7mge hp increase info

[907mge]

Since the subject of trying to get 25% plus increases in hp out of a 7mge, I will try to address this all at once. I am not trying to put anyone down, but rather try to express the info that I have learned from experience with my 7mge and time on the forum here.
1. Back when the mk3 came out in1986.5 it was reviewed by Car and Driver and given a 0 to 60 time of 8 seconds which is slightly faster than a new Honda fit.

2.HP can be increased but it is hard and a lot of money must be invested compared to the potential of a 7mgte.

3.In the late 80’s the car was quick but in today’s world with faster and faster cars it is falling behind not to mention how heavy it is.

4. The 7m was the last of a series of motor started by Toyota in the 60’s so the jz series is much more modern and more reliable for those who like that option.

5. As far as I know there is no aftermarket ECU for the 7mge and the stock one is not able to be tuned.

6. Aftermarket parts are far fewer for the 7mge than they are for the 7mgte.

Here is what is available as far modifications and bolt ons that can be done for the 7mge that I know of. If anyone would like to add something please do:
Intake: there are a few intakes for the 7mge but all off them stay in the engine bay and eliminate the stock air box which draws cold air.

So without building some sort of heat shield or getting cooler air from outside all you will do is suck hot air which will result in lost hp.

Intake Manifold: I guess you could get or make a front facing intake manifold but not without investing a good deal of money for an unknown hp increase. The stock manifold is made for the 7mge and does its job well.

Header: there are really only 2 available OBX and Pacesetter. I know the pacesetter requires modification for fitment but don’t know about the OBX. If you do put in a header make sure it is either exhaust wrapped or ceramic coated to keep down engine bay temps which will hurt performance.

Exhaust: I think there is only one for the 7mge which is the pacesetter catback. All the other exhausts are made for the 7mgte. The best option is to just have a custom one made up with the muffler of your choice. I have the HKS twin tip muffler cat back for mine made for the gte. I may lose some power in the lower rpms but o well.

Tuning: this is tough since there are no real aftermarket electronics for the 7mge. And generic chips said to have high gains are not what they say they are.

AFM(air flow meter): this can be modified to make it a little more sensitive for better throttle response. But is not a MAF.

Head: the heads are the same for both motors the only difference is the intake cam which is more aggressive on the 7mge. Cleaning and porting and polishing can be done for increased air flow and regaining hp.

Rebuild: engines lose power over there life and a rebuild with fresh parts can bring back lost performance.

Increasing Compression: this can be done but will require more work and trial and error to avoid knocking.

Boring: this is usually down on a rebuild to smooth and even out the cylinder walls and will only give a small increase in displacement.

Egr: it is only for the good of preventing knock and should not be removed since its removal has no real benefit.

Weight Reduction: this is good if you want a track car but to get a real loss you will need to invest some decent money and get rid of a lot.

Cams: they do make them but it will most likely require adjustment with adjustable cam gears. They will most likely give a rougher idle and are made for the 7mgte, at least the Brian Crowers are. By the time you are down you could have bought a JDM 7mgte for the money.

Stroker Kit: I think this is available, but for nearly 3grand. A 2jz swap can be done for less than that. Thats a lot of money for a 60hp increase.

Turbo: Why? Toyota already made a good turbo motor. And the ct26 is know for a good long life for a turbo. Others have tried to turbo the 7mge and found it to be not worth the money or time.