Gen 1, 12A, Problems List
06-07-12, 08:59 AM
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Gen 1, 12A, Problems List
Hey yall, I have an 85, 12A powered rx-7. I have had this car for about a year now, and have yet to get it running. When i took delivery of the car it was in poor shape, the motor and tranny i know work, however the fuel system is total crap. Ive purchased a "rebuilt" Nikki carb on e-bay hoping that it would solve the problem, but its just as bad off as the original carb. and i have no idea how to hook up the rats nest of bullshit, nor do i really want to.So here are my thoughts.
1. I need a new carb/intake set up.
2. new exhaust (mine is completely clogged and caught fire when it fired up the 1st time)
3. brakes? i think i have drums in the back... do i need disc convert for SCCA?
4. larger wheels? how do i modify the car for more normal sized wheels and tires?
5. windshield wipers, (i have arms, but no blades or clips)
this is where i need to start i think, i need to get this car running, and driving, and inspectable... then we will start building it up.
any suggestions or thoughts? sorry i dont have any pictures yet, its in poor shape.
06-07-12, 09:18 AM
#2
Engine, Not Motor
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When you replaced the carb, did you also totally flush out the fuel system, replace the fuel filter, and make sure the tank was in good shape internally?
You don't really need discs for SCCA, but certainly it would be a worthwhile upgrade. May bump you up a class though. To get discs, upgrade to a GSL-SE rear axle. At the same time you also get LSD. You'll need to swap the proportioning valve and master cylinder, as well as the driveshaft to that from a GSL-SE.
As for the wheels, check the 1st gen FAQs for wheel sizing info.
You don't really need discs for SCCA, but certainly it would be a worthwhile upgrade. May bump you up a class though. To get discs, upgrade to a GSL-SE rear axle. At the same time you also get LSD. You'll need to swap the proportioning valve and master cylinder, as well as the driveshaft to that from a GSL-SE.
As for the wheels, check the 1st gen FAQs for wheel sizing info.
06-08-12, 02:40 PM
#3
If you're sure the fuel pump is pumping through a new fuel filter, try starting that baby with choke cleaner. Have several or more cans on hand. Have the fuel system cleaner of your choice in the gas tank in higher than normal concentration. I just started my been sitting 3.5 years 85 in this manner. After three days it's running a little better each day, idling well. Rear drums are fine for less than 200 horsepower.
06-08-12, 08:11 PM
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Appologies if this post is not appropriate, im new! This will be a lengthy post, I hope i can cover all the bases.
I have an 85 rx-7 with vin: JM1FB3318F0881114
Im not sure what the breakdown of the code is, but I know that it has a 12a, and a nikki 4bl
this car ran a few years ago, my father in law used to drive it regularly. It became too small for his needs, and it sat in a field for a few years. I then took ownership and brought it into my garage.
after trying to start the car the for a few days, i took the original carb apart and 1 of the floats was missing, and everything was extremely nasty looking. so i purchased a "rebuilt" nikki carb on ebay. The carb i purchased, i was told had been modified for no emmission bs. I installed this carb onto my car and hooked up the rats nest to the best of my ability (there is more rats nest than carb ports).
car would idle until u shut it off, but would not accelerate. I towed it to a mechanic that used to race an rx-7 back in the day and he tinkered with it for a year in his spare time with no luck, he said "its deffinatly something in the carb" and it would cost me 400 to have him rebuild it. so i brought the car back home.
Today i installed my boat battey into the car, and stuck it on a charger. I put 2 1/2 gallons of gas into the tank, and disconnected the fuel to the carb. Turned the key on and am DEFINETLY getting fuel to the carb. so i hooked the fuel back up.
1st, 2nd, 3rd attempt of starting the car. Choke on. Car just cranks.
- i poured a small amount of gas into the carb
4th attempt, car cranks, and then fires and idles for a few seconds before shutting off.
- i poured a little larger abount into the carb
5th attempt, car fires and runs for a few seconds longer than before, then shuts off.
car sounds great. sounds strong, no abnormal noises.
I have had the FSM since the begining, and have tried to use it to get the results im seeking, however im lost at this point. I want to try and take the Nikki apart, and check to see what might be causing an issue. Any suggestions on what i should be looking for?
Also, i installed a mr gasket 42s fuel pump to replace the non-working stock fuel pump... is this enough fuel pump?
I have an 85 rx-7 with vin: JM1FB3318F0881114
Im not sure what the breakdown of the code is, but I know that it has a 12a, and a nikki 4bl
this car ran a few years ago, my father in law used to drive it regularly. It became too small for his needs, and it sat in a field for a few years. I then took ownership and brought it into my garage.
after trying to start the car the for a few days, i took the original carb apart and 1 of the floats was missing, and everything was extremely nasty looking. so i purchased a "rebuilt" nikki carb on ebay. The carb i purchased, i was told had been modified for no emmission bs. I installed this carb onto my car and hooked up the rats nest to the best of my ability (there is more rats nest than carb ports).
car would idle until u shut it off, but would not accelerate. I towed it to a mechanic that used to race an rx-7 back in the day and he tinkered with it for a year in his spare time with no luck, he said "its deffinatly something in the carb" and it would cost me 400 to have him rebuild it. so i brought the car back home.
Today i installed my boat battey into the car, and stuck it on a charger. I put 2 1/2 gallons of gas into the tank, and disconnected the fuel to the carb. Turned the key on and am DEFINETLY getting fuel to the carb. so i hooked the fuel back up.
1st, 2nd, 3rd attempt of starting the car. Choke on. Car just cranks.
- i poured a small amount of gas into the carb
4th attempt, car cranks, and then fires and idles for a few seconds before shutting off.
- i poured a little larger abount into the carb
5th attempt, car fires and runs for a few seconds longer than before, then shuts off.
car sounds great. sounds strong, no abnormal noises.
I have had the FSM since the begining, and have tried to use it to get the results im seeking, however im lost at this point. I want to try and take the Nikki apart, and check to see what might be causing an issue. Any suggestions on what i should be looking for?
Also, i installed a mr gasket 42s fuel pump to replace the non-working stock fuel pump... is this enough fuel pump?
06-08-12, 11:06 PM
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Banned. I got OWNED!!!
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https://www.rx7club.com/new-member-rx-7-technical-256/nikki-troubleshooting-1001105/
please refer to the above topic for further posts.
please refer to the above topic for further posts.
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