I asked Jeff20B about this one and he said to post it so others can see, this info might be useful. I'm trying to see if my motor was originally designed for fuel injection or carb. It's a 13B 6 port and currently has Racing Beat lower and upper manifolds, as well as a Weber 48DCOE carb on it. The car was labeled to me as an "S" model, but I thought the 13B 6 ports only came out of GSL-SE? Any info is appreciated. Please excuse the pics, camera phone.

 

Someone installed a GSL-SE engine in your S model. It is a 6 port fuel injection engine that somebody added blockoffs so it could work with a carb. It is not an '86 or later 6 port.

The primary injector holes appear to be blocked by perhaps a big chunk of sealant. The better way is to make or buy an injector block off kit. They are easier to remove. I have a GSL-SE intermediate plate with a dime jambed into each hole. lol I'll have fun digging those out.

The lower intake manifold is stock but the aux port actuators have been removed. Only the upper manifiold is RB.

Does it run and drive ok? Kinda gutless in the low end?

 

Awesome, didn't know this. The car off the line takes off very nicely and has good, perhaps great power, all the way up to fourth/fifth which is when it starts to slowly give out. If I wanted to turn this back into a fuel injected motor, and possibly turbo it with maybe an S5 stock turbo off an FC, would that be alright? Or no because the motor isn't designed for turbo? The motor is definitely strong and from what I was "told" it had a rebuild and when I purchased it, supposedly had 40k miles on it.

 

the rotors are 9.4 compression so i wouldnt risk turbocharging it.

 

I was told from a mechanic that I could do a blowthrough turbo setup and put on a s5 stock turbo and make stock boost and I should be okay. Nothing too crazy. Or is that not true?

 

ive done many cars with 9.4 comp rotors and have had very good results. you just cant go crazy with the boost on pump gas.
i even have several turbo drift cars running the 9.7 rotors with great results.. higher compression= quicker spool up and better power with less boost.

even mazda dumped the 87-88 turbo rotors in favor of higher compression rotors

 

Ohhh Jeff,
Just because the ports are wired open doesn't mean it's going to be gutless down low. I know I'm repeating my self here, but there is a post somewhere where someone dyon'd their car with the sleves working and with them wired open and the car made more HP and TQ across the enitre RPM band with tehm wired open. The reason mazda even invented those crummy things was to save gas and reduce emmissions. The engines do not make more tq on the bottom end with the 5&6th ports closed. let's put that myth to bed. My old na stock port ran better with them open and so does my current streetport.

 

So if I open them and clean them out it should/might make some kind of difference?

 

there already wired open dumb ****. thats why its so fast
oh and its got 3mm apex seals wich means its stronger/more ready for boost

 

I think I want to go fuel injection.

 

thats fine, its just more money

 

Even if you use the stock ECU?

 

thats garbage
if your going efi you at least need a halltech or microtech. ask chris

 

Well there's a difference if you want to make power, like Chris, or if you want to get it done at an affordable cost just to obtain stock boost. Eh? If it works it works, might not work the BEST, but it might work.

 

nuff said.
do you want to do it right or just do it............................

 

If stock boost means 220ish HP, i'm happy!

 

not happening ,stock injectors are maxed out before that
im not only the client im the president = blow-through son

 

Well that's out of the picture. Might just have to go back to fuel injection, sell off my carb setup and save up for a good ECU.

 

If you're looking for a cheap EFI solution, check out MegaSquirt.

 

+1 MS is a really good system. Very adaptable. I've never messed with it, but a friend of mine has his 240z running an efi system controlled by MS. The entire fuel system including the computer was around $500 if I remember correctly. Just go mass air, whatever you do!

 

If i'm running the stock S5 turbo shouldn't the stock S5 ECU work fine? Applying an aftermarket ECU is normally always needed when you upgrade to an aftermarket turbo isnt it? Or maybe there is someone that can chip S5 ECU's. Regardless, $500 is a pretty good price starfox.

 

Does the TII fuel system use a draw through vain air meter, or a blow through mass air? I know from experience (xr4ti) that a draw through efi system with a turbo is pretty....not good.

But to answer your question, yeah if you are running the stock turbo, the stock computer should work fine. (I would think at least, unless its some retarded speed density setup, then you might have to upgrade)

 

I wouldn't mind using megasquirt checked around and the prices are pretty good. But if I can get away with the stock ECU then I probably will to start out. I want to start stock turbo/stock ECU with a GSL-SE fuel pump and mallory FPR to see how it runs. If it runs good for a while I can look into upgrading to MS or buy controllers for air/fuel regulation that work in conjunction with the stock ECU.

 

What air metering system does the stock TII use? Just curious.

 

I am starting my boosted gsl-se project, I will do a full writeup on it in the winter... my system should be pretty easy but if you already have the carb and only wanting to run ~7psi boost... i would keep carb honestly. Just my opinion though... Good luck with the build.