ka24de w/ ka24e pistons
ka24de w/ ka24e pistons
i've heard that you can pretty much drop in ka24e pistons into a ka24de, but the part i wasent sure about was the outcome on compression. ive heard its about 12:1. another thing im wondering, if i do this, is it drop in, or do i need to do some boring? also, do i need i/h/e for this, i figure since im changeing the compression, i might need that with more air flowing. last but not least, can i run this on pump gas, i.e. 93 oct.?thanks
you'd probably want to go the other way around, as far as I know KA24E pistons have lower compression, than KA24DE pistons. HCI says that you can swap KA24E pistons for KA24DE pistons and get a higher compression ratio. so, It would seem that if you swap to the KA24E pistons it would lower your compression, not sure, so check it out further 
just my input.
just my input.That's HCI, Hot Compact Imports, Volume 5, Number 1, January 2004 issue, 150 Quick & Easy Tuner TECH Tips.
Tech Tip #146 Piston Swap"Cross-breeding occurs in all enthusiast groups. For Nissan 240sx fans, you can take the KA24de pistons and put them in a KA24E for an increase in Combustion; Type-R pistons in GS-R engines and so on. Going with a high-compression piston will give you a mild bump in performance, but check piston-to-valve clearance."
I'd check with http://www.HCIMAGAZINE.com for further info.
Tech Tip #146 Piston Swap"Cross-breeding occurs in all enthusiast groups. For Nissan 240sx fans, you can take the KA24de pistons and put them in a KA24E for an increase in Combustion; Type-R pistons in GS-R engines and so on. Going with a high-compression piston will give you a mild bump in performance, but check piston-to-valve clearance."
I'd check with http://www.HCIMAGAZINE.com for further info.
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TrunkMonkey
- Posts: 3190
- Joined: Sun Aug 04, 2002 7:48 am
- Car: 2000 Lincoln Navigator
you know...if i didn't have a bald head, i'd pull my hair out right about now.
if you listen to HCI and put DE pistons in an E, you'll drop your compression so low that even miss daisy would get pissed off at the snail's pace you'd be moving.
put E pistons in the DE, you'll raise your compression to 11.1:1.
from now until the end of eternity, HCI has been banned from these forums.
-demetrius
if you listen to HCI and put DE pistons in an E, you'll drop your compression so low that even miss daisy would get pissed off at the snail's pace you'd be moving.
put E pistons in the DE, you'll raise your compression to 11.1:1.
from now until the end of eternity, HCI has been banned from these forums.
-demetrius
I beleive there are actually two different kaE pistons. Early 89 pistons raise the compression to 11.5:1 and as demcj said, the others raise it to 11.1:1 With proper fuel tuning i believe 11.1:1 would be ok running premium. Additional mods aren't *necessary* but i mean, if you are doing all this work to make it go faster, more performance parts will end up on your car eventually.
I am also interested in details about this swap though, as i have been planning it since i finished my sr swap. I believe that the block doesnt need honing, but i am not sure which rods and crank to use...
I am also interested in details about this swap though, as i have been planning it since i finished my sr swap. I believe that the block doesnt need honing, but i am not sure which rods and crank to use...
auto180sx wrote:can you run pump gas on a 11:1 cr? (93 oct) do i need supporting mods, i.e. i/h/e. is this drop in or do i need to do some boring or anything else to get them to work?
You should consider the I/H/E before upping the compression in the engine since those are "bolt ons" and therefore much easier to install.
Also, yes, you can easily run 11.5:1 on 93 octane.....hell people here in Cali do it on 91 octane (the ECU doesn't even retard timing yet either!)
I have seen people run Hondas on stock ECUs up to 12.5:1 on 93 octane fuel.