KA24e question

[ckamc]

ok I was wondering if De forged pistons ohh like lets say Wiseco that are for the s14 ka24de's and are at 9:1 compression will fit and will be at the same compression ratio on a ka24e.

im considering going ka24et since it would save me about 700 dollars compared to going ka24det

[WDRacing]

EDITed for corrections...just read what DEMCJ wrote below. I was using the crack pipe earlier.

Thanks Demetrius

[TrunkMonkey]

just to clarify...

E pistons in the DE will raise the compression ratio of the DE engine.DE pistons in the E will lower the compression ratio of the E engine.

i think ckamc is refering to the latter. unless you plan on pushing some serious boost, i wouldn't bother using the DE pistons in the E engine. imo, the compression would be too low for street use.

-demetrius

[ckamc]

hmm so the theory is de 9:1 turns into 8:1... so then if i found 10:1 or 10.5:1 de pistons then i would be set....hmmm i have that down...right?

[WDRacing]

I don't know what the compression goes down to for sure, but if its 8:1 thats not bad. My RB20 had 8:1 and it ran like a raped ape.

[TrunkMonkey]

it's more like 7:1. i'm too sleepy to go through all my notes and find the exact ratio.

-demetrius

[ckamc]

let me know tommatow please

[ckamc]

well i just found some Arias pistons that are designed for the ka24e now i am wondering where i can order some and if there are any other brands that have ka24e designed pistons or any ka24de pistons that are around 10:1 or larger compression ratio?

[TrunkMonkey]

let me know tommatow please

it's exactly 7:1. i thought it might be a little higer, but it isn't.

-demetrius

[ckamc]

wow so DE to E ... the pistons must be 10:1 or larger... amazing

[veilside180sx]

It only drops one point placing DE pistons into a KA24E, if you look ar Arias, Wiseco, etc they list it as that. ie.. 9:1 will net a 8:1, so if you want a stock compression for a late '89-'90 E, then you'd need someone to make you 9.5:1 DE Pistons for your E. Which is what I'm looking into right now as well. Ok ok, I know the E is 8.6, but that's close enough in my book.

[TrunkMonkey]

It only drops one point placing DE pistons into a KA24E

it drops 1.6 points.

Quote »if you look ar Arias, Wiseco, etc they list it as that. ie.. 9:1 will net a 8:1, so if you want a stock compression for a late '89-'90 E, then you'd need someone to make you 9.5:1 DE Pistons for your E. Which is what I'm looking into right now as well.[/quote]you guys do realize that most of these companies do make pistons for the E engine. just because they aren't listed doesn't mean they don't carry them. all it takes is a phone call or email.

Quote »Ok ok, I know the E is 8.6, but that's close enough in my book.[/quote]compression ratio + close enough = a nice way to screw up an engine.

it's best to know the exact compression ratio that your operating at, especially when it comes to boost. if you ever have a rebuild that requires an overboring, milling or decking, you could raise your compression ratio to an undesireable level and not even know it. that couls mean disaster sooner or later.

-demetrius

[toki]

demetrius, you must not be taking into account SOME factor here, all the major companies list this information and other places confirm it. Possibly a different piston height or something.

I know for a fact there is a guy running nothing but 9:1 wiseco DE pistons and a cam in his ka24e and on 15psi (57 trim t04e/.63 ar stg 3) he made 350/370 wheel. This with an s-afc and bigger injectors too mind you.

either way at 7.4 or 8.0, it's not like it can't make power.