HEMI's?? - Toyota Nation Forum : Toyota Car and Truck Forums

FFChick · 08-29-2007, 01:15 AM

I'm curious to know if anyone else on here has a HEMI in there Corolla

I have an '81 Corolla and it has a stock, unmarked HEMI in it. I was told that its rare to have but i wasn't sure so i thought i would ask

Thanks everyone

Flashmn · 08-29-2007, 01:28 AM

hemi as in hemispherical head, because thats what hemi means. I think the T series engines with the G head were hemispherical. As are most of the 16-valve heads. (well you can call them hemis).

Hemi V8, is just a V8 engine with hemispherical combustion chambers, not something special.

EverAE · 08-29-2007, 01:30 PM

ya im going to assume you have a T series engine that your talking about, not a big block mopar.

eage8 · 08-29-2007, 02:25 PM

it's impossible to have a HEMI with more than 2 valves per cylinder. or else the valves would have to be moutned at weird angles.

toyota heads are mostly hemispherical in nature, but are not true HEMIs. at least not ones with more than 2 valves per cylinder.

that and HEMI is trademarked, so it would just be hemispherical, not a HEMI

FFChick · 08-29-2007, 02:34 PM

yeah i know the word "HEMI" belongs to Dodge (i think), but i had no idea what else to call it so i thought thats the way i would explain it.

Thanks

eage8 · 08-29-2007, 02:50 PM

np

btw: the reason hemis were/are so popular is because in a lot of drag racing the engines are limited to 2 valves per cylinder. And having a hemispherical head is the best way to be fast with only 2 valves.

crysler started using it again just because it has a connotation of speed and racing. that and they don't have to put as many valves in the engines

FFChick · 08-29-2007, 03:08 PM

oh okay that makes sence now lol haha

Ninja7 · 08-29-2007, 04:34 PM

The 4A-GE has a hemi combustion chamber or crossflow cylinder head . It has four valves per cylinder. Two intake on one side and two exhaust on the oppostie sides. The term hemi comes from hemispherical combustion chamber which is when the combustion chamber is hemispherical shape like a half a globe. Hence the name like hemisphere. The old design combustion chambers were called wedge combustion chambers. FFchick probably has the 3T-C engine in her car which is a 2 valve per head push rod hemi combustion chamber engine. In the old days it was nick named the "mini-hemi".

Flashmn · 08-29-2007, 04:36 PM

Well the 16 valvers would be more like a pent-roof, but you can theoretically call them hemi...