I heard somewhere that this is possible...where I cant rememeber. Any info regarding if this is possible is greatly appreciated. I liek to leave my options open and don'get me wrong, I love the rotary engine and everything. I'm just curious.

Also heard about that V8 LS1/LT1 conversion too. Sounds also pretty interesting especially on a slick car liek the rx-7. Just wondering what you guys can make out of this.

SR20DET in an RX-7? Never Heard of it, but that would be pretty fuckin sweet :)

I think the LS1/LT1 would be a little heavy for the RX-7 and would probably fuck up the weight distribution pretty bad.

Yes, it's possible.. seen couple days ago it has 1000HP +!
go get this month issue of turbo mag for more information!

Originally posted by 1stock7
Yes, it's possible.. seen couple days ago it has 1000HP +!
go get this month issue of turbo mag for more information!

Sounds Interesting....Ill have to go pick up the mag today.

Nahh, that's the stupidest idea I've ever heard. Put something else in and save those sweet sweet SR20DET for us guys that want to swap one into a 240sx. ;) If I need one and they are all gone I'm coming after ya. :p

Originally posted by G-Forces
Nahh, that's the stupidest idea I've ever heard. Put something else in and save those sweet sweet SR20DET for us guys that want to swap one into a 240sx. ;) If I need one and they are all gone I'm coming after ya. :p

Ok G-Forces...it may be a dumb idea, but you have to admit that an RX-7 with an SR20DET would be a pretty sweet ride.

:D

The RX-7 in Turbo mag has a 2JZ supra engine.
Pitty you yanks didn't get the SR20DET engines in your 200SX (oops, 240SX) in the first place. I think its bloody strange how car companies have different set ups for different countries.
Like Australia only get 147kw in their new 200SX's, yet here in NZ and Japan we get 184kw, cool.

If you think putting a 350 in an fc3s is stupid and will fuck everything up got to engineswaps.com. I won't dignigy that remark with a response.

Originally posted by DigitalBoy
If you think putting a 350 in an fc3s is stupid and will fuck everything up got to engineswaps.com. I won't dignigy that remark with a response.

I looked at the page. Sure it would have alot of HP, but I still think "putting a 350 in an fc3s is stupid and will fuck everything up"

By the time your all done, you wont be able to drive the car cause u will be flat broke. Also, once you pop a sweet-ass engine in there, you are forgetting that the GB's in Mazda's arent very reliable, and they dont last all that long, especially with that kinda power behind it. Ud get maybe 6months [if ur easy on it] out of a GB with one of those big engines powering it, after that you better get some pliers, cause ur gonna be pulling chunks of tranny out of your ass. If you run it hard, you can consider a rebuild much sooner, and its not cheap. And if you are going to say to me "well then just beef up the GB?" that means more $$, and in the end, its still not gonna be all that solid of a GB.

Not that it wouldnt be cool to go for a boot around town with one, I just dont think its all that feasible. Even if I was super rich, id go and buy something just as fast, or faster, and I wouldnt have to worry about it.

My .02 for today

The engine bay on any of the RX7 series is exceptionaly wide, and has heaps of room for any small block V8. the 308 or 350 chevy make an awsome swap, the combo og high torque and light weight is deadly.

There is room to mount the engine far enough back in the chassis that handleing is not overly affected, infact the only problem is getting the extra torque to the road.

G/box strength is not a problem, as all the cars I have seen have used the manual or auto box that matchs the V8. However if you wanted to spend the money and get a custom bell housing made up im sure the stock RX7 box would handle a midly tuned V8 with out any trouble.

This is not an uncommon swap, however its not offten talked about as Rotory owners are sometimes very passionate, and dont like the idea of a rotary car being piston powered.

As for the cost? well its not as complex as you might think, espeicaly if you run the V8 on carbs. Basicly you need some custom engine mounts, and new end put on the Drive shaft. If your mechancaly minded and have access to a welder its a cheap swap.

i have an 87 rx7 with a 350 that has a ton of power. also a six speed tranny. everything bolts in nicely with proper kits. considering it has a fiberglassed wing, pearl white paint, tokico illumna suspension and a 152 db stereo, and turns everybodies head when i run a high ten second pass on a total of 15,000 canadian. try that with a very streetable rotary engine.

