Sr20 powered RX8 (pics heavy)

[CmR333]

for the past year i have been swapping a s13 sr20 det engine and tranny into my 04 rx8. My reason for doing this was i love the car, but i do not love the rotary. my stock engine died at 76k and my warranty was gone at 60k. so instead of spending my money on somthing that was for sure going to break again, I bought a real motor and started tearing the car apart. Im getting very close to done now after alot of head scratching, re engineering, fabricating almost everything, and a real working persons budget . the car has a custom modified subfame and custom motor mounts in adition to moving the steering rack 4" forward to clear the crank pulley. the engine is basicly stock for now but i have alot of little goodies here and there. All charge pipes and full exhaust from the turbo back is 2.5" steel tubing and all made by me. i have a custom radiator from summit racing and a proform fan that flows 3300 cfm. I used a srt 4 intercooler that fits very nice up front. I have repaced all the gauges in the car to avoid going through the can bus system that controls all that stuff. I have a central 20 tuned ecu that i know nothing about piggybacked by a emanage blue that is linked to a eo1 boost controller. Im hopefully going to have the engine started within the week and after that i just have to save up some cash for a drive shaft. I have alot of pics and ill only post a few now because i just dont have the time to post up alot tonight. I hope you guys like the car and ill be sending in all the pics from here on out and a few veids when the car is finnaly driving again. http://i252.photobucket.com/albums/hh19/cmr333/DSC01847.jpghttp://i252.photobucket.com/albums/hh19/cmr333/IMG00035.jpghttp://i252.photobucket.com/albums/hh19/cmr333/DSC01730.jpghttp://i252.photobucket.com/albums/hh19/cmr333/IMG00034.jpghttp://i252.photobucket.com/albums/hh19/cmr333/DSC01749.jpg

[drftwerks]

4in forward sound like a big move, but im no race car engineer

[pinkarrowsnow]

damn man hell of a project to attempt.

[dirtdiggler666]

new car with old ass engine i love it:bigok: keep rockin man

[AWSneer]

interesting. Very original and different. How it works out for you

[nlzmo400r]

Just a super quick question....

If you moved the steering rack (and therefore the tie rods) 4" farther foward and obviously didnt move the wheel tire assembly by relocating the LCA etc, then what does this do for steering geometry?

[CmR333]

it didnt help the steering geometry but it didnt affect it to much. My biggest concern for putting this engine in was weight distribution. to my surprise after ditching alot of rotary related stuff and rebuilding the subframe i actually droped about 260 lbs off the front end. i had to lengthen the steering shaft to meet the rack but. over all i dont think im going to have that much of a problem. if i do i will just get some custom tie rods

[WYT R1CE]

Dope swap, but my only concern is with all that room why didnt you do a *JZ or even a LS*?

[CmR333]

ls1 would have had to force me to do like 3 universal joints in the steering shaft puttiing all kinds if slop in the steering. the jz is just damn heavy as hell and i my handling would suck balls. plus the inline six is just to long , i was considering a rb or sr20 and went with the sr because it was cheaper and alot easier to work with and kick ass power potential.

[Matej]

That radiator is kute.

[DJButton]

Awesome love it, need more pics and progress pronto!

[holaback]

Why didn't you buy a newer SR instead that beat redtop?

[CmR333]

that beat red top was only 1700 shipped with the trans and ecu. with the mounts i have in it i can to put a newer sr in i can very easily.

[96Turbo]

niiiiice. this would be a fun combo

[neilsan]

Neat project, I just hope emissions aren't an issue in Florida. I guess you could always sell it to Tony Angelo or some bullshit though

[Ca_laurier]

i work at mazda and we replace 1 rx-8 motor a week. to be honest we all hate them because of the motors and the headacks they cause. but looks awsome, for sure will be following this

[catchmydrifts14]

nice swap. I heard that mazda extended their warranty though. But you are way past warranty stuff now. good luck with it.

[Automato]

nice build. definitely going to be a sweet and unique ride when done.

Neat project, I just hope emissions aren't an issue in Florida. I guess you could always sell it to Tony Angelo or some bullshit though

emissions, there is none. lol, inspections don't even exist. heck, i registered my cars in FL without even ever getting the cars there.

