Mazdanewb

So i finally found an rx7 fc that isnt in the best of shape but its a start...


The owner said it needs these things and that it has been sitting for a few years...
a new clutch slave cylinder, spark plugs, spark plug wires, and possibly ignition coils.

However since it only has a 13b na in it and i want a 13b turbo should i bother rebuilding the 13b na thats in it....? or should i just by a motor that is already turbo..

If i understand correctly the rotars in a 13b turbo are diffrent then a 13b na?

just wondering what the difference is between the two engines and the cheapest way to go about geting a 13b turbo engine in my car... i was thinking of just picking up a 13b turbo from ebay jdm or whatever... I really am just gonna upgrate the turbo and ecu fuel pump injecters ect....

Along with this i would like to ask about maybe putting a newer engine does it have to be from a 91 in order to mount up correctly with the engine mounts that are in it or am i able to get a 93 or newer rotary?

for instance can i maybe even put a newer engine that is twin turbo as long as it comes with the ecu ect?

Slow Rotor

Well you should just buy a turbo II from the start IMO

slpin

iTrader: (9)

how about you buy my FC and dont mess with a piece of **** that needs alot of work?
Obvious, that car, to do what you want, will require some amount of knowledge on RX-7s, which you dont have.
It is a big step to be doing all that, and not only that, you are asking questions that have been covered more times than paris hilton have been uncovered.

$3,333 - The car will need nothing but oil changes and coolant changes for a longgggg time...

Mazdanewb

By building the car from nothing to something i will learn more about it may take me longer but i have very good patiance and i have done **** tons of research on rx7s... With that being said please feel free to point me to a thread that has been posted such about the diffrences in 13b na and 13b turbo....

also i would like to add i really wanna know if any newer 13b twin turbo will fit in my car with out any fab tech work needed ? i can get exsuast custom ect i was thinking about maybe just getting a 13b twin turbo engine tranny uncut wireing harness ecu ect....... But if its gonna take alot of welding then i dont wanna mess with that...

arghx

iTrader: (3)

read the FAQ please.

2slow4stock

iTrader: (18)

Just close this thread... Use the search button.

Also just because your lazy and didn't take any advise.

https://www.rx7club.com/search.php?searchid=7928727 Now pick one... Just imo... You will need to weld to put in a 13brew.

Mazdanewb

was not trying to be lazy thanks by the way i just was typing in the wrong key words THANK YOU.....

13b II i guess is what im going to have to go for i will look around and see what all needs to be done to put a 13b twin turbo or 13b rew engine into the car thanks

slpin

iTrader: (9)

waste of money ^

Mazdanewb

your saying it would be a waste of money to put a twin turbo rew engine in my car??
Or are you saying waste of money to put a 13b II? I just want to have a fast car

and am looking for the best way money isnt really a problem granted i dont want to spend any where near 25-30k.... by fast car i mean somthing around 350hp or more

2slow4stock

iTrader: (18)

Honestly the best way without welding, is 6 port tii set up. OR the absolute easiest way is just buying a full TII swap. The 13bre or rew, will need to be fabricated into place.

Just do a TII swap.

The Shaolin

iTrader: (5)

You haven't done much research at all, and you really don't know what you're talking about.

Ooh, twin turbo is faster than one turbo, because there's two, right?

Buy a TII and learn to do basic maintenance before you buy a car that needs much more work than you're capable of putting into it.

Mazdanewb

LOL.... its not that the twin turbos are faster but dont they create more hp? well the engine that they come with 13b rew has more horse power then a T II correct... Stock of course with out doing any upgrades as a direct engine swap....

If i am mistaken maybe i need to do some more research?

however thank you 2slow4stock.... Thats what i watned to know.... Im going to purchase a FULL T II engine with transmission and i will upgrade it from there less of a hassel im not a big fan of welding lol....

Mazdanewb

http://www.jdmenginedepot.com/jdm_en...-T_S5_TURBO_II

Im going to get this engine, and then up grade, Fuel system, ecu, Turbo, and more when i get to doing this i need to find a shop here in oregon that can help me tune it right I understand i have many of hours and questions ahead for everyone because like my screen name says mazda newb. I find it hard to really find info on this site about certian things.. and the faq page on the 2nd gen are just freaking awsome there is alot of answers there that will help me from not asking already asked questions. i just learned about that today.. However the more i am on this site the more i see how many people are just rude and hostile everyone needs to relax its a forum where u can ask questions about your rx7 that you may need help on.... Im not saying that its not good to really do alot of research but some of the old timers on this site can guide you to the right area ez, by knowing the key words it really helps... i will do more searching around on the threads i know it has to get a little old to see stuff posted all the time about the same stuff but really rather then putting ur two cents in and saying something rude why dont u either help or not post?????

i was just really wanting some insight on my winter project... i will search the forums more before i post however if anyone knows any rx7 shops in the eugene oregon area hit me up i will search for that on this site as well i tried to google one and could not really find anything...

