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-   2nd Generation Specific (1986-1992) (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/)
-   -   what are some *free* mods? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/what-some-%2Afree%2A-mods-602435/)

Icemark 12-04-06 08:34 PM


Originally Posted by pimpdaddy7835
and I've got aftermarket exhaust
an alright glass pack with the stock mufflers

this hick told me to stick a water hose in the muffler and make the glass in the
glasspack shatter so my car sounds loud....

good... bad.. what??

If you have glass packs and a non turbo, you probably have no baffling anyway and the fiberglass has long since melted out of the car.

Glasspacks typically last only weeks on a non turbo rotary, and sometimes just hours depending on the quality and materials. They just can not stand up to the heat.

nexpo8 12-04-06 11:37 PM


Originally Posted by trueimport
You can make one less trip each week to the all night burrito place that should cut off a few pounds and that’s FREE J/K

If you have some ATF you could do an ATF flush to loosen up those apex seals. That would help restore some compression and help the longevity. I see that in your sig you have a rebuild but the ATF flush is always a good thing!


whats ATF?

Black91n/a 12-05-06 12:29 AM

Here's a couple of my favorite cheap/free mods.

https://www.rx7club.com/2nd-gen-archive-72/how-de-power-your-steering-rack-right-way-440198/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-build-lower-arm-bar-under-%2415-448638/

I built a brake MC brace with the lefotver material from the lower arm bar.

Other than that, there's lightening like people have mentionned.

Icemark 12-05-06 12:37 AM


Originally Posted by trueimport
If you have some ATF you could do an ATF flush to loosen up those apex seals. That would help restore some compression and help the longevity. I see that in your sig you have a rebuild but the ATF flush is always a good thing!

Nobody that has long term experience with rotary engines ever recommends the ATF BS. It is something that rotary newbies tell other newbies.

The ATF treatment really should be considered the last attempt at making a motor work that really needs rebuilding, and never should be considered a preventitive or good thing.

Aaron Cake 12-05-06 09:19 AM


Originally Posted by trueimport
If you have some ATF you could do an ATF flush to loosen up those apex seals. That would help restore some compression and help the longevity. I see that in your sig you have a rebuild but the ATF flush is always a good thing!

The "ATF flush" is NEVER a good thing. Really I wonder where this myth started. ATF DOES NOT dissolve carbon, and is harmful to the rubber found in the engine.

http://www.aaroncake.net/rx-7/atftrick.htm


Originally Posted by spot_skater
Take out your air pump, block off your ACV.

Only if the cats have already been eliminated...


Take out your spare tire and jack if you're feeling daring.
Don't do that. You'll have a flat and get suck somewhere in the middle of nowhere at 1AM with no-one around for 25 miles. Ask me how I know.


Take out shit you don't need. Full emissions removal would be nice, and would clean up the bay.
Gain: nothing. And really easy to screw up the car if you don't know what you are doing (see many past threads for examples).


Originally Posted by blmcquig
a can of WD40 or some lock cleaner type stuff.
spray and clean all your latches, locks, hinges, pivot points, etc.

WD-40 is NOT a lubricant. It's a very light oil that is good for basically nothing but for use as a cutting oil or to remove water from electrical connections (WD stands for Water Displacer). Spraying it onto hinges or locks will REMOVE the lubricant that is already there and cause them to wear and stick. If you want to properly lubricate these things, you need to use white lithium grease.


Originally Posted by pimpdaddy7835
and I've got aftermarket exhaust
an alright glass pack with the stock mufflers
this hick told me to stick a water hose in the muffler and make the glass in the
glasspack shatter so my car sounds loud....
good... bad.. what??

What do you think? :)


Originally Posted by Rotary Noob
Remove your seats, remove your kick plates, remove your headliner and your trim pieces, remove your speakers, remove your jackstand/tire, remove the package straps, remove the fiberglass tubs, or the seats, whichever you have. Remove your carpet, and replace your seats. Seats are a 14mm, seat belts are 16, dash is 10, headliner and interior can be removed with a screwdriver, some pressure, and common sense.

Now this is just my personal opinion, but driving a car around on the street without an interior sucks. It's loud, rattly, cheap feeling and just makes the car feel like it was just pulled out of a junkyard.


Buy a different battery, so you have 3/8"s terminals, instead of the giant ass 1" ones. Replace the connectors so that you get a nice solid clamp, and its not wiggling around. Wont corrode as easily either, if you get the marine connectors. Make sure you crimp that stuff right though, i believe the stock wiring is a 6 or a 4 AWG.
Exactly what is this supposed to accomplish? Downgrading the electrical system in cars prone to flooding is not exactly a wise move.


You could remove the blower motor, the AC, the AC pump, the heater core (and then just go to home depot and buy some rubber hose of the same type that is already there, and run it all the way round the engine to complete the coolant circut)
Keep in mind that many safety inspections specify that if the vehicle was equipped with a heater from the factory, it MUST be functional for the defrosting capability. Also, what kind of crazy person removes a heater? Crap, I wouldn't even do that in a pure track car.

RX drift 12-07-06 05:01 PM


Originally Posted by Aaron Cake
Exactly what is this supposed to accomplish? Downgrading the electrical system in cars prone to flooding is not exactly a wise move.

Not to argue the fact, I totally agree, but am I the only one with a rotary engine that doesn’t flood?? I have never had it flood once, I can rev it to 2,000 rpm and shut it of(not good I’m sure but sometimes do it cause it sounds cool LOL :squint: ), I can accidentally hit the gas before I turn the key and she fires no prob, so what’s the deal???

lchaidez 12-07-06 05:07 PM

useless post but...

+10! Aaron cake, well said!!

Edit: Also, does that water injection treatment really work aaron???