[goldollar]

Thats a first for me. Thumbs up on the project!

[ManoNegra]

Interesting, clean work.
Looking forward to driving impressions.

[slider2828]

If you have any questions about the emanage hooked to E01, you can ask me.

I have been running this setup for over 2 years, tuned by me.

If you need a Map, my current setup is

HKS264Step1
Z32 Mafs
600cc Injectors
3" Inlet GT2871R .86
Stock Intake Mani Stock Exh Mani
I run 1.49 Firmware on the Emanage
and 1.12 Firmware on the Profec e01.

I think that is all you need if we are close.

Good luck.

[spikNspan]

definitely different.

[xdumbxguyx]

damn that cross member looks intense

[morbid]

Should have put an RB in if your already going through all that trouble.

Very unique, though. Well, if you think about it, so is a chick with a dick, but it's not really a good thing. Unless you're into that type of thing....

Just jerking your chain. Good job:bigok:

[steve shadows]

looks like an RB26 would fit nicely in there

[SlideWell]

just like an FD, GAWD, look how far it sits back. excellent weight distribution. fuck an RB

[ThatGuy]

Using a Nissan engine does not qualify this as a Chat Topic.

Moved to Off Topic.

[punkrico]

i like it man finally the rx8 get a good heart lol

[UfoZ8myCow]

Hmm interesante...

This has potential to be pretty cool.

[Bubbles]

Nice man.

Keep this updated.

[alindeman1989]

dam looks like hella fab work.

[francogt1]

excelent work, please keep it updated cant wait for the final result.

[FlyingAngle]

Nice man, the angry lobster gets a proper engine.

[CmR333]

lol angry lobster? thats a new one. anyway im going to try and get this beast started tomorow, i got my fuel lines ran today and a few other little things. Ill post up some more pics on sunday when things are presentable, right now its a mess of wires and what not but im going to take my time and extend a few wires and re wrap the whole harness because it looks freaking awful. thanks for the comments guys

[HyperTek]

craziee man, you like the car but not the motor, curious why u got the car in the first place.. but i wont nitpick. really original swap. not my bag of tea but props for doing something out of the norm of purist.

im curious if that 4 inches of moving the rack forward might affect the toe at full lock?
what mods have you done to the suspension?

[CmR333]

right now the suspension is stock, and yes it did have an affect of the toe at lock. we havent got in on the alignment rack yet to see how bad it is with all the parts in the car yet. I am going to be doing some upgrading and modifying of the whole suspension. with the front of the car now lighter than it was it sits almost an 1" and 1/2 higher than stock,so adjustible spings and struts are a must. luckily there is a tone of susp. parts out there for this car. im close to done with my custom sway bar that im making and i have to order some endlinks that are adjustable. right now the goal is to get it to run, drive later. and yes i love the car but not the rotary that came in it. I have driven a good few fd's that were all fast as hell and 2 of them were autocrossers that handled beyond beleif, but rotarys are awsome for racing but for a daily driver they suck. horrid mpg (16 hwy) not very reliable, and frequint problems with all the cars that mazda did not want to cover under the waranty. when mine popped they wanted almost 7k to replace just the core and have me replace all kinds of very expensive parts that i had already replaced. so instead of throwing my money away at mazda on somthing that was going to break again i took the road less traveled and came up with this for somthing fun to drive and easy to work on.

[blueshark123]

i want to see what rx8 owners have to say about this. i like it

[CmR333]

ive got a thread on rx8club check it out if you like there is alot more detail on how i have done it all. surprisingly most of them have had good things to say

[norcal_black240]

ive got a thread on rx8club check it out if you like there is alot more detail on how i have done it all. surprisingly most of them have had good things to say

Suprised to hear that rotary guys didnt flame you completly. Fc and Fd owners on rx7club usually do not like seeing a non rotary engine in a rotary chassis regardless of how awesome it is.

Anyways, interesting swap you got there. You just hate all rotary engines or just the rx8 engine? My rx7 friends all seem to like the 13b series engine except for gas efficiency aspect of it.

