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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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02-28-2008, 08:58 AM | #121 |
Zilvia Junkie
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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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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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03-13-2008, 06:14 PM | #123 | |
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Had to clear that up, hehe. |
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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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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 |
07-13-2008, 10:47 AM | #135 |
Zilvia FREAK!
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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 |
09-05-2008, 06:57 PM | #141 | |
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10-12-2008, 01:22 AM | #146 |
Zilvia Member
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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 |
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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