idea for a crazy engine...

[ceniack]

DOHC KA24DE with KA24E pistons, and a turbo.

you would prolly have to run alcohol or some crazy high octane fuel to keep it from blowing up.

what do you all think?

[TachyonS14]

WAY too high CR. KA24E pistons bump the CR into the 11's, and i hear higher 11's with ones from the 89 240's.

[ceniack]

yeah, i know that the compression is high, and adding boost would be flirting with disaster, but what if you ran an exotic fuel (like alcohol, etc...) it wouldn't be for daily driving, prolly more of a drag motor or something. just a thought

[Dattebayo]

I did it without the turbo, and its really enough power by its self. If you did it with a turbo, you'd drive for two blocks and then spontaineously cumbust your entire engine.

Im serious, you would blow your head right off the studs when you hit the gas pedal hard.Or if it lasted that long, you would melt your pistons/rods right down to the nub.

[Mr1der]

I keep thinking the 24e had the lower ratio pistons...

what's the ratio on both anyway?

[Nismo_Freak]

I keep thinking the 24e had the lower ratio pistons...

what's the ratio on both anyway?

It does, but when you hybridize the DOHC with SOHC pistons you get high compression ratios.

You could run 6 psi on the motor... people run 6-7 psi on the Celica GTS engines and they seem to stay in one piece. A good headgasket, some chamber work, along with a solid high octane fuel and you've got a responsive engine.

It would easily run on alcohol, alcohol engines love compression and the head temps / combustion temps would be actually lower than your typical gasoline powered KA.

[Drill_Sergeant]

2000 and up celica gts = 2zz-ge = 12.5:1 compression ratio

[rico05]

Nope. 11.5:1 http://www.corollaperformance.....html

[[Zero-S]]

I'm pretty sure the 90's KA24e pistons would bring the de's compression up to 10.1:1. The 89's should be 11:1.

[ceniack]

so what kind of numbers do you think an engine like this could push (running alcohol or something similar)?

[rebelgtp]

it could be done with an alcohol based fuel. and would put out quite a bit of power.

in the 60's Olds built a turbo version of there aluminum 215 V8 that was running at 10.5:1 compression ratio. it had this lil extra tank that you power what they called "rocket fuel" in. It was basicly alcohol that got mixed in to help keep things from blowin sky high.

[Ubernoober]

My 1970 Mustang Mach1 : 11.7-1 CRFactory engine. Back when you could get decent octane from the pump.

[rebelgtp]

yeah but your mach 1 didn't have a turbo on it. the point is running high compression with boost, kinda the opposite of what you are "suppose" to do.

[Hellion240sx]

ok i have no idea what is being discussed (compression), but i remember thatmy friend was telling me to swap the exhaust cam from an sohc to my dohc ka24de. i remember something being said about compression and what not, but that was a long time ago anyone know what im talking about???

[Bbill528]

and leaded fuel which allowed for higher CRs....

[IvoryJ30t]

ok i have no idea what is being discussed (compression), but i remember thatmy friend was telling me to swap the exhaust cam from an sohc to my dohc ka24de. i remember something being said about compression and what not, but that was a long time ago anyone know what im talking about???

no, the cams have nothing to do with the compression ratio, and a sohc motor only has one cam, so theres no exhaust cam like a dohc has. the sohc uses a single cam for intake and exhaust.

[Hellion240sx]

hmm could it have been the other way then????

[[Zero-S]]

Take a look at the cam from an sohc, and the exhaust cam from the dohc...it doesn't fit. Your friend is full of crap.

[fuzion]

He probably meant to take the exhaust cam out of a DOHC S13.. I *think* those had the most aggressive profiles, S14s have a 'calmer' one..

(sounds good.)

[Hellion240sx]

there we go... he has an s14, so what your saying fuzion is about right

[S14Life]

I think a KA24DE with KA24E pistons running alcohal and boost would KICK ***. Someone do it and let me drive/have it.

[ceniack]

I think a KA24DE with KA24E pistons running alcohal and boost would KICK ***. Someone do it and let me drive/have it.

well, i think a friend of mine and i might try it, we are both planning on doing swaps, not sure how long it will be though (i am waiting on an insurane settlement from my wreck that got me my s13 in the first place) but if/when we get started we will let you all know. thinking about trying to buy a shell and then using it as a drag/show car. i think high compression with boost would be crazy, and hopefully unique, the main concernt i think is using a high enough octane fuel, and re-enforcing the bottom end, and keeping the head on the engine.

*edit*

these connecting rods

and some forged pistons with the same stock compression ratio (not sure of a place who makes them, just found those from one of our sponsors)and something like this to hold it all together