[thefro526]

Anyways, interesting swap you got there. You just hate all rotary engines or just the rx8 engine? My rx7 friends all seem to like the 13b series engine except for gas efficiency aspect of it.

Not answer a question intended for the OP but, the Renesis motor for the RX-8 was meant to be fuel efficient and environmentally friendly, and those are two things most rotary engines aren't

[ZenkiGTS]

i would've gotten a newer sr like maybe out of an s14 or s15 but that's still a sick build... do what you do

[SqueekyClean]

All I have to say is....SCREW YOU, YOU RICH bastard!

I speak for most of us here. AS much as I hate you!!! I love you man!

[blueshark123]

ive got a thread on rx8club check it out if you like there is alot more detail on how i have done it all. surprisingly most of them have had good things to say

post up a link to ur thread

[renegade_ewok]

Definitely giving you props for this...

I love the RX8 chassis - has got some new styling without being boisterous to no extent... Add some SR power to it and you should be able to crank some reliable 300-400whp out of the thing without affecting the weight distribution much. Plus more torque too which is always a plus...

[turtl631]

Wow, it's like how Mazda would have done it (other than screwing the steering geometry), except with the nice turbo 4 cylinder they don't have.

It's not like Mazda has a cool DI 2.3L turbo motor.

And it's not like they put it in all their FWD cars and SUVs, but left the "sports car" with 2 limp spinning triangles.

Nope, Mazda would never have done that.

[CmR333]

I want to make this totally clear. I am far from rich. I have done 95% of the work myself and have bEen having to save a lot of money to make this happen. I work in a bodyshop for caddilac and work on flat rate. I wish I was rich lol....and fro said it perfectly about what mazda tried to do with the stock engine.

[origin_s135]

Not answer a question intended for the OP but, the Renesis motor for the RX-8 was meant to be fuel efficient and environmentally friendly, and those are two things most rotary engines aren't

18-19 mpg is fuel efficient?

[CmR333]

they tried to make it fuel efficient ...key word being tried they didnt succeed from what i can see. Well today was a long day and unfortunately i didint get far enough to get it started. i did however finish off alot of small parts that i fabbed up. heres some pics from today
http://i252.photobucket.com/albums/hh19/cmr333/DSC02409.jpg
http://i252.photobucket.com/albums/hh19/cmr333/DSC02416.jpg
http://i252.photobucket.com/albums/hh19/cmr333/DSC02417.jpg
http://i252.photobucket.com/albums/hh19/cmr333/DSC02424.jpg
http://i252.photobucket.com/albums/hh19/cmr333/DSC02425.jpg

[DreamN]

great swap dude. how's the wiring coming along? going standalone I'm guessing right?

[mondojackal]

do you not read, dreamn?

emanage blue, he said.

[RedStage]

Hell of a job you've got going there, good luck with it all. I'll be keeping an eye on this thread to see the outcome, but it looks like you have it well in hand.

[DreamN]

do you not read, dreamn?

emanage blue, he said.

nope, I didn't see that. I just looked at the pretty pictures and skimmed the info since blocks of text like that are a bit harsh on my eyes. after that I posted.

[vodka2]

sick build .. custom work is always appreciated in my book.

[HyperTek]

well it came out very clean, alot cleaner then some 240s here lol... whould be sick if you shave off the nissan writings on the valve cover and spray it black to look like a newer sr. Would look veryy clean

[rps13drift]

Very awesome dude! My girlfriend just picked up a rx-8 afew months ago! very fun car with great handleing from the factory! I going to convince her to do this when her motor pops

[s13 @ fullboost]

WOW man you must have a lot of patients A++++ I very much like I might just have to subscribe =]

[CmR333]

so i just got a really good deal on a top mount manifold and a tial waste gate. the mani. has a t3 flange on it and im thinking about either bolting on a straight t3 externaly gated or a t3 t4 . im going to be using this manifold for sure because it will make my downpipe routing much more clean and efficent. any suggestions on a setup and places to buy good oil lines.