Through all the research i have done u can make the engine im going to buy push damn near as much as a 13b rew... when they have the right mods... and the 13b rew sounds like a pain in the butt to put in the fc... so i made my decision based on the help i have recieved and the research i have done... TY

slpin

iTrader: (9)

13B-REW is a waste of money to swap it in
you will go quicker with the same amount of money spent on a standard t2 swap

Evil Aviator

Since the current engine is blown, and you don't want an NA engine at all, you may as well buy a motor that is already turbo.

Turbo rotors have a slightly lower compression ratio.

If the replacement engine is not from the same series as your car (Series 4 = 86-88, Series 5 = 89-91) then it will be more difficult to swap. Since you are a noob, I would stick with the same series. As explained earlier, a Series 6+ 13B-REW is generally not worth the trouble, and if you read the 3Gen forum you will see that they almost always ditch the twins for a single turbo once they are serious about going fast.

In that case, I hope your car is a Series 5 (89-91). Also, you may want to check with forum member Japan2LA to see if he has better pricing, as his support is usually better because he can also sell you other used parts that you will need for the swap.

That is normal on this forum because the people here are not a bunch of Honda teenage morons who are going to encourage you do to things that are a waste of time and money. You can think of it as "tough love". You will get accustomed to it after a while.

Be sure to read the tech sections on these websites:
http://fc3spro.com/main.html
http://www.rotaryresurrection.com/2ndgen/techmenu.html
http://www.aaroncake.net/RX-7/tech.htm

2slow4stock

iTrader: (18)

lol, I agree. The twin's aren't that great. People do swap them. But like Evil said, talk to Japan2La. He has start up guaranteed, with sure 100psi+ on all the faces. A friend of mine bought a motor from him, and I have bought parts off of him. He's a legit guy.

Also you wouldn't want to go with the 13brew route anyways, you'd have to buy different coils and new ems and what not.

What year is your car? If you would be doing a TII swap, use your n/a harness. It will make the swap a lot easier. What I mean is, (S5 is plug and play, while s4 you have to repin and depin some things on the engine harness) (If you have power steering and what not)

Vdub2002

I dont understand the huge 'it HAS to be turbo' crowed, why not get an N/A running, learn the ins and outs of a rotory when you dont have to worry about certain problems that turbo engines have.

Evil Aviator

Some people just really like the acceleration, the "psshhht" BOV noise, or simply to be able to tell everybody that the car is turbocharged. I don't think that somebody should even buy an NA car to start with if they are sure that they want a turbocharged car. Personally, in the 250hp and less range I like the NA cars better, and my TII was the first working car that I sold off to trim down my RX-7 collection. I don't miss the TII at all, but I eventually had to sell off my 1Gen NA when I moved and I still have a pit in my stomach from getting rid of that one. Fortunately, the new owner still lets me drive the 1Gen when I visit.

Mazdanewb

THANK YOU For the help... My car is a 88 BALLZ MORE WORK but as i understand im gonna get used to saying that... yeah i have never owned a turbo car and i dont know much about them and i still have alot to learn about rotary engines and turbo chargers... it will take some time... alot patiance and alot of effort . Alot of people when they first got into rx7s were probly just like me lol...




SO with that being said only haveing a 88 fc what issues may i run into when buying the t-2 engine? I will do some more research on the site im positive this has been done many times .... I wanna try and put a a Series 5 (89-91) in it....

Mazdanewb

hmm i dont have the car parked at my house yet however i asked the person i bought it from what model it was he said its an 88 t 2. its gonna take some tender love and care to bring the car up to what i want out of it and one of my best friends is a paint and body fiberglass guy so he will be doing that part to bring up the condition of the out side of the car...

i know its nothing pretty now but hey its a start and ITS AN RX7 Everyone has to start some where i figure buy building and doing work to it my self i will have to do the research and there for learn more about my car

slpin

iTrader: (9)

its not a bad looking car, the quarterpanels look untouched.
really, fenders are easy to get a hold of, but a section of the quarter is much harder to come by... it looks pretty nice...

dont bother putting a S5 engine in there...

