MarcoPyro

Well the other day I was doing a donut/ burn out in my rx7. While driving away I noticed my rear end acted like a locker. it wouldnt turn w/o chirping and binding. I decided to drive it to work today to see if it would free itself up, instead I believe I either stripped the ring or pinion gear. It barely made it up my drive way, it just slipped and would catch all of a sudden as if i broke half the teeth off. My question is do you think I should go for a junkyard rear end or rebuild the one I have. Personally Id like more bottem end so if I decide to rebuild the one I have does anyone have a recomendation on a ratio or a brand as well as a place to buy one. Any answer is greatly appriciated, my car is stuck till its fixed.

Rob x-7

get a used rear end and stop doing donuts



you will pay a fortune for the parts to rebuild yours, and another $400+ for a ring and pinion, and in the

end you will still have a N/A rear.

fc3sboy1

i have 2 spare rear subframes compleat with diffs and axels just for customers who abuse there na cars. seen a few come my way that where broken. just replace the diff with a used one as your lookin at a **** load of money if you want to rebuild with either factory parts or aftermarket man. pm me if you are interested in one of my spares i have.

13before20

Replace the diff. i also have a spare off a 86 and a 87 let me know if youre interested . they both work fine.

MarcoPyro

Ok fellas, thanks for the help. I just purchased a 4.88 rear end that supposedly only had 5000 origional miles on it.. i have no idea what to expect out of it but im hoping 1st gear is useless, hahaha the guy i got it from in throwing in a FC1000 ignition too...

donhayes

You'll love the immediate pick up in acceleration. But highway driving will suffer a little bit. Good find.

MarcoPyro

Yea I should have a noticable difference, here are the changes im doing in the next week: (going from a bone stock RX7)

Im going from a 4.10 rear end to a 4.88

The guy gave me a FC1000 ignition system

Racing beat headder stright piped back to a borla catback system

and removing about 650 lbs of subwoofer and batteries, hahahahaha



I used it for car audio competitions, haha i dont know anyone else with a wall and two 18"s in an rx7 =]



ohh and i just removed the stock air box and slapped a cone filter on there..

MarcoPyro

Haha when i say murdered i mean murdered.... heres a pic of after i started cleaning the cases, then i realized it was picture worthy... lol

ColinRX7

Holy smokes how much juice are you feeding those subs?



Three words.



Delta wound alternator.



Before you get stranded on that puny 60 amp wye wound FC alternator.

krazy13

Wow...



Wow...



Wow... I am no rocket scientist but that is done... that is the GREAT importance of good maintenance is. Can I recommend red line or something... (all synthetic back there?)