iamsisyphus

The 13b REW just doesn't work for me. The handling is what makes this car great. The convertible is already heavy and the REW adds the weight of two turbochargers etc. In addition, every reliable source says that this engine, with its miles of vacuum tubes, is not very reliable. Moreover, it would not be legal in NH. Any modification would have to be OBDII compliant not just pass the sniff test. This engine was not OBDII compliant, that's why Mazda stopped selling it here. I suspect that, although it passed the sniff test, it's not legal in CA either, but you can consult your lawyer about that.

Iamsisyphus

TitaniumTT

That's cute... silicone vacuum lines does not an unreliable turbocharger or motor make. Besides.. if you searched enough between the lines you'll find that all of the problems associated with the twins are easily remidied with a TIG, some AL pipe & a call to Mach Seven Motorsports. I'll gladly prove you wrong on that one. Stroll over to 3rd gen section and see what some of those guys say about the twins. Give me till next saturday & I'll get you a weight too. Probably not much more than the 30lb battery infront of your wheels.

I should also mention that the twins are also good for a stout 350 RWHP..... Renni is what? 1/2 that?

Besides.. if you're so concerned, why not wait 2.5 years? Then the 86v models will be beyond that 25 year Fed cutoff.

RETed

Don't you just love it when people talk **** about stuff they haven't done before?


-Ted

TitaniumTT

When I read it I could swear it read, "I went from a 13B to a 20B and LOST weight... All I did was change the motor." That's what I read. That's why I harped on ADDING rotors & housings & irons, lengthing e-sahfts, more coolan, oil bigger exhaust/intake mani etc etc.

If his post had been edited, oh well, we'll never know. If I read it wrong, FU - I'm human

F1blueRx7

iTrader: (5)

Check your power to weight ratio on that guesstimate and you'll prove yourself wrong. Also, Search please.

Your OBD II preaching is really falling on the wrong crowd. Like I've stated before not many users on this board are interested in Emissions compliancy, in fact many of the Rx7 models are beginning to fall under historic guidelines, e.g. Maryland. With historic tags, inspections and emissions no longer apply. This means you can put any motor in the car regardless of emissions standards, and I consider Maryland a HIGHLY aggressive state in regards to emissions laws.

iamsisyphus

All I can say is every source I have seen says that this engine is unreliable. Run a nexus search. They blame it on miles a vacuum tubing being susceptible to leaks. There's another guy here that says he swapped a 13bREW for a 20b and the car lost weight. Either way, it's heavier than the Renesis which was designed to be substantially lighter by reducing the thickness of the metal and by substituting plastics. My physics teacher would say that you can make a better car by reducing weight.

But this isn't about the relative merit of the Renesis. You knock yourself out with what you want to do with your car. Do you know how to put a Renesis into a FC convertible? That's what I want to do with my car.

Iamsisyphus

iamsisyphus

Who's preaching? What I've said is the reality in my state is that an engine swap will have to be OBDII compliant. That's the reality I live with. I'd like to make my car more efficient and more responsible. I think swapping in a Renesis would help me achieve those goals. If there is anyone on this site who has any information that would help me accomplish this, I'd like to hear from them.

Iamsisyphus

iamsisyphus

One other thing. Power to weight ration does not change the physics of changing the direction of travel of an object. If I was concerned with straight line speed, I'd have bought a Mustang or a Corvette.

iamsisyphus

I only know one person who has driven a 20b FC. He didn't own the car so he didn't have to justify his $15K investment. He said the engine was mounted forward and it handled like a pig. S'all I know.

Iamsisyphus

TitaniumTT

1) Miles of vaccum tubing (& in reality it's closer to 10-15') don't make them unreliable. The motor is way more stout than a renni. A few pounds in the front behind the wheels, if you're sooooo concerned with that, your bag is empty. I could give you plenty of suggestions to balance the car and return the balance. A few pound in turbocharger parts, gimme a break. Unless you're tracking the car and driving 110% you won't notice the differece. Now, that would be illegal too.
2) Corvettes handle well, mustangs suck. My goal is to whoop up on my father-in-laws Vette.
3) If that's your car in your avatar, you're breaking the law right there.
4) I doubt you'll get to enjoy the best part - 6 spd

Way to triple your post count btw. I guess I could have made 5 instead of 1 but this is neater

RETed

Dude, you like to regurgitate a lot of other's people info, but have you done a 20B swap into an FC?
Cause me and j9fd3s both have done it.