Ok. I retract my previous statement.

The LT1/T56 swap into an FD or FC for that matter is definately do-able. There's a guy on the RX7 forum who's been working on his conversion for a while. Granted he's going all out on his motor (he's loaded), but it's gonna retain the stock 50/50 weight distribution, weigh no more than stock, and have over 600hp. A place called Grandma's is selling a retrofit kit for V8's now too. $1500 for the kit.

The LT-1 and LS-1 swap for the RX-7 also isnt as heavy as most people think, since both chevy motors dont use turbos or intercoolers, the weight difference in actually fairly minimal. The V-8 swap in the RX-7 is the most practical thing ive heard about, plus you get better performance and gas mileage from a stock V-8 in the RX-7 than you do with the Rotary. Fuckin Awesome!!!! :smoka:

Swapping any cylinder engine into a Rex is retarded. It goes against the very essence of the car, for it was meant to have a rotary engine. The rotary keeps it uniqe and exiting. Call me a sentimentalist, but the rotary is the other half of the car, the first half being its beautiful curves.

I would try for a rotary conversion instead. Go get a 20B 3-rotor engine to swap in. Maybe a 4-rotor..... have not seen that done because the engine is rare. If anyone has seen it please post it. Anyway i know it would be expensive but it is very special and insanly fast. The 350 would be fun but nothing like that smooth high reving power a rotary produces out of its tiny displacement. In my opinion the recipricating engine got a huge head start timewise on the rotary and far more research. The rotary is an amazingly simple engine with minor flaws which could be eliminated with more research. Check out the renesis rotary in the upcoming rx-8 which is proof what research can do.

riciprocating engine = coverts up and down motion to circular motion, and any conversion reduces output.

rotory engine = doesnt have to convert. It uses a circular motion for power.

I own a 83' RX-7 GSL and love my rotary to death, the only problem is that im a 500 miles shy of 130K miles on the original motor!!! That is the main reason why i have been looking around for engine swaps for my RX-7, i have considered having my rotary rebuilt, but the 12A just doesn't have the power im looking for. Its easy for all u 13B and 13BTT guys to add more power, but not for me. It is a sin to stuff a piston engine under the hood of my car, but get real, a 12A isnt gonna do shit for me!!! I have thought of putting a bigger rotary in too, but it costs more to do so than for me to put a 5.0L Ford V-8, and i would get better performance, torque, gas mileage, and potential with the 5.0L! Sorry to say that the rotary dream is dead in my car, but my pinkslips will make u smile from ear to ear, once my project is finished!!!:flipa:

4 rotor? woah....that would be like....what....2.6 liters? gas guzzler to say the least, but that would be one crankin car.

While the 20b conversion is very nice it's also very expensive. To have a competent shop do the conversion it'll run you about $36,000. Check out www.pettitracing.com and www.pfsupercars.com Both have done them, Pettit more so than PFS though. They sound incredible, but at least in the Pettit Banzai it involves moving the steering rack thus jacking up the steering geometry and creating bump steer. PFS's latest one remedied this by moving the firewall back and sitting the engine farther back in the engine bay. This also pushed the tranny back and so on and so forth. I sat in the car a few times and it's not comfy for me since I'm 6'4" and the shift lever hit me at my elbow. To my knowledge that particular conversion (which was in last month's Road & Track) cost at least $75,000, but it was a work of art. Anyway, the SR20DET swap might be okay, but hell might as well go with an LT1 or something and get tons of aftermarket support and parts. www.grannysspeedshop.com makes a bolt up kit of them for $1500 plus the price of the engine/tranny which you can get out of a salvage yard pretty cheap I"m sure ($6k or so). Sounds like a good option to me, but it just wouldn't quite be an RX7 w/o a rotary.

