Ok, I'm not obsessed with power but the stock GSL SE is just a little bit underwhelming at the moment. I've got RB exhaust on it to liven it up and thats helped a lot. But what else should I do for some extra power? It's just like it was out of the factory, 6 port, EFI, stock airbox (K&N filter), blah blah blah. I dont care about forced induction or not. I'd like around 200 hp to the wheels preferably. I'd like to stay fuel injected. Is 6 port bad? Why are the 4 port engines so much better for upgrading?

I know that turbos are difficult on these engines because of the 6 port operation and that they are high compression. Is it worth the effort to run a turbo but run low boost to protect against detonation? I've got some lightening upgrades in my future and suspension but power is just fun.

Thanks.

 

(For turbo) I know that to keep Fuel Injection, I'll need to get a standalone ecu. I've already got that on my list of mods for the future. More injectors, and a better fuel pump to keep up with the demand. I'll also have to change or remove the AFM setup. Also, remember that I don't have to pass any kind of emissions but I'd like to keep the driveability that this thing is already famous for.

 

I'm right there with you. However, I have come to the conclusion a stock se motor isn't gonna be a powerhouse with bolt ons. Best options seem to be power-to-weight ratios, gear ratios, and lightening up the rotating mass.

IE: Lighten the chassis, upgrade to lighter and modern components throughout, get better gearing, and lighten up everything moving. Aluminum flywheels, lighter wheels.

Get some 6 port sleeves too. Open the motor and port it? Dunno, but as far as making a fun car I'd focus on the above and some nice suspension.

 

Port your engine... or S5 rotating assymbly.

 

A couple of answers:

1) David Lane runs a turbo-GSL-SE producing about 330 flywheel hp. He has years in the development of the car (he bought it new) and a good deal of custom mix-and-match of aftermarket parts--too many for me to remember and list. He's using an Electromotive Tec3 for engine management and has spent hundreds of hours patiently tuning it. If you search on the web, you should find info on the car. He doesn't participate much on this forum. Bottom line: It can be done with a lot of time and money.

2) Easy solution: Buy my car. Home of the ResurreXion-7 We can talk about a possible trade for yours. If you're interested, PM me or send an email.

 

I understand that porting a 6 port engine doesn't yield as much power gains as porting a 4 port. and how would the S5 rotating assembly help? What my idea right now is to just use this car to learn about the rotary and is kinks and then later (probably around the summer) trade this car in and try and get a nice FD model because I personally love the looks and that the engine is already powerful and use that. I'm gonna try and use it as a base for my senior highschool project. I think it would be really cool.

 

S5 has higher compression, and it weighs less (which of corse doesn't add any power but less sprung weight is helpful)

I was assuming you wanted to keep your S3 irons.

If you want to do a keg swap that would give you a 4 port engine super eazy, but you wouldn't have the advantage of the 5 & 6 ports and sleaves. They give you a smother throttle opperation.


As for making power I don't see how it would matter 6 or 4 ports. If your gonna go to town dremmiling the b-jesus out of it. When you have the engine all apart on your kitchen counter you can cut out the divider between the ports (I did on my DD).



Yeah, 90's RX-7s are cool, but the common FD owner thinks his car is made of gold... I remeber looking at buying an FD shell last year; I found one for $3000. No engine no tranmission no rear end no wheels no glass no wiring missing a fender, it was a steal of a deal!!

 

Desiring more power is not bad, turbos are not that difficult in these engines just take time, tuning and money. You have to modify your intake to accommodate the turbo like a T3/T4 get an intercooler a fuel ECM and some effort to do the work,it can be done, I own a 85 gsl-se 6 port turbo with a haltech F10X and almost in the process to finish the set-up. You mentioned you would like to get around 200hp, to get those numbers don't need to spend much money in a turbo set up, just get a Holley kit from Racing Beat, don't port your 6 port leave it stock install 5th and 6th inserts stick them in open position it will give you close to 200hp for street are good numbers with out spending to much. Happy homework, let me know!

 

If you put a carburator on don't put anything back into the 5 & 6th ports. Just take the cylindrical objects that close them off out. (I wouldn't call them valves, but thats kinda what they are)

 

Is it just me that likes it when the secondaries open hard enough to throw you back in the seat? I know you're not nornally supposed to feel them, but where's the fun in that?

 

Haha i love secondary neck snap jeff

 

Has any one tried the racing beat holley setup on a nonported se? Does it make a huge difference in power over the fi with working aux ports?

 

I tried the RB manifold on a ported S4 NA in a 1st gen. I used an Edelbrock but it's similar enough to draw a conclusion. Oh and long primary exhaust. The finding is more power than stock S4 NA EFI, or it seems like it is. No dyno to prove it either way, but it feels like it is more powerful.

Of course the bottom line is if you really want more power, do a turbo. But that requires a whole different setup. NA is fine for most people. Only those of us who like pleasure and pain go for turbo.

 

Ok, after seeing Austin's FB turbo swap thread, its made me want to swap a Turbo II motor. I've read many different threads regarding it and I know fairly well what I'll need. But the big thing, the engine, where do I get one? Do I look on eBay, or go to a JDM importer website? Can anyone point me to good, reputable sight that sells good engines or should I just try and find a car in my area and strip it?