im curious as to how much it has costed some of you to get up to 360 rwhp. and im pretty sure not to many people on here have that much power but if anyone does could you let me see a list of mods and how much appoximatly it costed to do them. thanks.
mike

 

u'll need all the bolt ons and fine dyno tune.
lookin at around 6000++ (maybe more)...with stock twins.

 

DP, MP, Catback, Intake, IC, (Streetport), Fuel Pump, injectors, ECU, and some good tuning. But if you are gonna do all that might as well thrown on a big single for 400+rwhp.

You'll probably also want reliability mods liek an aftermarket radiator, boost gauge, silicon vac lines, etc etc.

YOu could probably do it for min $5000 if you do all the work yourself. If you are paying for someone else to do it probably more like 7 or 8

That is assuming you want 360 rwhp at a normal boost level (12-14) psi, pump gas, and safe A/F ratios (low 11's)

 

you will be pushing your stock twins awful hard to put down 360rwhp with them. I would rather drive around with 360rwhp and a medium sized single loafing... (GT350/40, Apexi RX6, etc)

K

 

That is assuming you want 360 rwhp at a normal boost level (12-14) psi, pump gas, and safe A/F ratios (low 11's)


360hp lets you run low 11's????

 

actually, he was referring to A/F ratios in the low 11s.

360 rwhp should get you into low 12s or possibly very high 11s

Rikki got a 11.98 (or close to that) with about 360 rwhp

 

that's pretty good.

 

thanks for the information, my friend just recently bought a 94 rx7, and he doesnt have a computer so im kinda helping him out on research. on this site is there a write up on this year model i mean like something that i can print out , that has information to good upgrades and service information. thanks.
mike

 

If ypu go to WWW.scuderiaciriani.com/rx7upgrades. You will find the basics++++ many more... Welcome to the world of RX7/OCD...LOL..it never ends.......hahahaahah Carter

 

thanks for the website.
mike

 

I think it costs a lot more than that. If you want to do it right, start with a nice new ported block with good compression. FD's are 10 years old now (my R1 was assembled in June '92) and most that you will find will have 60-80k on the engine. A nice ported newly rebuilt engine is about 4-5k alone. Perhaps 3k if you put it in yourself.

Running 360rwhp on an original engine is like playing Russian roullette. Reliable 360rwhp is attainable with a small single. The stock twins can hit those numbers, but you'll be running around or upwards of 1 bar. Stock twins will be toast if you're running 1 bar all the time. Many on the 3rd gen section can attest to that. Small single is anywhere from 2500-3500.

You'll need all the standard BPU mods... ECU 1-2k, intake, dp, mp, cb... another 1.5k.... upgraded ic, ~1k, fuel pump, injectors... another 1k. Tuning...depends.

Lets not forget about the clutch... stock clutch can only handle so much...theres another 400 bucks.... upgraded radiator and all the safety mods are maybe another 6-700 bucks.

If you want good times in the 1/4 you'll need good tires, and perhaps some suspension work to get a good launch. These suspensions are old. They're not pulling the .98 g's like they were brand new. Most FD's with stock suspension have a lot of squat. Lets not add those in there, but we'll keep them in mind.

That's about 13k+ if you want to do it right. 7k+ if you stick with the original engine

We all like to lowball when it comes to the cost of upgrading our cars...but this isnt a car to be lowballing on. FD's live and die by Murphy's law. If it can break, it will...you can just about count on it. My FD and many of my friend's are being worked on or are on jackstands maybe 2-3 months out of the year. When you start modding your FD, costs start piling up. It all sounds kind of negative... but I love my FD. It's a constant learning experience. Read the forum, and the listed sites so you'll know what you're getting yourself into

In this kind of relationship, it's near impossible to get it with a pre-nup.

 

Heh. Sorry, brings back an old memory from the big list (Hey Jimlab, you listening?). Ask Jason, the Rotary God (Rx7 store and this forum). That magic number (360 RWHP) is probably why this forum exists (long story, I don't want to go there). He professed that HP on his own ride, so you could ask him what he had to do to get there, that, and I'm sure he'll sell you a couple parts to achieve your goal. Ok, nuff for me, sorry.

