, thats kinda pointless to swap again,
I choose the kf due to it being 175$ usd and the klze was around 800.

What is the recommended use a turbo, or use my nitrous kit i have already? I could always sell the nitrous,,,?????

I dont know about the kf.... even a new kf wont be as fast as a klze or a modded klde. The hp is there. but the torque is not.


going from the k8 to the kf felt like a different car, but going from the kf to the ze felt like a total different monster.... but going from n/a ze to a turbo ze was like comparing the monkey from the movie congo and king kong being the bigger difference..