L20b-B110

hi, i'm new on the forum and new to the Ka24de.
So can u guys give me some help/ tips on building a Ka24de that would make aroung 250bhp(flywheel) with massive amounts of torque.

Car Current has a Hi Comp L20b on dellorto sidedrafts but it needs some more go. Car is a Tarmac Rally car.

thanks.

l2aine

welcome. Search the technical section for a lot of info.

BigVinnie

iTrader: (2)

Yeah man I can give you some pointers.
The KA comes with a fulley forged stroker crank, just a few mm more stroking potential than the L20b they have the same geometry "but the L20b has it's advantage of a fulley counterweighed crank", but the KA crank bearings are much larger and stronger.
The de head comes with an hydraulic bucket valvetrain the same found within the head of the CA18det. Extremely easy to work on unlike the L series that came with a rocker arm assembly.
The TB comes in 60mm diameter, and can be changed out with a 65mm, or 70mm "accufab, professional products, BBK, Edelbrock" TB found on the 86-93 ford mustang 5.0 models. Or you can port the TB up to 62mm, and get a larger butterfly.
91-94 ka24de's come with secondary butterfly's, if I were you it's not a performance gainer so rip them out, or just use the 95-98 intake mani.
91-94 has a much more aggressive cam and lobe duration than the 95-98.
91-92 KA's came with a compression of 9.5:1
93-94 KA's came with a compression of 8.6:1
95-98 KA's came with a compression of 9.5:1
If anything I would stick with the 91-94 OBD smog technology the ecu reprogramming is much easier to deal with.
95-98 has a second O2 sensor that I hate dealing with as well as the TPS to the TB.
All KADE's are set at a factory BTDC of 20 from 0.
Piston bore of the KA is 89mm, while its stroke is at 96mm.
If you are going with a standalone EMS I would recomend the AEM EMS for the 91-94 KA's it is a direct plug and play, or go with mega squirt but dealing with the independent crank sensor is a biotch.
As for me I'm piggy backing with an apexi SAFC, or you can go with an SMT6.
If you want recomendations on where to pick up a good set of forged internals you can P.M me. I have some pretty good connections.
Vince

L20b-B110

thanks Vince..will take u up on that when i actually get the ka24e in my hands.

IS this Engine really strong tho....cause i'm thinking of running about 14:1-15:1 Compression with this...

Dont think i will be using the de 16v, cause 16v engined cars have to weight more than 8v/12v cars so i will stick with the 12v head.

In terms of induction is was thinking about 45mm TB, using electromotive management.

Are cams easy to obtain for the 12v or would i have to send my cam to crower to get them regrind?

L20b-B110

jus wondering how much does a Ka24e cost in the US(Jus the bere engine). jus checking cause the ka24e we have here are out of the pathfinders that they have a rough life here.

BigVinnie

iTrader: (2)

From what I understand the Cast Iron blocks are bullet proof......
You know what I mean.......
As far as weight is concerned the DE and E heads are interchangeable and use the same block, mechanics of both stay the same. Porting on the DE is much more extensive than the e and is probably what you would wan't especially if you are going between 14:1, and 15:1 CR. Major extensive work would need to be done to the E head such as SOLID hydraulic lifters, and titanium spring, and retainers. The DE on the other hand because the valve train is so simple would only need Titanium retainers and springs. Those components would probably be easier for you to get a hold of, since where you come from the CA18det is abundant and the valve trains are the same, sounds like you are in Europe or Australia, especially since you only have the rear sump block KA pathfinders. Damn and that is some massive power... Are you looking to achieve over 300HP? I think those are higher CR ratings than your average NASPORT car that run between 11:1 and 13:1.
Sounds like you will be using alcohol to fuel it as well, unless 112octane is abundant out there.
Cams and blocks are abundant out here, most people swap the N/A's for the JDMS, CA18det, SR20DET, and RB20/25det.
I don't think you will have a problem finding a block, look on ebay and craigs list.
A couple places you should check out are www.nizzx.com ,
this company can offer you the pistons in the CR you desire in the 14:1 or 15:1.
Hybrid KA is another place you want to go cheapest parts around for the KAe and KAde. Gabe. z can make a cool cam spec that you desire, he works there and he has a KA21E high rev, using the megasquirt enginemanagement, and Individual Suzuki Throttle Boddies at 41mm a piece, he knows what you would want.
Here is that link...
www.hybridka.com/sohccustom.htm
If you are looking for a knife edged crank www.rebelloracing.com is where you will want to go.
If you have a problem looking for a block the nissan auto wreckers in rancho cordova California can ship you a used working engine........
www.ninfiniti.com, or you can go here for a complete rebuilt www.atk-engines.com/
If you have any other questions feel free to P.M me....

Vince

L20b-B110

nah...im from the Caribbean, Barbados to be exact.

I dont mean weight of the engine i mean the car. 16v cars have to weight 1lb/cc while 8v/12v weight only 0.85lb/cc(rite now the car weights 790kg so with the 16v engine i would have to add to much weight to the car.

Is the Ka21e a L2ob/Z20 block bore 2.1 using the KA head??

Thanks.. i'll look into those companies that ship engines international..dont think it will cost that much to get an engine from Cali or miami here..

ps..and yeah we have VP Racing Fuel in 112(unleaded) and 118(leaded).

BigVinnie

iTrader: (2)

I see....
I'm not shure what the specifics are on the internals of Gabes KA21e.
But looking at that no one manufactures destroker kits for the KA, I am under the assumption that, YES they are infact NAPS-Z internals.
The USDM 1981-1983 Z20s and the z22s came with the L20b crank shaft, and rods. The pin assembly and the piston deck hiegth was raised to compensate the new deck heigth of the NAPS-z/KA blocks. I know this info because I am researching and developing for my 2.2 NAPSz/KA frankenstien build that will be turbo charged.
NAPS-z blocks are great for the fact that the KA24e head is a direct bolt on, all cooling passages line up, as well as the bolt pattern. Due to the decreased volume of pistons displacement clover leaf welding is needed to the KA head unless the high cr pistons can compensate for the loss in volume.
Assembly is very easy, use the NAPS z timing chain assembly, and the NAPSz timing chain covers, as well as the naps z oil pan.
It's a great block to play with......................

L20b-B110

THe KA24e 12v head also fits the L20b block. I more leaning towards fitting the 12v head on my L20b bottom half if i can source a Z22 crank....cause the motor will be able to obtain high RPM.

12v LSeries

BigVinnie

iTrader: (2)

The coolant passages to the L20b block and the KA 12valve head do not line up correctly, there is major retro fit work that needs to be done, believe me the NAPS-z z20s, and z22s have all the internals of the L20b, if you are trying to achieve that high rev......

L20b-B110

do they have a book or Pdf file on tuning ka or Zseries Engines??

BigVinnie

iTrader: (2)

www.zeroyon.com has the entire FSM on the sohc and dohc ka's....

L20b-B110

that was quick thanks.

BigVinnie

iTrader: (2)

My MSN pages me to my phone

I also have the chiltons manual on z engines I will get the pics for you later tonight on the exploded view ohf the head and engine...

BigVinnie

iTrader: (2)

Hey L20b-B110 do you have any pics of your car? I am interested to see the project that you are working on.