[CmR333]

So has anyone had any experiance witha sard fuel pump and fpr? I can pick one up pretty cheap so i was wondering. The only other pumps im considering is a aeromotive or a vortech

[ayuaddict]

WOW man you must have a lot of patients A++++ I very much like I might just have to subscribe =]

is he a doctor?

[yaba94070]

intresting choice of motors... but fkn a man go for it.. thats sick...

[ESmorz]

is he a doctor?

:bow:

I like it.

I like it a lot.

Now go low and wide and have a sex machine.

[pablo180]

Just a super quick question....

If you moved the steering rack (and therefore the tie rods) 4" farther foward and obviously didnt move the wheel tire assembly by relocating the LCA etc, then what does this do for steering geometry?

I'd have to take a look at the stock assembly first, but i'm fairly sure that moving the steering rack forward that much will reduce the available angle that the front wheels could turn because you are not increasing the amount of rack travel available to compensate. As a result, this means that you'd have to turn the steering wheel more to get the front wheel angle that you desire. Performance wise, i think it would make your steering characteristics slower/less sensitive to steering wheel input. (Good for high speed driving turns, bad for low speed driving like auto-x). To fix the sensitivity you could go with a smaller diameter steering wheel. To fix the available angle at the tires, you'd have to make a custom steering arm or go with a custom steering rack allowing more travel.

Word of caution, i'd make sure that your are not approaching 180 degrees between the tie rods and the steering arm on the uprights on both sides under a full lock condition. Reason i say is because if the angle approaches 180 degrees, you wont be able to get out of the locked position. I doubt that you are getting close to this, but it doesnt hurt to check.

One last thing i'd be careful of is to make sure that the vertical location of the steering rack does not change. This is super important under bump/droop conditions as you will get bumpsteer (toe in or out as the suspension travels up and down) if you deviate from the original design.

Best of luck on the swap.

[CmR333]

hmmm we need to talk, suspension is next on the list after the engine starts and all that you just mentioned is all i have been thinking about for 2 months. i want to use the stock rack because its an electronic power assist unit just like an s2k has. i was contemplating using a manual rack from an fd but the tie rods are made specific to the 8 and i couldent find anything that was even close without going full custom. i havent gotten it up on a alignment rack yet to even try to see how bad everything is but im bothered at how much the toe changes when the car is rolling backwards. and its not so easy to push either. Im pretty sure buy now that there is nothing that an alighnment can fix. If anyone knows somebody that could help me out with some custom steering and suspension guys hit me up. Im just not that knowledgeable on steering geometry. i do know for a fact though that the steering rack is in the same position it was in just forwad 4"

[Kanseidrift23]

way to go man! that looks really good!

[CmR333]

so heres some goodies i just scored for super low awsome prices. i worked a deal and i now have a stainless top mount mani. and a 38mm tial wastegate. all is in perfect order and look pretty good after a few hours of polishing.http://i252.photobucket.com/albums/hh19/cmr333/DSC02427.jpg

[AznDrftr.]

wow very different and nice. love it man,.

keep it up.

[Walperstyle]

all that room in there i'm supprised you didnt have an equal length, or at minimum some wierdo new manifold we've never seen before.

And spite the hurry everyone wants you to be in here, TAKE YOUR TIME!

[liv2drift045]

A lot of guys use/shops recommend SARD fuel pumps and fpr's over here... a few of my friends have them in there cars. I say go for it.

Nice build... i'll be watching

[cgallardo18]

:bigok: nice build man!

[CmR333]

ok so as of now im working on a fuel delivery solution. the stock rx8 fuel pump is ran by a pulse signal from the stock ecu, and i am not running the stock ecu as you all know. sooo my options are this.....try to figure out the max pressure pulse setting for the stock pump go to radioshack and try to get it working, replace the stock unit with a 265 lph sard pump with an aux pump to move fuel from one side of the tank to the pump side, or spend a ton of money on an aeromotive a1000 pump with a t pipe inlet from both sides of the tank. any suggestions or used aeromotive pumps would be cool.