Originally posted by warrior4jc
Go get a 20B 3-rotor engine to swap in. Maybe a 4-rotor..... have not seen that done because the engine is rare. If anyone has seen it please post it. Anyway i know it would be expensive but it is very special and insanly fast.
http://www.monito.com/Images/mb4rotor-h100.jpg

the 4 rotor was never really released for any of us to get our hands on...all the models were completely experimental or for racing. there was the mercedes c111 that never came out which had 4 rotors. it was 2.4l and was 400+ hp, also there were some 4rotor tractors and shit- you can read it yourselves

http://www.monito.com/wankel/engines.html
http://www.monito.com/wankel/mercedes.html

aw yea i forgot to say the idea of putting a piston engine in an rx7 is completely immoral

Originally posted by RX7_4_Eva
Swapping any cylinder engine into a Rex is retarded. It goes against the very essence of the car, for it was meant to have a rotary engine. The rotary keeps it uniqe and exiting. Call me a sentimentalist, but the rotary is the other half of the car, the first half being its beautiful curves.

Amen brother.

Tiem to come back after 2 months of downtime. Well guys...sorry for the initial post and if I could, I woudl change the title to say something about doing the V6 Turbo Buick vert of the Chevy n/a V8 vert. Either are great prime candidates. But when someone mentioned somebody doing the vert on rx7forum, I'm pretty sure that you were talking about jimlab. Yea I had some discussions with him and have to honestly say that I can't wait until he is done with the conversion. Looking forward to it. Enough rambling for now. I'm prolly aint goign to get an RX-7 first though; it was never meant to be your 'only car'. And i'd rather have a 240sx or mr2 turbo as my daily driver anywho :D.

Yeap Jim's the guy. His car is gonna be mind bending when it's ready.:D Another guy I heard that is either gonna do it soon or is already in the process is Nick Reifner of N-Tech Engineering (www.n-tech.net). I'm sure his will be sweet too. There was a company that was doing the Buick GN V6 swap for a while, but I haven't heard much about it for quite some time. They used to have an ad in the back of mags like R&T and C&D, but this was a few years back. I'm not sure how they turned out though. SP Engineering did a conversion using a 2JZGTE out of a MKIV Supra TT and modded the crap out of it (twin HKS ball bearing GT series turbos good for about 1000hp). It's not finished, but it was featured in last month's Turbo mag.
You're right though the RX-7 is definately not an everyday car...well at least not the 3rd gen. 2nd and 1st gens are overall quite reliable, but since they're rwd they pretty much suck in snow and rain. I'm glad I kept my old beater Honda Prelude as my daily driver or I would've been stranded for a looooong time w/o a car after the engine crapped on me.

www.pineappleracing.com has a 4 rotor right now. they are known to be on of the best rx-7 tuners in the US.

here is a quote from their web site:
"Engine building starts with the intended application, owner expectaions, and budget. Pineapple Racing is capable of building almost anything you can dream up, from a tame, non-turbo street engine to a high-boost, nitrous injected drag racing motor to a 4-rotor monster (yes, one is in stock and ready to build to your specs). "

Pineapple Racing has a very good reputation for quality work. Too bad they're on the opposite coast from me otherwise I would've considered them to rebuild my old FD's engine.

i'm wondering where they got the 4 rotor...i'm guessing they put two 13b's together

Most likely that's what they did. Mazda only produced 2 rotor and 3 rotor models from the factory other than their racing n/a 4 rotors in the 787B LeMans cars. The main thing that becomes an issue when making multiple rotor engines is the eccentric shaft. The longer it gets the more likely it is to flex under power which is very destructive. Just imagine taking a long thin stick and wiggle it and you'll see what I mean. There's a guy in Australia called The Hitman who built his own 3rotor single turbo for his 1st gen. I believe he's a tuner so I'm sure he's done it more than once so it is possible to make a multiple rotor engine, but just imagine the cost:(

