I know its been asked several times
 

BUT I CANT FIND IT!!!

Whats the stock hp and tq of a 89 7mge? Anyone know how much it would increase with a .020 over bore?

200 hp. .020 over bore will net you -2hp.

-2 HP??? I dont get it.

Nobody is going to answer?

Its a pretty open ended and ambiguous question.

Personally, if i was you, i'd scrap the idea of fucking with the block and stick on a decent set of extractors and exhaust. That'd net you another 20-30hp and then i'd leave it at that. The price required to get more ponies out of an NA car isn't justifiable, especially if you are just driving it street.

If you are _serious_ about building hp. Buy a GTE.

Well The #5 Cylinder got scored when my rod broke so its already been bored out. Its actually almost back together.


How is it open ended? I said whats the stock hp of a 7mge and what hp increase will .020 do... I dont see how that is open ended. If its going to take me down 2hp I would like to know why.

An exhaust on a NA is not going to net 20hp. .020 overbore is not going to make any noticable difference in power. It will probably feel faster due to the old motor being old and worn out.

lol thanks kwnate I actually just pm'd you. Sorry about that. I have a 3" blitz nur spec catback system on it and a aftermarket intake tube with cone filter.

With that big of an exhaust on a N/A you are actually not going to gain anything. That exhaust is for a turbo car and lets it breath a lot more. The exhaust you need for yours to notice anything is something way smaller. I bought a HKS Dragger for mine when it was still a N/A and it felt like it lost power and also would backfire on a high rev shift. Now with the 1JZ it fits right because turbo cars need to flow freely and let out a lot of exhaust because of the added air going in. Think of it this way when you think of horsepower, More air in more air out = More horsepower. Even putting a cone filter on your N/A you are still limited by the size of the intake runners and are not gaining much more air in than you were without it.

So your pretty much saying I have a stock car...

what about boring over by .2 or .4 with the 3" exhaust and cold air intake?

Do the math and figure out the change in displacement and that should point you in the right direction.

im really bad a math... and i wouldnt even know ware to start lol...

regardless what you do with your NA (unless you make it into a 7MGE-t (thats a turbo addon to a non turbo 7M which I would not recommend) your not going to notice any massive pull increase. Dollar for dollar your better just dropping in a 7mGTE or doing a 1JZ swap.

I have done a ton of reading in this and the 1JZ is the best overall, however the 7MGTE is acceptable as well (and cheaper).

Unless you are going to put it on a track though, you dont need to do massive upgrades. Personally, if I owned a NA, I would do what I could to get it running solid and at peak efficiency, I wouldnt mod the hell out of it. Its not worth it in my mind. Large overbore = large $$ considering you would probably be thinking cams/pistons, etc.. going to cost you more than actually turbo'ing it.

hmmm the a normal rebuild and just add cams, cold air intake and a new exhaust cause the car needs one anyway. then do body work and if i cant find the 1990 supra im looking for ill go GTE and have fun moding the car for stick. thanks for the info. im just trying to get as much as i can out of the GE was all i was looking for.

I dont own a NA, so I am typing solely out of research, not personal knowledge. (just so we are clear about that, lol)

Just build the 7mge to take a huge turbo Or a shot of nos

thats a nice way to blow the engine or was the the point?

No u will wont blew it if it's build up withe forged parts and arp bolts the stock crank is already forged but I don't know how much hp it can hold safely