Hello. I've been considering taking my stock fuel injected 6 port 13b and installing a Racing Beat Holley carb kit.

http://www.racingbeat.com/RX7-1975-1...its/18045.html

I want to do this for a few reasons.

1. I would like to simplify my engine bay as much as possible. Since i'm shaving and wire tucking the bay.

2. Eventually i would like to swap in a turbo 4 port with a standalone ECU but for now i just want to keep the factory motor.

My question is. With the kit installed, am I going to lose power? I understand that it won't be as "reliable" as a fuel injected car but i don't drive it often so it doesnt bother me. I already have a ceramic coated pace setter header installed and i will be fabbing up a custom exhaust.

 

i am not trying to question you on your car but, you are fuel injected, want to go carb, then back to injection for turbo?

 

not any time soon. maybe year a year or 2 down the line when i have time to build a motor and get all the necessary wiring and such. then i would swap this motor into one of my corollas.

 

I dont see the problem..

I had a GSLSE motor with a sidedraft mikuni 44 back awhile ago. Was a peppy car! I wouldn't say you'll lose power. Might gain actually a bit.

Or you can just be happy with what you have till you go turbo..

 

Build fuel injection. The money you will spend on a holley setup can be used for a simple turbo setup. Install it and go. when this motor goes, build the new one. Cheaper, plus you get to with out the kinks in the turbo now.

 

Seriously, I'm +1 ing myself. Going from carb to turbo is a big difference. If you turbo now, you'll save $, and gain seat time.

 

You do realize the link you posted is only the intake manifold. The carb is a lot extra...

 

That particular link goes to the intake and carb kit, not just the intake manifold. The manifold is only $295, the carb is $662. I'm also on the side of leaving it F.I. You'll likely gain power, but you could do so just as well from a Megasquirt, fuel pump and injectors and a better exhaust. Why spend time changing things when you already have a good platform to work with?

 

You guys missed the part about simplicity i think... He's not looking for power now. When he does, he's doing it right and putting the boost through a turbo motor, not an N/A one.

Also carbed rotaries sound EPIC. As far as reliability, I wouldnt worry. GSLSE's are prone to flooding more that the carbed 12As of the day remember =)

Only reliability I ever had with mine (I have a side drafted S4 13B) is when it gets to be about 20 degrees outside. The intake will ice up really bad (there is no coolant in the intake on those) in cold weather until the engine bay heats up. It throws the tune WAY off and it complains about it. But in the summer time, its a hoot. Combined with your header you should net a power gain.

Now you just have to choose holley or side draft kit. Also check out the used market. You can get carb set ups for $400-500. Just get your fuel system all set and you're good to go.

 

awesome. this is what i like to hear. its funny because at the same time i'm looking at Turbo II swaps. i guess i need to make up my mind.

 

I had the 650 RB Holley/intake on my previous engine. It was a streetported 6 port. Like funk said, in cold weather it would act up but after engine bay temps got up it was fine. Being in Texas, I didn't had to worry about that but for a few weeks a year so it wasn't an issue for me. With the RB set up you're not gonna have a way to activate the 6th ports. You need to pull the sleeves when ya swap. With mine it was a bit sluggish under ~4k though it was 'a hoot' beyond that up to 8k. That set up along wig ceramic coated RB header, separated exhaust back to the axle, and straight though muffler netted me 178hp. I've got the dyno sheets lying around here somewhere but I'll have to do some digging. Until then, how about a video and a pic instead.

http://www.youtube.com/watch?v=77SGOjGYHJo

Taken a few years ago, prolly not as clean as yours will be but it'll give ya an idea of how it'll look I suppose


That same set up is now mated to a half bridge 4 port, haven't dynoed that yet though.

 

I think you should be happy with what you have at the moment Team Gileto.. I wish I had more patience. I would still be boosting. Take your time. Save your money and do it right.

The simplest thing here is leaving his setup alone and waiting to do a turbo setup. I'm just saying. The next simplest is a carb setup sure. I agree a nice carb setup would be awesome, but I see it also worthless if he's not going to be driving the car much, and wants to upgrade soon...

And whats wrong with turboing a NA motor? Have the supporting mods and your good. It's been done quite a bit successfully. My turbo GSLSE motor blew up because I never locked the timing on my standalone. User error on my part or i'd still be boosting.

Just trying to show Team Gileto all the possible options he has on doing what is best for his situation