Fyxxter

Ok here's the deal I have my 79 rx7 which I love the car dearly but it's old. And as tim the tool man says, more power *grunt grunt*. Can anyone in here give me and idea as to how much this setup would cost me. And I much appreciate the help. *flame suit on*

85 mustang gt motor stock (yeah I know)
t5 tranny I guess?
granny mounts
good set of 14 by 8 wheels and some sticky tires

ok now here's about where else I need help

struts and springs are gone anybody know where I can find any for a good price?
also will I need to run a bigger fuel line and pump or I dunno? yeah I"m a newbie at this whole carb thing so please don't flame me.
I'd need a new radiator for sure, hmm what else brakes yeah probably brakes too.
if you can think of anything please do tell

I am not going to mod the motor if I get it
surely it has enough power and won't tear the rear end all to hell on me but I don't know. Any suggestions as to being able to keep everything working with a stock rear end please don't hold back. Also to the purists I apologize but this 12a is old and I'm in ford/chevy country. I liked the motor when it was running but it didn't run for very long

I'm hoping to make this into a club autocross car for me and my solo 2 friends. So it may be a group driven car.

THanks again for all your help

RiceRocket

o shti man, i didn;t realize that youw ere gonna post a piston swap story in here!!!!

i thought you were jsut gonna ask about the suspension or where to get parts.


"forgive him for he knows not what he does"



prepare to be

Fyxxter

sorry about that. It's my second time posting ever on here so I do apologize.

RiceRocket

and btw, welcome to the forum man. glad i finally got ya up here.

and feel free to hit the rest of us NC guys up for info here https://www.rx7club.com/forum/showth...hreadid=111446

RiceRocket

hell, at least you aren;t a dick yet.

RiceRocket

why og to the trouble of putting in a piston engine?


why nto rebuild the 12a?...assuming that is waht it has in it.

it isn;t all that hard to rebuild. basically only has 3 moving parts. and with a good streetport, and intake and exhaust systems, you could make very adequate and usable hp. and prolly for less than getting the V8 and fabricating all the stuff youw ould need to put it in the car.

and as for all fo the suspension work, liek i told ya, i don;t know if any FC stuff will fit on a FB. not too knowledgable of FBs myself.

but i am sure that there are people in here that would liek to help you.

and if you like you can talk to hondas_are_adisgrace on yahoo. he has a first gen with some suspension work i believe.

RiceRocket

and it may help to try and find an online factory service manual (FSM).

i don;t knwo if there is one for a FB or not, but i know there is one for a FC> so i don;t see why the FB would be an exception

MosesX605

As an autocrosser, swapping the motor puts you out of the classification rules in SCCA. If I read the page right (http://www.moutons.org/sccasolo/Rules/index.html), swapping in a motor from another manufacturer is not allowed. If you're not running SCCA rules at your local club, the motor swap will still place you in a Modified class where you will probably not be competitive without major suspension modifications.

There are also considerations about the current balance of the vehicle and how another 100-150 pounds of motor will damage that balance. IMHO, keeping the rotary is the best bet for an autocrosser.

If I'm wrong about the rules, I apologize, I'm used to the Western Canadian Motorsports Association rules, which are quite different than the SCCA ones.

Fyxxter

well this is true it will be in mod class and I knew this but they don't class the 79-81 1st gens in any classes. It seems they don't have a class atleast to my knowledge. I know they won't let pre catted cars run in its (because of some wierd rule about not having shielding for a cat?). Who knows but I had planned on doing extensive suspension modifications as well as a weight balast in the rear. It may become a heavier car overall but it can be tweaked out without to much drama I don't believe. Sure it's not gonna be as fast at cornering but it's not going to be something that is aimed for nationals. Just say something for a group of guys who want to get other people in on autocross who will have a "team" car.

851stgen12a

I would think that the 12a would be much better for auto-x simpley because of the balance and light weight.
Plus if youput in a different motor (other than 12a or 13b) its going to put you into a mod class.
The problem with that is that, that is were all the high dollar modified race cars are at. Very difficult to be competitave.
For the price it would probobly be much cheaper to have a professional rebuid donr on the 12a than to swap it for the 5.0.....

RotorMotorDriver

iTrader: (1)

Yeah, what they all said. plus, since its a "working car" (I think), you have all the parts you would need to just rebuild the 12A and use it again, rather than making momunts, getting a new tranny, exhaust fabrication, etc...I know porting it would put you in a different class too right?

~T.J.

Fyxxter

nevermind forget I even asked.

RotorMotorDriver

iTrader: (1)

Uhh...You sound mad. Are you mad that we all said to just fix the 12A rather than answer the questions? Or did you just drop the idea? Check out www.grannysspeedshop.com for kits and stuff...I dunno, I just wouldnt do it if I was running in autocross (I plan to soon though), so I was just giving you my advise .

~T.J.

gpvoss69

Don't let the rotary purists get you down.
I put a V8 in my 1st Gen, and it was the best thing I've done to the car.
Just research Granny's Speed Shop website.
Here's a quote from the site:
"Think the v-8 will forever ruin your handling? Daryl Evans's ZZ4 powered RX-7 solo car was last years local, regional and Canadian Western Champion in E Mod."
Good Luck!

Eville140

http://www.v8rx7.com

Later
Randy

MosesX605

Being a 'rotary purist' has nothing to do with my recommendation to leave the 12A in the car. Considering autocross rules and the expense of running in a modified class, the most economical route is leaving in the 12A and running in a Super-Stock or Street Prepared class.

That's not to say I agree with taking the R out of the RX-7, but everyone has their own preferences. If you are set on putting a V-8 into your 7, Granny's Speed Shop is a proven way to do so.

Fyxxter

Yeah I'm mad because if I wanted to keep the 12a I would. It's blown and it doesn't work, when it was working it sucked down gas and oil like mad. It was a smooth little engine but just not torquey enough down low. I know it's going to be in mod class like I said there is no class for the earlier models that came with "thermal reactors". So thing is if I mod it I'm going to mod the hell out of it whether it's a v8 or a 12a. Parts for a v8 are a hell of a lot easier to find around here and there are tons of people in my area who know them. 12a's are a different story. I've got other cars for me personally that I autocross and do very well in. This is just wicked excess in a way. Yes I will make it handle, might be heavier and probably slower through the tighter courses but it would be an attention getter and really good for the club. Also I guess I should have phrased it all in just a suspension question. Look past the v8 thing and help me with the suspension. I can't find any adjustable stiff struts for the car and so far the highest rate springs I am finding are eibachs. Is there a way to use gen 2 rx7's brakes/suspension components? Wouldn't mind some bigger braking power because if it's going to weigh more it'll definately need it. Also while I'm at it is there an aftermarket company that makes a more responsive steering box for 79's? I don't mind it turning me into popeye but wouldn't mind a little improvement.

Also I like the motors don't think I don't. To tell you the truth if I had a gsl se there's no way I'd be putting a v8 into it. 13b turbo all the way on that one!!! Man are those cars rare though.