the93fd

i have a 93 fd just got it, it has been my dream car for years, now that i have it i want to make sure im starting in the right place. im thinking new air intake, downpipe 3", new midpipe 3", boost guage, coolant hoses. what do u think your input would be much appreciated.

thanks,
the93fd

vl4bad

your thinking in the right category...'power upgrades' are the first steps i would take, then work on exterior and looks last...dont forget suspension and brakes!

dwb87

iTrader: (22)

Suspension, wheels, and tires... These will go a LONG way.

NVMYRX-7

iTrader: (24)

Where do you live in NC?
BEFORE you do any mods READ, READ, and READ some more! Start by checking compression, changing all fluids and filters. Get a boost gauge to ensure you are boosting correctly. DO not put a midpipe on it or you will over boost and have a blown engine.

Sgtblue

iTrader: (16)

^This and a good aftermarket temperature gauge. The stock gauge isn't linear and worthless....as you will learn after reading a while. IMO everything starts with a well running car and especially a solid cooling system.

Oh **** yeah! Let us know when it blows up and the part-out begins.

enel1221

My 94 rx7 has 3" all the way back, and no overboost problems...I would recommend replacing coolant hoses as I just experienced last week my lower one blew apart. You definitely want gauges I’d recommend boost, A/F, and water temp. Also make sure you have aluminum air separation tank.

Sgtblue

iTrader: (16)

^Do you have a cat? Do you know if a previous owner ported the waste-gate?

Boost creep can show up without alot of warning. May not have issues for along time. Until that one day you go WOT when all the conditions are just right. Then a nasty noise and you've toasted an engine and a set of turbos. Regardless, w/o a cat they're loud(er) and the exhaust smells like ***. You will see power increase though. To each their own.

oyvindjs

iTrader: (4)

No no no....

1.KNOWLEDGE! Read FAQ thread in 3rd gen forum, its sticky...
2. MAINTANANCE! get an overall status of the car, inspect and change fluids(coolant, engine oil), measure oil level in diff and gearbox , inspect and change sparkplugs, get compression tested, change fuel filters, measure battery and alternator output, inspect Y-pipe for oil leaks from turbo, inspect and clean/change air filters. Get a boost gauge and a decent temperature gauge to see how it boosts and what temps you are on. Inspect all hoses in the rats nest, and all hoses holding air or liquid around the car , for cracks and replace if necessary.
3. MORE KNOWLEDGE! Read up on correct order to upgrade parts. This is a rotary engine, not a piston engine. Do forum search, it has been covered plenty what order to upgrade stuff and why.
4. UPGRADE!

enel1221

yes it has a cat, he never said anything about the wastegate being ported but I have not looked at it so i can't say it's not. This is why a boost gauge is a must have, just make sure you pay attention to it.

Natey

iTrader: (19)

1st: Downpipe/precat delete.
2nd: aluminum AST
3rd: Check the vacuum hoses in the rats nest.

Hold out on the midpipe until you get some kind of fuel management.

spendyrx

Remapped/upgraded ecu - heard stock maps are crap, new intercooler too and as above with the maintenance

Sgtblue

iTrader: (16)

Well you wouldn't expect boost creep with a cat in place. I took your statement that you have 3" exhaust "all the way back" to mean your running a mid-pipe instead of a cat. If that were the case the only other way to avoid creep is to port the waste-gate...which is internal and impossible to see. Yes, a boost gauge is a must-have, but few will react fast enough to avoid creep, so it's no defense.

dwb87

iTrader: (22)

Really people? Very few of you had even mentioned suspension and grip... You can upgrade your engine all you want, but you need the right suspension and tires to be able to maneuver properly. You can improve your handling with the right suspension and tire set-up. I am surprised most of you even thought to mention maintenance.

I believe that NVMYRX-7, Sgtblue, and oyvindjs know what they're talking about... I guess HP is more important when it comes to most of you FD owners, though.

Sgtblue

iTrader: (16)

The FD came with a good suspension out of the box. Replace anything that's worn, but for the average streeted car and average driver, it's plenty.
And who's talking hp? I'm preaching reliability. Suspension mods and tires are meaningless if the car's sitting on jack-stands.

TurboS5Vert

iTrader: (5)

I would suggest a wideband and an EGT gauge so you can monitor the air fuel ratio, running to lean will lead to early motor failure especially if your trying to up the boost on a stock ecu. The car can only dump as much fuel as the computer tells it to. As for the EGT, when your exhaust gas temps go beyond normal something is working much harder than its supposed to. There are plenty of threads about supporting mods that can be done to avoid motor failure in most cases. Just do things in the right order and don't try to make an 800 whp monster right off the bat. Have fun with it that's what rotarys are all about.

the93fd

so i went with a pettit cold air intake from the rx7store, i will be looking into getting my down pipe these next few days, any advice? i have noticed alot of the cheaper downpipes come with a mid pipe, is that necessary?

