i would put a straight six in My 7 if I didn't have a rotary.
probably from a supra

If I had the money, I would just buy a 240 and put in a skyline six. (RB26DETT I think)

Haa-hahaa-haahaaaaaaaa!!!!!!!!!!!

Demon rx7, If you hate Rotarys so much and claim their drivers have no male genitalia, Why would you even be on this forum??? I would think you would be out trying to find out which car drivers could shove their V8 cock and balls in your face.

Thoughman, I was in the process of flaming, but you seem pretty cool.

My opinion:

I like other engines than rotary, I like inline six cylinders. I like boxer four cylinders. The fact is: per displacement, most imports kick the hell out of american made.


rotary
|
V
:puke: V8

I like just about every kind of internal combustion engine known except for Harleys. I have to agree that the imports historicaly have been superior to the american stuff when it comes to small displacement engines but I think those Yanks are catching up. When it comes to bigger displacement engines, I favor imports as well but they are just too expensive (even used) to be cost effective(in a swap). Here's my BMW 740i. Only 4 liters from its V8 but it puts out right around 300 to the wheels with nothing more than a Dinan chip.

http://www.personainternet.com/~www2...ght%20side.JPG

I must admit that some american iron is making similar power. The 3.9 liter V8 in the Lincoln LS comes to mind but that's a relatively new car and my Bimmer is now ten years old! American automakers always playing catch-up.

Toughguy :)

Hey Toughguy,
If you're that much into engine technology you might want to punch "Dynacam Engines" into your computer. Here's a powerplant that's certified for aviation use, weighs about 300lbs, puts out 200hp at 1800 rpm and 650 lb-ft of torque at 1200 rpm(!)
Dimensions are about 3ft long and less than 1 ft in diameter. It uses six double-ended pistons travelling parallel to the main shaft and acting on a sinusoidal cam attached to the shaft at the center.
This engine has 50% fewer components than conventional piston engines and since it fires 12 times per revolution it's as smooth as a turbine. In other words, it combines the best qualities of both piston and rotary powerplants into one engine.
They're manufactured in the states (Torrance, California) and have been extensively tested by the US military and at least one city in transit buses.
Too bad the price for one of these is around $50,000 per copy...

If it's fast, it's good :)

Aviator 902S your a Dork! You make it sound that the Rex is the most awsome and most expensive car in the world? Hey I was told this is where we post for V8 forum. You sound like a broken record ya Nut!

Expensive?? Uh, no. Just unique, simple, smooth, and even better as an aircraft powerplant than it is in cars.

Broken record? Yup--- and worst of all, I don't give a fuck.

:cool:

Dork? Absolutely. Ugly too, and old, and not rich. But somehow astute enough to be married to an intelligent, well-adjusted, drop-dead gorgeous asian girl 12 years younger than me who I can barely keep up to. (but it's sure fun trying! :D )

As for this being the official forum for pro-V8 conversion folks, nope--- it started as a debate, with input from both sides of the fence. (There's an idea--- let's bug the moderators for an official piston-conversion rx7 section).
If I didn't like rotaries so much I'd be the first to drop a kick-ass V8 into one, because these cars are so light and make the perfect platform for just such a project.
Problem is, I DO like rotaries.
But I respect your right to disagree with me.

*double post*:doh:

I want a drag car........and i want it to be a se7en......

so for the money i wanna spend, its lookin like project RX-v8 is underway....

its okay kuz ill still be spankin the ricers at the track in the TII!!

haha.....i still drive ma weedeater[1.3Lt of pure lawn mowin FUN!!] on a daily basis. so i gues the RX-v8 will be for the "cold days" hahaa

i guess the best question would be how to gain back the weight difference. with a 350 v8 u can set it back wich deals with very little but maybe buying a lighter hood and fenders would lower it closer to 50/50 rather than 75/25.

Just to put in my $.02...I did the ls1 conversion because when the rotary blew I had two options if the rx7 was to keep the rotary. (the wife and I discussed and agreed)
A) sell it as parts
B) fix the wankel and sell it
We couldn't afford another blow at around $3k for a good rebuild. And I understand what is said about ' if you can't afford to run the rotary you shouldn't have one'...so that is where option three came in...sell all the performance stuff from the rotary and do the ls1 swap.

Seeing as how I love the look of the FD and I couldn't find any car I like the looks of for the price I would sell it for, Then we (the wife and I ) agreed I could keep the car.
So I sold all the parts, it covered the whole conversion (and the extra ls1 engine I got ripped off of).
So I get to keep the looks of the 7 which I love, and I don't have to worry as much about the engine. And I get better gas milage. Which I understand with a rotary some people get good MPG and others don't and either way they don't worry about the price...but I am married to an economist so I have live in the world I am part of :D
So for me it all boiled down to wanting to keep the looks of the rx7 and not having to put a lot more time an money into the rotary after it blew.

Renagade Rotary - Can you point me to the source you're citing when you talk about that 75/25 weight distribution? Because I think you're just spouting more Rotard bull$h1t. I've read every post out there talking about FDs with LS1s and I've never seen a huge weight increase like that before. So where are you getting those numbers?

Out of his ASS!

Toughguy :)

The whole "perfect" weight distribution thing is all a farce anyways. A first gen RX7 sitting on corner scales with no driver or passenger and no fluids in it will come in at that much ballyhooed 50/50 balance. My 1st gen can hold 55 liters of gas! Do you know how much that weighs? Much more than all the fluids under the hood that could potetialy balance it out that`s how much. The 50/50 this is not only an absolute fallacy for a car in road trim with a driver aboard but also a complete farce. What`s the weight balance of a Porsche 911? They don`t seem to fare to badly now do they? The "perfect" weight balance is not the end all be all factor that determine`s a car`s performance capabilities and certainly not a true measure of a car`s potential.

