zoil

hello cant decide weather to do a turbo2 swap or rebuild my na.

let me know what you think about how i plan to rebuild the na

i would like to do a large streetport and a half bridge and use the rx8 rotors in my 13b im just not sure how this will work or the kinda of power it will make. i want to use a haltech system also. maybe do ITB not sure.

if i do the turbo swap im going to keep the large streetport and half bridge but still use the lower compression rotors.

not sure how drivible either setup will be on the street with the half bridge or how long the motor will last.

i have read alot of treads and still lost with all this lol

Aaron Cake

iTrader: (1)

I'll put it this way...You could half bridge the NA, install a standalone and ITBs, and with a decent tune and an exhaust that won't make everyone around cover their ears, get about 230-250 RWHP without much torque below 5000 RPM. More power is possible with an open exhaust and intake, but the noise would be far too much for the street. Also due to the bridgeport, you're looking at around 8-10 MPG.

Or you could swap in a TII engine, do some basic fuel upgrades like larger secondaries and an RTek ECU, up the boost to 12 PSI and make 250HP all day long while still getting factory mileage.

rx-7PRIDE

swap it

rico16135

The guy sounds like he knows what jes talkin about

zoil

if i swap the engine i want some where between 350 and 400hp switch i know is possible for the right money. i guess my biggest question is which setup will last longer and be just as fun to drive. i know 250hp is way more the enough power. i have been told the rx8 rotors will give more torque just not sure weather will make a difference. i want to still be able to just get in my car and drive when i want as far as noise dont bother me MD has histoic tags. thanks for all the info im new to these cars but love them and cant wait to get my next one

Riceking

turbo swap

rx-7PRIDE

definetly go with the twin turbo swap with simple things like cold air intake and exhaust small fuel upgrades etc you can easily achieve 500 hp for cheap

fcs5boosted

i would do the turbo swap an do modifications an get the power u want out of it, I am currently doing one myself with a partial bride if u go full bridge it will effect the way the turbo reacts due to the over lap but many people do have a great success with it an make power out of it. micotech, Garrett gt series or if u have a tight budget Borg warren s series, fuel mods, ignition mods an some other things an u will be in the hp range u want it

WAM'90FC3S

I am in the same situation. Rebuild the n/a or do a turbo swap. Porting it would make it nasty, but I still intend to drive it around. Thats why I am thinking do the swap. Im curious about how to go about the rebuild though. THinking about taking current engine, and doing peripheral ports on it later for a backup. Anyone have a good idea how to keep things cheap

DRitch90

I'm going with tha swap

Aaron Cake

iTrader: (1)

The RX-8 rotors won't make much of a difference. Mazdatrix did some extensive dyno testing when those rotors were first available and showed negligible gains.

I think you don't understand the definition of "noise" when applied to a rotary. A rotary engine is the most efficient way of converting fuel into noise ever developed. If you run around on an uncorked bridgeport NA engine, you will be pulled over almost immediately. And that's if your brain doesn't explode from the pain of your eardrums.

Here's a bridgeported NA engine with an exhaust that extracts the most power:

http://www.youtube.com/watch?v=7qpfqB1Hf40

The recording doesn't do the noise justice.

Now, all that said, if you still want to make above 200HP, then forced induction is the way to go.

zoil

i guess ill go with swapping the car. but how drivible is a bridgeported car?

Aaron Cake

iTrader: (1)

Bridgeports can be very drivable with a properly tuned EFI system. I drive my bridgeported car all the time (it's one of my daily drivers). HOWEVER, that proper tuning takes experience and I'm going to say this only applies to turbo bridgeports. NA bridgeports are just too damn loud. No amount of tuning is going to get you decent mileage on a bridgeport. Just too much overlap.

ramo

iTrader: (30)

i love watching aaron show up on new member threads , always helpful!

fd3svs

How about putting a turbo kit on a NA?
Does it cost less or more than a t2 engine swap?
I have an NA, but I want boost!
Thanks

nicdchris

iTrader: (1)

If you know what you're doing, are patient and know how to get dirty at the junkyard, you can turbocharge it for $500-1000, but its much easier, faster and probably more cost-effective if you can't find a good junkyard to just buy a TII dressed engine, rebuild it then start modifying from there.

Ebay, and the local engine importer are looking for $1200-2000 for the engine, all the crap bolted to it and to ship it to my doorstep. Another $500-1000 for a rebuild kit for it (just for safety)

That should put you in the 200-250 hp range...

SeanB

There's some info here: https://www.rx7club.com/2nd-generati...7/#post5131155

Aaron Cake

iTrader: (1)

The easy way to answer that question is that there is no turbo kit you can just buy and bolt onto the NA. If you do turbocharge the NA, then all the parts will be custom.

Rethonal

If it means anything, i good port job makes a world a difference, in my opinion. But i turbo2 would give you a gorgeous challenge. Thats a tough choice

noch

I have been pricing some TII jdm engines with transmission and ecu and there are a few on ebay now. Seems pretty affordable to do the swap. I even priced an entire front clip local here in GA for 2K and that was delivered. I was trying to justify getting another NA car and modding or supercharging it but all roads seem to lead back to a TII to start with or a swap.

dohtem8

iTrader: (17)

You can swap the engine, or you can just rebuild an engine using some parts off your N/A.

boosted516

great info aaron

boogieonfunkyreggae

Thanks, Aaron Cake! I just started working to get my FC back on the road yesterday, (I lost my license in 2008 for drifting, and had to put my 7 to the side.) and you've given me fresh insight into the path that I'd like to take with it. (sorry for the pointless post. I made a new account because I didn't like my old user name, and forgot the email that I used. I must make 5 posts so I can look at parts!)