TT_Rotary

iTrader: (3)

obviously u dont know V8's either, the company im going to only works on F-BODYS.. and they also said, there is no difference in the 323/LS1 except slightly smaller pistons.. the conversion will be a lot easier.. im gonna listen to the pro's.. not you.. =/ sorry, also, doing an LS1 swap would cost more, than a 323, the only reason it would cost more, is b/c every1 wants a LS1.. its supply/demand.. why not go 350?.. why not go 323?? its the same thing as an LS1.. i suggest you go to V8history.com

chev-hell

The 5.3 conversion is the exact same as the ls1, it's basicly an LS1 with a smaller bore and an Iron block... the cost of an ls1 from a total'd car is about 2k more than the 5.3... nobody is thinking 5.3 they all think "ls1" ..... The cam/springs will be swapped to a cam cut for the turbo, the boost will be low around 10psi... this being said would be around 500ish HP, with great street manners, good gas mileage. LS1 is a term used too much LSX is more like it... Many racers use a 5.3 engine and bore it to near the 5.7 size because they want to use an iron block instead of aluminum. The shop doing the work does ONLY LSX engines... they can do em with their eyes closed and have a 900hp Hummer they are finishing up. a LSX based 402 with a lotta boost. they can wire it, tune it everything. I know the guy doing the work and he's cut us a decent deal, AND has the engine and a T56 sitting around ready to install which is saving us a few bucks. we don't need 1000HP, don't want 1000hp, not the point. If we wanted a race-car I'd build it myself..... it's a dependable, easy to work on GM engine.... only reason we are even using the shop vs us doing it is time, would take 6-12 months for me to do it, they will do it in 1-2 months AND they can dyno tune it.... and guarantee their work.

EJayCe996

Of course I don't know v8s like that, do I have a v8 powered car listed in my sig? Working on F-Bodies is not an RX-7 chassis now is it? Tell me if the 323 has the same mouting points as an LS1 because I really don't know and I like to learn. I'm going by the fact there is gonna be a lot more custom fab work a.k.a. labor which you will be paying for (outside of engine cost) to have a custom set of mounts to mount it and not obstruct anything. There's already tried and tested motor mounts for LSx motors from multiple companies which means prices are cheap due to competition. Its merely a suggestion for you to keep your options "open" but clearly you turn around and know everything when someone tells you what you don't want to hear when YOU started this thread asking for help. I'm not trying to start anything here, just trying to let you know of other things out there. You seem to focus on a single brush stroke and not the entire painting. I mean hell, if they fab you up some mounts, install it, and wire it for free, go for it. If they are gonna charge you for the labor and then gotta fab up a mounting system constantly and make prototypes to make sure PS/AC (if you want to keep those) will fit, unobstructed header path, hood clearance, radiator clearance, firewall clearance, and minimizing or completely avoiding any bumpsteer, that could/might possibly cost you more than an ls1 engine and a cheap set of ready-made mounts after it is all said and done and running. Chat with GsrSol, if he's still lurking around because he has a v8 FD in our wonderful state of Texas and did a lot of research before doing his swap (one of the first few to do it) and could give you a few pointers on what, and what not, to do/look out for. Since he has a V8 AND an FD, I'm sure you'd listen to him since I'm just a know-nothing/no-experience with it.

What's the difference in weight between the 5.3 iron and 5.7 all-aluminum? From a handling standpoint, if the difference is enough to start changing the balance, then I'd say its worth the extra money. From a pure straight-line/drag standpoint it may not matter as much, no? I appreciate you coming in and giving your two cents and knowledge without telling everyone else they don't know anything.

Slammedblk7

iTrader: (7)

Im just saying...you dont need a V8 for your goals. I think that the pricing for everything is what is scaring you away. 500-600hp is by no mean impossible "per-say". It takes more research than anything. Putting your foot out there and trying stuff. My first turbo set up did 315rwhp at the age of 18. By the next year I was making closer to 500wrhp with the switch of a turbo, how? Did some math and studying. I was in high school when I put my car together...so I know you don't necessarily need millions of dollars. Why is it that you seem to be struggling with that concept? My new set up now is ready for the 600hp area. Want to see how well that FD does against it?

Here she is weighing in at 2750lbs

EJayCe996

Eric, when are you gonna get the lip so we can be semi-identical twins ..... except yours has like.. 5x my hp I wanna take some pics of our cars and our black front ends before they get painted.

BDC

What's the whole point of this thread? If this guy wants to do a V8, then there's a section for that.

B

TT_Rotary

iTrader: (3)

at first, i was gonna do a single turbo conversion, then i changed my mind, b/c im not spending 8k to push 400hp... when i can spend 8k and get 500-600hp.. and the only weight difference in the ironhead and the aluminum head is 80 lbs.. and the 323 and ls1 are the exact engine, so the motor mounts for the lsx swap, would also work on the 323, i would imagine.

i understand what ur trying to say slammed.. but, rotary's are just not as reliable as pistons.. more detonation.. more problems.. and we'd like to know how to work on it ourselves if something goes wrong.. not search days and days for answers and not know what were doing when something goes wrong on the rotary.. its like chev-hell said, its not only for hp.. its for reliability.. mileage.. and for the purpose of an easily simply built gm motor, that "everyone" knows how to work on for a reasonable amount... only a select few can work on rotary's..