awwww the sigh of dis belief. heres a reply that will answer most didpute on this post.a small blok chevy will only upset the cars wieght balance by a little. so samll a difference that you wouldnt notice unless you are an f1 series race car driver.but for the average street racers/autocrosser its unoticable.now people dont always buy a fd because of the rotory some buy it cuz its a kik lookin ride. some people love the car. but comin from a person who has owned 3 fc and a current v8 fd a rotary engine stinks. unless you have unlimited cash or can build a race 13b yourself you dont need to own a rx7."originality stands alone" puttin any motor that makes more power into a car where it doesnt belong is dope.i love my fd and no it is cheaper to do a v8 swap than to build a reliable 350hp rotary. my swap cost me 5 grand.and my motor puts out 400hp and 423lbs of torque. you would have to spend 5 grand just to get a rotary up to that level reliably.i love rotary's but there so sensitive and are not made to be modified from the factory setup unless you build the motor first. and another thing one guy said you would be burnin up trany's with a 350. when you swap a motor you have to put a different tranny in.now im not fond of american cars but i love the fact that i had 6 different choices for my tranny. i went for t-56.i drive my car 70 miles bak and forth from upstate ny to nyc every weekend and i havent had a problem yet. couldnt say that for my rotaries not even my n/a's. dude i know there are die hard rotary enthusiast out there but dont knock someone whos states they obvious. im wayne brady bitch!!!!

1. your all queers

2. 4-rotor engine are out there, an you can get your hands on one, you just have to be loaded with cash

3. if you swap a POS piston engine into an rx-7 then your queer and stupid

4. your gay engine will probably offset the 50/50 weight distribution of the rx-7 since a rotory is so small and even a 4cyl engine is huge compared to it

5. to the idiot that called a 4-rotor a 2.6l, the 13B has 2 rotors and they say its about a 2.6l... ok for simplicity sake, take two 2-rotor engines, both at 2.6l and add them together... what do you get? well it sure isn't 2.6 still now is it? ok for those of you that failed 5th grade math it would be like a 5.2, but that could be different depending on the engine, I'm just saying that it wouldn't be a 2.6l

6. the didn't put two 2-rotors together, that wouldn't work because the design would be way off... they had to fabricate a custom 4-rotor engine, but it is the same design as the other rotory engines

7. just get a 20b if you want something different or your just rich or whatever, or you could build up a 13B-REW

8. the SR engine is trash, if anything use a KA then rebuild and turbo it, the KA is a MUCH stronger engine, the SR is just cool cuz its japanese, like it makes a difference...

9. this post is long and I probably pissed some people off

10. I hope I pissed some people off

11. say some more stupid stuff and I'll post again later...

im wayne brady bitch!!!! :lol: :lol: :lol:


Hey cmon though, this thread is 4 FUCKING YEARS OLD, , , let it die.

I found an s4 T2 here in wichita soyo, I wrote down the info for it because I thought you might be interested, it is immaculate except for ine dent, and its an easy one to get to.

thanks, I may be getting an S5 TII from jims, if I don't I'll PM you for the details

Damn soyo, whats with all of the spitfire?

honestly, I just thought it was funny :)

lol I guess im the only one that reads Modified Magazine. Any way yes they have put an Sr20 in a FD and it runs a 12 sec quarter mile at 400hp. still has 50/50 weight and was also cheaper then rebuilding the rotary. all the guy did was remove some useless metal around the baby make a custom engine (cradle I guess) or some crap and custom mounts. When in there like a glove and is reliable like a toyota.

:bs:

I dont believe that is cheaper than rebuilding the 13b.

They probably aren't counting parts that they manufactured, that might explain it.

I call bs too :bs:

You guys know that you can get alot more power out of the rotory engine just by opening the ports, also 350 engine and tranny are easy to come by.

hey cool thanks, never new that!






leave now...





I'm serious

^lol

That reminds me, theres suppoesed to be some shop in Hawaii that has a s2000 engine that they're gonna dump into an FC. I dont remeber where i heard that from.

I no longer like Hawaii, I never really had a preference on it before I guess, but now I don't like it at all...

It tuns 10's. Here's a link.
http://www.importfan.com/product.asp?3=4393

I don't know...I don't know about running 26 psi on a street car, but501 horsepower at 26 psi? That doesn't seem to impressive to me. They should do a back to back test SR20 vs. rotary.

Do NOT EVER EVER PUT A POS V8 IN YOUR MAZDA !!!!