[CmR333]

ok i havent done much of anything but research this week. Im a little on the broke side for now to lol. Im currently looking for a external pump that will feed a moderatly modded sr, so if you have one or know anyone hook me up please. ok im done babbleing stay tuned

[koukikrisp]

fuglin awesome build, patience of a saint!

i like everything you've done, great motor choice; simple, cheap, extremely potent with only a few power parts. no variable timing bullshit to have to work around when power adding

definitely, definitely, get that thing back up to snuff with handling, that's the rx-8's bread and butter

i have a feeling this thing could be beast, the handling of the rx-8 combined with the power potential of an sr. ill be keeping my eye on this.

[CmR333]

so heres an update. I just purchased a decent but still cheap t3/t4 turbo to bolt onto my top mount setup later on. I also will finally have the funds to order my last few lil parts i need like my fuel pump(aeromotive) and my drive shaft. last on the list is the brake proportioning valve to act as my distribution block since i dont have abs anymore. I also just got word of a sr20 national convention in savanah ga. in march and i intend on being there.

[Propaganda]

Jacksonville Sucks and SO DO YOU!!! j/k... I live in Jax, too!

So you're the guy in town I've been hearing about putting an SR20DET in an RX8. Nice to see you have your own build thread.


You do know we have a local board, right? Unless you're already on there and you have a different S/N. I'm LovEyDuBB over there

[karim.f]

good luck man on the swap ,i think u can help me alot with my brothers problem ,he has the same story u have ,this rx8 blow an engine and the engine costs so around 7k like u said and i searching for another alternative then the rotary engin ,because it isnt reliable a at all ,i live in lebanon beirut ,and lucky their is an SR20DET here in a junk yard.its really hard to find one here close to impossible.they say that it is a 2002 SR which means that it came from an s15.i dont know if it truly is from an s15.HOW CAN I KNOW IF IT IS AN S15 SR?AND BRO PLEASE CAN U TELL ME WHAT WERE THE HARDEST THING IN UR SWAP?THANKS

[dookiedang]

good luck man on the swap ,i think u can help me alot with my brothers problem ,he has the same story u have ,this rx8 blow an engine and the engine costs so around 7k like u said and i searching for another alternative then the rotary engin ,because it isnt reliable a at all ,i live in lebanon beirut ,and lucky their is an SR20DET here in a junk yard.its really hard to find one here close to impossible.they say that it is a 2002 SR which means that it came from an s15.i dont know if it truly is from an s15.HOW CAN I KNOW IF IT IS AN S15 SR?AND BRO PLEASE CAN U TELL ME WHAT WERE THE HARDEST THING IN UR SWAP?THANKS

check for the notch top on top of the engine and the extra piece on the front of the engine. of course it gotta be black top. and check the coil pack. if its blue like the SplitFire then its the s15. i mean thats all i know how to tell if its an s15, i mean the dude could be bullshitting too. oh yea and the turbo.

[karim.f]

i just saw some pics of sr20s on the net of both s14 and s15 but i couldnt find a differnce at all.some s15 sr20 have have red tops.and bro i know the turbo r different between both engins but i cant know but just looking.

[CmR333]

i wish i could tell ya that dropping the sr in the 8 was easy , but it is far from that. it took months to get the subframe and steering geometry within tolerances. If you do decide to do this let me know and i will try to help. just keep in mind i built all my own parts and have done 97% of the work by myself and i have spent upwards of $7k on parts materials and what nots alone. you cant use hardly any of the stock mazda stuff. I.E gauges fuel pump driveshaft power steering and the list goes on.

[punk138]

died at 76k? what a jip!

my brothers FC still running strong at 120k!

this is a crazy build though! more pics... :)

GL

[CmR333]

ill do more pics this weekend when im working on it again finally after 5 weeks

[tehmonkay]

You could've gotten a new housing a set of balanced FD rotors, a rebuild kit from rotary aviaton (seals do not break) a gt35r turbo kit and the fuel mods to go with it for less than 7k and still had good factory suspension geometry.

The final drive is alot higher than a stock nissan as well, so don't expect as good of fuel efficiency as you thought, that's the main reason the 8 isn't that much better than the 7s in that department, though NA people with standalones have seen 30+ highway mpg with the 4.1:1 final drive.

Good luck with the whole suspension thing.