Toughguy :)

All true. Say what you want about V8 conversion short-comings (if any) but weight distribution problems aren't a concern. At the very most, a V8 *might* throw this balance off by 10%--- hardly enough to have any substantial adverse effect on handling, especially on a car with the 1st gen's low center of gravity and abundant roll stiffness.
And this from one of the pro-rotary guys...:cool:

Wow... You've got some of the most well thought out, mature opinions I've seen on this board! :) Pretty refreshing.

I will chime in one additional bit, most V8s, even all iron (like the L98 I'm going to be putting in) don't weigh enough to upset it more then 3-4%, to go to 10%, you'd have to add like 250 lbs to the front end. :) And as I understand it, in a FC, an LS1, properly done, and with an Al hood, and remote mounted battery, can actually weigh less up front, then a TII does stock (with steel hood).

I know that I'll be upsetting the balance a touch in my car, but slightly stiffer front springs and sway, and a little relocating of stuff, and I think I'll be quite fine in the handling department. HOPEFULLY. :cool:

I was just wondering digitalsolo, you say your 'going' to get stiffer springs, but how much actually needs to be changed out??

i have an '86 luxury i use for parts since the fire:sad:. i have thought about a V8 conversion[mainly because i can get a 'built' 350 or 305 for nothing!!]

Well, I already have TII front struts/springs, so they're a bit stiffer then the LC springs already, but I may go to a performance lowering spring (also stiffer), or get some Tein or similiar coil overs, where I can choose the spring rate. Either way shouldn't cost TOO much, especially considering the handling increases I'll gain-

JOEP, here's what you do...

Put your SB into the Mazda. There is NO substitute for low end torque on the road when a WS6 or SS pulls up next to you. And to make to rotory die hards happy, take the "piston" motor out of a go cart and replace it with your 13b motor.... now you'll have two of the fastest "cars" you've ever driven!
And if some guys have really got you worried about a V8 messing up your handeling (which it won't if done right) then put a 3.8 v6 turbo buick motor in your mazda!

Actually, if memory serves me right, a T56 + LS1, weighs about the same as, if not LESS then a Buick 3.8 Turbo and 200r4. Ask GNX7, he knows-

I just threw that buick comment in there cause too many people seem to equate 8 pistons with tons of weight, lol... and also I own a turbo regal.

But I just got to wondering, how much is an LS1 motor? (I know they're pretty light, the only reason I'm not putting one in my rx7 is because I already had another motor laying around.)

Also, I know some guys just came out with an all aluminum 3.8 [turbo buick] block that should support up to 2,000hp... it cost 3 or 4 grand though. However, if everyone on this site is willing to give me money, I'd love to go all out and build an all aluminum GN motor and put it into a mazda... just to see how much it would end up weighing ;)

Brandon

A fully dressed LS1 and T56 (complete dropout) weighs in at around 525#. The heaviest part of the LS1 is by far the crankshaft,which hangs pretty low when installed in an RX, and the rest of the parts are extremely lightweight.

Hmm well I like V8's. In fact I still wanna build a 700hp Chevelle but that has nothing to do with this thread. The question is should u put a V8 in a RX-7. Anyone with any sense of cars will of course say no. Rx-7s are exclusive cause of their engine. If u wanted to put a V8 in a small car get a Fiero. V8's and asian cars just dont mix. Also the Rx-7 has a perfect weight ratio (one of the reasons its handling is close to a new vette) to put a V8 engine in there would just b useless. As far as your mustang coments, i have owned a mustang and will never buy another ford AGAIN, the power was ok. but the way it rides and handles, i guess ford really fucked up there, and as far as reliablity? haha get ready to spend alot of money on electrical repairs. seems like fords wiring was put together by apes. But once again its your money and your car. So do as you wish

BTW TOUGHGUY - (Rotary Engines)"Were not built with enough displacement to compete with big american engines." hmm a true comment coming from a true idiot. Mazda never intended to compete with american muscle you moron. The cars were built to be affordable sports cars that would out handle just about anything on the road. and if u look at a Vipers preformance on curves. u might as well just buy 2 ton truck.

I just wanted to add my two cents, I know this isn't usually the best forum for going against the design of the RX7, but I really enjoyed the rotary. I am a projects person, and the fd proved to be a constant project for me. I admit that may be contributed to my ignorance of the car and its design, but I had fun and learned a lot about the engine. When the engine blew (about 2 years after owning the car, and I only got to put about 1kmiles on it) I decided I loved the look of the FD but was ready to stop having to spend lots of money and time on it. I know, if I wasn't prepared to spend money and time on it, why did I get it...
but I sold my performance parts, and did the ls1 conversion. After the sale of the parts, and the install of the ls1, I actually came out about $2k ahead. The car doesn't feel much difference, except the feeling of boost (torque) at all rpms...that is strange after having to wait for the spool.
I know that many of you would have just spent the $2k + on the rebuild and gone at it again, and like has been pointed out many times in this thread, that is your own choice.
The only negative person I have ran into in person was a die-hard corvette owner, but he also told me it would cost me $7k for a ls1 engine, so what did he really know...:) That was during my 'I am considering...' phase.
So I enjoy the ls1, I enjoy it in my FD.
Just my $.02

I like V8, and I like RX7.

But I prefer RX7 with 13B for wight distribution reason, and ... you know the right match goes together better IMO.