Houstonderk 12-07-06 07:53 PM

Yes the water injection is awesome. Don't know if its any better but I used MMO before.

Aaron Cake 12-08-06 01:43 PM


Originally Posted by RX drift
Not to argue the fact, I totally agree, but am I the only one with a rotary engine that doesn’t flood?? I have never had it flood once, I can rev it to 2,000 rpm and shut it of(not good I’m sure but sometimes do it cause it sounds cool LOL :squint: ), I can accidentally hit the gas before I turn the key and she fires no prob, so what’s the deal???

They tend to flood if they are in poor tune (dripping injectors, bad plugs, low compression, etc.). I've never had much of a flooding issue either since I always kept my car in good shape. Only one RX-7 I've owned would flood because it had low compression.

The rev to 2K trick is an old one with fuel injected RX-7s and goes a long way to prevent flooding. Bad idea in a carb'ed car since it just pulls more fuel into the engine (and makes a hellacious backfire).

hkp 12-08-06 01:58 PM

one of the greatest thing i have ever done to my car was change the shifter bushings, its so nice.

RX drift 12-08-06 05:16 PM


Originally Posted by Aaron Cake
They tend to flood if they are in poor tune (dripping injectors, bad plugs, low compression, etc.). I've never had much of a flooding issue either since I always kept my car in good shape. Only one RX-7 I've owned would flood because it had low compression.

The rev to 2K trick is an old one with fuel injected RX-7s and goes a long way to prevent flooding. Bad idea in a carb'ed car since it just pulls more fuel into the engine (and makes a hellacious backfire).

Well i have about 12k on a rebuild and she is still puling strong, and with a oil change every three months or less i guess she is in good cond.

SO if i catch that right the 2k rev is actually beneficial on a fuel injected rotary?

Bama420 12-09-06 11:35 PM


Originally Posted by spot_skater
Take out your air pump, block off your ACV. Take off A/C and power steering if you don't use or like them. Take out your spare tire and jack if you're feeling daring. Remove your evaporator if you don't use the A/C and want to be gangster.

Take out shit you don't need. Full emissions removal would be nice, and would clean up the bay. It's not "free" but it is cheap (relatively), relocate the battery to a storage bin.

Use your imagination, yo.

James



When removing the Air Pump, what all else does that entail? Obviously, remove belt and pump itself, but what needs to be capped, plugged, rerouted, so on and so forth? Please respond quickly because I just gutted my cats and need to do or not do this quite soon.

Aaron Cake 12-10-06 10:55 AM


Originally Posted by RX drift
SO if i catch that right the 2k rev is actually beneficial on a fuel injected rotary?

It's beneficial if your car wants to flood as it clears the engine of fuel. Otherwise it's basically pointless.


Originally Posted by Bama420
When removing the Air Pump, what all else does that entail? Obviously, remove belt and pump itself, but what needs to be capped, plugged, rerouted, so on and so forth? Please respond quickly because I just gutted my cats and need to do or not do this quite soon.

You can lose the ACV and associated vacuum lines. You will also need a duel belt alternator pully so you can run another belt on the water pump pully to avoid slippage. Search for "airpump removal" as this has been covered 10,001 times in the past.

lchaidez 12-12-06 12:35 PM

So i was at mazdatrix and it turns out the water injection treatment can be dangerous. while burning carbon out, it turns out chances of a large piece getting caught in between the housing after the spark and on its way out to through the header.

I would rather rev my car at high rpm if thats the case.

every beep every shift~ no?

lchaidez 12-12-06 12:42 PM

i guess i mean this piece i didnt necessarily mean in between the housing... ill grab a pic and show you

http://img.photobucket.com/albums/v2...rs/rotary2.jpg

The Rotor isnt exactly positioned, but I hope you understand my picture.

nitronatefc 12-12-06 02:59 PM

The TB mod is a good cheapie/ freebie too.

Aaron Cake 12-12-06 03:33 PM


Originally Posted by nitronatefc
The TB mod is a good cheapie/ freebie too.

Only on a TII. On an NA, it accomplishes nothing.

nitronatefc 12-12-06 04:03 PM


Originally Posted by Aaron Cake
Only on a TII. On an NA, it accomplishes nothing.

Good point Aaron. There would be no performance gain on a N/A. The biggest gain would be easier and quicker removal of the UIM

My5ABaby 12-12-06 04:12 PM


Originally Posted by lchaidez
So i was at mazdatrix and it turns out the water injection treatment can be dangerous. while burning carbon out, it turns out chances of a large piece getting caught in between the housing after the spark and on its way out to through the header.

I would rather rev my car at high rpm if thats the case.

every beep every shift~ no?

And that's different than high revving how? They both remove carbon that's built up. Solution: Don't let it build up in the first place. :)

nitronatefc 12-12-06 04:22 PM

You could also take your Mom's rolling pin and roll your fenders. This is of course to make way for the new fatty tires you can squeeze underneath with all the money you saved from your free mods :)

Black91n/a 12-12-06 04:41 PM

A better choice would be an old baseball bat, that way your mom's not going to use it to beat you with after your done with it.

lchaidez 12-12-06 04:58 PM


Originally Posted by My5ABaby
And that's different than high revving how? They both remove carbon that's built up. Solution: Don't let it build up in the first place. :)

true, but i just thought i should mention it. I mean I was told this information, and I thought it would be helpful to some extent of other knew the possible things that could occur. Im pretty sure that this would occur either with high rev or water injection.... but yea long story short...

like you said dont let it build up... good point

papiogxl 12-12-06 05:24 PM

This is really old school- "the Italian tuneup" drive at redline for ~2 minutes... and hope your omp pumps enough oil.

I don't really recommend it though. I would rather use water or seafoam.


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