[brewster240]

The final drive is alot higher than a stock nissan as well, so don't expect as good of fuel efficiency as you thought, that's the main reason the 8 isn't that much better than the 7s in that department, though NA people with standalones have seen 30+ highway mpg with the 4.1:1 final drive.



just currious, what gears do you think s-chassis come with?

cause you obviously dont know the right answer.

[OTG Vinyl]

I would've preferred a V8 swap with all that effort. However, a piston engine will always be better than a Wankel, regardless of it's layout. Therefore, I commend you for taking on such a task for a car that so desperately needed a piston-based engine!

[tehmonkay]

just currious, what gears do you think s-chassis come with?

cause you obviously dont know the right answer.

I just went and looked

The ultimate final drive gear ratio thread.: 240SX Technical Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/228683)

You'd be suprised how much information you can find about rotaries if you do the same.
:dead:

[mr_240sx]

wow great build..... cant wait to see this bad boy finished.

[LeftNutOfGowd]

PIC PIC PIC I wanna see some updated PICS

[CmR333]

the final drive in the rx8 is a 4.33 so yeah its not going to be drawn out and efficent by any means but even still the gas milage will be better than it was. and yes i could have spent money on another rotary but that would be tottaly against what im trying to do wich is build a reliable car for daily driving thats faster than it was. anyone that knows anything about rotaries knows that reliability isnt as good as a piston engine. and im not bashing wankels because i plan on building a rotary powered car one of these days but it will not be a dd.

[brewster240]

I just went and looked

The ultimate final drive gear ratio thread.: 240SX Technical Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/228683)

You'd be suprised how much information you can find about rotaries if you do the same.
:dead:


you missed what i was asking.

i know what the ratios are, i was asking if you did, because your statement was pretty gay.

and you did it again.

[CmR333]

agreed... be sure before you jump in

[CmR333]

WELL THE AEROMOTIVE FUEL PUMP WILL BE HERE FRIDAY! WOO HOO!! i also will be getting my proportioning valve for the brakes and then i can start moving forward again. just out of curiosity will this bad ass pump kill my stock fpr?

[CmR333]

ook lots of changes to the fuel system have been made none aeromotive and i got all my parts except the d/s wich will be here by the 3rd. im on vacation this week and im not going to stop working on this thiing untill its starts dammit.

[OTG Vinyl]

Aeromotive makes more than one model fuel pump. It depends on which model.

[AJ-TrueStreets]

can't wait to see this thing running. I still laugh everytime someone does a engine swap on these cars and comes out with something either at the same weight or lighter, just boggles the mind, lol. Great engine choice! I bet the car will exhibit more oversteer.

[CmR333]

yeah i had instant access to a sard 265 lph in tank pump that was almost plug and play..and yes my car is lighter now im just not sure by how much

[wow-thats-a-cool-car]

this is awesome dude i wanna see the finished product

good luck

[aziankingz]

damn sucks to hear that the rotary died with less than 100k miles.. what a shame..

[MattyBoyMr]

nice....should have rb'ed that beast lol

[jc-performance]

I really love the subframe. I have an RX8 also and i plan on swapping it out also when it blows, but i still have like 50K warr on the motor. so we shall see if i can wait that long.

[CmR333]

ok and again its been a while since i posted and update. I have not abandoned this project! its just on hold lol. . in the mean time i just finished all the bodywork on my mr2 and its getting painted next weekend ( i love free parts) . heres the d/s for some visual appeal
http://i252.photobucket.com/albums/hh19/cmr333/IMG00026.jpg

[H4ck3d4l1f3]

I know it's been a few months since this thread was updated but i was curious if you ever got it running.

more pics!

[CmR333]

i will be working on it soon. ive been in a crappy cash situation so i havent been able to do anything as of yet. anyone wanna donate some high pressure fuel line lol..

[CmR333]

oh yeah i almost forgot. I traded that top mount mani back to the guy i got it from for a tubular top mount. and before you guys starts hating , yes its a ebay mani, but it has been rewelded and as long as the head flange does not warp ill be ok. besides i cant be to worried about it considering the deal. now i just need a nice t3 flanged turbo.
http://i252.photobucket.com/albums/hh19/cmr333/IMG00089.jpg

[DCP94]

nice man good luck hope all goes well

[CmR333]

anyone know where i can get a cheap but effective egt gauge?