Not only will you have to swap the front cover to keep the MOP intact. (Or do you want to look like all the other idiots running premix on their street car?) You get a higher compression rotor which just takes away the buffer room for detonation, which, an inexperienced rx7 owner such as yourself would need.

Run that S4 engine till it blows, or if its blown, send it to kevin or atkins, have them rebuild it. a 350hp goal that you are trying to achieve isn't hard. It may just be easier with a lower compression rotor too....

I also have a S4 shortblock from Japan2LA. It is a good engine if you are interested in buying it XD

Mazdanewb

To be honest with you i dont want to invest in anything in a na motor... i understand that is going to be a learning process and i may end up wasteing money and replacing stuff all the time lol but sooner or later i will get it down...

The car has all t 2 running gear the engine however was garbage after he blew it the 13b na engine in it now needs work but i really wanna do a turbo swap..... im gonna do some lookin garound see the diffrence between the s4//// s5 engines and as far as putting the s5 engine in there i was thinking for down the road when i blow it up i would have more options with that engine, porting it more horsepower, upgrades ect... however i heard there is alot of trouble shooting when doing this...

im going to do some more research and find out the diffrence between a s4/ and s5 engine. it just seems like i have set my hopes high for this car and want it to be super bad *** ... The goal is to smoke my buddys corvette its completly stock other then tires and rims.. he has a ls1 engine. i dunno i really want something that will be a looker lol aka neck breaker lol but above looks i want it to perform at its best.

Might be a newb as hell question to ask but since it had a 13b t2 engine in it in the past do you think it would still be as big as a hassel to put a s5 rotary engine in it..

Im really working on meeting people that live around my area that i can talk to about rotary engines and such..

i guess its always been something i have wanted was a rx7 with a turbo engine that could beat up on some v8s...... lol

Evil Aviator

OK, that is good because the S4 is a little easier to deal with. However, I recommend that you get an S4 (86-88) TII engine rather than that S5 TII engine in your link. Swapping to an S5 is more trouble than it is worth.

We are ALL still learning.

Noooo! Stick with the S4 engine! Don't worry about the extra couple of horsepower advertised by the stock S5 engine. If you want more power, you can spend a measly $625-750 on a simple bolt-on BNR Stage 1 or Stage 2 turbo rebuild for the S4 engine that is good for over 300rwhp if you have the fuel upgrades to support it.
http://www.bnrturbos.com/2ndGen.htm

The S4 engine has the mechanical oil metering pump which is much easier to deal with than the S5 electrical pump. The S4 has lower compression rotors which give a little better detonation resistance, while the S5 rotors have higher compression which give a little better performance when the engine is not running boost. The peak horsepower difference is from the better design of the S5 turbo manifold, but once you upgrade the turbo this is a moot point. Most of all, the S4 engine is a direct fit in your car, while the S5 engine will be a pain.

It doesn't look too bad in the pictures. The front end will be a pain, and the side door trim piece is pretty expensive at about $100, but the rest of the car looks like it will not take a lot of work to repair the body. I am assuming that the suspension and brake system will need a lot of work though.

Mazdanewb

yeah i plan on redueing all that as well yeah my buddy that does body repair came and looked at it with me he is also gonna be the one to paint it. I am thinking of painting the whole car in carbon fiber.... i have never seen a rx7 in full carbon fiber paint job so we will see

http://www.youtube.com/watch?v=3qDV5gR90zY

as seen there but i was thinking of a really dark blue as well that is well down the road i like to work on cars from the inside out of course starting from under the hood and working my way back then i will worry about the body and the body kit ect

P_Lav

Carbon fibre paint? Are you kidding me? Please don't rice out your car. RX7's deserve better. Main difference in the tII short block and an NA short block is lower compression rotors, and different ports on the tII housings (lack of the extra ports for mid range power on NAs). Best bet is to swap the whole s4 motor. But, firstly, don't jump into anything, learn the rotary first, drive your car, learn how it handles, and fix the major issues before you start worrying about extra power. I've been egging to do the same swap with my RX7, but do I NEED more power? No, its just gonna get me in trouble. I'm gonna do the supporting mods first, suspension, brakes, etc, then once I've got a good grip on how to actually drive my car properly, I'm gonna rebuild my engine, swap to tII rotors (my car already has street ported TII housings), and add all the turbo goodies from there, but not becuase its easy, but becuase I want to learn how to do it. Im just saying, dont get too far ahead of yourself, these cars take time to figure out.