NVMYRX-7

iTrader: (24)

Since you live in NC and seem to be determined to do your own thing I'm going to give you the numbers you will definitely need sooner than later especially for your

RotorSports Racing
Contact: Bryan (owner)
He is on the forum under username r0t0rhead
https://www.rx7club.com/members/r0t0rhead-387/
465 Russell Farm Rd.
Kannapolis, NC 28081
704-933-6222
http://rotorsportsracing.com/

RX7 World
Contact: Ernst (owner)
3163 Celanese Rd
Rock Hill SC 29732
803-554-9777
http://www.rx7world.com/

ramo

iTrader: (30)

I just got an fd, and blew a coolant seal the first few weeks cause I replaced the radiator and did the coolant filling process incorrectly.

GET A WATER TEMP GAUGE. I was watching my stock gauge while filling and it rose more and more but I thought it would cool down at some point. Now I need to rebuild my engine.

READ THE 3RD GEN FAQ

the93fd

yea as i am new to this forum i am still trying to learn my way around...have i done something bad? no parts have been installed yet, why are you talking rebuild? my fd doesnt even have 30,000 orig miles. i have looked and read and read many sites and faqs about what and when to upgrade, i have my guages and was intake and a downpipe is this wrong?

ramo

iTrader: (30)

im telling you, because of my faults and not taking info on the forum seriously, that i have to rebuild my engine now cause it keeps over heating. i had 80k on mine.

you can have 1mile on your engine and if you do something wrong you can blow, mileage doesnt matter when it comes to that.

those mods you last said are good, to be safe, i would work on cooling, like getting aftermarket radiator cause the stock plastic one is crappy. no harm in upgrading there. itll keep temps low so you can have more fun in the car

dblboinger

iTrader: (3)

read this link

https://www.rx7club.com/how-use-site-255/tip-using-google-search-forums-please-read-808264/

It will help you when you are trying to find something. The search option on this site is, shall we say, less than desirable. This has helped me probably more than any other thing anyone has told me...because you can't read about something you can't find.

the93fd

when you say get a radiator should i just get the intercooler a bit earlier than i was planning?

oyvindjs

iTrader: (4)

the93FD..... seriously....
Stop thinking mods mods mods, and focus on the primary work and "secret" of keeping a rotary alive...
MAINTANANCE!!!!! I will say this again.. Maintanance!!!
Even if your engine has only 30K on its back, its not a given that your engine has had a good 30K life..!
Start with the basics! Maintanance!!!!
Get a compression test, it tells you about the internals of the engine.
Do a full oilfilter/oilchange. Inspect oil visually AND with a magnet, to check for metal fragments etc... Do the same with the oil filter, inspect for fragments of metal. Set oil change intervals to 2500 miles.
Change coolant, inspect for discoloration etc. IMPORTANT: USe same type of coolant that you removed from the car(same color)
Inspect and/or change spark plugs and plug wires
Inspect and clean or change air filters
Inspect diff and transmission oil for low-level oil.
Meassure volt-output on dynamo and battery when off, at idle and at 3000 rpm to see that the powersupply is working as it should.
inspect/change fuel filters in tank and the one attached to rear subframe.
inspect water hoses and vacuum hoses for cracks or leaks.

When this is done, you can start looking at mods...!

DO NOT replace cat with a midpipe unless you have an aftermarket ECU mapped for more boost, have a fuelsystem that is up to date and upgraded, and have ported your wastegate on the turboes. This will lead to boost creep and kill your engine fast!

At a mod minimum i would have the following stuff, in this order:

Check if vacuum hoses are replaced with silicone hoses, if not, do it.
Cold air intake
cat-back exhaust
Aftermarket ECU, like an Apexi PFC + commander, get it mapped when fitting the stuff mentioned underneath
new fuelsetup(supra pump and 1600 secondary injectors + new Fuel pressure regulator)
Port the wastegate
Downpipe and midpipe

oyvindjs

iTrader: (4)

Oh, and get a water injection kit too, it cant hurt!
And a decent set of gauges, water temp, oil temp, oil pressure, and a boost gauge
And a wideband AF kit

theese cars are abit touchy about what you do to them, and you have to be gentle with em, like with all supercars, the margins are slim. fnuck up, and it costs MONEY, alot of it! Do things right, and you will have a happy rotary ownership
IF you cant afford basic maintanance, you have bought the wrong car..

spindacut

Buying a FD next week. Found this thread very helpful