-Ted

NZConvertible

I wouldn't even consider that as an option. Honestly, how many 20B FC's are running around without a front sway bar?

slo

iTrader: (1)

I'm pretty sure that your state doesn't require OBDII, CA is reputed to have the most stringent emmisions, and they require one of 2 things. Either any engine which that car came with as oem for a particular model year in smog legal form. (a turbo 2 FC swap falls into this category except for the 86).

Or any engine the same year or newer but it must be tested by the smog referee.

Ive had both engines out the rew doesn't way much more than the engine it replaced (S5 NA) the turbo setup itself with all the cast iron bits is well under 50 pounds.

Internally the rew is the most stout rotary engine masda ever mass produced

Externally its a bit complex but it would be far easier and cheaper to make an rew reliable than to swap in a renesis

F1blueRx7

iTrader: (5)

Well, I think it's great that you want to be a great citizen and what not.

I also think that since the engine you want to put in your car isn't from a 2nd generation car you should probably make a thread in the "Other Engine conversion" forum, and watch it never get any replies because no one has done this before keeping OBD II compliancy in mind.

If you decide to do this, you're going to be pioneering something that hasn't been done. You need to plan every aspect of the install from mounting to wiring and fuel. It'll be expensive, double so if you don't know how to fabricate or work on 12v automotive electrical systems.

I hope you know what you're climbing into.

TitaniumTT

Dude, You're not to reading what I am typing (actually NO-ONE has)& you like to post useless crap. That post above falls into the category of

OH
MY
GAWD
*Sigh*

It adds to nothing but your post count. What helpful knowledge is in there?

Would you like a pat on the back for doing a 20B swap? well WOOOPIDIDOOOOO!!! I said above - No one seems to pick up on that. 13B -> 20B does not equal weight reduction. I posted - Bag of **** because I swear he posted that he did a 20B conversion, changed nothing but the motor, and lost 40lbs. Right or wrong that's what I read. I'm aggreeing that a 20B weighs more... damn. Let me repeat.. I AM AGREEING THAT ADDING A ROTOR/HOUSING/IRON ALL THAT INCREASES WEIGHT. What's the problem here? Oh wait I know, people aren't reading what I'm saying. I either read j9fd3s' post backwards, or he edited his post. Do you think posting 11 times a day intimidates me? Or that doing a 20B swap impresses me?

I'm not regurgitating anything btw.

iamsisyphus

Reading comprehension apparently isn't strong suite for you, why should I expect better logic?

1. Reliability is the issue, not the precise length of the vacuum tubes. I have read innumerable (that means more than you can count) that say this engine is unreliable including Ancas and Sport Compact Car magazine. Nothing you provide refutes that.

2. Huh?

3. As in everything else, you assume way to much. The road is closed and the car is not moving. No laws broken. Nevertheless, I have been very clear that breaking the law is not the issue. The issue is being stuck with a car that I can't operate on the public ways once I get caught. Driving with an unregistered uninspected vehicle carries a penalty.

4. I don't look on the 6 speed as a good thing. You would know that if you could comprehend what I have written. In my initial post I said I wanted to mate the Renesis to my current 5 speed to take advantage of the taller gear for highway cruising.

5. After all of this, I'm pretty sure you don't know much about anything (accept slinging insults) least of all, how to swap a Renesis into an FC. If you have information on that subject, that's what we're looking for.

While your filling your bag, maybe you'll run across some helpful information. If you do, please post it.

Iamsisyphus

Aaron Cake

iTrader: (1)

OK, let's get this topic back on track.

The topic was looking for information on swapping a Renesis into an FC, not opinions on why it should or should not be done. Now we're moving more off-topic into the 20B and some posts are getting close to breaking forum rules.

Please keep all further posts on topic and helpful. If the topic continues the way it is going, it will be locked.