Frank

 

about 5k i would say

 

very good post, blackR1

realistic and depressing at the same time

I go through the same thoughts right now. I want to bump up to 300 rwhp, so I need an intake (or poor man's), then I'll need an ecu, then I really should upgrade the stock ic, then......

 

exhaust, midpipe, fuel pump, injectors,radiator, fmic, single , oil cooler, power fc and twin power, tuned. um... how about 10k for 400 plus rwhp?

 

PFC $850 (Just the ECU)
DP $190 (Mild steel RX-7 store, or used)
MP+CB $300 (Phantom Roadworks)
Intake $75 (K&N Homemade or other, used)
GReddy FMIC $900 (RX-7 store, or any used one for cheaper)
Fuel Pump $130 (Walbro High Flow)
Twin Power $405+$20 harness (or other ignition)
SX FPR $160 (Or injectors)
GReddy Pulley $115 (Remove airpump)
Unorthodox R Pulley $139 (remove PS, AC)
Home Depot Boost Controller $20
Dyno Time @ 15 PSI $120

Total $3,424

Having 340-360 rwhp???

PRICELESS.

This doesn't include shipping or labor. (your going to install this stuff yourself, aren't you??? Please tell me you are.)
Of course this is the cheapest way, I would still make sure everything else is top notch, radiator, ast, vacuum lines, etc...
Don't forget gauges too.

I would also go with some 1300 or 1600 injectors to be on the safe side.
If you don't plan on going single you could always go with a used M2 or Pettit Chip for around $450.
You can also get a lot of this stuff cheaper or used for 1/2 the cost.

Just because its cheap, doesn't mean its bad, but I would look for the best products for the buck.
Also, you want to think about the suspension, brakes and wheels and tires and driver can handle a 2600 lb car with 360 whp.

You also wouldn't want to push the twins that hard for that long, if you had a street port you could run 2 or 3 psi less and make the same power.

This is a recipe for a fast FD, something that could run 11's all day on slicks.


Also you could sell all your stock stuff for $500-$1500 if its in good condition and that cuts the price in 1/2.

Later.

 

360 is reachable, but not that cheap.

You could shoot for 320-330 and save quite a bit. After that you NEED bigger injectors and possibly a street port.

 

black r1, thanks for the realistic information, i mean if were gonna do it were gonna go all out no corners cut, all of the work will be down in house, we have a shop, well not a shop but a barn thing, its nice. where 95% of the work will be done. thanks again to everyone.
mike

 

On second thought i think black r1's is probably more realistic than mine. After all, there's more than 15k in aftermarket parts invested in my car, and i only hit 400rwhp at 16psi, 360rwhp at around 13psi or so. Once you get in the high numbers (around 400whp) a lot comes down to tuning.

 

what if the # is more like 330whp?

 

330whp is pretty common for all the bolt ons with stock twins and stock motor. - Probably close to my first estimate of 5k maybe a little less, unless you are very optimistic like glass man.

 

i was thinking intake, exhaust, cat,dp, PFC, fmic, fuel pump, clutch..TIRES....sound about right?

 

I'm a shop smart, what can I say?

 

To get 360 RWHP you need the following:

*Ported motor ($1500 parts $3000 labor) most shops.
* Aftermarket ECU, Power FC etc. $1500.00
* Exhaust DP, Cat back midpipe or hi flow cat. $1200.
*Intake 2 K@n's/airbox etc $400
*Aftermarket IC $1500.
* Hi flow fuel pump $225.
*Dyno tune $300.
* May want larger 2ndary injectors depending on computer $400.00 rc upgrades

I am assuming all new parts but this can be done cheaper with used parts...

There are 5 or 6 RX-7's around here running 360 rwhp + and have been doing so for 5 plus years. 14/15 psi is ok for years if you don't boost the hell out of the car everytime you drive it.

 

VG30DETT: Quite possibly the only other engine that is harder to work on than a stock 3rd Gen rats nest... If ever my rx7 is givin' me problems, I think back to hot humid day when I helped my freind work on his Z and my troubles dont seem so bad. In its defence all you "need" for 450hp on a Z is a boost controler and muffler and lack of regaurd for the condition of your stock turbos...