Slammedblk7

iTrader: (7)

I understand that concept too but, you have to realize if you haven't already. It doesn't take 8k to get 400hp. Trust me, did you even bother to get a quote from BDC? Some of the best work you can find, without all the shop overhead, employee/whatever prices. You can get more than 400hp for 8k on a rotary. It sounds like you were expecting a monster jump in power from modding on stock twins?

re-rx7

iTrader: (3)

^^^I've been through hell and back with my car. After all is said and done iam glad i have stuck through it. I have gotten to learn about so much in automotive terms i love it!!!

prrex4ever

iTrader: (3)

Not trying to be funny but why don't you just buy a Camaro and make it easy for yourself. The way you talk about rotaries that seems to be more up your alley.

re-rx7

iTrader: (3)

I was thinking the same thing...really why don't you jus buy a camaro or trans am??Instead of butchering this car? You could easily sell that car forwhat it would cost to buy one of those things!

JCurry

iTrader: (6)

i say go with BDC, Brian is a great guy, he did the half-bridge on my sec gen, i havent got it put back together yet but im sure it will be awsome!!!

TT_Rotary

iTrader: (3)

brian wont answer his phone, and first of all, the trans am and camaro weigh a lot more than the 7... there's nothing wrong w/ putting a 323 in a rx-7, all in all, this car will walk off and leave the rotors.. =) sorry to say.

TT_Rotary

iTrader: (3)

and plus.. 500-600hp sounds better than 400..

Slammedblk7

iTrader: (7)

Am I right? You were hoping for lots of power from the stock twins? I can give you a ride in mine..I bet I can make a believer out of you. I have never failed to amaze. Even hardcore chevy guys.

BTW. Trying leaving him a message, He will get back to you.

EJayCe996

He'll i'll be happy when I start my project to just put out around 300-350, since not much past 400 is usable on the streets anyway unless you're into illegal contests of speed, actually track/drag your car, or just want bragging rights of a hp figure.

p.s. Change your user title, you're living in the past

keep those of us who are interested updated on the project.

re-rx7

iTrader: (3)

Man where is this magic 400 is the limit coming from??? Also brian always calls back when i leave a message!! Brian iam ready for the Haltec install!!!

EJayCe996

I'd just say leave it alone, most glass ceilings are placed there by the person climbing the ladder in the first place I remember reading a debate a while back that BDC was a part of where people were pulling out "magic" numbers for the limit of hp on pump gas and stuff.

mar3

iTrader: (8)

The big problem here is that he titles this crap thread 'need some help' when he's thinking V8 conversion...this is a rotary community as it clearly states in a lot of places....worse, if you take the freakin' time to RESEARCH, you can easily find that board which addresses these abomination cars. If light weight is your reason for this rape, get a freakin' Pinto or Vega and transplant the thumping V8 in that chassis. THAT combo will walk away even faster from this FD-V8 bastard you're thinking of building and you'll save even more money, to boot. A win-win for everybody and everything.

Here's where you need to go and I sure wish this whole thread would head there and quit polluting the South Forum with its nonsense.

The Heretical Manuscripts...

TT_Rotary

iTrader: (3)

if u read my very first post, one of the mods i would've liked to do, is a single turbo conversion.. i did not plan on keeping the twins at all, b/c the twins cant handle what i want to put out... the most any1 has ever seen out of the twins is 385, and that was tuned by gotham, trust me, i have done my research.. i just cant find a decent deal for what i wanted to do... which i will mention again..

1) single turbo conversion
2) stage 2 streetport
3) engine rebuild

and im not positive that my car even needs a rebuild, it runs perfectly, i just wanna make sure, my motor has the right preps for handling a single turbo and 400+hp.. but.. i just dont wanna have to be skeptical of the rotary engine everytime i turn the key. and plus, its hard to find some1 to work on it for a reasonable price.. gotham wants 5k to rebuild + stage 2 streetport.

Slammedblk7

iTrader: (7)

Did you leave BDC a message? He has the best rates, without quality compromise...just compare the prices

Rx7_Nut13B

iTrader: (1)

Again with paying someone else, Learn by doing...


Also there was someone in New Zealand that made 440hp on Modded Twins, it was 2 Cosmo 20B Twins that they used both Secondary HT-15 turbos on one set of twins. I remember reading about it on nopistons

O yea, Torque for a rotary is just a 2 STEP away

TT_Rotary

iTrader: (3)

well.. i dont have time to do anything myself.. and honestly, i could careless how much hp twins made.. =/ im just going by what the gotham racing website says..

TT_Rotary

iTrader: (3)

and i have a question, about the rx rear end.. do u have to change it when u run slicks?? im not gonna be able to hook up at all w/ the hp and torque im gonna be putting down, did u have to change it, or are u running slicks on a stock rx-7 rear?? just curious as to what u went w/.. from what i understand w/ street tires, ill just smoke tire on take up.. but w/ slicks, to hook up, ill snap my rear end..

prrex4ever

iTrader: (3)

It's the same as a high output rotary engine. If you upgrade the engine but have a weak drivetrain something is going to give. So with all your HP and TORQUE? you should also upgrade your rearend. Ummm, you might want to change your sig since your not TT Rotary. Since what I said above is obvious to you your probably looking at some suspension pieces to control your wheel hop, upgraded axles, a diff. brace and maybe a Kaas rearend. I think that Camaro is looking better and better with each post.