NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   new guy thinking of a buying an rx7 (https://www.nopistons.com/meet-greet-79/new-guy-thinking-buying-rx7-74917/)

mitsuspyder03 11-23-2010 06:33 PM

Hi there im richard im from new orleans, La. My friend has a 85 rx7 with a 13b and i drove it one time and fell in love it has now been sitting up for 3 years need a hood and driver fender he said hell let i got for a grand so im realy considering it. It needs some minor engine work and what not. I know nothing about rotarys but heard the 13 be is a very great motor and im willing to learn.

phinsup 11-23-2010 10:00 PM

My GSL-SE was and still is my favorite car that I owned, if it's in good shape and is a good buy i'd say do it!

thatpoorguy 11-23-2010 11:17 PM

As long as she's running well definitely! Best of luck and welcome to nopistons

mitsuspyder03 11-24-2010 03:01 AM

it runs he says it needs new injectors when try to starts it one sprays gas from where the top of the injector and the rail meet, not a hard fix interior is in great shape just some fading and needs a paint job but the fent and hood got hit by a for from a tractor. It has 120,000 miles on it i was told rotarys need to be rebuilt after 100,000 cause the lose compression is this true?

Baldy 11-24-2010 07:15 AM

There's no magic number for when they need to be rebuilt, but generally the non-turbo motors (like your friend's 13b) last much longer than turbo, and almost always well over 100,000 miles.



If it's spraying fuel from where the injector meets the rail, it most likely just needs an injector o-ring.

phinsup 11-24-2010 09:48 AM

My 83 12a had 220,000 miles on the original motor when it got ran over.

mitsuspyder03 11-24-2010 09:14 PM

ok thanks baldy ill definately try that thanks. Im a performance freak so im considering possibly modding the engine a little so would a rebuild be necesary? Sorry for all the questions im just curious.

thatpoorguy 11-25-2010 02:25 PM

That's what we're here for lol if it's high mileage it's a good idea to at least go through the engine before doing major upgrades. There are mixed opinions about swapping to 3mm apex seals so it's more of an owner preference for that. Porting is great for performance but there are a few ways of doing it with various outcomes.

mitsuspyder03 11-26-2010 07:35 PM

ok thank. no on my other forum fo rmy eclipse all they do is yell search button lol its alot easier to ask lol

brandynmarie 11-30-2010 10:08 AM

Best of luck! Loved ours but have to sell....

mitsuspyder03 12-05-2010 04:19 PM

well i just finished most of th upholstry on my eclipse so now i can work on the rx7 i have and update it is and 86 not and 85 and the motor has 70,000 miles on it so im buying the injector gaskets tomm and changing them out starting tomm.




Baldy 12-06-2010 08:31 AM

Good luck! Feel free to post any questions in the 2nd generation forum.

mitsuspyder03 12-06-2010 07:19 PM

what does fc and fd mean

thatpoorguy 12-06-2010 09:17 PM

It's a part of the vin code. The 86 rx-7 you have is a second gen called the fc because the first five of the vin is jm1fc. First gen is jm1fb and third gen is jm1fd. Occasionally you'll hear sa22 which is the 79-80 rx-7. Fb was from 81-85, fc from 86-92 oem 86-91 jdm, and fd was 93-95 oem, 92-02 jdm.



Fun fact- rx8 vin starts with jm1fe

mitsuspyder03 12-06-2010 09:52 PM

lol thanks, im strarting from scratch with this platform. One day this week im going to go work on the car and change the injector o rings and see if i can get it started. i think it mat be flooded so ill be on here if i have any problems. thanks so far yall have been alotta help

mattmego 12-19-2010 05:15 PM

sounds like a sweet deal and easy fix go for it


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