TOP 5
**********************************************

5 - Go buy a 3500 lb firebird/camero - there are LOTs of them.
4 - God didn't make RX7's with pistons for a reason
3 Your car will handle like a school bus on ice.
2 - A 13b rotory will put out 400+hp with 500$ and a little know-how
1- People will hate you !!( at least that is the impression I get from people flipping me off in my rear veiw mirror...) :evillol:

4 - God didn't make RX7's with pistons for a reason


<----- Died laughing

4 - God didn't make RX7's with pistons for a reason


interesting point of view tomminajar. I like it. :)

seriously, thats the best part of the rotary... your standing around a bunch of guys talking about their muscle cars with forged piston or whatever(obviously I know nil about pistons haha) and you can just be like, well my car doesn't even need pistons. just that one statement makes them all curious, its like some miracle of science to some people that you can build an engine without pistons or lifters all that other stupid engine junk haha

one time a guy at school bet me a hundred bucks that I had atleast one piston or something else I forget what it was... anyways I printed off the howstuffworks.com rotary section... I never got any money but he sure felt dumb :)

I like the rotary engine since it is unique, simple, and can make power. Those come together and help make the rx-7 the car it is. Taking that away you change the car. Other cars handle engine swaps just fine. Pistons for pistons. You take the rotary from the rx-7 and you take away it's identity.

You take the rotary from the rx-7 and you take away it's identity.

exactly... if it wasn't for the rotary I wouldn't be looking for another rx-7

It would completely ruin the weight distribution, weight of the car, cornering and braking. And for what? the 13B is already a heck of a powerplant...

First of all... Im not trying to piss anyone off.... God didnt make the rotary or the rx-7 .... man did..Just like he made the pissed on engine... Second...Ive yet to see any 13b make 400+ hp with 500 dollars... hell... with a fmic fuel cut defencer full exhaust thats well over 500 right there... and your making maybe 350 hp... to the crank.... I have an 86 rx-7....The motor is dead... and i dont see why i should even attempt to swap another rotary in it again... I dont like spending large amounts of money for something that even when taken care of is still tempermental, Just because a v8 is an "inferior" design doesnty make it a piece of shit...and 3rd, I dont like hawaii now either.

you guys are just pissed off b/c your shitty ass simple engine doesnt work as well as engine with over a hundred moving parts. Yea yours is unique but as soon as you turbo that rotary it goes kaboom. You guys do not understand true power or even the word TORQUE, if you guys are calling v8's pieces of shit. my 305 v8 rx7 will whip the shit shit out of your rotary seven. And have any of you ever ridden in a V8 rx7? of course you havent or you would know that they still handle great. and SOYO you are just pissed b/c your rotary is just like your dick......SMALL.

ok, you know nothing about rotarys obviously...

the turbo engines work fine, sure they need rebuilt at about 100k miles... nearly all turbo engines would so that has no affect

torque isn't all its cracked up to be either... look up some torque numbers for bikes and then go race one, yea you'll get torn up, so torque is not much of a factor

go meet dayna or jims out at a autox track sometime, I'm sure either of them would be glad to take out their 7's and stomp you

insulting me by saying I have a small dick huh? big man aren't we! is this junior high? have no arguement so you just put the other person down? oh and please, tell the nice readers how you would know that my dick is small? have you met me? do you know me? have you pulled down my pants and sucked my dick? ok since those are all no's, you don't know jack so stop acting like your 12.

now just leave already and go talk about your V8 somewhere else... seriously, we don't care about it, even if it had 3,000hp we wouldn't care.

ok, you know nothing about rotarys obviously...

the turbo engines work fine, sure they need rebuilt at about 100k miles... nearly all turbo engines would so that has no affect

torque isn't all its cracked up to be either... look up some torque numbers for bikes and then go race one, yea you'll get torn up, so torque is not much of a factor

go meet dayna or jims out at a autox track sometime, I'm sure either of them would be glad to take out their 7's and stomp you



