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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 02-28-2008, 08:58 AM   #121
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Everyone talks about the head being so restrictive on NA KAs. Has anyone considered trying to swap heads with other nissan four cylinder engines? I'm not sure if any of these would come close to fitting the KA without MAJOR work, but it's worth looking into at least. I googled but I couldn't find anything with the head "footprints" to be compared to the KA's "footprint". Hell, even head gaskets comparison might be enough to get a general idea. I may look more into this later today if I have more time.

If this idea is completely stupid, then please forgive me. Please note that NO I am not a machinist, NO I do NOT know how much work it would be to modify heads, so please don't lecture me on being ignorant, but please provide some sort of indication to the degree to which the heads do not match.

Some Nissan four cylinder heads that should be considered:

SR20DE
SR20VE (I've heard this head flows rediculously well)
FJ series
CA series
CG series
QR seies

Yes I'm aware that most of these heads probably flow much worse than the stock KA.

edit: Yes I realize that if a head does match and does flow better, then the next problem would be the timing chain, and cover, but one step at a time.
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Old 03-01-2008, 01:17 AM   #122
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^From what I've read is that the KA head was the best flowing of it's time???? Not sure it;s true but there is a possibility.


Perhaps the Newer Frontier Heads were improved?
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Old 03-13-2008, 06:14 PM   #123
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KA

Quote:
Originally Posted by swayray View Post
what kind of dyno was that on?

because on a dyno pack a 92 ka24de w/ just an injen intake w/ extension, hotshot headers, hi-flow cat... nvidia catback (no resonator) jwt ecu managed to make 146 whp...
Ahem Ray, I know you posted this awhile ago but it was 153.1 hp and 164.6tq just fyi. These figures were from the fly wheel.

Had to clear that up, hehe.
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Old 03-15-2008, 05:47 PM   #124
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Ahem Ray, I know you posted this awhile ago but it was 153.1 hp and 164.6tq just fyi. These figures were from the fly wheel.

Had to clear that up, hehe.
So you dynoed the motor out of the car?

I think you mean at the hubs.
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Old 04-13-2008, 11:20 PM   #125
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do anyone kno how much it would cost to get valve reliefs milled into the sohc pistons??
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Old 04-13-2008, 11:21 PM   #126
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is anyone runnin je 11:0:1 pistons yet??
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Old 04-14-2008, 12:06 AM   #127
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^Thats news to me, I thought the Wiseco 10.5:1's were the highest.
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Old 04-14-2008, 02:02 PM   #128
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yea they ben out for a min...i seen them one thier site..i was bout to order a set
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Old 06-29-2008, 07:11 AM   #129
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any updates on this oh so sexy thread or it all went fail?
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Old 06-29-2008, 11:20 PM   #130
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whats the most hp you can get with a NA de
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Old 06-30-2008, 10:27 PM   #131
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no one really knows yet..but we'll kno very soon if people dont loose hope jus waitin on other people..my project 1 is already under way..
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Old 06-30-2008, 10:35 PM   #132
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90 pistons,eagle rods,xcessive intake mani,n60 maf,light flywheel,stge2 clutch,shaft masters aluminum drive shaft(free shippin i might add so check'em out),ported exhaust side of head,obx headers and pulley kit(crank pulley,power steerin,water pump,and alt),248x2 cams,and knifed crank..and maybe a retuned stock ecu from EFI Specialist (Powered by CubeCart)..lookin 2 put out atleast 200 to the wheels..if not i have a project 2 that will consist on 11:0:1 je pistons n head work and bigger cams..so come on people stop half a**in and let get this N/A thing goin

Last edited by project-D180; 06-30-2008 at 10:36 PM.. Reason: addin to it
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Old 07-12-2008, 09:17 PM   #133
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will a ka24e crank fit in my ka24de

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Old 07-13-2008, 10:20 AM   #134
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block is done..hahahaha!!!head is comin soon...
do i really need this or can i take it off and plug the line???
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Old 07-13-2008, 10:47 AM   #135
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^^^I would keep it. Others may say you can remove it. I'm not sure on nissans but other cars like hondas, the Evap purge kicks in on decel (55mph-15mph). Suprisingly in warmer climates quite a bit of fuel is evaporated if the EVAP isnt used, this container contraps it, and vacuums the vapors into the IM to be burned, which has 0 affect on performance- however more possible throttle response from sealing a port on the VC. You may notice a slight decrease in your MPG if removed.

If the car is tracked only, rip it out. Just my 02
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Old 07-14-2008, 09:24 PM   #136
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ight thanks for the tid bit...should be droppin it in soon ...will be postin pics and info soon
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Old 07-15-2008, 03:52 PM   #137
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Wait I see your purge lines are disconnected? were you always running like that?
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Old 07-16-2008, 09:03 PM   #138
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that pic was jus for reference ..that wasnt a pic of my car..im in da middle of rebuild my car
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Old 07-16-2008, 10:15 PM   #139
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motor is all done jus gotta put on assessories.. will be postin pics soon
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Old 08-21-2008, 06:46 AM   #140
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notch your heads!
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Old 09-05-2008, 06:57 PM   #141
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Quote:
Originally Posted by project-D180 View Post
90 pistons,eagle rods,xcessive intake mani,n60 maf,light flywheel,stge2 clutch,shaft masters aluminum drive shaft(free shippin i might add so check'em out),ported exhaust side of head,obx headers and pulley kit(crank pulley,power steerin,water pump,and alt),248x2 cams,and knifed crank..and maybe a retuned stock ecu from EFI Specialist (Powered by CubeCart)..lookin 2 put out atleast 200 to the wheels..if not i have a project 2 that will consist on 11:0:1 je pistons n head work and bigger cams..so come on people stop half a**in and let get this N/A thing goin
factory cams are fail. Crower V3 > Jwt/pdm > Crower V2
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Old 09-28-2008, 01:04 PM   #142
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you need headwork, valve springs will probably fuck u over... go for HKS ca18det valve springs
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Old 09-28-2008, 09:43 PM   #143
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up and runnin withh 90 pistons(10.5.1 i think i could be wrong)..sounds strong..jus gotta get it broken in
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Old 10-10-2008, 09:36 AM   #144
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theres a couple ka stroker kits out there now a days for those who want it..crower makes a 2.6L kit for a little less than 3k
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Old 10-11-2008, 10:15 PM   #145
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what u guys think rom tune or afc??

Last edited by project-D180; 10-11-2008 at 10:16 PM.. Reason: my b miss spelled
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Old 10-12-2008, 01:22 AM   #146
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just get a JWT tune. it's not that much, and they'll retune it for you if you change something.

has anyone seen the newest n/a KA record?

217whp N/A KA = sickness

new itb KA24DE numbers - FreshAlloy.com Forums
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Old 10-12-2008, 08:20 AM   #147
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get dat @#%$% out of here.woorrd.awesome
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Old 10-12-2008, 08:32 AM   #148
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well im aimin for that 200 spot.cross my fingers....]
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Old 10-12-2008, 08:34 AM   #149
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...woould bc 264's work good using 90 e pistons with out bending the vavles??plannin on gettin those along with bc vavle spring kit..

Last edited by project-D180; 11-13-2008 at 10:05 PM.. Reason: miss spelled a couple words
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Old 11-13-2008, 10:06 PM   #150
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?? any one??
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