[Vatche]

props! i like the idea alot. i love SR's and the rx-8 is a great car minus the motor. put both together and your in business! lots of potential here.

[dookiedang]

bump! whats the update? i wanna see if it works.!

[iwishiwas-all*]

s15 motor atleast man,... welcome to the slug

[jilo]

why is everyone saying a s15 engine? who here really loves there vtc that much?
if anything, down the road put a ve head on it. to hell with vtc, a redtop is a good reliable engine which is exactly what youve said over and over. its just the rocker arms that arent reliable. the sr16ve head takes care of all that and broadens your torque range and raises your rev limit. as far as the steering you could look into making a different oil pan for the clearance you need to mount it farther back, then since it would probably get lowered, get some tie rod ends with spacers to maintain the proper tie rod angle.

other than all that jibber jabber, good job on the fab work!

[ixfxi]

i like this thread............. and i really wish the owner good luck, because this is a bitch of a job. i dont want to sound like a dick, but i really wonder if this project will ever be completed (and be fully functional).

the amount of time and dedication and BALLS to start a fucking project like this is quite great. i myself would probably not be able to do this, thats for sure. i'll stick to the purist pussy route and call it a day.

imo, mazda builds fantastic platforms but horrible fuckin choices with their motors. i dont like rotary motors in terms of reliability. i own an NB miata as well and think the motor is a piece of junk. RX8 seems like a great chassis... even the later rx8 came with density foam filled crossmember.. cool shit.

if it wasnt for that fucking 3rd door and shtty rotary motor, ide really like this car. at least youre taking care of 1 of the 2 problems.


GOOD LUCK

[Kaiyoken]

Looks crazy. Good luck

[sub9lulu]

imo, mazda builds fantastic platforms but horrible fuckin choices with their motors. i dont like rotary motors in terms of reliability.


theres a reason why Mazda + LSx = win

[s14driftNA]

What i dont understand is why people aren't straight nuts on this, it's OG!! Renisis are jokes compered to the 'ole 13b, so it's a great advantage. This is a great build, GET EXCITED FOO's!!!

[driftermic]

great job, good luck post videos when you have it running.

[Chad4061]

nice work...definitely gonna be a more reliable motor.

[dookiedang]

bump! one more time! what the fuck is going on with this car? i wanna see!

[S14_Kouki]

why is everyone saying a s15 engine? who here really loves there vtc that much?
if anything, down the road put a ve head on it. to hell with vtc, a redtop is a good reliable engine which is exactly what youve said over and over. its just the rocker arms that arent reliable. the sr16ve head takes care of all that and broadens your torque range and raises your rev limit. as far as the steering you could look into making a different oil pan for the clearance you need to mount it farther back, then since it would probably get lowered, get some tie rod ends with spacers to maintain the proper tie rod angle.

other than all that jibber jabber, good job on the fab work!


Because S15 engines are new like the RX8. You know you dont have to change the head to get ride of VTC you dont even have to change the cams. Just change the sprocket and bolt to the s13 sprocket and bolt. Yes its that simple.

Anyways the build is awesome man keep up the good work

[widebodyseven]

Any updates?

[thestreetzking]

just saw this thread is old but mazda made there engine warranty to 100k now lol, my buddys 8 just died at 75k and mazda said they extended every 8 warranty on the engine, props on the sr though, looks awesome

[S14_Kouki]

Damn man what is going on with this car.

[drift_limo]

wow.
great swap.
actually looks good in the rx8.

put a bn-sports kit. nice wheels. and done.

more pictures.

[AE_Racer]

Sounds like this project died like the renesis...

[S14Serge]

Yeah project is dead as this year is gonna be in a few days ya dig!!!

[hamiltonbmx]

sr20det FTW!!!

[htownsr510]

A guy in Houston already did this swap in his rx8 sweet setup

[slamburger]

Good job bumping over a year old thread with this completely useless info...thanks