Thanks.

melicha8

iTrader: (1)

OMG rx7club is full of tools

TitaniumTT

OMFG - It's like little children on a playground. Innumerable = more than you can count, thanks for that tip. Here's one for you. If you have to ask, don't do it. I'll be looking for the "innumerable" I need help with my swap threads.... Talk about the pot calling the kettle black.... slinging insults... right. Once again I will say, it's not the vacuum lines, do you have experience with a 13B-REW? How about the turbo's themselves? If not, all you're doing is regurgitating information. If you're going to rely so heavily on two sources, find better ones.

You talk about the motor being unreliable, aside from the ports and a few other differences, the renni is very similar to the REW. When you sy motor, I think internal. Now the renni has alot of crap that the REW doesn't that could potentially make it unreliabel. Drive-by-wire anyone. Good luck, you're going to need it, along with a welder, brake, plasma cutter will probably help, a couple FSM's

This has turned into a complete and utter waste of my time. I don't need to justify myself becuase a few people cannot read my posts properly. If I misread j9fd3s' post, sorry. On the topic of reading comprehension though... YOU havne't read a thing that I've wrote.

iamsisyphus

It appears you are correct that CA is tougher than NH. I have found no reference to being able modify a car if the end result in OBDII compliant. It appears that, in CA, if you modify the car from factory spec, the police may impound the car and you will be required to prove to a referee that you have returned the car to factory spec using OEM parts.

Here's a link which will give you a quick overview, but is not as good as going to the statutes and getting it from the source.

http://answers.google.com/answers/threadview?id=159549

There are a lot of urban legends about what is and isn't going to get you a car you can't drive. In this part of the world, using the latest in rotary technology to obtain OBDII compliance seems the sensible way to go. Do you know anyone who has installed a Renesis in a FC?

Iamsisyphus

iamsisyphus

That would be "I've written" or "I wrote" but under no circumstances "I've wrote". But you did finally come to a correct conclusion. (Probably by accident and no application of logic.) You are wasting your time. The person who started this thread and I are looking for information on how to install a Renesis in an FC. We have our reasons.

You excoriate me for relying on sources that disagree with you without personal experience, but you have no problem telling me how hard my project will be without ever having done it yourself. Have you a negative experience with drive by wire? Have you a source that would say drive by wire is a problem? In my research, I have found none. I do not take into account much of what you have written simply because it is irrelevant. If you have any information on how to implant a Renesis into an FC, I'm all ears.

Iamsisyphus

slo

iTrader: (1)

your making allot of assumptions in all your posts that are incorect. Just because the rew is unreliable in stock form doesn't mean it can't be made reliable wile still maintaining smog legality.

Yes CA is tough on smog, but any state will let you do an engine swap to a newer engine, if you retain all of the factory smog controlls for the newer engine. 13b-rew's where before OBD2 was mandated and never had OBD2 so there is no OBD2 requirment with this swap. there are allot of parts which the CA BAR has decided don't affect smog. My car is legal with an intake (has a carb number) an intercooler (doesn't require one), a cat back, and "performance" cats in an ebay downpipe.

somehow I don't think you have the technical ability to swap a renisis or any engine into your FC yourself.

Bring your car to me, i'll do it or say 15K.

Roen

iTrader: (2)

technically, under federal law, all engine swaps are illegal =P

TitaniumTT

depends on the age of the car

Mutaku

Summary of this topic


Swap has not been done and no one has information on it. If you want something that has more information on how to be done refer to 20b Section otherwise anyone who does this swap at this point would be the one with all the information. I would imagine that you would need to fabricate mounts and figure out if you can use the Reni transmission or use a TII transmission. If you plan on swapping in all its entirety without modification consider keeping the rx-8 ecu.

If I where to do this swap I would keep the stock manifold and consider finding a way to modify the exhaust port for better exhaust flow and velocity. If you plan on doing this swap for a performance I would wait on it until people start figuring out how to get more power out of the motor. Then again you can always do that with the swap as well.

In conclusion no one has done it so there is no info on it.




with the 25 year cutoff I thought they stopped it at 75 and they will no longer be doing the exemption past that? or was that just CA that is stopping it at 75?