I know nothing about rotarys? hmmm, thats funny. Have you ever rebuilt a rotary? I have. I also just wrote a ten page paper about the rotary engine. I also know they are pretty cool engines. They are not everyday cars with rotarys. They can make great power but how long is that engine that is boosted to hell going to last. Yea I got a buddy with a 3rd gen that has had three different engines in his FD......it has 110,000 miles. Torque is nothing???????? For a motorcycle maybe not but we are not talking about motorcycles you tard. Those bikes also weigh what 500-700 lbs. What does your car weigh? you need torque. low end torque is nearly non existent. Did I say I wanted to race those guys I said you. I have stock carbureated 305 in my 7. I will race you on a track, drag or autocross.

yea you wanna race me cuz I have a non-turbo and the car is wrecked... when I get a new car I'll be happy to once I've had a little time to get used to it. well its possible to get an FC down to 2200lbs and still be street legal, anyways I was just using that as an example. but seriously you can build up plenty of torque to get you moving... anyways the engines can last plenty long, just depends on the quality of the engine, the miles, and how its driven and taken care of... he should have just rebuilt it the first time and he wouldn't have had all that trouble...

anyways I don't have time for this...

if your car was a turbo you would beat me, If you ever get it to 2200 lbs. you would beat me, if you take care of a rotary it would last? IF, IF, IF

Well if my aunt had a dick she would be my uncle.

Ok this has passed the realm of pointless. Can we drop it now? Both engines have their perks. Lets just leave it at that.

:werd:

The problem comes in the fact that rotary purists have a rather religious view of a mass produced mechanical device, and start attacking any non-rotary conversion to their favorite cars with what usually amounts to insults about intelligence, inaccuracies about facts of the various conversions, and a wonderful forgetfulness of their own positions.

Case in point: a stock RX7 TII is a great car. Fast and handles wonderful. But it has a different weight balance than a stock GTU that has no A/C or turbo plumbing. And that difference is about the same as teh differnce when a conversion is done.

Soyo likes to say that well, if you move the battery back and improve the balance by 80 lbs total, you could do teh same to a TII. Which, whole true, forgets that if the stock TII works so good, an dthe converted car is balanced like the stock TII and weighs the same or less overall, then it logically follows that it isn't ruined anymore than a stock one is. The fact that you CAN lighten a TII is immaterial to the argument that the same chassis with the same weight and overal balance will work as good.

http://mywebpages.comcast.net/cvetters3/rex1.MPG

Most of us who have built various conversions have been accused of hating rotaries, of being rednecks, of not respecting the religion of teh rotary engine. That we've removed the soul of the cars.

None of it is true. Most of us have had a number of rotary cars over the years. Most of us like rotary cars. but they are still cars. mechanical devices made by man. And when there is a dead one sitting in a pile, ressurecting it is just an excersize in mechanical reconstruction.

A rotary engine sitting in the driveway with no car around it is not an RX7. But an RX7 sitting in the driveway with no enigne in it is an RX7. With all that implies about the quality and construction of the chassis, suspension, ergonomics, styling etc. And none of that changes with the introduction of another powerplant. Just like '65 Mustang fastback with a 20BTT would stil be a Mustang (and a damn cool one, at that!)

:screwy:








why can't people just buy a car with the engine they want, or atleast stay within the same manufacturer... whatever I still don't agree, so don't even waste your time arguing with me

well i helped build the sr20 rx7 and it just didnt seem right everytime the rotory let go it was 5000.00 and after 5 6 7 of them it was to much some or the motors had 150 miles on them and would just let go and we would sent the motor back and they would say we dont know what happed here is another one for 5000.00 so not do something diff we asked after the man flew out from texas to look at was going on and rebuild it again and he watched it blow up on the dyno. so now that he had over 50,000 in to the car with nothing to show for it something had to be done and that is how it came about

dude... did you seriously need to bring this post back? it was already brought back once earlier this year... if you didn't notice, its from 2001!!!!!

who's runnin this site? i mean, how hard would it be to set up a protocal to lock all threads that haven't been posted on for like 2 weeks or something? no offence againts webmaster or anything, but seriously, it's easy and effective.

I wouldn't say 2 weeks, maybe a month though... that would be nice