building a stock 12a and needs help

[all_rotor_or_no_motor]

the stock 12a works but idk for how much longer. id like 2 kno how fast the top speed is cuz the max i can get so far is 80 any suggestions or help in any way will be apresheated

[IH8DSM]

So wait your saying you think your 12a is bad and wanna know if a normal running 12a can go faster then 80? Thats what I get from your post, i would say do a compression check research it because its different then a piston motor(need to read the compression for all 3 sides of the rotor). As for the 12a going faster then 80 it should be able to how much faster im not sure.

[PercentSevenC]

A stock 12A that's in good shape should get you well into triple digits.

[Rogue_Wulff]

Originally Posted by PercentSevenC

A stock 12A that's in good shape should get you well into triple digits.

Quoted for truth.....
Regardless of whether it has a 4/5speed or auto, it should easily reach into the triple digit range of the speedo.

[all_rotor_or_no_motor]

thats what i thought but i wasnt sure nd this is my fist of hopfully many rx7s but it is a bone stock 82 gsl with the 5speed the car is older then me but im in total love with it. the thing is i dont realy kno what ways i can go 2 mod it. i plan on rebuilding the motor. but im a young guy im only 22 nd im so used 2 piston cars but like most of u guys i love the sound the rotary makes. so if any of u guys can help or give me ideas i am open it all suggestions

[one320fc]

Best advice I can give with what experience I have. Give it a good tune-up, change all the fluids and run a can of sea foam in the gas tank. After all that find a local rotary mechanic or purchase a rotary compression tester from a vendor on this forum and check your compression. Also look to see if the car still has its converts on it, @ operating temp if they are glowing red you need to gut them or replace them, could be part of your performance problem.

[all_rotor_or_no_motor]

i plan on puting a full race pipe system on it. but i live in minnesota nd i realy dont kno of any rotary shops here becuz the rx7 isnt a comon car around here. my rx7 is the only 1 in the surounding 4 countys so im in between a rock and a hard place.

[Kentetsu]

Just start with the basic tuneup items, and chances are you will solve your issues.

Distributor cap and rotor
Spark plugs (use NGK, not Nippon Denso)
Fuel filter (very important)
Air filter
Spark plug wires if they look older

Also, verify that you have spark on all four spark plugs. Ignition issues are a major cause of low power, but easily corrected.

Run a can of Seafoam through the gas tank.

When you are ready to look at performance mods, here is the route I took (check out my videos in my signature link to get an idea of what these will produce):

1. Racing Beat exhaust system (about the only RB product I will recommend, and only because there really isn't any other bolt on option).
2. Sterling carb: www.sterlingmetalworks.com
3. Suspension upgrades from www.re-speed.com

Best of luck with your new project!


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[all_rotor_or_no_motor]

ok ill do that. now it seems 2 not like 2 start when its cold nd like it likes 2 flood out is that in the jets or where woul be a good idea 2 look cuz after its warmd up it starts just fine every time

[12arotary]

just curious if you realize your speed-o only goes to 80 just cause the needle stops doesn't mean that's your speed

just kidding, all the above advice is good.

[rx4ur7]

Check to make sure the linkage for control of the secondaries is hooked up.

Right side of carb when looking at it from right side of car. Where you see the linkage near top of carb, return spring and there is a strange looking setup aft of that. There should be a coil spring around a shaft that has a 'T' nut on it (or it should). That has to be held in place near the top of the carb. The retainer is a fork type setup with a spring attached to it. Sorry do not have a shot of it, but if you check your FSM you will see it.

If that actuator is not hooked up you will not have any secondaries and you will be hard pressed to get over 80mph no matter what you do. It will also seem rather gutless like why does it take forever to get to 80? and why is the kid on his bicycle beating me to the next light?

If you want to check compression and you do not have access to a rotary tester you can get a quick and dirty idea using your finger and a friend. You can get a good idea by putting you finger over the trailing plug hole and see if there are even pulses. If it blows your finger off and they are even the motor is more than likely not the issue. If they are not even pulses and it does not try to blow your finger off you could be looking at internal problems. Those of us that have done enough of these can tell just by the sound when the trailing plugs are out what condition the motor is in.

You can also use a regular compression tester. You need to remove the schrader valve (check valve) you can then watch the gauge and see if you are getting even pulse pressures.

For the cold start issue, check plugs, wires and choke system. If cranking slow, battery and grounds.

[aaron_bc]

Originally Posted by all_rotor_or_no_motor

thats what i thought but i wasnt sure nd this is my fist of hopfully many rx7s but it is a bone stock 82 gsl with the 5speed the car is older then me but im in total love with it. the thing is i dont realy kno what ways i can go 2 mod it. i plan on rebuilding the motor. but im a young guy im only 22 nd im so used 2 piston cars but like most of u guys i love the sound the rotary makes. so if any of u guys can help or give me ideas i am open it all suggestions

You`re a year older than me and speak like you`re 12. Grammar please.

[all_rotor_or_no_motor]

it starts cutting out before i hit 80 nd fer the dude above this.why u gotta be a dick i kno i cant spell good so stfu

[Rogue_Wulff]

Check ignition and fuel system.

[all_rotor_or_no_motor]

well guys i have it running nd yea it has a lot more balls now it turnd out the cats on it were pluged up